A Seismic design is aimed at controlling the structural damage based on precise estimations of proper response
parameters. Seismic design explicitly evaluates how a building is likely to perform; given the potential hazard it
is likely to experience, considering uncertainties inherent in the quantification of potential hazard and
uncertainties in assessment of the actual building response. It is an interactive process that begins with the
selection of performance objectives, followed by the development of a preliminary design, an assessment as to
whether or not the design meets the performance objectives, and finally redesign and reassessment, if required,
until the desired performance level is achieved.
In this present study one R.C. buildings, of G + 2 storey institutional building (designed according to IS
456:2000) are analysed. Analysis and redesigning by changing the main reinforcement of various frame
elements and again analyzing. The structural analysis has been carried out using STAAD.Pro V8i, a product of
Structural Analysis and Design Program. A total of 1 cases for a particular G + 2 storey institutional building
located in Zone-II have been analyzed. The results of analysis are compared in terms of reinforcement in the
column and beam. The best possible combination of reinforcement that is economical, effective and whose
damage is limited to Grade 2 (slight structural damage, moderate non structural damage) in order to enable
Immediate Occupancy is determined and is termed as Seismic Design.
This document summarizes research on the seismic performance of flat slab buildings with vertical geometric irregularities in different earthquake zones. It reviews 10 previous studies on analyzing the behavior of flat slab and irregular buildings under seismic loads using software like STAAD Pro, SAP2000, and ETABS. The document aims to identify gaps in existing research and areas for further study on improving the seismic resistance of irregular high-rise buildings.
IRJET- Comparative Study & Seismic Anyalysis of Regular and Irregular Geometr...IRJET Journal
This study compares the seismic analysis of regular and irregular high-rise buildings in different seismic zones of India. Finite element software will be used to model and analyze a 10-story regular and irregular building subjected to different seismic zones. Results like deflections, axial forces, and moments will be compared to understand how seismic zone and building geometry affect structural response. The aim is to help improve earthquake-resistant design of high-rise buildings.
Influence of Aspect Ratio & Plan Configurations on Seismic Performance of Mul...IRJET Journal
This document summarizes a study that analyzed the influence of aspect ratio and plan configurations on the seismic performance of multistory reinforced concrete buildings. Sixteen building models with varying horizontal aspect ratios (number of bays) and vertical aspect ratios (number of stories) were modeled and analyzed using response spectrum analysis to evaluate various seismic response parameters. The objective was to determine the best suitable building plan configuration and understand how increasing the height and bays impacts seismic response.
Seismic Analysis of High Rise Building with is Code 1893-2002 and is Code 189...IRJET Journal
This document discusses seismic analysis of high-rise buildings using IS 1893-2002 and IS 1893-2016 codes. It analyzes a 50-story building model under both codes and compares results. Analysis includes response spectrum analysis, modeling the building in ETABS, and determining displacements, shear forces, and bending moments. The new code produced lower displacements of 0.16m compared to 1.08m in the old code. Shear forces decreased from 334kN to 188kN, indicating improvements in the revised code for seismic loading. The document concludes the new Indian code provides better estimates of seismic demand for structural design.
IRJET- Study of Literature on Seismic Response of RC Irregular StructureIRJET Journal
The document discusses vertical irregularities in reinforced concrete (RC) buildings and their effects on seismic response. It first defines vertical irregularities as weaknesses caused by discontinuities in mass, stiffness, or geometry between storeys. Soft stories, where the stiffness suddenly decreases, are one type of vertical irregularity. The document then reviews several previous studies on modeling and analyzing vertically irregular buildings using pushover analysis, which incrementally loads a structure to determine its failure mechanisms. The studies found that soft story buildings absorb energy through overturning and shear deformation. Irregular buildings may have similar seismic performance to regular buildings if properly designed. Quantifying the degree of irregularity can help evaluate seismic vulnerability and retrofitting needs.
Comparative study on multistoried building using linear and non linear analysisIJARIIT
The effect of infill walls on the building is generally neglected in the analysis. In fact, an infill wall contributes to the
lateral strength and stiffness of the structure. Seismic response analysis of multi storey building frame with infill was done by
modeling the infill wall as an equivalent diagonal strut. For the equivalent diagonal strut, the thickness is taken equal to the
thickness of the wall and width of the strut as per “Equivalent strut method”. The comparison of seismic responses is done for
the multi-storied buildings with infill as equivalent diagonal strut using linear and non-linear analysis. ETABS software is used
for the present study.
Performance of Flat Slab Structure Using Pushover AnalysisIOSR Journals
Performance Based Seismic Engineering is the modern approach to earthquake resistant design. It
is a limit-state based design approach extended to cover complex range of issues faced by structural engineers.
Flat slabs are becoming popular and gaining importance as they are economical as compared to beam-column
connections in conventional slab. Many existing flat slabs may not have been designed for seismic forces so it is
important to study their response under seismic conditions and to evaluate seismic retrofit schemes. In this
paper we have discussed the results obtained by performing push over analysis on flat slabs by using most
common software SAP2000. A (G+7) frame having 5 bays is considered for analysis. It is observed that the
performance point of flat slab is more as compared to conventional building.
Seismic Performance of RC Frame Building with Different Position of Shear Wallijtsrd
An earthquake force is a very strange force and behaves quite differently than Gravity and Wind loads, striking the weakest spot in the whole three dimensional structure. It’s not earthquake that kills, in fact ignorance in design and poor quality construction results in many weaknesses in the structure that cause serious damage to life and property. Masonry Infill are frequently used to fill the gap between the vertical and horizontal resisting elements of the building frames with the assumption that these in fills will not take part in resisting any kind of load either axial or lateral. Hence, its significance in the analysis is generally neglected by the designer. In fact, infill wall and shear wall considerably enhance the rigidity and strength of the frame structure. Various researches suggest that the bare frame has comparatively lesser stiffness and strength than the infill frame and frame with shear wall, therefore their ignorance cause failure of many multistorey buildings when subjected to seismic loads. In the present study, the finite element analysis of RC frame models viz. a bare frame a frame with shear wall considering infill a bare frame with shear wall has been carried out and the number of storeys vary as G 3, G 5, G 7 and G 9. Linear analysis of all RC frame structures has been performed as per IS 1893 Part 1 2002 and IS 456 2000. In this study only in plane stiffness of masonry wall has been considered and infill panels modelled as equivalent diagonal strut elements. The behaviour of buildings subjected to Gravity and Seismic loads with the help of Response Spectrum Analysis using FEM based software and the effect on Time Period, Mass Participation factor, and Storey Drift has been observed. Strength and Rigidity of RC bare frame structures is found increasing after the inclusion of infill panels and shear wall. Bharath V B | Kuldeep Singh Solanki | Aashutosh Raj Yadav "Seismic Performance of RC Frame Building with Different Position of Shear Wall" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-5 , August 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31728.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/31728/seismic-performance-of-rc-frame-building-with-different-position-of-shear-wall/bharath-v-b
This document summarizes research on the seismic performance of flat slab buildings with vertical geometric irregularities in different earthquake zones. It reviews 10 previous studies on analyzing the behavior of flat slab and irregular buildings under seismic loads using software like STAAD Pro, SAP2000, and ETABS. The document aims to identify gaps in existing research and areas for further study on improving the seismic resistance of irregular high-rise buildings.
IRJET- Comparative Study & Seismic Anyalysis of Regular and Irregular Geometr...IRJET Journal
This study compares the seismic analysis of regular and irregular high-rise buildings in different seismic zones of India. Finite element software will be used to model and analyze a 10-story regular and irregular building subjected to different seismic zones. Results like deflections, axial forces, and moments will be compared to understand how seismic zone and building geometry affect structural response. The aim is to help improve earthquake-resistant design of high-rise buildings.
Influence of Aspect Ratio & Plan Configurations on Seismic Performance of Mul...IRJET Journal
This document summarizes a study that analyzed the influence of aspect ratio and plan configurations on the seismic performance of multistory reinforced concrete buildings. Sixteen building models with varying horizontal aspect ratios (number of bays) and vertical aspect ratios (number of stories) were modeled and analyzed using response spectrum analysis to evaluate various seismic response parameters. The objective was to determine the best suitable building plan configuration and understand how increasing the height and bays impacts seismic response.
Seismic Analysis of High Rise Building with is Code 1893-2002 and is Code 189...IRJET Journal
This document discusses seismic analysis of high-rise buildings using IS 1893-2002 and IS 1893-2016 codes. It analyzes a 50-story building model under both codes and compares results. Analysis includes response spectrum analysis, modeling the building in ETABS, and determining displacements, shear forces, and bending moments. The new code produced lower displacements of 0.16m compared to 1.08m in the old code. Shear forces decreased from 334kN to 188kN, indicating improvements in the revised code for seismic loading. The document concludes the new Indian code provides better estimates of seismic demand for structural design.
IRJET- Study of Literature on Seismic Response of RC Irregular StructureIRJET Journal
The document discusses vertical irregularities in reinforced concrete (RC) buildings and their effects on seismic response. It first defines vertical irregularities as weaknesses caused by discontinuities in mass, stiffness, or geometry between storeys. Soft stories, where the stiffness suddenly decreases, are one type of vertical irregularity. The document then reviews several previous studies on modeling and analyzing vertically irregular buildings using pushover analysis, which incrementally loads a structure to determine its failure mechanisms. The studies found that soft story buildings absorb energy through overturning and shear deformation. Irregular buildings may have similar seismic performance to regular buildings if properly designed. Quantifying the degree of irregularity can help evaluate seismic vulnerability and retrofitting needs.
Comparative study on multistoried building using linear and non linear analysisIJARIIT
The effect of infill walls on the building is generally neglected in the analysis. In fact, an infill wall contributes to the
lateral strength and stiffness of the structure. Seismic response analysis of multi storey building frame with infill was done by
modeling the infill wall as an equivalent diagonal strut. For the equivalent diagonal strut, the thickness is taken equal to the
thickness of the wall and width of the strut as per “Equivalent strut method”. The comparison of seismic responses is done for
the multi-storied buildings with infill as equivalent diagonal strut using linear and non-linear analysis. ETABS software is used
for the present study.
Performance of Flat Slab Structure Using Pushover AnalysisIOSR Journals
Performance Based Seismic Engineering is the modern approach to earthquake resistant design. It
is a limit-state based design approach extended to cover complex range of issues faced by structural engineers.
Flat slabs are becoming popular and gaining importance as they are economical as compared to beam-column
connections in conventional slab. Many existing flat slabs may not have been designed for seismic forces so it is
important to study their response under seismic conditions and to evaluate seismic retrofit schemes. In this
paper we have discussed the results obtained by performing push over analysis on flat slabs by using most
common software SAP2000. A (G+7) frame having 5 bays is considered for analysis. It is observed that the
performance point of flat slab is more as compared to conventional building.
Seismic Performance of RC Frame Building with Different Position of Shear Wallijtsrd
An earthquake force is a very strange force and behaves quite differently than Gravity and Wind loads, striking the weakest spot in the whole three dimensional structure. It’s not earthquake that kills, in fact ignorance in design and poor quality construction results in many weaknesses in the structure that cause serious damage to life and property. Masonry Infill are frequently used to fill the gap between the vertical and horizontal resisting elements of the building frames with the assumption that these in fills will not take part in resisting any kind of load either axial or lateral. Hence, its significance in the analysis is generally neglected by the designer. In fact, infill wall and shear wall considerably enhance the rigidity and strength of the frame structure. Various researches suggest that the bare frame has comparatively lesser stiffness and strength than the infill frame and frame with shear wall, therefore their ignorance cause failure of many multistorey buildings when subjected to seismic loads. In the present study, the finite element analysis of RC frame models viz. a bare frame a frame with shear wall considering infill a bare frame with shear wall has been carried out and the number of storeys vary as G 3, G 5, G 7 and G 9. Linear analysis of all RC frame structures has been performed as per IS 1893 Part 1 2002 and IS 456 2000. In this study only in plane stiffness of masonry wall has been considered and infill panels modelled as equivalent diagonal strut elements. The behaviour of buildings subjected to Gravity and Seismic loads with the help of Response Spectrum Analysis using FEM based software and the effect on Time Period, Mass Participation factor, and Storey Drift has been observed. Strength and Rigidity of RC bare frame structures is found increasing after the inclusion of infill panels and shear wall. Bharath V B | Kuldeep Singh Solanki | Aashutosh Raj Yadav "Seismic Performance of RC Frame Building with Different Position of Shear Wall" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-4 | Issue-5 , August 2020, URL: https://www.ijtsrd.com/papers/ijtsrd31728.pdf Paper Url :https://www.ijtsrd.com/engineering/civil-engineering/31728/seismic-performance-of-rc-frame-building-with-different-position-of-shear-wall/bharath-v-b
IRJET- A Review on Progressive Collapse of Composites StructuresIRJET Journal
This document reviews previous research on analyzing the progressive collapse of composite structures. Some key studies analyzed steel and concrete buildings using linear and nonlinear static/dynamic analyses and investigated how their behavior changed with the sudden removal of columns. Percentage increases in demand capacity ratios, base shear, and roof displacements were calculated. The current study aims to analyze the progressive collapse of a G+20 composite building using ETABS software and investigate how its behavior changes under extreme loading conditions based on guidelines from the US General Services Administration.
IRJET- Effect of Infill Wall Stiffness Variations on the Behaviour of RC ...IRJET Journal
This document summarizes a study on the effect of infill wall stiffness variations on the behavior of reinforced concrete buildings under seismic demands. The study models a 5-story reinforced concrete building located in seismic zone III of Nasik City, India, with and without considering the stiffness of infill walls. Static analysis using the equivalent lateral force method and dynamic analysis using the response spectrum method are performed and results such as base shear, fundamental time period, and story shear are compared. The goal is to better understand how accounting for the stiffness of infill walls affects the performance of reinforced concrete buildings during earthquakes.
Finite Element Modeling of a Multi-Storeyed Retrofitted Reinforced Concrete F...IOSR Journals
In the present study, the non-linear response of RC frame using FE modeling under the incremental
loading has been carried out in the first phase of analysis to study the response and load-carrying capacity of a
four storeyed RC frame using non-linear finite element analysis. In the second phase of study an analysis model
for retrofitted RC frame using finite element method using software ATENA is presented. The results obtained
from FE analysis in both cases are compared with the experimental data for four storeyed RC frame tested by
BARC at CPRI. The results from finite element analysis were calculated at the same location as used in
experimental test. The accuracy of the finite element model is assessed by the comparison with experimental
results which are to be in good agreement. The base shear/ displacement curves from finite element analysis
agree well with the experimental results in linear range. The maximum difference in base shear is observed to
be 7.9%
Performance Levels of RC Structures by Non-Linear Pushover AnalysisIJERA Editor
In the recent earthquakes in which many concrete structures have been severely damaged or collapsed, have indicated the need for evaluating the seismic adequacy of existing buildings. About 60% of the land area of our country is susceptible to damaging levels of seismic hazard. We can’t avoid future earthquakes, but preparedness and safe building construction practices can certainly reduce the extent of damage and loss. In order to strengthen and resist the buildings for future earthquakes, the behavior of a building during earthquakes depends critically on its overall shape, size and geometry. The nonlinear pushover analysis is becoming a popular tool for seismic performance evaluation of existing and new structures. The weak zones in the structure can be examined by conducting this push over analysis and then it will be decided whether the particular part is to be retrofitted or rehabilitated according to the requirement. This method determines the base shear capacity of the building and performance levels of each part of building under varying intensity of seismic force. The results of effects of different plan on seismic response of buildings have been presented in terms of displacement, base shear and plastic hinge pattern
Influence of Concrete and Steel Outrigger and Belt Truss in High Rise Moment ...IRJET Journal
1. The document analyzes 7 models of a 44-story reinforced concrete frame building with different outrigger and belt truss configurations to evaluate their effectiveness in reducing lateral displacement, storey drifts, base shear, and fundamental time periods under wind and earthquake loads.
2. Analysis found that a model with X-braced outriggers was most effective at reducing top storey displacement by 29.21% and maximum story drift by 26.64% compared to the bare frame model without outriggers. A model with a belt truss was also effective, reducing displacement by 34.57% and drift by 30.75%.
3. Steel outriggers provided the least benefit, reducing displacement by only
Variation of deflection of steel high rise structure due to p- delta effect c...Yousuf Dinar
This document summarizes the results of a study that analyzed the effect of P-Delta on the deflection of steel high-rise structures considering global slenderness ratio. 40 different structural models were simulated with varying numbers of stories (7, 14, 20, 30) and bay dimensions to modify the slenderness. Both P-Delta analysis and linear static analysis were performed, and deflections were compared. P-Delta analysis resulted in significantly higher deflections than linear static analysis, especially as slenderness increased with taller buildings and smaller bays. Deflections at the top of each structure and for individual stories were evaluated. Results showed increasing deflections with P-Delta analysis as slenderness rose due to building height or
Seismic Performance and Shear Wall Location Assessment of a RC Building- Eva...IRJET Journal
1. The document evaluates the seismic performance of reinforced concrete buildings located on plain and sloping ground.
2. Non-linear static pushover analysis is conducted using SAP 2000 on a G+10 building model located on plain and sloping ground.
3. Results of the pushover analysis such as base shear, story displacement, story drift and story shear are compared between the plain and sloping ground models.
IRJET- Effect of Response Reduction Factor on R.C Building with Different...IRJET Journal
This document summarizes a study that analyzed the effect of different infill materials on the response reduction factor (R) of reinforced concrete buildings. The study used pushover analysis in ETABS to model a 4-story building with either clay brick or lightweight aggregate concrete block infill walls. Response reduction factor was calculated based on overstrength, ductility and redundancy factors from the capacity curves. The results showed that R decreased from 4.55 to 5.17 when using clay brick versus lightweight blocks. Story shear and displacement were also higher with clay brick. Therefore, the study concluded that using lightweight infill material increases the response reduction factor and reduces seismic demands on the building.
Chronological construction sequence effects on reinforced concrete and steel ...Yousuf Dinar
Building structures are analyzed in a single step using linear static analysis on the assumption that the structures are subjected to full load once the whole structure is constructed completely. In reality the dead load due to the each structural components and finishing items are imposed in separate stages as the structures are constructed story by story for nonlinear behavior of materials. Advancement of finite element modeling accelerates the accuracy of finite element simulation by taking the consideration of construction sequential effects. In this paper, rigid frame structures of both concrete and steel model of different configurations have been taken for sequential analysis. The analysis outcomes will help to understand how the structural response against loads varies for construction sequential analysis and linear static analysis while highlighting the material property. For vivid understanding of necessity of sequential analysis, analysis outcomes are eventually compared with conventional one step analysis. The effect of sequence of construction due to the self-weight of members has been studied and its effect on the overall design forces has also been highlighted using finite element modeling.
IRJET- A Review Paper on Seismic Analysis of Old Masonry Buildings using Equi...IRJET Journal
This document provides a literature review on seismic analysis of old masonry buildings using the equivalent static method. It summarizes 15 previous research papers on topics like visual assessment methods for masonry structures, analytical studies of masonry structures under seismic conditions, low-cost earthquake resistant construction methods, seismic performance analysis of heritage masonry buildings, experimental determination of mechanical properties of masonry walls, and homogenization techniques for masonry building analysis. The document aims to provide background research for analyzing the seismic performance of an old masonry palace in Bhopal, India called Chaman Mahal using the equivalent static method outlined in the Indian code IS 1893:2002.
Performance Based Evaluation of Shear Walled RCC Building by Pushover AnalysisIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Influence of Openings and Local Soil Conditions on the Seismic Behavior of Tu...IRJET Journal
The document analyzes the seismic behavior of tunnel form buildings using response spectrum analysis. Tunnel form buildings are reinforced concrete structures with relatively thin shear walls and flat slabs instead of beams and columns. The study models a 6-story RC wall building to analyze the effects of openings (0%, 6%, 22%, 50%) and soil conditions (bearing capacities of 50, 100, 200, 250) on seismic performance parameters like time period, displacement, drift, and base shear. Response spectrum analysis is performed using ETABS software according to Indian codes. Results show that RC wall buildings have significantly reduced time periods and displacements compared to equivalent RC frame buildings, indicating improved seismic performance.
IRJET- Experimental Study of Floating Column for Seismic Analysis of Multisto...IRJET Journal
This document summarizes an experimental study on the seismic analysis of a multi-story building with and without floating columns. Four building models were created - one without floating columns, and the others with a floating column at the 1st, 2nd, and 3rd floors. The models were analyzed using software to compare the base shear and story displacements under seismic loads. The results showed that buildings with floating columns experienced greater displacements and base shear compared to the building without floating columns, with the highest values for the model with a floating column at the 3rd floor. The study aims to evaluate the effect of floating columns on building behavior during earthquakes.
IRJET- Study on Rigid and Semi Rigid Diaphragm in Multistoried Structure usin...IRJET Journal
This document presents a study on the seismic analysis of multistory reinforced concrete structures considering rigid and semi-rigid floor diaphragms. The study was carried out using ETABS software to analyze structures with rigid diaphragms, semi-rigid diaphragms, and no diaphragms. Results were collected in terms of base shear, maximum story displacement, and maximum story drift for different soil types and seismic zones. The results showed that structures with rigid diaphragms performed better with less displacement compared to structures with semi-rigid or no diaphragms. Rigid diaphragms increased the base shear but reduced displacement by up to 45% and provided better stiffness. In conclusion, rigid
P delta effect in reinforced concrete structures of rigid jointYousuf Dinar
ABSTRACT: Popularity of High-Rise structures of rigid joint frame system are increasing day by day to accommodate growing people in metropolitan city and to construct the structures without any special structural component. However combination of rigid frame with RC structure get 30 storey as maximum storey and prone to collapse under severe displacement, axial force and moment, if the P-Delta effects does not included in analysis and design phase. Due to complexity and low knowledge of P-Delta analyses designers, engineers and architectures are prone to perform Linear Static analysis which may eventually become a cause of catastrophic collapse of the high-rise. 12 cases and 2 different analysis are performed to give a light on the P-Delta effect in RC Structures of Rigid Joint which will aware and suggest concerning person to understand, make experience and perform P-Delta analysis of the high-rise for safety using numerical modelling which may accelerate the process and reduce the complexities.
IRJET- Review Paper on Convincement based Seismic Design of Open Ground Store...IRJET Journal
This document summarizes research on the seismic design of open ground storey framed buildings. It discusses how open ground storey buildings are vulnerable in earthquakes due to soft-storey behavior. The document reviews various studies on seismic analysis of irregular buildings using software like ETABS. It is proposed to conduct time history analysis of multi-storey reinforced concrete buildings considering mass irregularity at different floor levels to understand seismic response. The conclusion discusses how seismic analysis is important for structures and how responses can be reduced by adding shear walls or base isolation.
Seismic Performance Assessment of RCS Building By Pushover AnalysisIOSR Journals
This document discusses a study that assesses the seismic performance of reinforced concrete steel (RCS) frame buildings compared to ordinary reinforced concrete (RC) buildings through pushover analysis. Two 3-story buildings, one RCS and one RC, were modeled and analyzed. The pushover curves showed that while the base shear capacity was similar, the RCS building behaved linearly until maximum shear capacity and then failed in a soft story mechanism. The RC building formed plastic hinges first in beams and then progressively in columns from lower to upper stories until failure. The study found that RCS buildings may perform better seismically by maintaining strength and stiffness up to maximum load capacity.
IRJET- A Study on Effect of LRB Isolators on Varying Height of Rectangula...IRJET Journal
This document analyzes the effect of using lead rubber bearing (LRB) isolators on structures of varying heights when subjected to seismic activity. Non-linear time history analyses were conducted on 4, 10, 15, and 20-story rectangular reinforced concrete structures both with and without LRB isolators. The results showed that using LRB isolators significantly reduced story rotation, acceleration, displacement, and drift across all building heights compared to fixed-base structures. Additionally, LRB isolators increased the natural period of the structures, which decreased the lateral forces experienced. In conclusion, seismic isolation through the use of LRB isolators improved the performance of structures and was more effective at mitigating earthquake effects in taller buildings.
Seismic performance study on rc wall buildings from pushover analysiseSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- Seismic Analysis and Comparative Study of Regular and Irregular Bu...IRJET Journal
This document discusses seismic analysis of regular and irregular buildings using ETABS software. A 15-story reinforced concrete building model was generated for both regular and irregular configurations. Mass and stiffness distribution influence how multi-story buildings respond during earthquakes. Irregularities can cause damage as seen in the 2001 Bhuj earthquake in India. The objective is to conduct dynamic analysis of regular and irregular frames and compare results. Analysis considers factors like storey deflection, storey shear, and stiffness. Previous studies found plan configuration and symmetry affect seismic response, with irregular structures experiencing greater damage.
This document analyzes the seismic performance of a G+2 institutional building in Bhopal, India. The building is modeled and analyzed using STAAD.Pro software under different earthquake load combinations. Results are presented for maximum bending moment, shear force, axial force, joint displacement, and section displacement at each floor. The first floor experiences the highest bending moment of 164.07 kNm and maximum joint displacement of 8.484 mm in the X direction under seismic loads. The analysis provides optimal reinforcement for the building to limit damage to Grade 2 under seismic activity.
The document summarizes the planning, analysis, and design of a multispecialty hospital building. It includes the objectives to prepare architectural drawings, analyze the G+2 building using STAAD Pro, and design the building according to IS 456:2000 using the working stress method. It describes analyzing the building's ability to resist lateral loads. Maximum bending moments in beams and columns will depend on their relative rigidity. Structural elements like slabs, beams, columns, footings, and staircases will be designed according to code specifications using the working stress method.
IRJET- A Review on Progressive Collapse of Composites StructuresIRJET Journal
This document reviews previous research on analyzing the progressive collapse of composite structures. Some key studies analyzed steel and concrete buildings using linear and nonlinear static/dynamic analyses and investigated how their behavior changed with the sudden removal of columns. Percentage increases in demand capacity ratios, base shear, and roof displacements were calculated. The current study aims to analyze the progressive collapse of a G+20 composite building using ETABS software and investigate how its behavior changes under extreme loading conditions based on guidelines from the US General Services Administration.
IRJET- Effect of Infill Wall Stiffness Variations on the Behaviour of RC ...IRJET Journal
This document summarizes a study on the effect of infill wall stiffness variations on the behavior of reinforced concrete buildings under seismic demands. The study models a 5-story reinforced concrete building located in seismic zone III of Nasik City, India, with and without considering the stiffness of infill walls. Static analysis using the equivalent lateral force method and dynamic analysis using the response spectrum method are performed and results such as base shear, fundamental time period, and story shear are compared. The goal is to better understand how accounting for the stiffness of infill walls affects the performance of reinforced concrete buildings during earthquakes.
Finite Element Modeling of a Multi-Storeyed Retrofitted Reinforced Concrete F...IOSR Journals
In the present study, the non-linear response of RC frame using FE modeling under the incremental
loading has been carried out in the first phase of analysis to study the response and load-carrying capacity of a
four storeyed RC frame using non-linear finite element analysis. In the second phase of study an analysis model
for retrofitted RC frame using finite element method using software ATENA is presented. The results obtained
from FE analysis in both cases are compared with the experimental data for four storeyed RC frame tested by
BARC at CPRI. The results from finite element analysis were calculated at the same location as used in
experimental test. The accuracy of the finite element model is assessed by the comparison with experimental
results which are to be in good agreement. The base shear/ displacement curves from finite element analysis
agree well with the experimental results in linear range. The maximum difference in base shear is observed to
be 7.9%
Performance Levels of RC Structures by Non-Linear Pushover AnalysisIJERA Editor
In the recent earthquakes in which many concrete structures have been severely damaged or collapsed, have indicated the need for evaluating the seismic adequacy of existing buildings. About 60% of the land area of our country is susceptible to damaging levels of seismic hazard. We can’t avoid future earthquakes, but preparedness and safe building construction practices can certainly reduce the extent of damage and loss. In order to strengthen and resist the buildings for future earthquakes, the behavior of a building during earthquakes depends critically on its overall shape, size and geometry. The nonlinear pushover analysis is becoming a popular tool for seismic performance evaluation of existing and new structures. The weak zones in the structure can be examined by conducting this push over analysis and then it will be decided whether the particular part is to be retrofitted or rehabilitated according to the requirement. This method determines the base shear capacity of the building and performance levels of each part of building under varying intensity of seismic force. The results of effects of different plan on seismic response of buildings have been presented in terms of displacement, base shear and plastic hinge pattern
Influence of Concrete and Steel Outrigger and Belt Truss in High Rise Moment ...IRJET Journal
1. The document analyzes 7 models of a 44-story reinforced concrete frame building with different outrigger and belt truss configurations to evaluate their effectiveness in reducing lateral displacement, storey drifts, base shear, and fundamental time periods under wind and earthquake loads.
2. Analysis found that a model with X-braced outriggers was most effective at reducing top storey displacement by 29.21% and maximum story drift by 26.64% compared to the bare frame model without outriggers. A model with a belt truss was also effective, reducing displacement by 34.57% and drift by 30.75%.
3. Steel outriggers provided the least benefit, reducing displacement by only
Variation of deflection of steel high rise structure due to p- delta effect c...Yousuf Dinar
This document summarizes the results of a study that analyzed the effect of P-Delta on the deflection of steel high-rise structures considering global slenderness ratio. 40 different structural models were simulated with varying numbers of stories (7, 14, 20, 30) and bay dimensions to modify the slenderness. Both P-Delta analysis and linear static analysis were performed, and deflections were compared. P-Delta analysis resulted in significantly higher deflections than linear static analysis, especially as slenderness increased with taller buildings and smaller bays. Deflections at the top of each structure and for individual stories were evaluated. Results showed increasing deflections with P-Delta analysis as slenderness rose due to building height or
Seismic Performance and Shear Wall Location Assessment of a RC Building- Eva...IRJET Journal
1. The document evaluates the seismic performance of reinforced concrete buildings located on plain and sloping ground.
2. Non-linear static pushover analysis is conducted using SAP 2000 on a G+10 building model located on plain and sloping ground.
3. Results of the pushover analysis such as base shear, story displacement, story drift and story shear are compared between the plain and sloping ground models.
IRJET- Effect of Response Reduction Factor on R.C Building with Different...IRJET Journal
This document summarizes a study that analyzed the effect of different infill materials on the response reduction factor (R) of reinforced concrete buildings. The study used pushover analysis in ETABS to model a 4-story building with either clay brick or lightweight aggregate concrete block infill walls. Response reduction factor was calculated based on overstrength, ductility and redundancy factors from the capacity curves. The results showed that R decreased from 4.55 to 5.17 when using clay brick versus lightweight blocks. Story shear and displacement were also higher with clay brick. Therefore, the study concluded that using lightweight infill material increases the response reduction factor and reduces seismic demands on the building.
Chronological construction sequence effects on reinforced concrete and steel ...Yousuf Dinar
Building structures are analyzed in a single step using linear static analysis on the assumption that the structures are subjected to full load once the whole structure is constructed completely. In reality the dead load due to the each structural components and finishing items are imposed in separate stages as the structures are constructed story by story for nonlinear behavior of materials. Advancement of finite element modeling accelerates the accuracy of finite element simulation by taking the consideration of construction sequential effects. In this paper, rigid frame structures of both concrete and steel model of different configurations have been taken for sequential analysis. The analysis outcomes will help to understand how the structural response against loads varies for construction sequential analysis and linear static analysis while highlighting the material property. For vivid understanding of necessity of sequential analysis, analysis outcomes are eventually compared with conventional one step analysis. The effect of sequence of construction due to the self-weight of members has been studied and its effect on the overall design forces has also been highlighted using finite element modeling.
IRJET- A Review Paper on Seismic Analysis of Old Masonry Buildings using Equi...IRJET Journal
This document provides a literature review on seismic analysis of old masonry buildings using the equivalent static method. It summarizes 15 previous research papers on topics like visual assessment methods for masonry structures, analytical studies of masonry structures under seismic conditions, low-cost earthquake resistant construction methods, seismic performance analysis of heritage masonry buildings, experimental determination of mechanical properties of masonry walls, and homogenization techniques for masonry building analysis. The document aims to provide background research for analyzing the seismic performance of an old masonry palace in Bhopal, India called Chaman Mahal using the equivalent static method outlined in the Indian code IS 1893:2002.
Performance Based Evaluation of Shear Walled RCC Building by Pushover AnalysisIJMER
International Journal of Modern Engineering Research (IJMER) is Peer reviewed, online Journal. It serves as an international archival forum of scholarly research related to engineering and science education.
International Journal of Modern Engineering Research (IJMER) covers all the fields of engineering and science: Electrical Engineering, Mechanical Engineering, Civil Engineering, Chemical Engineering, Computer Engineering, Agricultural Engineering, Aerospace Engineering, Thermodynamics, Structural Engineering, Control Engineering, Robotics, Mechatronics, Fluid Mechanics, Nanotechnology, Simulators, Web-based Learning, Remote Laboratories, Engineering Design Methods, Education Research, Students' Satisfaction and Motivation, Global Projects, and Assessment…. And many more.
Influence of Openings and Local Soil Conditions on the Seismic Behavior of Tu...IRJET Journal
The document analyzes the seismic behavior of tunnel form buildings using response spectrum analysis. Tunnel form buildings are reinforced concrete structures with relatively thin shear walls and flat slabs instead of beams and columns. The study models a 6-story RC wall building to analyze the effects of openings (0%, 6%, 22%, 50%) and soil conditions (bearing capacities of 50, 100, 200, 250) on seismic performance parameters like time period, displacement, drift, and base shear. Response spectrum analysis is performed using ETABS software according to Indian codes. Results show that RC wall buildings have significantly reduced time periods and displacements compared to equivalent RC frame buildings, indicating improved seismic performance.
IRJET- Experimental Study of Floating Column for Seismic Analysis of Multisto...IRJET Journal
This document summarizes an experimental study on the seismic analysis of a multi-story building with and without floating columns. Four building models were created - one without floating columns, and the others with a floating column at the 1st, 2nd, and 3rd floors. The models were analyzed using software to compare the base shear and story displacements under seismic loads. The results showed that buildings with floating columns experienced greater displacements and base shear compared to the building without floating columns, with the highest values for the model with a floating column at the 3rd floor. The study aims to evaluate the effect of floating columns on building behavior during earthquakes.
IRJET- Study on Rigid and Semi Rigid Diaphragm in Multistoried Structure usin...IRJET Journal
This document presents a study on the seismic analysis of multistory reinforced concrete structures considering rigid and semi-rigid floor diaphragms. The study was carried out using ETABS software to analyze structures with rigid diaphragms, semi-rigid diaphragms, and no diaphragms. Results were collected in terms of base shear, maximum story displacement, and maximum story drift for different soil types and seismic zones. The results showed that structures with rigid diaphragms performed better with less displacement compared to structures with semi-rigid or no diaphragms. Rigid diaphragms increased the base shear but reduced displacement by up to 45% and provided better stiffness. In conclusion, rigid
P delta effect in reinforced concrete structures of rigid jointYousuf Dinar
ABSTRACT: Popularity of High-Rise structures of rigid joint frame system are increasing day by day to accommodate growing people in metropolitan city and to construct the structures without any special structural component. However combination of rigid frame with RC structure get 30 storey as maximum storey and prone to collapse under severe displacement, axial force and moment, if the P-Delta effects does not included in analysis and design phase. Due to complexity and low knowledge of P-Delta analyses designers, engineers and architectures are prone to perform Linear Static analysis which may eventually become a cause of catastrophic collapse of the high-rise. 12 cases and 2 different analysis are performed to give a light on the P-Delta effect in RC Structures of Rigid Joint which will aware and suggest concerning person to understand, make experience and perform P-Delta analysis of the high-rise for safety using numerical modelling which may accelerate the process and reduce the complexities.
IRJET- Review Paper on Convincement based Seismic Design of Open Ground Store...IRJET Journal
This document summarizes research on the seismic design of open ground storey framed buildings. It discusses how open ground storey buildings are vulnerable in earthquakes due to soft-storey behavior. The document reviews various studies on seismic analysis of irregular buildings using software like ETABS. It is proposed to conduct time history analysis of multi-storey reinforced concrete buildings considering mass irregularity at different floor levels to understand seismic response. The conclusion discusses how seismic analysis is important for structures and how responses can be reduced by adding shear walls or base isolation.
Seismic Performance Assessment of RCS Building By Pushover AnalysisIOSR Journals
This document discusses a study that assesses the seismic performance of reinforced concrete steel (RCS) frame buildings compared to ordinary reinforced concrete (RC) buildings through pushover analysis. Two 3-story buildings, one RCS and one RC, were modeled and analyzed. The pushover curves showed that while the base shear capacity was similar, the RCS building behaved linearly until maximum shear capacity and then failed in a soft story mechanism. The RC building formed plastic hinges first in beams and then progressively in columns from lower to upper stories until failure. The study found that RCS buildings may perform better seismically by maintaining strength and stiffness up to maximum load capacity.
IRJET- A Study on Effect of LRB Isolators on Varying Height of Rectangula...IRJET Journal
This document analyzes the effect of using lead rubber bearing (LRB) isolators on structures of varying heights when subjected to seismic activity. Non-linear time history analyses were conducted on 4, 10, 15, and 20-story rectangular reinforced concrete structures both with and without LRB isolators. The results showed that using LRB isolators significantly reduced story rotation, acceleration, displacement, and drift across all building heights compared to fixed-base structures. Additionally, LRB isolators increased the natural period of the structures, which decreased the lateral forces experienced. In conclusion, seismic isolation through the use of LRB isolators improved the performance of structures and was more effective at mitigating earthquake effects in taller buildings.
Seismic performance study on rc wall buildings from pushover analysiseSAT Publishing House
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- Seismic Analysis and Comparative Study of Regular and Irregular Bu...IRJET Journal
This document discusses seismic analysis of regular and irregular buildings using ETABS software. A 15-story reinforced concrete building model was generated for both regular and irregular configurations. Mass and stiffness distribution influence how multi-story buildings respond during earthquakes. Irregularities can cause damage as seen in the 2001 Bhuj earthquake in India. The objective is to conduct dynamic analysis of regular and irregular frames and compare results. Analysis considers factors like storey deflection, storey shear, and stiffness. Previous studies found plan configuration and symmetry affect seismic response, with irregular structures experiencing greater damage.
This document analyzes the seismic performance of a G+2 institutional building in Bhopal, India. The building is modeled and analyzed using STAAD.Pro software under different earthquake load combinations. Results are presented for maximum bending moment, shear force, axial force, joint displacement, and section displacement at each floor. The first floor experiences the highest bending moment of 164.07 kNm and maximum joint displacement of 8.484 mm in the X direction under seismic loads. The analysis provides optimal reinforcement for the building to limit damage to Grade 2 under seismic activity.
The document summarizes the planning, analysis, and design of a multispecialty hospital building. It includes the objectives to prepare architectural drawings, analyze the G+2 building using STAAD Pro, and design the building according to IS 456:2000 using the working stress method. It describes analyzing the building's ability to resist lateral loads. Maximum bending moments in beams and columns will depend on their relative rigidity. Structural elements like slabs, beams, columns, footings, and staircases will be designed according to code specifications using the working stress method.
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The document provides details about the planning, analysis, and design of a hostel building project using STAAD Pro software. Key points include:
- The project involves constructing a 4-story hostel building with a total plinth area of 16072.89 sqm.
- STAAD Pro software will be used to analyze the structure by applying loads and obtaining results like shear forces and bending moments.
- The design of structural elements like beams and columns will then be done manually using the results from the STAAD analysis as per code specifications.
- The objectives are to analyze the framed structure both statically and dynamically, and design the structural elements based on the STAAD Pro output
This document describes a thesis submitted for a bachelor's degree in civil engineering. The thesis involves the design of a pre-engineered steel building for an aircraft hangar using STAAD Pro V8i software. The document includes an abstract, table of contents, and the beginning of the introduction chapter which provides background on pre-engineered steel buildings. It also includes certificates from the student's guide and external examiner certifying the work.
Seismic analysis of multi storey reinforced concrete buildings frame”ankialok
The opinion that designing new buildings to be Earthquake resistant will cause substantial additional costs is still among the constructional professionals. In a country of moderate seismicity adequate seismic resistance of new buildings may be achieved at no or no significant additional cost however the expenditure needed to ensure adequate seismic resistance may depend strongly on the approach selected during the conceptual design phase and the relevant design method. Regarding the conceptual design phase early collaboration between the architect and civil engineering is crucial.
THE PROJECT DESCRIBES THE DESIGN OF STRUCTURAL COMPONENTS OF A BUILDING USING STAAD PRO(COLUMNS&BEAMS) & MANUAL(SLABS,FOOTINGS&STAIRCASE).THE PROJECT ALSO CONTAINS THE ESTIMATION & COSTING.THE AUTO CADD IS HELPFUL FOR DRAWINGS.
This document discusses hospital planning and design. It notes that proper planning, design, construction and administration are key to a successful hospital. The planning process involves assessing community needs, conducting market surveys, developing financial plans, selecting sites, designing interior spaces, and planning departments and bed distribution. An effective planning team considers guidance principles like quality patient care and economic viability. The goal of planning is to forecast activities needed to achieve desired goals and design a hospital that serves both patients and administrators.
Design and analasys of a g+3 residential building using staadgopichand's
This document presents a graduation project analyzing and designing a G+3 residential building using STAAD Pro software. The objectives are to carry out analysis and design of structural elements like slabs, columns, and shear walls and get experience with STAAD Pro and AutoCAD. The project building consists of 3 repeated floors in Hyderabad. The document discusses analyzing loads, modeling the building in STAAD Pro, designing columns, beams, slabs, and foundations, and concludes with the advantages and limitations of using structural analysis software.
The document provides details of the proposed Vardan Multi Speciality Hospital project in Ghaziabad, Uttar Pradesh. The key points are:
1) The hospital will have 222 beds initially with 120 beds in the first phase and will provide multi-specialty care.
2) The total project cost for the first phase is estimated to be Rs. 930 lakhs which will cover construction, equipment, furniture and other expenses.
3) The hospital will have departments like medicine, surgery, gynecology, pediatrics etc. and support services like operation theaters, laboratory, radiology etc.
DESIGN AND ANALAYSIS OF MULTI STOREY BUILDING USING STAAD PROAli Meer
This document discusses the design and analysis of a multi-storied residential building using STAAD Pro software. It includes details on the building specifications, applicable codes, loads on the structure, and the design of structural elements like slabs, beams, columns, and footings. The analysis involves assigning materials, loads, properties and performing RCC design in STAAD Pro to verify the safety and serviceability of the building according to codes. The results show the design is safe and meets code requirements. References include design codes and textbooks.
Performance based seismic design of the multi-storied reinforced concrete bui...IRJET Journal
The document discusses performance-based seismic design of multi-story reinforced concrete buildings. It provides a literature review of previous studies that have analyzed buildings using nonlinear static pushover analysis to evaluate seismic performance. The goal of performance-based seismic design is to carefully assess how a structure will perform under earthquake loads by identifying performance objectives and evaluating the structure's capacity through nonlinear analysis. Previous studies have found that performance metrics like story displacement, drift, and base shear can be used to evaluate if a design meets life safety or other performance objectives. The document concludes that further research on nonlinear dynamic analysis and energy dissipation systems could help improve seismic performance estimation of reinforced concrete structures.
SEISMIC RESPONSE OF EXISTING RC BUILDING UNDER REVISED SEISMIC ZONE CLASSIFIC...IAEME Publication
This document summarizes a research paper that analyzes an existing 7-story reinforced concrete building using pushover analysis under old and revised seismic zone classifications. The building was originally designed according to older seismic code provisions. Pushover analysis was conducted in both directions to obtain capacity curves and identify plastic hinge locations. The results show the building can withstand seismic forces with some yielding, providing insight into its real behavior. Comparing demand and capacity points indicates the building's expected performance under different seismic codes.
Study on the effect of special shear walls on seismic behaviour of multi- sto...IRJET Journal
This document reviews research on the effect of special shear walls on the seismic behavior of multi-storey reinforced concrete buildings. It summarizes 11 research papers that studied different shapes, sizes, locations, and configurations of shear walls. The key findings are that shear walls improve seismic performance by increasing stiffness and resisting lateral loads, but they must be designed to ensure adequate ductility. Locating shear walls at the corners or periphery of buildings generally provides the best seismic performance. Openings in shear walls can reduce seismic resistance, with up to 25% openings found to be acceptable without damage.
REVIEW PAPER ON SEISMIC RESPONSE OF FLAT SLAB & CONVENTIONAL SLAB WITH DIFFER...IRJET Journal
This document provides a literature review on the seismic response of flat slab and conventional slab structures with different lateral load resisting systems. It summarizes the findings of various studies on this topic. Key conclusions from reviewed studies include: (1) Flat slab structures with shear walls or bracing systems perform better in resisting lateral loads than bare flat slab frames; (2) Shear walls along the building periphery generally provide better seismic performance than other wall locations; and (3) Outrigger bracing or core shear walls can reduce displacement and drift in flat slab high-rise buildings compared to diagrid or conventional systems. The literature review evaluates seismic parameters like displacement, drift, shear and period for different structural configurations and concludes flat slab with shear walls offers
IRJET- A Research on Comparing the Seismic Effect on Shear Wall Building and ...IRJET Journal
1) The document discusses the seismic effect of shear wall buildings compared to buildings without shear walls. Shear walls help resist lateral forces from earthquakes and winds.
2) Several studies are reviewed that analyze different shear wall configurations in multi-story buildings. Zig zag and diagonal shear wall arrangements were found to increase strength and stiffness compared to other configurations. Shear walls effectively reduce lateral displacements and story drift.
3) One study used software to analyze a 10-story building with different shear wall models and found that a model with short shear walls at corners was the most economical. Shear walls are more effective in high-rise buildings. Proper placement of shear walls affects how lateral forces are distributed
Comparative study of Performance of RCC Multi-Storey Building for Koyna and B...IJERA Editor
The recent history of earthquakes have indicated that if the structures are not properly designed and constructed with required quality may cause great damage to structures. This fact has resulted in to ensure safety against earthquake forces of tall structures hence, there is need to determine seismic responses of such building for designing earthquake resistant structures by carrying seismic analysis of structure. In the present work dynamic analysis of G+12 RC multi-storied framed building considering for Koyna and Bhuj earthquake is carried out by response spectrum analysis and time history analysis and responses of such building are comparatively studied with the help of SAP2000 software. Two time histories (i.e. koyna and Bhuj) have been used to develop different acceptable criteria (base shear, storey displacement, storey drift). From the results it is recommended that time history analysis should be performed as it predicts the structural response more accurately than the response spectrum analysis. Pushover Analysis is also performed for the same building and from results it is found that building is seismically safe.
IRJET- Comparative Study of Effect of Different Positions of Shear Wall o...IRJET Journal
This document presents a comparative study analyzing the effect of different positions of shear walls on transfer girders in 10, 15, 20, 25, and 30-story reinforced concrete buildings with floating columns on the exterior frames. The buildings were analyzed using wind analysis, conventional analysis, and construction stage analysis in ETABS. Results like bending moments and displacements of the transfer girders were compared for models with shear walls at the core, corners, periphery, and without shear walls. The study found that shear walls at different positions reduced structural responses of the transfer girders, with core walls performing best for lower stories and corner walls for mid-height buildings. Conventional analysis generally provided the critical results adopted for design.
A REVIEW ON INFLUNCE OF THE SHEAR WALL IN TALL INFLUENCE STRUCTURE WITHOUT AN...IRJET Journal
This document reviews the influence of shear walls in tall, irregular structures without columns. It discusses how taller buildings are now preferred for urban development but require effective lateral load resistance. Shear walls are commonly used instead of columns for their strength and stiffness, but can make structures too rigid. The document examines different models analyzed in ETABS and STAAD PRO software considering factors like shear wall position, shape, soil type, and seismic zone. Key findings from literature on analyzing irregular structures with and without shear walls using software like SAP2000 and ETABS are summarized. The effect of shear walls on reducing story drift, displacement and base shear is noted. Analyzing different structural configurations helps determine best practices for shear wall placement and irregular structure seismic
Wind and Seismic Analysis of Building with Bracing System Resting on Sloping ...IRJET Journal
This document summarizes a research study that analyzed the wind and seismic performance of buildings with different bracing systems on sloping ground. The study used ETABS software to model and analyze step back buildings with various bracing types, including X, V, inverted V, and diagonal bracing. Results showed that X bracing provided the best performance in terms of maximum displacement, drift, base shear, and fundamental time period. Step back buildings with X bracing demonstrated superior performance under wind and seismic loads compared to step back setback buildings. The effectiveness of bracing was found to be limited for buildings over 6 stories or with an increased number of bays along the slope. Increasing bays across the slope enhanced building performance with bra
COMPARATIVE STUDY OF A STEEL STRUCTURE BUILDING WITH REINFORCED CONCRETE STRU...IRJET Journal
This document compares the performance of a 6-story steel structure building and reinforced concrete structure building under seismic forces using response spectrum analysis in ETABS. Key results include:
- Response spectrum analysis showed maximum displacement and drift in the reinforced concrete structure compared to the steel structure.
- Story shear, base shear, and time period were also higher in the reinforced concrete structure building.
- However, the column sizes were larger in the steel structure building compared to the reinforced concrete structure building.
- Overall, the study found that the steel structure building performed better under seismic excitation according to the response spectrum analysis.
A Review of “Seismic Response of RC Structures Having Plan and Vertical Irreg...IRJET Journal
This document summarizes and reviews a research paper on the seismic response of reinforced concrete (RC) structures with plan and vertical irregularities, with and without infill walls. It discusses how infill walls can improve or reduce the seismic performance of RC buildings, depending on factors like wall layout, height distribution, connection to the frame, and relative stiffness of walls and frames. The reviewed research paper analyzes the behavior of infill walls, effects of vertical irregularities, and seismic performance of high-rise structures under linear static and dynamic analysis. It studies response characteristics like story drift, deflection and shear. The document also provides literature on similar research investigating the effects of infill walls, soft stories, plan irregularities, and different
SEISMIC ANALYSIS USING STAAD Pro FOR L-SHAPED RCC FRAMED BUILDINGIRJET Journal
This document summarizes a study on seismic analysis of L-shaped reinforced concrete framed buildings using STAAD Pro. It discusses the need for P-Delta analysis in tall buildings due to increased lateral displacements. The study analyzes 10-50 story L-shaped buildings with and without P-Delta to compare results. P-Delta analysis shows higher forces, displacements, and drifts compared to linear analysis. It is concluded that P-Delta effects increase with building height and lateral loads, and are substantial for buildings taller than 7 stories.
Structural Analysis and Design of Multi-Storey Symmetric and Asymmetric Shape...IRJET Journal
This document summarizes a research project that aims to compare the structural performance of conventional slab and grid slab systems in multi-story buildings using ETABS software. The study will analyze both symmetric and asymmetric building models under various loading conditions. Parameters like deflections, moments, shears, and stresses will be examined to evaluate the structural effectiveness of each slab type. The results will provide insights into the comparative behavior of conventional and grid slabs to help engineers and architects select appropriate slab systems based on building layouts and design requirements.
Comparative study of tall structures with softstorey openings and shearwallShreehariKulkarni7
This document describes a comparative study of tall structures with soft storey openings and shear walls conducted by Shreehari Kulkarni. It provides background on soft storeys and shear walls, outlines the objectives of analyzing seismic behavior and comparing models with and without shear walls. It also reviews several relevant literature sources that have studied seismic response of buildings with soft storeys and the effectiveness of adding shear walls for retrofitting.
Pushover analysis of setback frame & step frame building with and without she...IRJET Journal
This document summarizes a research paper that analyzes the pushover analysis of setback frame and step frame buildings with and without shear walls using ETABS software. It presents 8 building models including a regular frame, 3 types of step frames with varying setback ratios, and 4 types of setback frames with varying ratios. Nonlinear static (pushover) analysis is performed using response spectrum analysis to understand the performance of irregular frames compared to regular frames in seismic zone III of India. Key response parameters like base shear, story displacement, and story drift are examined. The study aims to provide guidelines for seismic-resistant design of irregular structures.
This document analyzes the seismic performance of irregular L-shaped reinforced concrete buildings of varying heights (4, 8, and 20 stories) located in seismic Zone III. Six models of each building are considered: a bare frame, frame with infill walls modeled as membranes, and frame with infill walls modeled as equivalent diagonal struts. Nonlinear time history and pushover analyses are performed using ETABS. The results show that modeling infill walls improves seismic performance by reducing top story displacement and increasing base shear capacity, with the equivalent strut model performing better than the membrane model. The influence of infill walls decreases with increasing building height.
SEISMIC EVALUATION OF RETROFITING TO REINFORCED CONCRETE BUILDINGSIRJET Journal
This document summarizes a research study on seismic evaluation and retrofitting of existing reinforced concrete buildings. The study analyzed a typical existing hostel building using pushover analysis to evaluate the performance of the bare reinforced concrete frame and infilled frame. The analysis identified weaknesses in the bare frame where beams would fail first during an earthquake. Retrofitting methods using fiber reinforced polymer composites were used to strengthen weak structural members. The study concluded that columns in existing buildings need to be retrofitted to have adequate strength to prevent premature collapse at the performance point during an earthquake.
A Review on Investigation of Effect of Floating Column and Infill Wall on the...IRJET Journal
The document reviews the effect of floating columns and infill walls on the seismic performance of reinforced concrete (RC) structures. It summarizes several previous studies that have found infill walls beneficially increase the rigidity, decrease displacements, and improve the seismic performance of buildings. The document also finds that structures with floating columns have higher displacements and drifts compared to conventional structures without floating columns. While structures with both floating columns and infill walls perform better than ones with just floating columns, structures without floating columns and with infill walls are considered the most suitable for high seismic zones.
ANALYSIS AND DESIGN OF MULTISTORIED EARTHQUAKE RESISTANT BUILDING. “G+25”IRJET Journal
This document summarizes the analysis and design of a 25-story earthquake resistant building (G+25) using STAAD Pro software. The building is modeled and analyzed for dead, live, and seismic loads according to Indian codes. The maximum shear forces and bending moments are determined. The sizes of beams, columns, and other structural elements are designed and reinforced concrete sections are determined. The analysis found that the structural members are safe and economical for the loads designed for, and the sizes obtained from STAAD can be used for construction of the building. Future work could use STAAD to analyze tall buildings under seismic loads and optimize designs using lightweight and self-compacting concrete.
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Static Analysis of G+2 Institutional Building in Bhopal
1. Aakash Saxena et al. Int. Journal of Engineering Research and Applications www.ijera.com
ISSN: 2248-9622, Vol. 5, Issue 8, (Part - 5) August 2015, pp.159-167
www.ijera.com 159 | P a g e
Static Analysis of G+2 Institutional Building in Bhopal
Aakash Saxena, S.S. Khuswaha
Department of Civil Engineering, UIT (RGPV), Bhopal (MP)
ABSTRACT
A Seismic design is aimed at controlling the structural damage based on precise estimations of proper response
parameters. Seismic design explicitly evaluates how a building is likely to perform; given the potential hazard it
is likely to experience, considering uncertainties inherent in the quantification of potential hazard and
uncertainties in assessment of the actual building response. It is an interactive process that begins with the
selection of performance objectives, followed by the development of a preliminary design, an assessment as to
whether or not the design meets the performance objectives, and finally redesign and reassessment, if required,
until the desired performance level is achieved.
In this present study one R.C. buildings, of G + 2 storey institutional building (designed according to IS
456:2000) are analysed. Analysis and redesigning by changing the main reinforcement of various frame
elements and again analyzing. The structural analysis has been carried out using STAAD.Pro V8i, a product of
Structural Analysis and Design Program. A total of 1 cases for a particular G + 2 storey institutional building
located in Zone-II have been analyzed. The results of analysis are compared in terms of reinforcement in the
column and beam. The best possible combination of reinforcement that is economical, effective and whose
damage is limited to Grade 2 (slight structural damage, moderate non structural damage) in order to enable
Immediate Occupancy is determined and is termed as Seismic Design.
I. INTRODUCTION
Amongst the natural hazards, earthquakes have
the potential for causing the greatest damages. Since
earthquake forces are random in nature &
unpredictable, the engineering tools needs to be
sharpened for analyzing structures under the action of
these forces. Performance based design is gaining a
new dimension in the seismic design philosophy
wherein the near field ground motion (usually
acceleration) is to be considered. Earthquake loads
are to be carefully modelled so as to assess the real
behaviour of structure with a clear understanding that
damage is expected but it should be regulated. In this
context pushover analysis which is an interactive
procedure shall be looked upon as an alternative for
the orthodox analysis procedures. This study focuses
on pushover analysis of multi-storey RC framed
buildings subjecting them to monotonically
increasing lateral forces with an invariant height wise
distribution until the preset performance level (target
displacement) is reached. Te promise of
performance-based seismic engineering (PBSE) is to
produce structures with predictable seismic
performance. To turn this promise into a reality, a
comprehensive and well-coordinated effort by
professionals from several disciplines is required.
Performance based engineering is not new.
Automobiles, airplanes, and turbines have been
designed and manufactured using this approach for
many decades. Generally in such applications one or
more full-scale prototypes of the structure are built
and subjected to extensive testing. The design and
manufacturing process is then revised to incorporate
the lessons learned from the experimental
evaluations. Once the cycle of design, prototype
manufacturing, testing and redesign is successfully
completed, the product is manufactured in a massive
scale. In the automotive industry, for example,
millions of automobiles which are virtually identical
in their mechanical characteristics are produced
following each performance-based design exercise.
The primary objective of this work is to compare
the design of building with and without seismic
forces by variation in reinforcement by using
STAAD.Pro of RC framed building designed. The
effect of earthquake force on G+2 storey institutional
building of Bhopal, with the help of STAAD.Pro, for
various different sets of reinforcement at different
levels has been investigated.
Some of the prominent literature on the topic are
as follows:
S.Mahesh and Dr.B.Panduranga Rao (2014)
considered the behaviour of G+7 multi story building
of regular and irregular configuration under
earthquake. A residential of G+7 multi story building
is studied for earthquake and wind load using
STAAD.Pro V8i .Assuming that material properties
and static and dynamic analysis are performed. These
analysis are carried out by considering different
seismic zones and for each zone the behaviour is
assessed by taking three different types of soils
namely Hard , Medium and Soft .
RESEARCH ARTICLE OPEN ACCESS
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Kevadkar, Kodag et.al. (2013) observed that the
structure heavy susceptible to lateral forces may be
concerned to severe damage. In this they found that
along with gravity load (dead load, live load) the
frames are able to withstand to lateral load (loads due
to earthquake, wind, blast, fire hazards etc.) which
can develop high stresses. For that purpose they used
shear wall and steel bracing system to resist such type
of loading like earthquake, wind, blast etc. In this
study according to author R.C.C. building is modeled
and analyzed in STAAD.Pro and results are
compared in terms of Lateral Displacement, Storey
Shear and Storey Drifts, Base shear and Demand
Capacity (Performance point).
P.B. Kulkarni et. al. (2013) Masonry infill walls are
mainly used to increase initial stiffness and strength
of reinforced concrete (RC) frame buildings. It is
mainly considered as a non-structural element. In this
paper, symmetrical frame of college building (G+5)
located in seismic zone-III is considered by modeling
of initial frame. With reference to FEMA-273, &
ATC-40 which contain the provisions of calculation
of stiffness of infilled frames by modeling the infill
panels are modeled as a equivalent diagonal strut
method. This linear static analysis is to be carried out
on the models such as bare frame, strut frame, strut
frame with centre &corner opening, which is
performed by using computer software STAAD.Pro
from which different parameters are computed. In
which it shows that infill panels increase the stiffness
of the structure. While the increase in the opening
percentage leads to a decrease on the lateral stiffness
of infilled frame.
Salehuddun (2011) focused on nonlinear geometric
analysis to be compared with linear analysis. In this
study, a six storey 2-D steel frame structure with 24
m height has been selected to be idealized as tall
building model. The model was analyzed by using
SAP2000 structural analysis software with the
consideration of geometric nonlinear effect. This
study showed that a steel frame with the
consideration of wind load produce greater sway
value as compared to the steel frame without wind
load
Gajjar and DhavalP.Advani(2011) focused on the
design of multi-storeyed steel buildings to have good
lateral load resisting system along with gravity load
system because it also governs the design. This paper
is presented to show the effect of different types of
bracing systems in multi storied steel buildings. For
this purpose the 20 stories steel buildings models is
used with same configuration and different bracings
systems such as knee brace, X brace and V brace is
used. A commercial package STAAD.Pro is used for
the analysis and design and different parameters are
compared. The property of the section is used as per
IS 800:2007 which incorporates Limit State Design
philosophy.
Kevadkar, Kodag et.al. (2013) observed that the
structure heavy susceptible to lateral forces may be
concerned to severe damage. In this they found that
along with gravity load (dead load, live load) the
frames are able to withstand to lateral load (loads due
to earthquake, wind, blast, fire hazards etc) which can
develop high stresses. For that purpose they used
shear wall and steel bracing system to resist such type
of loading like earthquake, wind, blast etc. In this
study according to author R.C.C. building is modeled
and analyzed in STAAD.Pro and results are
compared in terms of Lateral Displacement, Storey
Shear and Storey Drifts, Base shear and Demand
Capacity (Performance point).
Qiang Xue, Chia-Wei Wu et al (2007) summarized
the development of the seismic design draft code for
buildings in Taiwan using performance-based seismic
design methodology and case studied. They presented
the design of a reinforced concrete building by using
the draft code. Seismic design code provisions are
examined according to the theoretical basis of PBSD
to identify which methodologies of PBSD need to be
incorporated into the current seismic design code.
The performance-based seismic design code
introduces a transparent platform in which the owners
and designers can exchange their views on the
expected seismic performance of the buildings under
different levels of earthquakes.
II. Methodology Methodology And
Selection Of Problems
In this present study one R.C. buildings, of G + 2
storey institutional building (designed according to IS
456: 2000) are analysed. Analysis and redesigning by
changing the main reinforcement of various frame
elements and again analyzing. The structural
analysis has been carried out using STAAD.Pro V8i,
a product of Structural Analysis and Design Program.
Following steps are implemented in this study:-
Step-1 Selection of building geometry
Step-2 Selection of seismic zones
TABLE 1: SEISMIC ZONES FOR DIFFERENT
CASES AND MODELS
Case
Model Earthquake zones as per
IS 1893 (part-1) : 2002
Case-1 RCC Structure II
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Step-4 Considering of load combination (13 load
combinations)
TABLE 2: LOAD CASE DETAILS
Load case no. Load case details
1. 1.5 (DL + LL)
Step-4 Modelling of building frames using
STAAD.Pro software.
Step-5 Results evaluation in terms of maximum
bending moment, maximum shear force, axial force,
maximum joint displacement and maximum section
displacement
III. MATERIAL AND GEOMERICAL
PROPERTIES
Following properties of material have been
considered in the modelling -
Density of RCC: 25 kN/m3
Density of Masonry: 20 kN/m3
(Assumed)
Young's modulus of concrete: 5000 𝑓𝑐𝑘
Poisson's ratio: 0.17
The foundation depth is considered at 1.5 m below
ground level and the floor height is 4 m.
LOADING CONDITIONS
Following loadings are considered for analysis -
(a) Dead Loads: as per IS: 875 (part-1) 1987
Self wt. of slab
Slab = 0.15 x 25 = 3.75 kN/m2
(slab thick. 150 mm
assumed)
Floor Finish load = 1 kN/m2
Total slab load = 4.75 kN/m2
Masonry Wall Load = 0.25 m x 2.55 m x 20 kN/m3
=
12.75 kN/m
Parapet wall load = 0.25 m x 1 m x 20 kN/m3
= 5
kN/m
(b) Live Loads: as per IS: 875 (part-2) 1987
Live Load on typical floors = 3 kN/m2
Live Load in earthquake = 0.75 kN/m2
(c) Earth Quake Loads: All Structures are analyzed
for 4 earthquake zones
The earth quake calculation are as per IS: 1893
(2002) [21]
a. Earth Quake Zone-II,III,IV,V
(Table - 2)
b. Importance Factor: 1
(Table - 6)
c. Response Reduction Factor: 5
(Table - 7)
d. Damping: 5%
(Table - 3)
e. Soil Type: Medium Soil (Assumed)
f. Period in X direction (PX):
0.09∗ℎ
𝑑𝑥
seconds
Clause 7.6.2 [21]
g. Period in Z direction (PZ):
0.09∗ℎ
𝑑𝑧
seconds
Clause 7.6.2 [21]
Where h = height of the building
dx= length of building in x direction
dz= length of building in z direction
LOADING DIAGRAM
Typical diagram for different types of loading
conditions are shown below
Figure 1 : Isometric view of institutional building
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Figure 2 : Front view of institutional building
Figure 3 : Plan of institutional building
Figure 4 : 3D rendering view of institutional building
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Figure 5 : Dead load of institutional building
Figure 6 : Live load of institutional building
IV. RESULT AND DISUSSION
The various results like maximum bending
moment, maximum shear force, maximum axial
force, maximum joint displacement and maximum
section displacement are evaluated and effective and
critical floor is determine among the structure
considering seismic loading. Following tables and
graphs are presented to find optimum system to resist
seismic forces under following heads:-
A. Maximum Bending Moment
TABLE 3: MAX. BENDING MOMENT (Mz) kNm
FLOOR WISE
MAX. BENDING MOMENT (Mz) kNm FLOOR WISE
FLOOR BENDING MOMENT kNm
GF 40.13
FIRST 149.053
SECOND 145.478
TOP 122.234
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FIGURE 7: MAX. BENDING MOMENT (Mz) kNm FLOOR WISE
B. Shear Force
TABLE 4 : MAXIMUM SHEAR FORCE kN FLOOR WISE
MAXIMUM SHEAR FORCE Kn FLOOR WISE
FLOOR SHEAR FORCE kN
GF 54.107
FIRST 229.203
SECOND 227.219
TOP 191.089
FIGURE 8: MAXIMUM SHEAR FORCE kN FLOOR WISE
C. Axial Force
TABLE 5: MAXIMUM AXIAL FORCE KN
MAXIMUM AXIAL FORCE KN
FLOOR AXIAL FORCE KN
BASE 1733.519
GF 1584.462
FIRST 1016.806
SECOND 452.876
0
50
100
150BENDINGMOMENTkNm
FLOOR
BENDING MOMENT kNm
BENDING MOMENT kNm
0
100
200
300
GF FIRST SECOND TOP
SHEARFORCEkN
FLOOR
SHEAR FORCE kN
SHEAR FORCE kN
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FIGURE 9 :MAXIMUM AXIAL FORCE KN
D. Maximum Joint Displacement
TABLE 6: MAX. JOINT DISPLACEMENT MM FLOOR WISE IN X DIRECTION
MAX. JOINT DISPLACEMENT MM FLOOR WISE
FLOOR DISPLACEMENT IN X DIRECTION
GF 0.015
FIRST 0.082
SECOND 0.253
TOP 0.577
FIGURE 10: MAX. JOINT DISPLACEMENT MM FLOOR WISE IN X DIRECTION
TABLE 7: MAX. JOINT DISPLACEMENT MM FLOOR WISE IN Z DIRECTION
MAX. JOINT DISPLACEMENT MM FLOOR WISE
FLOOR DISPLACEMENT IN Z DIRECTION
GF 0.018
FIRST 0.107
SECOND 0.36
TOP 0.812
0
500
1000
1500
2000
BASE GF FIRST SECOND
AXIALFORCEKN
FLOOR
AXIAL FORCE KN
AXIAL FORCE KN
0
0.2
0.4
0.6
GF FIRST SECOND TOP
JOINTDISPLACEMENT(MM)
FLOOR
DISPLACEMENT IN X DIRECTION
DISPLACEMENT IN X
DIRECTION
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FIGURE 11: MAX. JOINT DISPLACEMENT MM FLOOR WISE IN Z DIRECTION
E. Maximum Section Displacement
TABLE 8: MAX. SECTION DISPLACEMENT MM FLOOR WISE IN X DIRECTION
MAX. SECTION DISPLACEMENT MM FLOOR WISE
FLOOR DISPLACEMENT IN X DIRECTION
GF 0.356
FIRST 1.529
SECOND 1.513
TOP 1.343
FIGURE 12: MAX. SECTION DISPLACEMENT MM FLOOR WISE IN X DIRECTION
TABLE 9: MAX. SECTION DISPLACEMENT MM FLOOR WISE IN Z DIRECTION
MAX. SECTION DISPLACEMENT MM FLOOR WISE
FLOOR DISPLACEMENT IN Z DIRECTION
GF 0.571
FIRST 1.529
SECOND 1.513
TOP 1.343
0
0.5
1
GF FIRST SECOND TOP
JOINTDISPLACEMENT(MM)
FLOOR
DISPLACEMENT IN Z DIRECTION
DISPLACEMENT IN Z
DIRECTION
0
0.5
1
1.5
2
GF FIRST SECOND TOP
SECTIONDISPLACEMENT
(MM)
FLOOR
DISPLACEMENT IN X DIRECTION
DISPLACEMENT IN X
DIRECTION
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TABLE 13: MAX. SECTION DISPLACEMENT MM FLOOR WISE IN Z DIRECTION
V. CONCLUSIONS
In this study, performance of institutional
building frames are studied considering various
combination and seismic parameters. Results of this
parametric study are as follows
1. In beam forces, maximum bending moment and
maximum shear force are calculated and it is
observe that second floor is critical and ground
floor is efficient because of direct contact with
soil and foundation.
2. In column force, maximum axial force is
calculated and it is observed that maximum load
is in base columns because it resist complete
load of institutional building and as seen in top
floor axial force is reduced up to 4 times of base
3. In joint displacement, maximum displacement is
seen in top floor in both direction ( X and Z
direction) but Z direction is more critical than X
direction.
4. In section displacement, maximum displacement
is seen in first floor section in both direction ( X
and Z direction)
REFERENCES
[1.] S.Mahesh and Dr.B.Panduranga Rao
Comparison of analysis and design of
regular and irregular configuration of multi
Story building in various seismic zones and
various types of soils using STAAD-
Volume 11, Issue 6 Ver. I (Nov- Dec. 2014),
PP 45-52
[2.] Kevadkar M.D., Kodag P.B., 'Lateral load
(loads due to earthquake, wind, blast, fire
hazards etc) (earthquake loads, wind loads,
blast, fire hazards etc) Analysis of R.C.C.
Building', International Journal of Modern
Engineering Research (IJMER), Vol.3,
Issue.3, May-June. 2013, pp-1428-1434.
[3.] Salehuddin Shamshinar, Stability of a six
storey steel frame structure, International
Journal of Civil & Environmental
Engineering, Vol.13 No.06, 2011. User
Manual STAAD.Pro.
[4.] Chopra, A. K., Dynamics of
Structures(1995): Theory and Applications
to Earthquake Engineering, Prentice-Hall.
Inc., Englewood Cliffs, New Jersey.
[5.] IS 1893 : 2002, Indian Standard criteria for
earthquake resistant design of frames, Part 1
General provisions and buildings, Draft of
Fifth Revision, Bureau of Indian Standards,
New Delhi, 2002.
[6.] IS 800:2007, ‘General construction in steel –
Code of practice Bureau of Indian standards,
New Delhi.
[7.] IS: 875(Part-1)- 1987 ‘Code of Practice for
Design Loads (Other than Earthquake)
buildings and frames’, Part-1 Dead load,
Unit weight of building materials and stored
materials, Bureau of Indian Standards, New
Delhi.
[8.] IS: 875(Part-2) - 1987 ‘Code of Practice for
Design Loads (Other than Earthquake)
buildings and frames’, Part-2 Imposed loads,
Bureau of Indian Standards, New Delhi.
[9.] IS: 875(Part-3) - 1987 ‘Code of Practice for
Design Loads (Other than Earthquake) for
buildings and structures’, Part-3Wind loads,
Bureau of Indian Standards, New Delhi.
0
0.5
1
1.5
2
GF FIRST SECOND TOP
SECTIONDISPLACEMENT
(MM)
FLOOR
DISPLACEMENT IN Z DIRECTION
DISPLACEMENT IN Z
DIRECTION