Earthquake analysis by psudeo static method
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This document provides instructions for performing an earthquake analysis on a structure using the pseudo-static method in STAAD v8i. The steps include: 1. Defining the seismic parameters by adding a seismic definition and inputting values for the zone, response factor, importance factor, etc. based on IS 1893:2002. 2. Creating earthquake load cases in the X and Z directions and combining them with dead and live loads. 3. Assigning pin supports and obtaining support reactions for analysis. 4. Importing the support reaction values into Excel to create weight tables that are then input back into STAAD. 5. Removing the pin supports and assigning fixed supports at the foundation before running the full analysis
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This document provides steps for performing an earthquake analysis using the response spectrum method in STAAD v8i. Key steps include:
1. Generating primary load cases for the X and Z directions using the specified code spectrum
2. Modeling dead and live loads
3. Obtaining support reactions for a load combination of dead + 0.25 live loads
4. Exporting the support reaction values to Excel tables
5. Importing the Excel tables back into STAAD as joint loads to apply the earthquake loads
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Earthquake analysis by Response Spectrum Method
This document provides steps for performing an earthquake analysis using the response spectrum method in STAAD v8i. Key steps include:
1. Generating primary load cases for the X and Z directions using the specified code spectrum
2. Modeling dead and live loads
3. Obtaining support reactions for a load combination of dead + 0.25 live loads
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This document reports on a simulation of an LC circuit with a 220V AC supply. It includes:
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2. Images showing the components used in the simulation, including an inductor, capacitor, voltage measurement, AC source, and scope.
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Some notes from professor that may help the project..docx
Some notes from professor that may help the project.
University of California, Irvine CEE 155
Department of Civil & Env. Engineering Fall Quarter 2016
1
CEE 155 Project
We are interested in designing of a 4-story building with the following plan view.
[email protected]’
140’
3
@
2
0
’
1
0
0
’
Geometry and Loading:
1. Hight of the first story is 15’. Height of other stories are 13’.
2. Use centerline model for analysis.
3. Dead load = 100psf, live load = 50 psf, exterior cladding load = 25psf
4. Fy = 50 ksi.
5. Seismic loads and information
a. Basic: Site class D, given SDS = 1.0g, SD1 = 0.6g. I = 1.0, R = 8, Cd = 5.5.
b. Story and Building Seismic Weight: Wi = 140*100*wD. W = 4*Wi
c. Building Period: T ≤ 1.4Ta, Ta = 0.028hn0.8
d. Seismic Base Shear: V = CsW, Cs = SDS/(R/I) , Cs ≤ SD1/[T(R/I)].
e. Seismic Loads per floor:
i. VCF vxx ,
ii.
n
i
k
ii
k
xx
vx
hw
hw
C
1
iii. x = floor number (1 = ground, N+1 = roof).
iv. k = 1.0 for T < 0.5 sec., k = 2.0 for T > 2.5 sec., Linear
interpolation in between.
f. Each frame takes half the seismic load.
g. Ignore accidental torsion.
University of California, Irvine CEE 155
Department of Civil & Env. Engineering Fall Quarter 2016
2
Analysis:
1. Use simplified analysis methods.
2. Use Portal Method for analysis.
System Design:
1. Allowable story drift at DBE, a = 0.02hi.
2. Drift demand = i = Cd* e/I = 5.5e.
Beam Design:
1. Stiffness design: This is covered during the system design section.
2. Strength design:
a. Load combinations:
i. 1.2MD + 1.6ML
ii. (1.2 + 0.2SDS)MD + 0.5ML + 1.0ME
3. Zmin = (Load Comb.)/(0.9*50)
a. Select only compact sections.
b. Same size in each floor.
c. Vary over height only if more than 5% different in weight.
d. Estimate section from Zactual = 1.5Zmin
Column Design:
1. Stiffness design: This is covered during the system design section.
2. Strength design [This means axial (PD & PL) and moments (MD & ML)]:
a. Load combinations:
i. 1.2MD + 1.6ML
ii. (1.2 + 0.2SDS)MD + 0.5ML + 1.0ME
3. Distinguish clearly between exterior and interior columns.
4. Estimate PD and PL from tributary area concept.
5. Do preliminary column sizing based on these load combinations (rough, because
needs to be revised later)
i. Assume Ky = 1.0
ii. Stay with one column nominal depth (either W14, or 24)
iii. Mu,x = B1Mnt + B2Mlt. B1 = 1.0 (usually only slightly larger). B2 =
according to AISC Manual.
iv. Strong column design except for the top story:
*
*
1.0
pc
pb
M
M
M*pb = 1.1RyFyZb + Mv (use Ry = 1.1)
Attention, using RBS then Zb is of reduced section!
University of California, Irvine CEE 155
Department of Civil & Env. Engineering Fall Quarter 2016
3
Submission Requirments:
1. The data.inp file updated with your design.
.
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Some notes from professor that may help the project..docx
Some notes from professor that may help the project.
University of California, Irvine CEE 155
Department of Civil & Env. Engineering Fall Quarter 2016
1
CEE 155 Project
We are interested in designing of a 4-story building with the following plan view.
[email protected]’
140’
3
@
2
0
’
1
0
0
’
Geometry and Loading:
1. Hight of the first story is 15’. Height of other stories are 13’.
2. Use centerline model for analysis.
3. Dead load = 100psf, live load = 50 psf, exterior cladding load = 25psf
4. Fy = 50 ksi.
5. Seismic loads and information
a. Basic: Site class D, given SDS = 1.0g, SD1 = 0.6g. I = 1.0, R = 8, Cd = 5.5.
b. Story and Building Seismic Weight: Wi = 140*100*wD. W = 4*Wi
c. Building Period: T ≤ 1.4Ta, Ta = 0.028hn0.8
d. Seismic Base Shear: V = CsW, Cs = SDS/(R/I) , Cs ≤ SD1/[T(R/I)].
e. Seismic Loads per floor:
i. VCF vxx ,
ii.
n
i
k
ii
k
xx
vx
hw
hw
C
1
iii. x = floor number (1 = ground, N+1 = roof).
iv. k = 1.0 for T < 0.5 sec., k = 2.0 for T > 2.5 sec., Linear
interpolation in between.
f. Each frame takes half the seismic load.
g. Ignore accidental torsion.
University of California, Irvine CEE 155
Department of Civil & Env. Engineering Fall Quarter 2016
2
Analysis:
1. Use simplified analysis methods.
2. Use Portal Method for analysis.
System Design:
1. Allowable story drift at DBE, a = 0.02hi.
2. Drift demand = i = Cd* e/I = 5.5e.
Beam Design:
1. Stiffness design: This is covered during the system design section.
2. Strength design:
a. Load combinations:
i. 1.2MD + 1.6ML
ii. (1.2 + 0.2SDS)MD + 0.5ML + 1.0ME
3. Zmin = (Load Comb.)/(0.9*50)
a. Select only compact sections.
b. Same size in each floor.
c. Vary over height only if more than 5% different in weight.
d. Estimate section from Zactual = 1.5Zmin
Column Design:
1. Stiffness design: This is covered during the system design section.
2. Strength design [This means axial (PD & PL) and moments (MD & ML)]:
a. Load combinations:
i. 1.2MD + 1.6ML
ii. (1.2 + 0.2SDS)MD + 0.5ML + 1.0ME
3. Distinguish clearly between exterior and interior columns.
4. Estimate PD and PL from tributary area concept.
5. Do preliminary column sizing based on these load combinations (rough, because
needs to be revised later)
i. Assume Ky = 1.0
ii. Stay with one column nominal depth (either W14, or 24)
iii. Mu,x = B1Mnt + B2Mlt. B1 = 1.0 (usually only slightly larger). B2 =
according to AISC Manual.
iv. Strong column design except for the top story:
*
*
1.0
pc
pb
M
M
M*pb = 1.1RyFyZb + Mv (use Ry = 1.1)
Attention, using RBS then Zb is of reduced section!
University of California, Irvine CEE 155
Department of Civil & Env. Engineering Fall Quarter 2016
3
Submission Requirments:
1. The data.inp file updated with your design.
.
Comparative study of a multi – storied building with and without shear wall b...
This document describes a comparative study using STAAD.Pro software to analyze a mid-rise (G+5) and high-rise (G+10) building with and without shear walls. The study aims to identify the load case with the greatest story drift and determine the maximum drift values and heights. A 3D model of each building is created in STAAD.Pro and assigned materials, member properties, loads, and load combinations based on Indian codes. An analysis is run to obtain member forces and support reactions. Story drift values will then be compared between models to evaluate their structural performance.
E0344042054
International Journal of Engineering and Science Invention (IJESI) is an international journal intended for professionals and researchers in all fields of computer science and electronics. IJESI publishes research articles and reviews within the whole field Engineering Science and Technology, new teaching methods, assessment, validation and the impact of new technologies and it will continue to provide information on the latest trends and developments in this ever-expanding subject. The publications of papers are selected through double peer reviewed to ensure originality, relevance, and readability. The articles published in our journal can be accessed online.
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This document summarizes the analysis and design of a 10-story reinforced concrete building under seismic load. It describes the structural configuration, location in seismic zone 4, and application of both gravity and lateral loads. Static and dynamic analyses were performed using 26 and 18 load combinations respectively. Story drifts, displacements, and shears from the static and dynamic analyses were compared and found to be within acceptable limits. Beam and column sections were designed based on the static analysis results.
App2_Seismic Design for RC Building.pdf
This document describes the seismic design of a reinforced concrete building modelled in ETABS. It involves:
1) Modelling the building as a 3D frame with beams, columns, walls and floors. Loads including gravity, wind and seismic are applied.
2) Performing response spectrum analysis to calculate seismic forces from the design spectrum.
3) Designing the reinforced concrete members for strength including beams, columns and walls based on ACI 318 code provisions for seismic design of special moment frames.
4) Outputting the design results for reinforced concrete members with reinforcement details.
U1- Part-1.pdf
This document provides an introduction to a course on reinforced cement concrete design. It outlines the topics that will be covered in Unit 1, including objectives of structural design, steps in the design process, types of loads and load combinations, relevant code of practices, and design philosophies like working stress method and limit state design. It also gives brief descriptions of some key topics like dead and live loads based on code specifications. The overall objective of the course is for students to learn how to design basic reinforced concrete elements.
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This document analyzes and compares the design of a 15-story reinforced concrete structure with an H-shape in different seismic zones of India. Two models are considered - one with connecting beams between the wings of the H-shape and one without. Both models are modeled and analyzed in STAAD Pro software. The results, including shear forces, bending moments, deflections, and steel reinforcement percentages, are compared for the two models across zones II through V. The analysis shows marginal differences between the two models, with the model without connecting beams performing slightly worse in some parameters. The document concludes that connecting beams have little impact on the structural behavior but can improve construction.
D012211830
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Evaluation of Fixed Base vs. Base Isolated Building Systems
This document compares the seismic performance of a 6-story building designed with a fixed base versus one with a base isolation system. It first describes the modeling and design of the fixed base building in ETABS and manually, where story drift was found to be the controlling factor. Member sizes of C45x45 columns and B45x35 beams were determined to satisfy demands. The modeling of the isolated building in ETABS used response spectrum analysis, with lateral forces much less than the fixed base building. The same member sizes were found to satisfy the reduced demands. Manual calculations of the seismic design parameters and story drift checks are shown for both the fixed base and isolated base buildings according to codes.
Example D.1 W-shape tension member
This document summarizes the modeling and analysis of a W-shape tension member example from the AISC steel design manual in Femap and SDC Verifier software. The results of the tensile yielding and slenderness limit calculations from SDC Verifier are compared to the example in the AISC manual and match closely. This demonstrates the validity of SDC Verifier for performing structural steel design calculations according to the AISC specification.
SEISMIC RESPONSE STUDY OF MULTI-STORIED REINFORCED CONCRETE BUILDING WITH FLU...
This document summarizes a study that analyzed the seismic response of multi-story reinforced concrete buildings with the addition of fluid viscous dampers. The study used ETABS software to model buildings with and without dampers and subjected them to modal, time history and pushover analyses. It was found that buildings with fluid viscous dampers experienced reduced time periods of up to 90% and reduced base shear of up to 70% compared to buildings without dampers. Maximum story displacements were also reduced with the addition of fluid viscous dampers.
EQ06.pdf
This document provides an example for designing a beam in a four-storey RC frame building located in seismic zone V. The beam is designed according to IS 13920:2016. Load combinations including earthquake loads are considered for design. The maximum shear and bending moment values under different load combinations are calculated. Reinforcement required at different sections of the beam is calculated to resist the bending moments based on limit state design approach. Detailed calculations are shown for flexural design at the left end of the beam to illustrate the provisions of IS 13920:2016.
Explanatory Examples on Ductile Detailing of RC Buildings.pdf
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ANALYSIS AND DESIGN OF RESIDENTIAL TOWER BY DYNAMIC ANALYSIS USING RESPONSE S...
This Project Named As “Analysis And Design Of Residential Tower (2basemetns+Stilt+31 Upper Floors)By Dynamic Analysis
Using Response Spectrum Method” Involves The Analysis And Design Of Residential Tower 3-D Frames Of Uniform
Floor heights for typical floors using very popular software tool ETABS 9.7.2.
The main thesis of this Project is to achieve the following:
1).To arrive at minimum number of modes required to get modal mass participating ratio more than 90% by dynamic
analysis using Response Spectrum Method.
2). To limit the lateral deflection at the top of the tower less than H/250(Where H = Height of the tower till terrace) for
seismic load.
3). To limit the Inter Storey Deflection(Storey Drift) in any storey due to the minimum specified design lateral force,
with factor of 1.0 less than 0.004 times the storey height.
Comparative Parametric Study of Seismic Behaviour of RC Framed Building With ...
This document presents a comparative parametric study of the seismic behavior of reinforced concrete framed buildings with and without floating columns in different configurations. Three models of a G+20 building were analyzed using software: a normal model without floating columns, a model with 12 alternate floating columns including corners, and a model with 12 alternate floating columns excluding corners. Results showed column forces, beam forces, base shear, displacement, and drift increased in the models with floating columns compared to the normal model without floating columns. The model with floating corner columns experienced more severe increases in design parameters than the model without floating corner columns. Therefore, floating columns should be avoided in high seismic zones and corner columns should not be floated if they must be used.
Project Staad pro.pptx
The document describes the analysis and design of a 21-storey residential building using STAAD Pro software. It includes generating the building model, applying loads such as dead, live, wind and seismic loads, performing load combinations, and designing the building members to satisfy code requirements. The building was modeled based on its dimensions and material properties were specified. Loads were applied using the software's load generators and the building was analyzed and designed for flexure and shear according to Indian codes.
Structural anaysis and design of g + 5 storey building using bentley stadd pr...
SOFTWRAE TRAINING PRESENTATION ON STRUCTURAL ANAYSIS AND DESIGN OF G + 5 STOREY BUILDING USING BENTLEY STADD PRO SOFTWARE
group internship ppt.pdf
The document discusses an internship report submitted for a degree in civil engineering. It summarizes analyzing and designing a 2D frame structure using STAAD Pro software. Key steps included modeling the structure as beams and columns, assigning element properties and supports, applying dead and live loads, and obtaining outputs like bending moment and shear force diagrams and displacement results. The software helps reduce workload but manual detailing is more suitable for field implementation.
Etabs example-rc building seismic load response-
This document provides step-by-step instructions for performing a modal response spectra analysis and design of a 10-story reinforced concrete building model in ETABS. It describes opening an existing model, defining response spectrum functions and cases based on IBC2000 parameters, running a modal analysis and response spectral analysis, and reviewing results including mode shapes, member forces, and designing concrete frames and shear walls. The objective is to demonstrate modal response spectra analysis and design of the building model according to IBC2000 seismic code provisions.
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Some notes from professor that may help the project..docx
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Comparative study of a multi – storied building with and without shear wall b...
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Analysis and design of high rise rc building under seismic load
Analysis and design of high rise rc building under seismic load
IRJET- Analysis and Design of High-Rise RC Structure in Different Seismic Zones
IRJET- Analysis and Design of High-Rise RC Structure in Different Seismic Zones
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SEISMIC RESPONSE STUDY OF MULTI-STORIED REINFORCED CONCRETE BUILDING WITH FLU...
SEISMIC RESPONSE STUDY OF MULTI-STORIED REINFORCED CONCRETE BUILDING WITH FLU...
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Chapter wise question papers_bce
This document contains a question bank for the Basic Civil Engineering subject divided into 9 units. Each unit contains 6 questions related to topics within that unit. The questions range from 3-10 marks and cover topics such as sub-branches of civil engineering, surveying, remote sensing, dams, roads, building construction principles, materials, and steel structures. This question bank can be used to prepare for exams on basic civil engineering concepts and their applications.
Design of staircase_practical_example
The document provides design details for staircases on three floors of a building, including dimensions, load calculations, and reinforcement details. Load calculations are performed to determine bending moments and shear forces. Reinforcement area, bar diameter, and spacing are calculated for the waist slabs of each staircase to resist the determined bending moment and satisfy code requirements for minimum steel and shear capacity.
Presentation "Use of coupler Splices for Reinforcement"
This document presents a summary of a presentation on the use of coupler splices for reinforcement. The presentation includes an introduction to coupler splices, a literature review on the topic, details on the experimental procedure used to test coupler splices, a cost analysis comparing coupler splices to lap splices, and conclusions. The experimental results show that coupler splices performed better than lap splices and welded splices in tensile loading tests. A cost analysis also determined that coupler splices provide significant cost savings over lap splices by reducing the amount of reinforcement required. The conclusion is that coupler splices are an effective and economic replacement for lap splices in reinforcement.
Guidelines_for_building_design
This document provides guidelines for the design of reinforced concrete structures in buildings according to the limit state method. It outlines the general process for building design which includes studying architectural drawings and field data, preparing reinforced concrete layouts, analyzing structural frames, and designing columns, beams, slabs, and footings. Computer programs like STAAD and in-house software are used to aid in analysis and design. Designers are advised to be familiar with relevant Indian code provisions and follow the guidelines to independently complete reinforced concrete designs for buildings.
Strength of materials_I
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Presentation_on_Cellwise_Braced_frames
This presentation discusses the seismic response of cellwise concentrically braced frames. It introduces cellwise braced frames as a structural system that provides lateral stability through bracing elements arranged in cells within each bay. The document describes a study that analyzed 5 bay, 12 story reinforced concrete frames with different bracing configurations, including single-cell, two-cell, and three-cell arrangements. The study found that single-cell A-braced frames provided the highest material cost savings of up to 9.59% compared to bare frames. Two-cell and three-cell configurations further improved cost savings but required additional bracing. Overall, the study shows that optimally arranged cellwise braced frames produce a stiff, strong and econom
Study of MORT_&_H
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List of various_IRCs_&_sps
The Indian Road Congress (IRC) was established in 1934 on the recommendations of the Jayakar Committee to oversee road development in India. It is the apex body for highway engineers and professionals. IRC has over 16,700 members from both public and private sector organizations involved in roads. It aims to promote standard specifications and best practices for road and bridge construction through various technical committees. It has published over 100 codes of practice and guidelines and oversees research activities through its Highway Research Board.
Analysis of multi storey building frames subjected to gravity and seismic loa...
This document summarizes a study on the seismic response of reinforced concrete frames with varying numbers of bays and storeys. Three frame configurations - 3 bay, 5 bay, and 7 bay with 9 stories each - were modeled and analyzed under gravity and seismic loads. Both prismatic frames and frames with non-prismatic elements like stepped beams and haunches at beam-column joints were considered. The effects of variables like haunch size, beam inertia, and live load patterns on internal forces and storey drift were examined. Key results showed that non-prismatic elements can reduce bending moments and axial forces compared to conventional prismatic frames.
Seismic response of _reinforced_concrete_concentrically_a_braced_frames
This document discusses the seismic response of reinforced concrete concentrically braced frames. It analyzes numerically various bracing patterns for a 5-bay 12-story building, including bare frames, fully braced frames, and partially braced frames with bracing applied at the bay-level or level-wise. Optimum bracing patterns are identified that reduce internal forces in columns and provide economic savings compared to bare frames or fully braced frames. Graphs show variations in axial, shear and bending forces for different bracing patterns, identifying patterns that fall within acceptable ranges. Savings of up to 7.87% are achieved with the optimum bracing patterns.
Use of mechanical_splices_for_reinforcing_steel
The document discusses the use of mechanical splices (couplers) as an alternative to traditional lap splicing for reinforcing steel. It provides details on different types of couplers, including threaded couplers. Experimental testing showed that couplers achieved similar or higher yield and ultimate stresses as compared to normal and welded reinforcing bars. While ductility was slightly reduced, factors like epoxy injection and staggered splicing can improve ductility. A cost analysis found that couplers provide significant cost savings over lap splices due to reduced steel requirements. Therefore, the study concludes that mechanical splices are an effective and economic replacement for lap splices.
Guide lines bridge_design
This document provides guidelines for bridge design in the Public Works Department. It introduces the contents and chapters, which cover aspects of bridge design, components, innovative structures, preparation of bridge projects, and other topics. The guidelines are intended to help engineers understand the department's practices for bridge design. The second edition was revised with new chapters and information to aid both new and experienced engineers.
Dissertation report
This document presents the layout and introduction for a dissertation report on analyzing multi-storey partially braced frames subjected to seismic and gravity loads using V-braces. The layout includes sections on introduction, literature review, structural analysis methods, earthquake analysis methods, theoretical formulation, results and discussion, conclusion, and references. The introduction discusses the importance of tall structures and braced frames, noting advantages of braced frames include increased strength, stiffness, and reduced member sizes.
Seismic response of cellwise braced reinforced concrete frames
The document analyzes the seismic response of reinforced concrete frames with different patterns of reinforced concrete bracing. Numerical models of 5-bay, 12-story reinforced concrete frames were analyzed with different bracing configurations including bare frames, fully braced, partially braced, outrigger braced, and cellwise braced. The responses, including internal forces, displacements, and member sizes, were compared for each configuration. Optimal baywise and levelwise locations for bracing were identified based on producing smaller internal forces within acceptable ranges. Cellwise bracing was explored as a configuration that combines advantages of other patterns while allowing for clear openings.
Water Management
This document provides information about water management topics including sources of water, dams, canals, and irrigation methods. It discusses surface and underground water sources like ponds, lakes, rivers, wells, and tube wells. It describes different types of dams such as earth dams, rock-fill dams, gravity dams, and arch dams. Canals are described as the trenches that distribute water from reservoirs for irrigation. Various irrigation methods are outlined including flow irrigation, flood irrigation, storage irrigation, drip irrigation, and spray irrigation. Rainwater harvesting is introduced as a way to conserve water by collecting and filtering rainwater runoff and roof runoff to recharge underground water sources.
Chaper wise qpapers_bce
1. The document contains a question bank for the Basic Civil Engineering section covering topics like introduction to civil engineering, surveying, linear measurements, bearing, and leveling.
2. It includes 36 questions on surveying topics like chain surveying, compass surveying, and leveling with multiple parts and variations. Calculations and sketches are required to solve some questions.
3. The leveling questions provide staff readings and require entering data in a standard leveling table, calculating reduced levels using different methods, and applying arithmetic checks.
Basic Loads Cases
The document defines various types of loads that should be considered in structural analysis, including dead loads, live loads, wind loads, and earthquake loads. It provides details on how to apply these loads in both positive and negative directions of the X and Z axes. It also lists load combinations that should be analyzed according to Indian standards, including combinations for limit states of collapse and serviceability. The load combinations include factors for dead, live, wind, and earthquake loads.
Basic Civil Engineering MCQ
The document contains a 58 question multiple choice test on basic civil engineering. The test covers topics such as surveying, building construction materials and techniques, structures, and other basic civil engineering concepts. The questions assess knowledge of concepts like types of surveying, building components, properties of materials like concrete and masonry, earthquake resistance techniques, and more.
PROBLEMS ON BEARINGS
1. The document provides examples of problems involving bearings observed in closed traverse surveys. It discusses calculating included angles, checking for angular errors, and correcting bearings based on lines assumed to be free from local attraction effects.
2. The first example shows calculations for a traverse with station positions, observed fore and back bearings, differences between bearings, included angles, and corrected bearings and stations free from attraction.
3. Several multi-part problems are presented involving calculating included angles from observed bearings, checking for errors, correcting bearings, and identifying stations free from local attraction for closed traverses. Step-by-step working is demonstrated for one example.
More from Pralhad Kore (20)
Presentation "Use of coupler Splices for Reinforcement"
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Analysis of multi storey building frames subjected to gravity and seismic loa...
Seismic response of _reinforced_concrete_concentrically_a_braced_frames
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