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- 1. SWATISTRUCTURE SOLUTION H.O.: 503, 5TH FLOOR SACHDEVA CORPORATE TOWERPLOT No. 8, COMMUNITY CENTRE, SECTOR-8, ROHINI DELHI-110085 E-mail:-swaticonsultant@gmail.com Web: swatistructuresolutions.com submitted by: ANKUR KUMAR Reg no.:-9910003003 3rd YEAR, B.TECH
- 2. INPLANT TRAINING REPORT Submitted By ANKUR KUMAR Reg no.:-9910003003 3rd YEAR, B.TECH In partial fulfillment of Bachelor of Technology in CIVILENGINEERING From 6/12/2012 to 27/12/2012 KALASALINGAM UNIVERSITY (Kalasalingam Academy of Research and Education) Krishnankoil-626190
- 3. COMPANY PROFILEEstablished in 1990, Swati Structure Solution Pvt. Ltd. stands forQuality, Reliability and Trustworthiness. Amultifacetedorganization, SSPL provides an entiregamut ofsolutions, be it in Architecture, Infrastructure, Engineering andPlanning.SSSPLwholly owned Indian company. SSSPLis one of the fastestgrowing infrastructure consultants in India. With offices in NewDelhi & Chandigarh and plans to develop offices in south India.Our current areas of operations include Transport Planning,Roads,Bridges, Rail& Buildings. Today, there are more than 45staff employed by SSPL in Delhi & Chandigarh, includingspecialists in the fields of transportation,highways, rail, bridgesand civil engineering.Our employees have achieved several milestones, which are oftremendous importance to them and the company.AREA OF EXCELLENCESectors• Buildings
- 4. • Architecture• Bridge, Flyover & Interchanges• Foot over Bridge• Rail over Bridge & Rail under Bridge• Highway, Expressway & Village Roads• Traffic& TransportationServices/Studies• Planning and feasibility studies• Strategic option studies• Geotechnical, Hydrological & Other Investigation• Design, Project Preparation & Cost Estimation
- 5. TABLE OF CONTENTS INTRODUCTION REFERENCE BOOKS & IS CODES DESCRIPTION OF THE STRUCTURE AND STRUCTURAL SYSTEM DESIGN DATA ALLOWABLE DEFLECTIONS DESIGN PHILOSOPHY ANALYSIS, MODEL AND SOFTWARE USED LOAD CONSIDERATION LOAD CALCULATION SEISMIC DESIGN CRITERIA DESIGN & DETAILING OF RCC STRUCTURE LOAD COMBINATIONS FOR CONCRETE DESIGN OF STRUCTURAL ELEMENTS NET SAFE BEARING CAPACITY GUIDELINE NOTES DRAWING INTERPRETATION ANNEXURE-I (STAAD MODEL) DESIGN OF STAIR CASE SPANNING LONGITUDINALLY
- 6. 1. INTRODUCTIONBased on the Architectural plans, section & elevation received fromDUSIB DD-IV, R.P. Bagh, Delhi the proposed building is a dispensarylocated GaliZamirWali, NawabGanj,Delhi. Topography of site as per siteplan is even and the natural ground level of site isconstant. In this briefreport we are presenting the data and assumptions related to theproject, which has lead to the design at final stage.2. REFERENCE BOOKS & IS CODESIS 875 Code of practice for design loads for buildings and structuresPart I Dead LoadsPart II Imposed LoadsPart III Wind LoadsPart V Special Loads and CombinationsIS 1893:2002 Criteria forearthquake resistance design of structures IS 4326:1993 Code ofpractice for earthquake resistant design and construction of buildings IS13920:1993 Code of practice for ductile detailing of reinforcedconcretestructures subjected to seismic forces SP 22 Explanatoryhandbook on codes for earthquake engineering, IS 1893 & IS 4326 IS456:2000 Plain and reinforced concrete - Code of practice SP 16 Designaids for reinforced concrete to IS 456 SP 24 Explanatory handbook onIndianStandard Code for plain and reinforced concrete , IS 456SP 34Handbook on concrete reinforcement and detailing IS 2502 Code ofpractice for bending and fixing of bars for concrete reinforcement IS1786 Specification for high strength deformed steel bars and wiresforconcrete reinforcement IS 269 Specification for 33 grade ordinary
- 7. Portland cement IS 8112 Specification for 43 grade ordinary Portlandcement IS 12269 Specification for 53 grade ordinary Portland cement IS1489 (Part 1) Portland-Pozzolona Cement -- Specification IS 383Specification for coarse and fine aggregates from natural sources forconcreteIS 9103 Specification for admixtures for concrete IS 10262Recommended guidelines for concrete mix design IS 1904 Code ofpractice for design and construction of foundations on soilsIS:800:1984Code of practice for general construction in steel 43.DESCRIPTION OF THE STRUCTURE AND STRUCTURAL SYSTEMThe project consists of G+2 storey residential building. The typicalblocks have 3 flats at each floor and common service core containinglifts, staircase and lobby. Tower framing system shall be column, beam& slab to resist both vertical & lateral loads.4. DESIGN DATA CONCRETECompressive strength of concrete, fck= 25 N/mm2(For foundation, beam & slab)fck= 25 N/mm2(For Column)Concrete density = 25kN/m3 Concrete cover to the rebar are as followsa) foundation = 50mmb) columns = 40mmc) beams = 25mmd) Slabs = 20mmModulus of Elasticity of Concrete, Ec = 5000√fckConcrete Poissons ratio = 0.20REINFORCEMENT
- 8. Reinforced steel yield strength, fy = 500N/mm2Modulus of elasticity ofsteel, Es = 2.05X108kN/mm25. ALLOWABLE DEFLECTIONSa) The final deflection due to dead loads and live loads (unfactored)measured fromas cast levels of supports is not more than Span/250.b) The deflection after erection of partitions and the application offinishes is not morethan span/350 or 20 mm, whichever is the lesser Lateral Frame Deflection (StoryDrift) Under Seismic Load:Story Drift under nominal seismic loads is not more than 0.004h, whereh is the story Height. Maximum value of story drift will be given afteranalysis.6. DESIGN PHILOSOPHYa) Building has been analyzed for conventional loads, Structuralmembers/ componentincluding foundation, RCC slab, beams andcolumns are designed for the dead, live & seismic loads. The beams andcolumns frame arrangement and design has been done by using STAADPRO version V8i.b) All the RCC columns of the building are supported on Raftfoundation. Foundation are typically designed for the reaction obtainedfrom predominant load case, byanalyzing on STAAD PROc) Serviceability & strength checks of foundation & members arecarried out as per IS 456: 2000 57. ANALYSIS, MODEL AND SOFTWARE USEDi) Super Structure: - The building has been analysed as a 3-dimensionalskeletal structure of beam column frame structure using STAAD PROversion V8i software.ii) Sub Structure: -STAAD PRO V8i adopted for the analysis & design offoundation.
- 9. 8. LOAD CONSIDERATIONDead Loads includes self weight of structure is taken as per IS 875 (Part-1) - 1987 Imposed Loads is taken as per IS 875 (Part-2) - 1987Earthquake loads are calculatedas per IS 1893 (Part 1) : 2002 Loadcombinations shall be taken as per IS 1893 (2002) & IS 875 (Part-5) -19879. LOAD CALCULATION9.1 Dead Loada) Self Weight = Automatically calculated by softwareb) Brick wall loadi) 230mm Thk. Wall = 5kN/m Run/m heightFloor to floor height = 3.30m(Net Height) = 3.00-0.45 = 2.85mWeight of Wall = 2.85 x 5.0 = 14.25 kN/mii) 115mm Thk. Wall = 2.75kN/m Run/m heightFloor to floor height = 3.30m(Net Height) = 3.00-0.45 = 2.85mWeight of Wall = 2.85 x 2.75 = 7.838 kN/mSay 7.85kN/miii) Parapet Wall 230mm Thk. (1.0m High)Weight of Wall = 1.0 x 5.0 = 5 kN/mc) Floor Loadi) Typical FloorSelf Weight of Slab = 0.125 x 25 = 3.125kN/sqm(This will vary for different slab thickness)Floor Finish = 0.05 x 24 = 1.2kN/sqmCeiling Plaster = 0.006 x 20 = 0.12kN/sqm
- 10. Total Dead Load = 4.445kN/sqmSay = 4.50kN/sqm6ii) ToiletsSelf Weight of Slab = 0.125 x 25 = 3.125kN/sqmFloor Finish = 0.05 x 24 = 1.2kN/sqmCeiling Plaster = 0.006 x 20 = 0.12kN/sqmSunken = 0.5 x 20 = 10.0kN/sqmPartition = 1.0kN/sqmTotal Dead Load = 12.82kN/sqmiii) KitchenSelf Weight of Slab = 0.125 x 25 = 3.125kN/sqmFloor Finish = 0.05 x 24 = 1.2kN/sqmCeiling Plaster = 0.006 x 20 = 0.12kN/sqmSunken = 0.15 x 20 = 3.0kN/sqmTotal Dead Load = 7.445kN/sqmSay = 7.5kN/sqmiv) TerraceLvl.Self Weight of Slab = 0.125 x 25 = 3.125kN/sqm(This will vary for different slab thickness)Water proofing/Brick Coba = 0. 2 x 20 = 4.0kN/sqmCeiling Plaster = 0.006 x 20 = 0.12kN/sqmTotal Dead Load = 7.245kN/sqmSay = 7.50kN/sqm9.2 Imposed Loada) All rooms and Kitchen = 2kN/sqmb) Toilet and Bath Rooms = 2kN/sqmc) Hall, Corridors, passages, lobbies, staircases
- 11. including fire escapes and store rooms = 4kN/sqmd) Balconies = 3kN/sqm10. SEISMIC DESIGN CRITERIASeismic loads are calculated as per provisions of IS: 1893-2002. Theparameters selected are given below Fundamental natural time periodis taken as Ta = 0.075h0.75as per clause 7.6.1 of IS: 1893-2002, forR.C.C Frame Building. h = Height of building in meter. Parameter ValueZ i.e. Zone Factor 0.24 (For zone IV)I i.e. Importance Factor 1.5R i.e. Response Reduction Factor5 h i.e. Height of Building As/arch.dwg.Length & width of Building As/arch.dwg.Soil Type Medium 7 Response Spectrum reduction factor is taken as5.0 from table 7 of IS: 1893-2002 For special Reinforced CementConcrete Frames (Moment resisting frames specially detailed toprovide ductile behavior). The Time period of the structure has alsobeen worked out using software. The building has been designed forbase shear based on codal time periodin accordance with clause7.8.2 ofIS: 1893-2002 using modification factor = VB/VBwhereVBis calculatedbased on codal time period Ta = 0.075h0.75 and VBis calculated basedon time period given by software. The horizontal earthquake force hasbeen calculated for the full dead load & Reduce liveload as per clause7.3.1 Table-8 of IS:1893-2002.11. DESIGN & DETAILING OF RCC STRUCTUREThe design of RCC Beam & Slab is being done using IS: 456-2000 and SP-16. Limit state method of structure design is being followed. Columnsand beams are being designed using STAAD PRO version V8i software.
- 12. 12. LOAD COMBINATIONS FOR CONCRETE DESIGN OF STRUCTURALELEMENTSThe limit state load combinations used for design of concrete structuralelements such as beams & columns are as per IS:875 Part 5 and IS:456.They are listed below. Various load combinations considered are asfollows:-1. 1.5 (D.L+ Reduced L.L) as per Fig. 1 of IS: 875 – 1987 (Part-2)2. 1.5 (D.L E.Q in Xdirection) -3. 1.5 (D.L E.Q in -direction) Z4. 1.2 (D.L + K1L.L E.Q in Xdirection) -5. 1.2 (D.L + K1L.L E.Q in -direction) Z6. 0.9 (D.L) + 1.5 E.Q. in X-direction7. 0.9 (D.L) + 1.5 E.Q. in Z-directionD.L =Dead loadsL.L = Live loadsE.Q= Earthquake loadsK1= 0.25 For live load class upto 300Kg/m2, 0.5 For live load class above300Kg/m2However unfactored loads are used for size& pressure calculations offoundation.13. NET SAFE BEARING CAPACITYGeotechnical reportFoundation design shall be based on thegeotechnical investigation report. The net safe bearing capacity of soilis 13t/sqm at 3.0m depth from N.G.L.14. GUIDELINE NOTES
- 13. Guideline Notes for Concrete Work are available in General DetailDrawings and Notesof Swati Structure Solution Pvt. Ltd. and shall besupplied along with working drawings. Reinforcing steelspecificationReinforcing steel to be used in this project is Fe500 gradeT.M.T. bars corresponding to 0.2% proof stress The reinforcing steelshould have a minimum elongation of 14.5%. Details and notes onreinforcement are available in General Detail Drawings and Notes ofSwati structure solution pvt.ltd. The following are included in the notes:1. Notes on reinforcement2. Development length and lap length of reinforcement based on gradeof steeland grade of concrete3. Cover to reinforcement4. Details of bends and hooks etc.15. DRAWING INTERPRETATIONAbbreviations, definitions, symbols and notationsAbbreviations,definitions, symbols and notations used in the structural drawings areobtained in the General Detail Drawings and Notes of Swati Structuresolution pvt.ltd Typical details Typical details of various elements canbe obtained in the General Detail Drawings and Notes of Swatistructure solution pvt.ltd. In cases where specific details are notincluded in the structural drawings, reference shall be made to thesedetails by the contractor. No construction work shall proceed on sitewithout studying these General Detail Drawings and Notes
- 14. ANNEXURE-I (STAAD MODEL)
- 15. DESIGN OF STAIR CASE SPANNING LONGITUDINALLY

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