BUILDING USING STAAD PRO

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1 International Journal of Civil Engineering and Technology (IJCIET) Volume 8, Issue 5, May 2017, pp , Article ID: IJCIET_08_05_062 Available online at aeme.com/ijciet/issues.asp?jtype=ijciet&vtyp pe=8&itype=5 ISSN Print: and ISSN Online: IAEME Publication Scopus Indexed ANALYSIS AND DESIGN OF MULTISTOREYED RESIDENTIAL BUILDING USING STAAD PRO Sk.Salmaan, V.Rajkumar, N.Phaniteja Undergraduate, Department of Civil Engineering K L University, A.P. India. P.Poluraju Associate Professor, Department of Civil Engineering, K L University, India. ABSTRACT Structural Analysis is a branch which involves in the determination of behaviour of structures in order to predict the responses of real structures such as buildings, bridges, trusses etc. Under the improvement of expected loading & external environment during the service life of structures. The results of analysis are used to verify the structure fitnesss for use. Computer software s are also being used for the calculation of forces, bending moment, stress, strain & deformation or deflection for a complex structural system. The principle objective of this project is the comparative study on design and analysis of Multi-storey residential building by using STAAD Pro. software. STAAD Pro. is one of the leading software s for the design of structures. In this project we had analysed the residential building for finding the shear forces, bending moments, deflections & reinforcement details for the structural components of building(such as Beams, columns and slabs) to develop the economic design. Finally we will make an attempt to define the economical section of multi- storey residential building using STAAD Pro. software tool. Key Words: Analysis and design, Multi-storey residential building, Staad Pro. Cite this Article: Sk.Salmaan, V.Rajkumar, N.Phaniteja and P.Poluraju Analysis and Design of Multistoreyed Residential Building Using STAAD PRO. International Journal of Civil Engineering and Technology, 8(5), 2017, pp IET/issues.asp?JType=IJCIET&VType=8&ITy ype=5 1. INTRODUCTION The full form of STAAD is STRUCTURAL AIDED ANALYSIS AND DESIGN.IT WAS DEVELOPED by Research Engineers International in Yorba Linda,CA later it was sold to Bentley systems in late STAAD Pro. is an analysis & design software package for structural engineering used in performing the analysis & design of wide variety of types of structures. It allows structural engineers to analyse and design virtually any type of structure through its flexible Modelling environment, advanced features & fluent data collaboration. STAAD Pro. may be utilized for analysing and designing practically all types of structures editor@iaeme.com

2 Analysis and Design of Multistoreyed Residential Building Using STAAD PRO Buildings, Bridges, Towers, Transportation, Industrial and Utility structures. As we are analysing a G+5 residential building here the seismic loads dominates the wind load under the seismic zone IV, as the wind pressures are high for high raised buildings based on different conditions such as weather conditions, buildings in or near coastal areas etc., for most of the buildings seismic fores cause major damage [1].STAAD Pro software is more flexible to work than compared to ETABS [2].The height of steel in edge columns increases in each level, having minimum area of steel in ground level to higher area of steel in top level [3] Calculation of Loads as per Indian Standards There here are difficult types of loads acting on the structure a. Dead loads: - All permanent construction of the structure form the dead loads. The dead loads comprises of the weights of walls, partitions floor finishes, false ceilings, false floors and the other permanent construction in the buildings. The dead loads is calculated from the dimensions of various members and their unit weights. The unit weights of plain concrete and reinforced concrete made sand and gravel or crushed natural stone aggregate may be taken respectively. b. Live loads: -Live load is produced by the intended use or occupancy of a building including the weight of movable partitions, distributed and concentrated loads, load due to impact and vibration and dust loads. Imposed loads do not include loads due to wind, seismic activity, snow, and loads imposed due to temperature changes to which the structure, the differential settlements to which the structure may undergo. c. Wind loads: -wind loads is air in the motion relative to the surface of the earth. The primary cause of wind is traced to earth s rotation and differences in the terrestrial radiation. The radiation effects are primarily responsible for the convection either upwards or downwards. The wind generally blows from the horizontal to the ground at high wind speeds. Since vertical components of the atmospheric motion are relatively small, the term wind denotes almost exclusively the horizontal wind, vertical wind are always identified as such. The wind speeds are to be assessed with the aid of anemometers or anemographs which are installed at meteorological observatories at heights generally varying from 10 to 30 meters above ground. d. Seismic loads: -Seismic loads is the basic concept of earthquake engineering. Which means application of earthquake generated agitation to a building structure or its model [5]. It happens at contact surfaces of a structure either with the ground, or with the adjacent structures, or with the gravity waves from tsunami. Seismic loading depends primarily on: Anticipated earthquake parameters at the site, geotechnical parameters of the site, building structure s parameters, characteristics of the anticipated gravity waves from tsunami(if applicable).sometimes, seismic loads exceeds ability of a structure to resist it without being broken, partially or completely. Due to their mutual interaction, seismic loading and seismic performance of a structure are intimately related. e. Combination loads (dead load+live load+wind load) In this project we added the five types of the combination loads as depicted in table 1. Table 1 Load Combinations 1 1.5(DL+EQ) 2 1.2(DL+LL+EQ) 3 0.9(DL)+1.5(EQ) 4 1.2(DL+LL+WL) (DL+LL) editor@iaeme.com

3 Sk.Salmaan, V.Rajkumar, N.Phaniteja and P.Poluraju 2. ANALYSISMULTISTOREYED RESIDENTIAL BUILDING USING STAAD PRO 2.1. Building Data for Analysis The proposed building considered for the project is of residential building. The considered building data is furnished below: Building information:- Number of storeys:g+4, 5 stories. Length of the building in X direction: 17.0m Length of the building in Y direction:16.5m Length of the building in Z direction: 13.0m Inter storey height of the building: 3m(storey height to storey height). 3. DESIGN OF G+4 MULTISTOREYED RESIDENTIAL BUILDING USING STAAD PRO. Step 1:Creation of nodal points. Based on the column positioning of plan we entered the node points into the STAAD file. Step 2: Representation of beams and columns. By using add beam command we had drawn the beams and columns between the corresponding node points. Step 3: 3D view of structure. Here we have used the transitional repeat command in Y direction to get the 3D view of structure. Step 4: Supports and property assigning. After the creation of structure the supports at the base of structure are specified as fixed. Also the materials were specified as fixed. Also the materials were specified and cross section of beams and columns members was assigned. Step 5: 3D rendering view. After assigning the property the 3d rendering view of the structure can be shown. Step 6: Assigning of earthquake loads, earthquake loads are defined as per IS1893 Part 1 based on intensity calculated and damping ratio. Then loads are added in load case details in +X, -X, +Z, -Z directions [8]. Step 7:Assigning of wind loads. Wind loads are defined as per IS 875 Part 3 based on intensitycalculated and exposure factor. Then loads are added in load case details in +X,- X,+Z,-Zdirections editor@iaeme.com

4 Analysis and Design of Multistoreyed Residential Building Using STAAD PRO Step 8: Assigning of dead loads. Dead loads are calculated as per IS 875 Part 1 for external walls, internal walls, parapet wall including self-weight of structure. Step 9: Assigning of live loads. Live loads are assigned for every floor as 4 kn/m 2 based on IS 875 Part 2. Step 10: Adding of load combinations. After assigning all the loads, the load combinations are given with suitable factor of safety as per IS 875 Part 5. Step 11: Analysis after the completion of all the above steps we have performed the analysis and checked for errors. Step 12: Design. Finally concrete design is performed as per IS 456:2000 by defining suitable design commands for different structural components. After the assigning of commands again we performed analysis for any errors. 4. RESULTS AND DISCUSSION THE BELOW VALUES REPRESENT MAXIMUM REACTION DEVELOPED AT DIFFERENT CASES FOR A BEAM The maximum shear forces in Z-direction and Y-direction including the -ve and +ve axis are shown in the below table as taking the load case of 1.2(DL+LL+EQ) which produce higher value of shear as shown in the below Table 2. Table 2 Maximum Reactions Developed at Different Cases for Beam Beam No. Case Fz (kn) Fy(kN) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) editor@iaeme.com

5 Sk.Salmaan, V.Rajkumar, N.Phaniteja and P.Poluraju Figure 1 Maximum Reactions Developed at Different Cases for Beams Table 3 Maximum Reactions Developed at Different Cases for Column Beam No. Case Max. My(kN) Max. Mz (kn) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) (DL+LL+EQ) The above values from Table 3, represents Maximum Reactions Developed at Different Cases for Column The maximum bending moments at Y-direction and Z-direction including -ve and +ve are shown in above table as taking the load case of 1.2(DL+LL+EQ) which produce higher value if bending moment editor@iaeme.com

6 Analysis and Design of Multistoreyed Residential Building Using STAAD PRO Figure 2 Maximum Reactions Developed at Different Cases for Columns 5. CONCLUSION The following conclusions is drawn from Analysis of Multistoryed residential building under General loadings (including Seismic loadings) using STAAD.Pro. 1. It is observed that the shear force is developed on beam no.46 in X-direction i.e. at the foundation part of the residential building and on columnno.556 in Z-direction i.e.at the top back side of the building with respect to their load combinations. 2. Shear force and bending movement as increases for both beams and columns as storey height increases. 3. It is observed that rectangular columns are used in this but circular or square columns are more efficient in earthquake areas IS (part-1). REFERENCE [1] Srivastava, K.A. (2016) Seismic analysis and design of G+5 residential building, International Journal of Latest Trends in Engineering and Technology, Vol. 6, No. 4, pp [2] Ramya, D. and Kumar, A.V.S.S. (2015) Comparative study on design and analysis of multi-storeyed building(g+10) by STAAD Pro. and ETABS software International Journal of Engineering Sciences and Research technology, Vol.4, No. 10, pp [3] Deepmala, P. (2016) Analysis and design of G+5 residential building with seismic load using STAAD Pro. Imperial Journal of Interdisciplinary Research, Vol. 2, No. 8, pp [4] Tejashree, K., Sachin, K., Anjum, A. and Kolhar, M.H. (2016) Analysis and design of high rise building frame using STAAD PRO. International Journal of Research in Engineering and technology, Vol. 5, No. 4, pp [5] Mahesh, S. and Rangarao, B.P. (2014) Comparison of Analysis and Design of Regular and irregular configuration of Multi Story buildings in various seismic zones and various editor@iaeme.com

7 Sk.Salmaan, V.Rajkumar, N.Phaniteja and P.Poluraju types of soils Using ETABS and Staad. Journal of Mechanical and civil engineering, Vol. 11, No. 6, pp [6] Ramaraju, K., Shereef, M.I., Nagesh. R.I. and Gopal, K.S. (2013) Analysis and Design RC Tall Buildings Subjected to Wind and Earthquake Loads. The eighth pacific conference on Wind Engineering,Volume.8, No. 4, pp [7] IS: 875 (Part 1)-1987 Indian Standard Code of Practice for Design Loads (Other than earthquake) for Buildings and Structures. Bureau of Indian Standards, New Delhi, [8] N. Tarun and N. Lokeshwaran, A Case Study on Assessing Energy Efficiency of Existing Residential Building and Recommendations Ensuring Green Efficiency in Building Construction Projects. International Journal of Civil Engineering and Technology, 8(3), 2017, pp [9] B. Srinivasan, Dr. Pa. Ganeswaran and Dr. T. Meenambal, Optimization with Sun Light Source in Old Constructed Building and Converting to Green Building. International Journal of Civil Engineering and Technology, 7(5), 2016, pp [10] IS: 1893 (Part-1)-2002 Criteria for Earthquake Resistant Design of Structures. Bureau of Indian Standards, New Delhi, editor@iaeme.com