International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 07 | July 2022
p-ISSN: 2395-0072
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To Analyze and Comparing a G+12 story RCC building using IS-875 (part 3)-2015 and ASCE-07 for basic wind speed of 50m/s using STADD PRO software Sneha M. Pimpalkar1, Prof. Kirti Padmawar2 1M.
tech Student, Structural and construction Engineering Department, Ballarpur Institute of Technology, Maharashtra, India 2Assitant Professor, Structural and construction Engineering Department, Ballarpur Institute of Technology, Maharashtra, India ---------------------------------------------------------------------***--------------------------------------------------------------------For design of high rise structures wind load is a critical Abstract - Buildings are constructed for commercial and for
parameter especially for taller buildings constructed in nonseismic area. For the analysis of wind load most of the countries have developed its own standards and related specification for effective analysis and design of structures. Wind effect on the structure can be classified as “static” and “dynamic”. Static effect primarily causes elastic bending and twisting of structure. In this research the structure is analyzed by static method.
residential uses. Buildings provide shelter for people. Due to rapid growth in population and higher rate of growths in industries there is a large demand for land and construction. In design practices, randomly varying phenomenon is a wind which is having significant dynamic effect on structures especially on flexible high rise building. The main objective of this project is to compare Indian Standard code i.e. IS-875 (part 3) 2015 and American standard code (ASCE-7) for basic wind speed and static loading on G+12 storey building using STAAD-Pro software. Analysis will be performed on building to identify the lateral force, intensity, storey drift, displacement, wind load, dead load, and combination of wind load and comparison of results which is obtained from software after assigning data. The main aim of this research is to understand provision of international standards (ASCE-7) and compare it with Indian standard.
1.1 Terminologies used In Wind Load Analysis
Words: Structural analysis, Intensity, Displacement, Reactions, High rise buildings, Basic Wind Speed, Story drift, Shear force, B.M, IS-875 ( part-3) 2015, ASCE-07
Basic wind speed (Vb): it is applicable to 10 m height above mean ground level for different zones of the country. As per ASCE code there is 4 wind zones in America. there are 4 zone for which the basic wind speeds are 47, 56, 65, 76 (m/s) and As per IS code there is 6 wind zones in India (55m/s, 50m/s, 47m/s, 44m/s, 39m/s, 33m/s).
Terrain Category: it means the characteristics of the surface irregularities of an area which arise from natural or constructed features. it is used for determining a structures exposures to wind as a result of terrain that surrounds it.
Story drift: It is the lateral displacement of a floor relative to the floor below and the storey drift ratio is the storey drift divided by the storey height. STAADPro computes the storey drift by calculating the average displacement of all the nodes at that level.
Exposure category: It is used for determining a structure exposures to wind as a result of terrain that surrounds it. ASCE 7 defies three exposure categories (B,C,D). exposure B is defined as “urban and suburban areas, wooded areas, or other terrain with numerous, closely spaced obstruction.
Key
1. INTRODUCTION In general, wind is considered for design of high rise building, when a building comes in contact with wind both positive and negative pressure will occurs simultaneously. The building must have sufficient strength to resist pressure to prevent wind induced building failure. The wind effect is depend on geographic location and obstruction near the structure; much variation causes due to air flow and also characteristics of building itself like it self-weight. Codal provision is one of the basic and important aspects for an designing purpose, especially for the tall building. Different codes and Standard are affecting design parameter which leads its effect on the specification and cost of building. The structural designing of foreign countries are always remarkable and it is observed that they mostly follow ASCE standards for variety of structures. So comparison of such codes is very much important from point of facilitating good construction practices in developing countries like India.
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