Wind Analysis of Pre Engineered Building

Abstract

With the development of science and technology in the field of structural engineering, it is possible to adopt pre-engineered buildings in both industrial and residential construction sectors. For important buildings it is more suitable to use pre engineered building as these are more safe and take less time in construction in comparison of RCC structures. The main objective of this paper is pre-engineered steel structure will be design and analyzed for wind loads, dead loads, live loads and different load combinations on structure. The pre-engineered construction concept involves pre-engineering and quality construction systems which will help to minimize the cost and time.

Introduction

I. INTRODUCTION

Steel Industry is growing rapidly all around the world. To meet the increasing demand of construction, alternative ways of construction are developing. Advances in technology have greatly improved over the years, contributing tremendously to improving living standards through various new products and services. A pre-engineered building (PEB) is one such revolution. They use a defined stock of raw materials that have been time tested to meet a wide range of structural and architectural design specifications. The majority of steel structures being built are only low-rise buildings, which are generally of one storey only. Industrial buildings, a subset of low-rise buildings are normally used for steel plants, automobile industries, light, utility and process industries, thermal power stations, warehouses, assembly plants, storage, garages, small scale industries, showrooms, offices etc. The application of pre-engineered building concepts to low rise buildings is very economical due to its light weight and economical construction. PEB systems are extensively used in industrial and much other non-residential construction world-wide. These buildings were pre-designed or 'pre-engineered' into standard sizes, spans, bays and heights, and use standard details for fixing cladding, roofing, gutters, flashing, windows, doors etc. taking advantage of industrial practices of mass production of components economically.

II. PRE ENGINNERED BUILDING

In structural engineering, a pre-engineered building (PEB) is designed by a manufacturer to  fabricated using a pre-determined inventory of raw materials and manufacturing methods that can efficiently satisfy a wide range of structural and aesthetic design requirements. Pre-engineering building primary frame structure is an assembly of I-shaped structural members. The I-shaped beams are usually formed in the factory by welding steel plates together to form the I-sections. The I-section beams are then assembled on site with bolted connections to form the entire frame of the pre-engineered building. Tapered sections are also used to achieve varying depth. The concept of PEB is the frame geometry which matches the shape of the internal stress (bending moment) diagram thus optimizing material usage and reducing the total weight of the structure. The use of steel structures is not only economical but also eco-friendly at the time when there is a threat of global warming. Here, “economical” word is stated considering time and cost. Time being the most important aspect, steel structures (Pre- fabricated) is built in very short period and one such example is Pre Engineered Buildings (PEB). Pre-engineered building are steel building wherein the framing members and other components are fully fabricated in the factory after designing and brought to the site for assembly, mainly by nut-bolts, thereby resulting into a steel structure of high quality and precision. Steel is an expensive material as compared to the rest but when it comes to the cost-savings during the life span of the structure, steel proves to be a very affordable material . Steel can also be made rust proof by the application of special coated paints. Apart from that, steel is an insect and termite resistant material and the maintenance cost is lower during its life span as compared to other materials. PEB are generally low rise buildings however the maximum eave height can go up to 30 metres, Clear span upto 90 meter wide are possible.

III. LOAD CALCULATION

Pre Engineered Building mainly design for dead load, live load, wind load. The load calculation for all three major loads is as follows:

Conclusion

This study explains the behavior of modeled pre engineered building when subjected to dead load, live load and wind load, How wind acts on different members of building. There are two types of wind pressure act on the building internal pressure and external pressure, they are subdivided as WLIP (wind load internal pressure) and WLIS (wind load suction pressure) these two pressure act at different wind angle 00, 450, 900, 1350 and 1800. There is one more most important load factor that is seismic load which can be considered as future scope of this work.

References

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Copyright

Copyright © 2022 Umang Jain, Dr. J. N. Vyas. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.