International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 04 Issue: 07 | July -2017
p-ISSN: 2395-0072
www.irjet.net
Comparative Study on the Economy between Pre-Engineered and Conventional Steel Buildings Shashank Pattanshetti1, Prof. Sachin M. Kulkarni2 1P
G Student, Construction Technology, Jain College of Engineering, Belagavi, Karnataka, India Professor, Department of Civil Engineering, Jain College of Engineering, Belagavi, Karnataka, India ---------------------------------------------------------------------***--------------------------------------------------------------------2Assistant
Abstract - For the past few decades, pre- engineered
buildings have become popular in the construction industry. Pre- engineered structure is an idea designed with a view to replace conventional steel structures as the structural components are manufactured under controlled environment conditions tend to produce products with high quality & precision, reduce resource wastages and decrease the budget considerably. The paper presents a comparative study conducted between conventional steel structure and preengineered structure discussing the economy of the structures in terms of structural weight and material optimization. To conduct the study a 3D model of a conventional steel structure and pre- engineered building is deigned and analysed on STAAD. Pro, a structural designing software.
in form of mild steel sections of various shapes for framed structures. Framed structures are designed using structural steel due to its ease of constructability and high strength to weight ratio. The advantages of steel construction are: 1. 2. 3. 4.
To provides high quality, strong, durable and stable structures. It has a high fire resistant property and is environmentally friendly material. Construction with steel material is fast compared to other materials. The steel components can be recovered, recycled and reused effectively.
Key Words: Conventional steel structure, Pre- Engineered Buildings, Economy, STAAD Pro.
Structural steel has been adopted to construct two types of framed structures:
1. INTRODUCTION
1.1.1 Conventional Steel Structure
The construction industry is growing immensely large by the day. A lot of investment is poured for the development of a country to improve the standard of living. The economy is on the rise and the need for buildings, infrastructures, machines, etc. is in great demand by the population. To keep up with the progress and development, the resources should be available and maintained at all times. Industrial sector is fast growing and the demand to house, store and export materials is on the rise. Temporary sheds or structures which can be erected and maintained within minimum cost and time, moved to different locations and provide a salvage value after its life span are mainly adopted for construction. Structures designed by steel have proved to be the best material to satisfy the criteria for temporary structures.
Structures fabricated by mild steel sections with varying cross sections are known as conventional steel structures. The type of steel sections proposed for construction varies as per the design standards and specifications. Conventional steels structures with or without concrete columns have been designed for industrial operational buildings, storage units, warehouses, etc. These steel sections are produced in lengths of 6m of various cross sections and transported to site, where they are fabricated as per needs and assembled. The sections fabricated are connected by bolts or welding processes. The level of material wastages for such methods is high and degree of precision & work quality achieved is low for such structures.
1.1 Structural Steel Steel is a material resource produced from the ores extracted from the earth’s crust. Steel and its forms have become one of the primary material required in various fields of engineering and its demand is increasing by the day. Steel is the next material after concrete to be of great demand in the construction industry and hence the steel industry is the largest growing sector in the world. In the construction industry it is used as a primary construction material in form of HYSD bars of various diameters in concrete structures and Š 2017, IRJET
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1.1.2 Pre-Engineering Building Pre- engineered buildings are the new steel structures being designed and adopted to replace conventional steel structures. The pre- engineered components are manufactured according to design specifications and standards under controlled environment due to which high quality product with precision are achieved and are later transported and assembled at site. Pre- engineered buildings are adopted for long span structures, they are economical, provide flexibility for future expansion, require low
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