Comparison of C- Section and H -Section Pre-Engineering Aircraft Hangar

Abstract

The advent of the Pre-Engineered Building concept in recent years has aided in design optimization. Long span, column-free buildings are critical in any sort of engineering construction, and Pre-Engineered Building meet this criterion while optimization of money& time over traditional structures. This approach is adaptable not only because of its high-quality predesigned and prefabrication, but also because of its light weight and cost-effective construction. In this study, a 60m clear span aircraft hangar is developed using STAAD.Pro and compared to a C- Section and H- section PEB.

Introduction

I. INTRODUCTION

In practically every corner of the world, the steel sector is one of the fastest expanding industries. As the world's second fastest expanding economy, India's construction sectors account for a significant portion of its growth. Steel is hundred percent eco-friendly and the majority recycled items, making it not only cost-effective but also extremely environmentally friendly. As a result, each tone of recycled steel saves around 1,000 pounds of coal and 2,500 pounds of iron ore. Steel members are also characterized by strong tensile strength and ductility. When concrete is not practical or construction time is important, steel is commonly employed in the construction of industrial buildings with wider spans.

A pre-engineered building (PEB) is a structure designed by a manufacturer to be manufactured using a pre-determined inventory of raw materials and manufacturing techniques to fulfill a variety of structural and aesthetic design standards at a reasonable cost. In some industrial locations, these structures are referred to as Pre-engineered Metal Buildings.

A hangar is a closed structure to hold aircraft or spacecraft in protective storage. Hangars are used for protection from weather, protection from direct sunlight, maintenance, repair, manufacture, assembly and storage of aircraft on airfields, aircraft carriers and ships. Hangars need special structures to be built. The width of the doors is too large and spans from 30 meters to 120 meters, thus enables the aircraft entrance. The bigger the aircraft are to be introduced; the more complex structure is needed. Hence Pre-Engineered buildings are specially designed and engineered to fit together to satisfy the unique requirements of specific end-uses

Advantages of pre-engineered buildings over conventionally designed buildings. Cost of construction is less as compare to truss placed along width of span & this gives new method of truss placing in roofing system. The result shows that these structures are energy efficient and flexible in design.

Pre-engineered-structures are energy efficient, energy efficient and flexible in design. Cost of construction is less as compare to truss placed along width of span &this gives new method of truss placing in roofing system. Conventional steel-structure is 30% heavier than pre-Engineered-Structure and size of foundation is reduced.

II. METHODOLOGY

The current research is being used in the design of an aircraft hangar at Prayagraj, Uttar Pradesh. The construction will be a Pre-Engineered Building with a width of 60 meters, ten bays of 8.48 meters each, and an eave height of 22 meters. A PEB frame with a width of 22 meters is used in this work, and the design is carried out with wind load as the critical load for the structure. The designs are made in compliance with Indian Standards and with the use of structural analysis and software design.

The complete structure configuration details are given below:

1. Type of Structure: Aircraft Hangar
2. Location: PRAYAGRAJ
3. Length: 63m
4. Width: Primary Building - 60m (Clear span)
5. Secondary Building - 6m
6. Total Building - 72m
7. Eave height: 23.15m
8. Ridge angle: PEB - 1in10
9. Bay spacing: PEB – 6m

III. MATERIAL

The material used to create the PEB structure has a yield strength of 350 Mpa, a density of 7850 kg/m3, and a Young's modulus (E) of 2.0 x 1011 N/m2

IV. LOAD CALCULATION

A. Dead load

Dead load consists of the structure's own weight as well as the weights of the roof, the steel sheets, the purlins, the sag rods, the bracing, and other accessories.

Conclusion

1) As bay spacing is increased and ridge angle is reduced, the consumption of steel lowers. 2) Hollow sections are used in PEB replacing bracings, tie members made of angle and channel sections saved 20.3% of steel used 3) A ridge angle of 1 in 20 demonstrated less use of steel for a clear span of 60 m with bay spacing of 8.57 m. 4) Regarding BM, reactions, and the use of steel, the 1 in 10 ridge angles was very successful and efficient. 5) For a constant frame depth if there is 11.1%, 25% and 42.83% increase in bay spacing there was about 10.27%, 19.78% and 44.62% increase in lateral deflection.

References

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Copyright

Copyright © 2022 Ashutosh Kumar, Prince Yadav. 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.