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INTRODUCTION :1.Steel is considered as backbone of infrastructure.2.Steel consumption is one of the factors in measuring the development of a nation & in turn all humanity.3.Steel structures can be innovative.4.Steel is flexible & elegant.5.High strength to weight can be achieved.6.Steel is a high facilitator of green building concept.7.Facilitates automated production & erection techniques.8.Reduces on-site duration.9.Value added systems of Pre-Engineered Steel Building are highly useful for efficient use of material,labour,time & money.