There are no columns in the middle of the workshop of 37 meters span. How much I-beam do I need?
It's OK to use 60 angles or channel steel as a truss.I-beam is mainly divided into ordinary I-beam, light I-beam and H steel three.Ordinary I-beam, light I-beam flange is variable cross-section, depending on the thickness of the web, the external thin; H steel: HW, HM, HN, HEA, HEB, HEM and so on, the flange of I-beam is a uniform section
Ordinary I-beam, lightweight I-beam has formed the national standard, the common 10# I-beam is equivalent to the Internet I100 (such as 10# also channel equivalent channel (U100) for the implementation of the standards of different countries, which have subtle differences in their specifications)
H type I-beam is also called wide flange I-beam, HW, HM, HN originated from European standards, HEB is the German standard of I-beam, of which HW, HN I-beam has been widely used in our country and production. HEA HEB HEM will be seen on many German designs and is hard to buy on the domestic market. In the domestic steel structure engineering, if the quantity is few, then may use the specification steel plate to carry on the welding splicing. In the case of large quantities, it is usually considered to use mechanical properties comparable to those of HW and HN steel.
