AA. Usage pf Circular Hollow Sections (CHS), Rectangular Hollow Sections (RHS) & Square Hollow Sections (SHS) is very common in steel construction industry, for Parking Sheds, canopies, etc. A brochure containing reliable structural information regarding the sizes, dimensions & weights of CHS, RHS & SHS available in Pakistan, can be very useful for local structural engineers dealing with structural steel design. Download link of Such a brochure, listing hollow sections conforming to several ASTM & other standards, is being shared here for the benefit of all those interested.
Regards.