... slope, double slope, muti slope; Single span, double span, Multi-span, single floor, double floors! 3) Base:Cement and steel ... ! 5) Bracing: X or V or other type bracing made from angle, round pipe, etc 6) C or z ... : Main steel frame without packing load in 40'OT, roof and wall panel load in 40'HQ! 3. Design Parameters: if ... wheel pressure and min wheel pressure! Steel structure warehouse made in china