... life time If you need: Opinions 1)steel building, 2)metal building, 3) modular house, 4)steel structure warehouse, 5)workshop, 6) garage, ... , muti slope; Sing span; double-span, Multi-span, single floor, double floors! 3) Different Bases: Cement and steel foundation bolts4) Different Columns ... 5) Doors and windows 6)Crane (if have) ,Crane span, crane lift height, max lift capacity, max wheel pressure ...