I have purchased a machine hall that was dismantled several years ago. The construction consists of trusses made from square tubes (100x50x4) for a truss solution with a 16m span. The length of the building is 45m, and the trusses are placed at 2500mm cc (19 trusses).
The problem is that when the hall was dismantled, the legs were cut from the truss itself, and these legs are now missing. The end of the truss looks to be 100x50x4 that has been cut, but on a sketch made during dismantling, it states that the legs are 80x80.
Is there anyone who can assist with a small calculation on which dimension would be best? Of course, I see a problem with welding an 80x80 to a 100x50 end-to-end, but there are solutions like cutting and overlapping them to get a longer and more stable weld joint. If using 80x80, what thickness might be needed? 3, 4, or 5mm? Is it sufficient to use 100x50x4?
Between the columns and trusses, wooden battens are anchored with bolts to welded "ears". 45x95 on the wall and 45x120 on the roof. On top of that is regular trapezoidal sheet metal.
Snow load zone 2.5
Wall height about 4.5m
