Roof lighting belt bracket can be welded on the roof purlins on it
Roof lighting belt bracket can not be welded on the roof purlin. Do not need to standardize the checking of bearing capacity of purlin as long as knew not.
Roof lighting belt bracket can not be welded on the roof purlin. Do not need to standardize the checking of bearing capacity of purlin as long as knew not.
By building roof lighting louver rack structure, roof rack is supported on the roof beam. Purlin section stiffness is too small, the thickness of 1.5~2.5mm, can withstand roof material load, can not withstand the skylight. Moreover, the steel structure is not allowed to be welded on the rod in place!
