espace wrote:各位大大有事想請教..因為樓房寬8M 中間不想支稱 這樣的話H型鋼應該選用多大的呢.(恕刪)
espace wrote:各位大大有事想請教...(恕刪)
Tsungyuan wrote:以照片這座為例橫梁...(恕刪)