Description
A typical steel base plate detail for a 200 SHS (square hollow section) post fixed to a concrete footing, drawn at 1:10 with two plan-view bolt options and a full section. The detail specifies a 16mm base plate with Ø26 holes and 5mm plate washers, four holding-down bolts on an overlength threaded rod (trimmed to two turns above the nut after the column is set), and a U-shaped rod cage tapped M20 at the top and tack-welded to form the holding-down assembly cast into the concrete.
The note that the 150 and 100 SHS sizes are detailed similarly makes it a reusable standard for light SHS posts – verandah, carport, pergola and framing columns. Insert it into your structural drawings and adjust the plate size, bolt gauge and embedment to suit your engineer’s design.
See also the 310UB40 base plate and the fly brace detail in the structural details and steel categories. A free AutoCAD DWG download.
