WoodWorks Sizer uses the following assumptions when designing columns in concept mode
Columns and walls are pinned at both ends.
Walls are prevented from buckling about the weak axis by wall sheathing.
Walls are designed based on the highest stud load along the wall length.
Wall reactions are based on the maximum stud reaction converted to a UDL that applies along the complete wall length (this leads to total reactions exceeding applied loads whenever walls are loaded by other than full length UDLs.
