Advice Centre

External masonry corners need a minimum return length to provide adequate lateral stiffness. Below 665 mm, a structural post may be needed. Here’s the rule and what to do if your corner is tight.

A steel post at a corner window needs to sit under the beam for structural load transfer — but this can conflict with the glazing line. Here are the options for resolving the clash.

The structural specification for flat roof boarding is typically set by the architect, not the structural engineer. Here’s what LABC recommends and how to verify requirements with Building Control.

How joists and rafters connect to steel beams is a construction detail — not a structural engineering item. The builder or architect decides, within broadly accepted practice.

Where rafters don’t overhang the gable wall, a windpost needs to be tied to the floor structure above. Here’s the accepted connection method using mild steel restraint straps and noggins.

Structural plywood sheathing resists racking (lateral wind loads) in timber stud walls. Here’s why it’s needed, how it works, and when single-sided vs double-sided is required.

A wall bordering a neighbour’s property is not always a party wall — and it may still need a wind post. Here’s how to work out which case applies to your project.