BU617 Subfloor and roof bracing in NZS 3604:2011 buildings (2017)

Wind and earthquakes can generate significant forces on a building. Bracing demand must be calculated and sufficient bracing incorporated into a building so that the structure can withstand these forces.

This bulletin describes the bracing for subfloors and roofs of buildings within the scope of NZS 3604:2011 Timber-framed buildings.

This bulletin covers: 

• general considerations
• subfloor bracing
• roof bracing 
• bracing ratings for renovations or repairs.