The minimum permitted height for a braced pile is three times the distance from the lower brace connection to the cleared ground level (CGL) to ensure there is sufficient slope on the brace to make it effective. If the bolt that attaches the lower end of the brace is at the minimum distance permitted by NZS 3604:2011 Timber-framed buildings of 200 mm, the minimum pile height permitted is 600 mm measured from CGL to the underside of the bearer. If the connection to the lower end of the brace is at the maximum permitted height above CGL of 300 mm, the minimum height for the pile is 900 mm from CGL to the underside of the bearer.
Minimum heights for braced piles
21 March 2014
Published in building.