Correct installation and on-site checking

 

High-strength structural bolts can be either snug tightened or fully tensioned. Procedures for both these methods of installation are specified in NZS 3404 (Clauses 15.2.3 to 15.2.5) and it is important that these procedures are followed. It is equally important that the required level of bolt tensioning is specified for each application.

Inspection of bolted connections on site is in accordance with the Steel Structures Standard (NZS 3404). On-site inspection is typically the task of the construction reviewer.

This information is published by the Ministry of Business, Innovation and Employment’s Chief Executive. It is a general guide only and, if used, does not relieve any person of the obligation to consider any matter to which the information relates according to the circumstances of the particular case. Expert advice may be required in specific circumstances. Where this information relates to assisting people: