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.