Inspection of Snug-Tight Bolts
Inspection of Snug-Tight Bolts
(OP)
For bolted steel connections in which the only requirement is for the bolts to be snug-tightened (i.e. no pretension requirement), how does an inspector typically determine whether or not the bolt is properly snug-tightened?






RE: Inspection of Snug-Tight Bolts
RE: Inspection of Snug-Tight Bolts
http://www.FerrellEngineering.com
RE: Inspection of Snug-Tight Bolts
Is this why a lot of engineers call for pretensioned requirements like tension control "twist off" bolts? It is easy to verify that the snug-tightened requirements (and then some) have been met.
RE: Inspection of Snug-Tight Bolts
Reserve the specification of pretensioned bolts for slip critical connections. This should only be necessary for certain loading conditions or additional erection tolerance.
http://www.FerrellEngineering.com
RE: Inspection of Snug-Tight Bolts
As well as the cost issue, providing pretensioned bolts can make a very big difference on how a connection behaves. Fin plates can start transferring moments, welds that were designed to be lightly loaded can become more highly loaded, there is less allowance for shrinkage or equalising of bolt shears through shear ploughing e.t.c. e.t.c.