1. Weld a carbon steel retainer on the structural steel. The nut is
quenched and tempered and should not be welded. A carbon steel retainer is
relatively easy to fabricate and can be welded to the structural steel to
hold the nut in place.
2. Use a direct tension indicating washer to determine when the bolt is
properly tensioned.
Regards,
Harold Sprague
>From: "Michael Laplante" <Michael.Laplante@cima.ca>
>Reply-To: <seaint@seaint.org>
>To: <SEAINT@SEAINT.ORG>
>CC: <jacques.caron@cima.ca>
>Subject: Torquing of bolts by the bolt head
>Date: Thu, 7 Jun 2007 15:48:48 -0400
>
>I am connecting several new steel beams into an existing structure.
>Due to the confined space of some of the connections access to the nuts
>of the bolted connections is limited. Therefore nuts are pre-welded to
>one side of the connection and the bolts are inserted by the other side.
>Question? Can the bolts be torqued or pre-tensioned by turning the head
>of the bolt rather than the nut. A washer is installed on the head side
>of the connection. I don't think there is a difference as long as the
>washer is installed behind the head.
>
>Thanks in advance
>
>Mike
>CIMA + Laval
>Structures- Energie
>W: 514-337-2462
>C: 514-229-5340
>F: 450-682-1013
>
>
>
>
>
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