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Moment Connection Question
- To: seaint(--nospam--at)seaint.org
- Subject: Moment Connection Question
- From: canitzcf(--nospam--at)aol.com
- Date: Tue, 06 Feb 2007 20:56:06 -0500
The SEOR has required full pen moment connections for a truss bottom chord connection to the supporting columns. The bottom chords are W14x311's while the columns are W14x257's. All steel is A992 Grade 50. The W14x311's top and bottom flanges are full pen welded to the W14x257's flanges using TC-U4a preqaulified weld joints.
After erection of these members, the inspector observed the root opening widths to range from 1/2" to 1 1/16" which of course exceeds the TC-U4a parameters. This issue occurs at eight locations.
As a repair, flange plates added/welded to the W14x311's top/bottom flanges with a full pen weld where the plate edge abuts the column flange were proposed. The SEOR has rejected this fix due to appearance (the steel wiill remain exposed; it's part of a bridge that connects two buildings).
Has anyone encountered this sitaution previously? If so, any suggested repairs (without adding flange plates)? Is the only option to cut a section of the flange and butt weld a new flange piece with a width that provides the correct root opening?