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Re: Welding of Plate Washers

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Mark -

Charles Canitz

-----Original Message-----
From: Mark Johnson <markajohn(--nospam--at)>
To: seaint <seaint(--nospam--at)>
Sent: Mon, Apr 9, 2012 11:48 am
Subject: Re: Welding of Plate Washers

Doesn't seem right.  If your talking about standard hardened washers, I would question the weldability.  Also, welding would defeat the purpose of slotting the holes.  In some cases, shear connections with short slots have more rated capacity because the bolts don't have to resist moment.

For a more definitive answer, check with the ASIC solutions center; 866-275-2472 or on the web.


--- On Mon, 4/9/12, Charles Canitz <canitzcf(--nospam--at)> wrote:

From: Charles Canitz <canitzcf(--nospam--at)>
Subject: Welding of Plate Washers
To: seaint(--nospam--at)
Date: Monday, April 9, 2012, 7:40 AM

I've received the following question from a local structural steel fabricator/erector.
Since they're using short slotted holes for their for most of their beam to column and beam to girder connections, washers are provided over these holes when occuring in the outer ply.
The project SEOR is returning the related shop drawings marked up with a comment requiring that these washers be welded. The reason, I'm assuming, is to insure that the washer remains over the slotted hole while the bolts are tightened.
Has anyone encountered this situation in the past?
Charles Canitz, PE
Annapolis, MD