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AWS Roughness Gauge - welding tabs[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaint(--nospam--at)seaint.org
- Subject: AWS Roughness Gauge - welding tabs
- From: "Ron O. Hamburger" <ROH(--nospam--at)eqe.com>
- Date: Thu, 16 Nov 2000 08:12:05 -0800
On 11/15 Ben Faircloth wrote: ++++++++++++++++++++++++++++++ The new FEMA 353 Document requires that weld run-off tabs be removed(from outboard of a beam flange for instance), and that the surface be finished to 500 micro inches. AWS D1.1 requires that these surface types meet their "SAMPLE 3" finish where; Sample 4 = smoothest Sample 1 = roughest The steel fabricator has sent to my attention a "widget" from AWS that shows examples of each roughness (SAMPLE 1-4). The steel fabricator has told me that they are finishing all of the surfaces from which weld run-off tabs have been removed to "SAMPLE 3". Can anyone help me bridge the gap between "SAMPLE 3" and 500 micro inches? I expect that at some level "SAMPLE 3" has to be objectively defined(500 micro inches or something along those lines). +++++++++++++++++++++++++++++++ As noted in Section 5.1.3 of FEMA 353 - Sample 3 is the appropriate gauge for 500 micro inches. If it meets sample 3, roughness is less than 500 microinches.
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