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Re: TJI Micro=Lam and Top Flange Hangers

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Hi Dennis,
While I know of no specific restriction placed upon top flange hangers ( not to say they don't exist ),  microlam does have minimum nail spacings into the narrow face of the joist/beam, Per NER-126 you are limited to 8" centers for 16d,  4" centers on 10d, and 3" centers on 8d nails.  This also makes for problems if the beam has straps to the top for collectors and such. 
Robert Shaffer
Santa Cruz,  CA
----- Original Message -----
Sent: Thursday, December 23, 1999 3:45 PM
Subject: TJI Micro=Lam and Top Flange Hangers

I remember reading that you can not nail top flange hangers to the top of a Micro-lam because it can delaminate the material. If I recall correctly, this must be face nailed or the Micro=Lam changed to a Timberstrand product or a Parallam.
Does anyone recall this. I am doing a plan check on a project and need to verify this.
Dennis S. Wish, PE
(208) 361-5447 Efax