To: "Se-Practice List (E-mail)" <se-practice(--nospam--at)polhemus.cc>, "Seaint list (E-mail)" <seaint(--nospam--at)seaint.org>, "IBC list (E-mail)" <IBC_IRC(--nospam--at)listbot.com>, "Aec-Residential List (E-mail)" <aec-residential(--nospam--at)polhemus.cc>, "Jim Mattison (E-mail)" <jmattison(--nospam--at)strongtie.com>
Subject: schoo l- roof snow 125 psf - top hung joist hangers over two laye rs existing gypsum wall board
From: "Haan, Scott M." <HaanSM(--nospam--at)ci.anchorage.ak.us>
Date: Fri, 9 Mar 2001 07:54:03 -0900
I am a plan checker looking at plans for a school alteration. The roof snow
load is 125 psf at the particular location. The plans have a detail where
new roof wood joists are being hung off an existing wall with Simpson top
hung joist hangers butted against 2 layers of existing gypsum wall board.
The engineer says there is an existing similar condition at the school that
is doing fine. I told the architect just because it was done wrong before
does not mean I am going to issue a permit for an incorrect new application.
The reason they are getting the permit is the roof collapsed in a different
portion of the building.
Does Simpson have any guidelines on this type of application? Has anyone
had problems with this type of application?
Scott M Haan P.E.
Plan Review Engineer
Building Safety Division http://muni.org/building,
Development Services Department,
Municipality of Anchorage
phone: 907-343-8183 fax: 907-249-7399