To: seaint(--nospam--at)seaint.org, aec-residential(--nospam--at)polhemus.cc
Subject: QUERY: Wind Load Effects For Small Building Set-Back (ASCE 7-98)
From: Bill Polhemus <bpolhem(--nospam--at)swbell.net>
Date: Mon, 15 Jan 2001 18:50:08 -0600
Here's another question to file under the "Gee I Should Know This But..."
When you have a small building setback breaking up the line a long, otherwise
continuous wall in a small building, how do you safely account for the effects
that always arise when you have a discontinuity?
Up until now, this situation has invariably come up such that I felt justified
in putting a "drag strut" at that point, and calling it a shear-resistant point
in the structure.
But I have one now that just won't let me justify that expense (as well as the
The "jog" is only a few feet, less than 10% of the smaller building depth
(perpendicular to the wall line under consideration).
I am tempted to just calculate the diaphragm shear due to wind there, and check
to make sure the diaphragm has no problem (I'm sure it won't). But I need some
hand-holding. Is there something I'm failing to take into consideration?
Thanks in advance.