Subject: Re: Field Observations - Stupid things I've seen
Date: Tue, 29 Jun 1999 00:39:00 EDT
In a message dated 6/28/99 11:09:32 AM Pacific Daylight Time,
<< Unfortunately, your retrofit doesn't sound like it's code compliant.
From my understanding, you have a shear wall that is constructed out of
structural wood panels that is 2' wide by 9' to 12' high. The maximum
h./d ratio for this type of wall (with blocking installed) is 3.5:1
which results in a maximum of 7' high. Hopefully I misunderstood your
You did, the plans called for a 3' wide by 9' high wall and the contractor
moved the door opening thus reducing the shearwall width to 2'. This was my
point that he did not follow the plans and had no understanding of the
importance of a shearwalls length.
The wall height (plate to plate) was 12', however, I reduced the walls
effective height to 9'-0" (the header heights) by sheathing above all doors
and windows and straping the headers and ultimately blocking and strapping
them to the shearwall. This would make an effective drag strut and reduce the
panels effective height in the process.
I personally feel that any "Framer" should be required to prove his knowledge
of load paths and how to protect the structural system before he steps on a
job site or lifts a hammer.