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For those interested in shear walls I would recommend "Guide to Wood Construction In High Wind Areas" by the Wood Products Promotion Council.
There are more manuals out there but this is very good. This manual covers only high wind loads and not seismic loads. Also the WFCM from the American Forest & Paper Association is good. I use both books for calc. loads and location shear walls. They have real good details that everyone should have in their library. This does not replace the engineer but will give the designer a good grasp of concept of shear walls, drag struts and other structural assemblies that address the moments within a building.
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Shear walls are meant to resist a given force, so nailing, holddowns and sheathing and thickness can vary in each and every connection / location.
So my question is How much force are you trying to resist?
If you don't know and do not know how to calculate it, then how can you assign value to it?
Like richard said "It is and would be better left to a structural engineer!
I have a Shear table that I use that was design by my structural engineer. He locates the shear walls (redlines) on my drawings and references back to the schedule. In that schedule it calls out the force /energy it is designed to resist in foot pounds.
This schedule has about 30-40 different types of shear walls type (exterior, interior, with and without holddowns, sheathing type (plywood, OSB, Gyp. Board, etc.), fastener type (nails, screws etc.) and spacing.
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Shearwall
Maybe there is confusion between shear walls and braced wall panels? Around here if it’s called a shearwall is MUST be done so by an engineer. Under conventional construction we can use “braced wall panels, but not “shearwalls” although they are pretty much the same thing.
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I came across this very informative document on the Fairfax county Permit Dept website. It is for designs up to 90 MPH winds in 3 second gusts.
http://www.fairfaxcounty.gov/dpwes/p...nd_bracing.pdf
Lew
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Go to:
www.apawood.org
Download pdf E30WALL. This a full nailing schedule for shear walls.
Kenneth M. Lynch, AIBD,CBO
K M Building Consultants
9 Newman Place
Brookfield, CT 06804
Ph 203-775-0927
Fax 203-775-0928
lynchkm@charter.net
Website - www.kmbuilding.com
"The only way to do great work is to love what you do"
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