shear wall sheathing
shear wall sheathing
(OP)
How high does the plywood sheathing need to extend for a shear wall on a wood framed wall? To the bottom chord of the truss? To the top chord of the truss? Reasons?
When was the last time you drove down the highway without seeing a commercial truck hauling goods?
Download nowINTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS Come Join Us!Are you an
Engineering professional? Join Eng-Tips Forums!
*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail. Posting GuidelinesJobs |
|
RE: shear wall sheathing
csd
RE: shear wall sheathing
DaveAtkins
RE: shear wall sheathing
RE: shear wall sheathing
Are you talking about shear walls on the exterior of the building where the trusses bear? Or other shear wall?
RE: shear wall sheathing
RE: shear wall sheathing
DaveAtkins
RE: shear wall sheathing
RE: shear wall sheathing
Not usually unless the engineer of record requires it. Most trusses are designed solely as gravity components and any lateral load brought through the truss is not provided for in the "standard" truss designs unless the design plans require it....even then I'd wonder if they would do it as I don't think the typical truss software that is used provides for that sort of loading.
So usually you use sheathing or other means to provide the complete load path required.
RE: shear wall sheathing
RE: shear wall sheathing
Mike McCann
McCann Engineering
RE: shear wall sheathing
Is this a gabled truss above the endwall?
RE: shear wall sheathing
Here, too, the SW sheathing must extend to the roof diaphragm. This is not to say though, that if it cannot continue above the wall top plate in one continuous line, that another section of the truss be sheathed and nailed off to transfer the same force with the double top plate serving as a drag link between the two respective sections of the shear walls. Is this your situation?
Mike McCann
McCann Engineering
RE: shear wall sheathing
However, if that is not possible, and I need to keep the sheathing on the outside face, do I need to put some hold downs on either side of the columns to transfer the potential over turning forces? I also have a steel beam interrupting the diaphragm, but I have the connection detailed so the studs can transfer the shear through the beam via bolts.
Sorry this is getting so long, but if the shear wall sheathing runs all the way to the roof diaphragm, is there even a need for a special shear connection between the bottom chord of the truss to the top plate of the stud wall?
Thanks everyone for your help!
RE: shear wall sheathing
RE: shear wall sheathing
You will need a minimum of double studs on either side of the pipe column with strap holddowns.
Is the endwall truss interrupted by the pipe column too?
Interrupted or not though, you will need strap holddowns from the truss to the two studs below on each side of the pipe column. That way you can sheathe the outside of the truss rather than the inside.
Mike McCann
McCann Engineering
RE: shear wall sheathing
RE: shear wall sheathing
Strap holddowns should be all you need and they can be installed vertically on either the inside or outside of the end wall.
Mike McCann
McCann Engineering