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Loss of shear value

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[#1] Posted: 06/21/2012 - 12:41:09 PM
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On single story houses when the crap siding has been cut off at the bottom and sectioned in is that a big problem as far as structural shear value? Must be on a two story.


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Denny Waters
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Loss of shear value
[#2] Posted: 06/21/2012 - 1:02:11 PM
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Don't think I've ever seen someone ever put the small piece on the bottom? Looks strange. I see the two walls are like that, so I assume the whole house was sided this way?

I don't think shearing is the term you are looking for ( maybe it is and you need to tell me to shut up .) Perhaps racking?


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Loss of shear value
[#3] Posted: 06/21/2012 - 1:08:53 PM
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Big problem?...I don't think so, unless the wall is showing signs of failure because of it.

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Loss of shear value
[#4] Posted: 06/21/2012 - 1:28:00 PM
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So, it's crap wood to start out. LP inner seal most likely. Bottom goes bad because it never got painted/sealed. Then they cut it, don't seal that edge either, jam the z-flashing up tight against it, and now the whole process starts over again. And it now isn't nailed off properly at the bottom. Other than that it works out well.
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Loss of shear value
[#5] Posted: 06/21/2012 - 1:59:23 PM
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How old is the house? Did you see anything indicating something had moved? What do you see that leads you to believe it isn't originial?
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Loss of shear value
[#6] Posted: 06/21/2012 - 2:11:32 PM
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The main panels aren't even 8 feet. Different material used for lower panel. I've seen this on houses in tracts where the house next door didn't have it done and it looked really bad there as far as deteriorated bottom edge.


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Loss of shear value
[#7] Posted: 06/21/2012 - 2:54:37 PM
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If it's siding it shouldn't really matter. If it's doing double duty as the sheathing it was pretty dumb to begin with (was that even allowed in quake areas?), now it's dumber.


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Loss of shear value
[#8] Posted: 06/21/2012 - 5:33:51 PM
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If the paneling is well nailed at the top plate, it will still be pretty hard to push that house down.
If there's no sheathing, ideally, they would have diagonal blocking or diagonal braces set in to the studs. Metal strapping nailed diagonally was used a bit for that. There's lots of cheap ways to build a strong wall.

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Loss of shear value
[#9] Posted: 06/23/2012 - 06:53:21 AM
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The last one of those I pulled apart had Tyvek stapled to the studs and plywood T-111 glued to the Tyvek with construction adhesive. The adhesive only stuck to the staples, and there was no strapping at all. There's lots of cheap ways to build a stupid wall too.
Tom

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Loss of shear value
[#10] Posted: 06/23/2012 - 12:02:01 PM
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Plenty of walls around here have no sheathing but have T1-11 doing double duty as siding and sheathing. Best case is an 8' wall with 9' T1-11 that's nailed to the mudsill and to the top plate of the wall... might keep the house on the foundation in a quake, although it might not because it's rarely if ever nailed with shear nails, just siding nails.

If they went all the way and used truss clips, the whole thing might stay together, if not the roof might slide off and crush your car.

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Loss of shear value
[#11] Posted: 06/23/2012 - 12:49:32 PM
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Hi,

If they use blocking and the proper nailing schedule, I don't see why there'd be a problem with it; the T1-11 is rated as a structural sheathing/siding whether it's plywood or OSB. The OP is correct though; whatever it is, there needs to be a gap above the flashing, the flashing should slope and the bottom edges of that panel need to be well sealed to prevent the panel from wicking water or rot will occur above the Z-flashing the same way it rotted the bottom of the wall.

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Loss of shear value
[#12] Posted: 06/26/2012 - 6:01:43 PM
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Quote: Originally posted by Denray

On single story houses when the crap siding has been cut off at the bottom and sectioned in is that a big problem as far as structural shear value? Must be on a two story.


It's a problem unless they added blocking along the horizontal joint.

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Loss of shear value
[#13] Posted: 06/26/2012 - 9:07:51 PM
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In that one picture with the outlet I don't see any nails along the horizontal. It's been done on the cheap.
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Loss of shear value
[#14] Posted: 09/07/2012 - 7:41:53 PM
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To me that is the three feet for the crawl space.. Its so similar to a Trailer home. It is pretty common.. But a Contractor that wants to do a better job with the house that bottom three feet would of been Some sort of Venier or anything that would make it look more attractive than just crappy T1-11.
Important things is that the Weather Seal between the two different sizes of Material is present... and No Failure has happened then your Good.. other than it looks like crap..

Quit bitching. I didn't build it.. I just Observe and Report..
   
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