lead expansion cinch 3

[Lion06]

Does anyone know where to find any information on a lead expansion cinch? I have a submittal that has these in it, but the submittal (and the contractor) have no information on them other than, "they're common for this application". That's great, but I'd still like to see something on them.

 

[jike]

Request that the contractor a data sheet from the particular manufacturer.

 

[PST09]

Out of interest what it the 'application that you describe'?

 

[Lion06]

The application is attaching blocking to limestone. I asked for some kind of manufacturer's literature, but he doesn't have any and is really giving me a hard time for asking for it.

 

[jike]

If it is just wood blocking, then I assume the loads are not very significant.

 

[Lion06]

The loads are not significant at all - it's just an attachment of a light architectural component. The problem is that I don't want to just say ok without actually being able to say, in my own mind, that it's ok.

 

[dgowans]

Something like the conical lead anchors shown here?

http://www.mcmaster.com/#masonry-anchors/=2j1e4l

(lead expansion cinch = fancy name for a masonry anchor?)

 

[Lion06]

I don't think so. The way the contractor explained it to me is that you pre-drill a hole in the limestone (or mortar joint), then insert the pre-threaded "cinch" (which is similar to a drywall anchor). You can then use a regular wood screw to drive into the "cinch" which expands against the masonry. He doesn't have any literature on it, though.

 

[jike]

They look like this:

http://www.anchor-fastener.com/zinc-alloy-anchor-fastener/lag-screw-shields.htm

http://www.acehardwareoutlet.com/(jvj424alhpt2kk45vgtn34vr)/ProductDetails.aspx?SKU=51835

You can buy them in any hardware store.

 

[MiketheEngineer]

I think Simpson and USP sell the same thing. AND yes the mfg should be able to provide details. Thats BS if he can't provide them....

 

[BAretired]

Good answer, jike but the contractor should be still able to provide documentation for the anchors he intends to use.

BA

 

[Lion06]

Nice find, jike!
Star for that.
Thanks!

 

[dgowans]

Oops - posted the wrong link earlier:

http://www.mcmaster.com/#catalog/115/3265/=2j1u63

is what I meant but it seems moot at this point. McMaster-Carr also has the same thing that jike posted, along with several other styles of the same concept.

I agree that it should be pretty trivial for your contractor to provide some detail on this - even a sample would have gone a long way to get past what appears to be a simple issue of you not being familiar with the contractor's vernacular (no slight intended to you).

 

[racookpe1978]

The hardware builder (China) and hardware seller (Lowes, Home Depot, Ace, True Value, ...) doesn't want to put out literature because homeowners are going to abuse anything: and, wrose, today's home "repair" nitwit is lawsuit happy and hardware ignorant. A perfect combination for installing the lead insert badly, then overloading it anyway, then suing when the picture frame falls down and breaks grandma's photograph.

Go to Lowesr and Home Depot: You should know your load, there are tables in the hardware section showing how many pounds different hangers can hold up. These are usually sold for a shear load (a vertical weight like a picture or cabinet) hanging on a wall.

It sounds like you are really worried about pullout load though.

You will likely need to either go to a hollow wall type anchor or (through wall) bolt and nut, or put two or three lead anchors in your wall and test them yourself.

Given a manufactor, call him and ask. Hilti sells anchor bolts and tie-down grout/epoxy for anchoring vertical loads that I've used. Their "vertical" pull-out anchor bolts information will be valid for your "horizontal" pull-out needs.