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Re: Lag Bolts in Sht. Metal Straps

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Sheet metal at 24 gage is pretty thin (~.020"), IMO rather  mis-matched to a 3/8" or 1/2" lag.

I don't what your loading scenario  is...e/q?  static dead load? 

Perhaps you take a look a some Simpson straps that use their 1/4" SDS screws. 

The SImpson SDS screws install very easily & are quite good in 2x studs.  

Using a Simpson catalog strap values  you'd  get a pretty  handle on the expected capacity;  plus the strap & the screw capacity would be pretty well matched.


On 9/6/07, Larry Hauer <lrhauer(--nospam--at)> wrote:
I'm working on the anchorage of equipment to existing wood stud walls and
need to know what the minimum thickness of sheet metal strapping is for both
a 3/8" diam. and 1/2" diam. lag bolt acting in shear and what those shear
values are. I understand the values ares in some light gauge metal handbook
which I do not have. I would like the thickness to be the minimum possible,
(24 ga.?), and still get an allowable shear value of about 400#.

Thanks in advance.

Larry Hauer S.E.

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