[RE-wrenches] Discover AES Wall Mount Considerations

Tue Sep 6 10:04:31 PDT 2022

I agree with James here.  I will relate a "funny" story about a neighbor 
mounting a large Elk antler rack on his wall with lags. Worked fine, 
till one night they heard a big crash, and the antlers had pulled the 
wall stud right out of the wall into the living room. The 2x 4 came 
right out of  the rest of the wall, the couple of nails at the top plate 
were not enough.

I'd say either you beef up all your stud to stud connections with 
serious reinforcing angle brackets, or just use a floor rack. That's way 
too much weight to hang on a wall.  I think its actually really bad 
design, and don't understand why battery manus would even make wall 
mounts.  It brings up a 2nd question, which is how to make all the 
connections without having exposed cables.

I'd actually consider something like  the Fortress instead.

On 9/6/2022 8:38 AM, James Jarvis via RE-wrenches wrote:
> Buckling of the wall studs is most likely going to be the failure 
> mode. You can use WebStructural to look at different designs. You'll 
> find that accurately defining the constraints on the structural 
> members is the most troublesome.
> https://webstructural.com/
>
> Personally, I don't think that supporting a couple of thousand pounds 
> of dead load hanging off the sides of $2 studs fastened with unknown 
> fasteners into unknown top and bottom plates is a super great idea. I 
> would do it on a poured concrete wall, but this sounds like it is 
> asking for trouble.
>
>
> -James Jefferson Jarvis
> APRS World, LLC
> +1-507-454-2727
> http://www.aprsworld.com/
>
>
> On Tue, Sep 6, 2022 at 9:30 AM Jason Szumlanski via RE-wrenches 
> <re-wrenches at lists.re-wrenches.org> wrote:
>
>     2x4 studs have compressive force to hold up over 1,000 pounds each
>     when constructing a load bearing wall, so I don't think that is a
>     limiting factor. But I am not a structural engineer, so consulting
>     one would not be a bad idea.
>
>
>     Jason
>
>
>     On Tue, Sep 6, 2022, 10:21 AM Chris Sparadeo
>     <sparadeo.chris at gmail.com> wrote:
>
>         Thanks Jason,
>
>         I’m still wondering if there is an IBC reference for weight.
>         The Discover manual only states:
>
>         “ For structural and seismic stability, the AES Battery must
>         be mounted onto a vertical supporting surface strong enough to
>         support a minimum of 227 kg (500 lbs) per battery. Failure to
>         follow these instructions can result in death or serious injury.”
>
>         Other than asking a structural engineer, how can I be sure
>         that the wall is rated to 4,500 lbs?
>
>         On Tue, Sep 6, 2022 at 9:20 AM Jason Szumlanski via
>         RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>
>             That won't be a problem as long as they are spread across
>             several studs. Even 2x4 studs would be fine. Check the
>             installation manual for details. The shear and pull out
>             strength of the fasteners will be the limiting factor, not
>             the wall itself unless very poorly constructed.
>
>             https://assets.discoverbattery.com/documents/03_aes/805_product_manual/gui-aes-wall-mount-bracket-installation-guide.pdf
>
>             Jason Szumlanski
>             Florida Solar Design Group
>
>
>
>             On Tue, Sep 6, 2022, 8:59 AM Chris Sparadeo via
>             RE-wrenches <re-wrenches at lists.re-wrenches.org> wrote:
>
>                 Hi all,
>
>                 I have a project where I am contemplating hanging 9
>                 Discover AES batteries on a wall. Each battery is
>                 around 200 lbs, and although the stud wall is a bulky
>                 2”x6” with 16” OC…I have apprehensions that hanging
>                 almost a ton of battery on the wall is a good idea.
>                 I’ve seen it done in other install photos, however I
>                 can’t seem to find and good building code that would
>                 inform my decision.
>
>                 Does anyone out there have a building code reference
>                 or experience that might help?
>
>                 Thanks!
>
>                 -Chris
>                 -- 
>                 Chris Sparadeo
>
>
>                 C_802-369-4458
>                 H_802-728-3059
>
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>         Chris Sparadeo
>
>
>         C_802-369-4458
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