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@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.ch...@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@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@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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