Battery Weight over Floor joists

[sten]

Maybe i'm being pedantic but should i worry about 4-48kg batteries + the weight of the server rack on my floor? ~ 500lbs worse case on 4 castor wheels.

Joists are 2x10s 16oc with about a 10 foot span - I can measure for sure for the span if its close.

Should i be at all concerned?

Thanks!

 

[Ampster]

Nothing to worry about, especially if it is near a wall. The castors will create point loads so it is more of an issue of the subfloor between the joists. I piece of 3/4 inch plywood would help spread the load if you see any distortion.

 

[sten]

@a

The castors will create point loads so it is more of an issue of the subfloor between the joists. I piece of 3/4 inch plywood would help spread the load if you see any distortion.

Yeah ok that too, was looking at them and thats a heavy load on those little wheels. 3/4 plywood it is

 

[Steve_S]

2x10, 16OC is well within the code and you should not have any issues if you have 3/4" Plywood subfloor. Depending on your floor covering (think vinyl / lino) the casters themselves may leave a bit of an indent after a while, that's about it, which I don't consider a problem.

 

[MichaelK]

Is this a first-floor or second-floor installation? Is there a crawl-space under your battery location? For my own installation, when I build my utility room, I cast a T in my footer to directly support the floor joists with concrete in the area where the batteries would be located.

If there is a crawl space, and you want to go to the effort, you could drag a concrete block under the floor and block it in place. Going into the crawl-space though is nothing I'd ever look forward to.

 

[sten]

Is this a first-floor or second-floor installation? Is there a crawl-space under your battery location? For my own installation, when I build my utility room, I cast a T in my footer to directly support the floor joists with concrete in the area where the batteries would be located.

If there is a crawl space, and you want to go to the effort, you could drag a concrete block under the floor and block it in place. Going into the crawl-space though is nothing I'd ever look forward to.

Im in FL on stilts, but im working on a electrical shed so eventually itll go away

 

[BartHenry]

plywood or 2x4s across the span, and your good.

 

[labeeman]

Im in FL on stilts, but im working on a electrical shed so eventually itll go away

If you are on stilts I would worry about water if the batteries were on the ground and leave them up off the ground.

 

[sten]

If you are on stilts I would worry about water if the batteries were on the ground and leave them up off the ground.

im 12 feet up, if the batteries are wet FL is gone

 

[labeeman]

im 12 feet up, if the batteries are wet FL is gone

Storm surges can and have been higher than that I am in South Louisiana but with batteries on the ground they will be toast if they go underwater.

 

[sten]

Storm surges can and have been higher than that I am in South Louisiana but with batteries on the ground they will be toast if they go underwater.

Im a mile from the coast tho :D

 

[schmism]

design load for most floors is 40lbs per sq foot. so 500lbs needs to be spread over ~12.5 sq ft.

 

[labeeman]

Im a mile from the coast tho :D

I have seen a storm surge go inland at least five miles inland here in Louisiana a mile in no insurance against that.

 

[Supervstech]

I have seen a storm surge go inland at least five miles inland here in Louisiana a mile in no insurance against that.

Yeah, but isn't S. Louisiana several feet below sea level already? Or is that just new Orleans?

 

[Tim Tim]

Maybe i'm being pedantic but should i worry about 4-48kg batteries + the weight of the server rack on my floor? ~ 500lbs worse case on 4 castor wheels.

Joists are 2x10s 16oc with about a 10 foot span - I can measure for sure for the span if its close.

Should i be at all concerned?

Thanks!

I could do the calculations for you but straight out you are talking about the weight of two adults and structurally your floor most certainly can take that. Without even looking at the stress grade of your floor joists at a 10 ft span they wouldn’t even have any spring in them let alone be close to failing. 192 kg is 423lbs.

Install your batteries then jump up and down on the floor. If it gives way then you know it didn’t work .

 

[nc73]

im 12 feet up, if the batteries are wet FL is gone

We can only hope

 

[labeeman]

Yeah, but isn't S. Louisiana several feet below sea level already? Or is that just new Orleans?

Or is that just new Orleans Yep and still sinking.