Should I be worrying about the weight of firewood in my wood shed?

Most of what I have this year is hard maple. I'm seeing online calculations that completely unseasoned maple is around 4500lbs per full cord. Right now I have my wood shed around half full with almost 2 cords which I guess would be around 9000lbs. Seems crazy for a shed with 2x6 joists on 16" centers to handle much more than that. Does anyone have any insight on this?

 

How many concrete blocks or piers is the shed sitting on? The more, the better to evenly distribute the weight obviously.

 

Look up a span load chart for 2x6 lumber...as long as its supported enough it will be fine...but with long spans it may be a problem...especially if a board has a knot in exactly the wrong spot. I have a broken 2x10 floor joist in my house from the "knot in the wrong" spot issue...

 

Size of shed floor is needed as per load is calculated per square foot

 

How tight is it stacked? If you have enough blocks/piers holding it up i wouldnt worry.
I have red maple tightly stacked in a shed. The floor is framed with 2x8 and i only supported the corners. It has some sag but im not worried. It was an old 8x10 tree house that was taken down and was sitting on grade before i propped it up and was offered to me for wood storage. Pic from August. Still have to finish roof and two more rows of splits to stack.

 

Is it under the bedroom???

 

Good one...no its almost against the one wall under the living room...fortunately it was almost against a supporting wall in the basement too...so I was able to just put a jack under it without it being in the road...can't really sister it because of heat ducts running parallel on both sides of it.

 

10x12, almost half of it has wood sitting on it now.

 

9 concrete piers.

 

I’m no structural engineer but 9 piers on a 10 x 12 structure sounds like a pretty stout foundation.

 

If they are piers poured in a "sonotube" round concrete form (or the like) dug into the ground i wouldnt worry. Blocks resting on the ground could sink in.

I built a 4x36' lean to shed for a friend two years ago and set cement blocks on grade, leveled. It has settled slightly in spots as the ground is squishy at times as the water table is high in his back yard. Pic from February last year.

 

9?
If the shed is 10x12', and the 2x6's are 10' long, that means there are nine of them (12' wide) since you said they are 16" c/c...so don't you need 18 piers if you are gonna support each end of the 9 2x6's...or am I missing something about how its built?
If you have it half full with 2 cords @ 9000 lbs, then that means you have 9000# sitting on 60 sq ft...which works out to 150#/sq ft...or about 3 times the load that the average floor is built for.
I didn't do the math on what the allowable span would be on 150#/ft...maybe eatonpcat knows off hand...

 

I need 4 of those when your schedule opens up

 

I know up here 100 pound square foot is required for decks 2 x 6. 16 OC is 8 foot. Terrible decks too bouncy.
I can’t figure 9 supports unless carrying beam

 

With the deck demo i did i may have enough lumber to build them. Took me a long time to do that one working part time.

 

That should be enough weight to stop the shed from blowing away.

 

The outside pieces and the middle 10' run are all 2x8 beams resting on deck blocks.

 

You should be fine. But yes, it's something that she people don't pay attention to. When I built my shed, I ended up adding beefier joists and more concrete support blocks than I planned at first.

Mine is three bays 8x10 each bay. No issues even with 20+ or so tons per bay of treated as green when it was stacked.