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Posted by PeterD on April 18, 2008, 10:07 am
wrote:
>I'm building a wall of storage shelving for my 45 record collection (appx.
>20,000). The records are stored 200/box and each box is 16x8x9, weighing
>15lbs. Will 3/4" plywood shelving 4 feet long support this load without
>deflecting, each shelve will be loaded to 75lbs with supports on the ends
>only.
>
There are many different types of 3/4" ply, so there is no one
'correct' answer to your question.
Personally, I'd not expect a 4' span to support that much weight, over
a longer term. Eventually it *will* sag.
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Posted by S. Barker on April 18, 2008, 11:34 am
They will sag with time. BUT if you finish both sides equally, then you can
turn them over now and then.
s
> I'm building a wall of storage shelving for my 45 record collection (appx.
> 20,000). The records are stored 200/box and each box is 16x8x9, weighing
> 15lbs. Will 3/4" plywood shelving 4 feet long support this load without
> deflecting, each shelve will be loaded to 75lbs with supports on the ends
> only.
>
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Posted by dadiOH on April 18, 2008, 12:24 pm
Jeff D. wrote:
> I'm building a wall of storage shelving for my 45 record collection
> (appx. 20,000). The records are stored 200/box and each box is
> 16x8x9, weighing 15lbs. Will 3/4" plywood shelving 4 feet long
> support this load without deflecting, each shelve will be loaded to
> 75lbs with supports on the ends only.
Plug in the numbers here and see...
http://www.woodbin.com/calcs/sagulator.htm
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico
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Posted by tom on April 18, 2008, 12:52 pm
> I'm building a wall of storage shelving for my 45 record collection (appx.
> 20,000). The records are stored 200/box and each box is 16x8x9, weighing
> 15lbs. Will 3/4" plywood shelving 4 feet long support this load without
> deflecting, each shelve will be loaded to 75lbs with supports on the ends
> only.
http://www.stumbleupon.com/demo/?review=1#url=http://www.woodbin.com/calcs/sagulator.htm
Enjoy. Tom
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Posted by dpb on April 18, 2008, 12:54 pm
Jeff D. wrote:
> I'm building a wall of storage shelving for my 45 record collection (appx.
> 20,000). The records are stored 200/box and each box is 16x8x9, weighing
> 15lbs. Will 3/4" plywood shelving 4 feet long support this load without
> deflecting, each shelve will be loaded to 75lbs with supports on the ends
> only.
Other suggestions ok, my $0.02 be to go w/ the 32" spacing for 2
boxes/shelf instead of 3.
If really, really, really don't want to do that for some reason,
probably can get by if put a 3/8" back on it (which really would need
for stability, anyway) and nail the shelves w/ a 6d finish nail. To
make it a little dressier, rabbet the back edges to inset the ply
instead of just nailing it on the back.
Will need a back or other lateral bracing whatever size you make them.
--
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