Definitely agree on all your points. But then again I have been in more than one NYC apartments, 
we're talking maybe 1900's through 1920's buildings here, obviously metal beams or super-strong 
wooden construction. In these several apartments, I've seen books, records, tapes and equipment 
stockpiled to the extent that there is barely room to move. You'd never in a million years think the 
floor could hold it or that it's humanly possible to lug all that stuff up XX flights of narrow old 
stairs. But yet, there it is. And I'm sure I have not seen anywhere near a small fraction of the 
total NYC apartments and lofts that fit this description.

Then there's our house. 1975 Brady Bunch plywood and pine special. Even having 3 desks in our office 
puts noticeable strain and creak in the floor, which is over our garage. So, all the records and 
tapes go on the slab. No collapses yet, in 12 years.

----- Original Message ----- 
From: "Jim Lindner" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Thursday, December 21, 2006 2:54 PM
Subject: Re: [ARSCLIST] Floor Load Capacity

Slabs have issues that need to be investigated as well, not all of
them are poured as thick as others and just because it is on ground
level does not mean that it has the ability to withstand a high load
per square foot. Allot depends on the amount and type of rebar and
the depth of the pour and type of concrete mix. Also some floors have
things buried in them - like heating pipes and electrical pipes.
Sometimes there can be an erosion of some of the soil under the floor
which can lead to the floor becoming cantilevered without being
designed that way - drainage can be an issue. Again - all good
reasons to have an inspection by a knowledgeable person.

Jim Lindner

Email: [log in to unmask]

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On Dec 21, 2006, at 1:37 PM, Tom Fine wrote:

> For what it's worth, when my parents moved into the house I grew up  in, a few years before I was 
> born, they decided to consolidate  their very large collection of records and tapes -- at least 
> those  not in my father's office at the studio. The basement was non-ideal  because it's too wet 
> and too dark/dank for my mother in any case.  So they decided to put them all on a long wall, 
> floor to ceiling,  in their shared office room. The contractor planned out the shelves  and then 
> did weight estimates and promptly changed the plan so that  first of all, the shelves were on a 
> structural wall and second that  there were new reinforcing columns added below. He did something 
> where the weight is centered on a foundation wall (stone and  morter) because the wall is where 
> the original house meets a late  1800's expansion (the office is the ground floor of the 
> expansion).  The shelves have been chock full -- I mean full to the brim -- of  records and tapes 
> since 1964 and no problems thus far. I'd estimate  the weight must be approaching a ton, spread 
> down a 15' or 20'  length. The shelves are hardwood, I think.
> In my house, I have a similar shelf, but it's free-standing on the  carpeted concrete slab 
> downstairs. I just stacked up a wall's worth  of those pine cubes you can find at AC Moore and 
> other stores. AC  Moore has a coupon in our pennysaver each week, so all were bought  at 30 or 50 
> percent off sticker. There's another similar stack in  the furnace room for my extensive 
> collection of audio books and  magazines.
> By the way, at 128K MP3, the entire wall at my parents' house could  fit in an 80-gig iPod, half a 
> deck of cards. The quality would not  be anywhere near the original, though.
> -- Tom Fine
> ----- Original Message ----- From: "Roger and Allison Kulp"  <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, December 21, 2006 1:00 PM
> Subject: Re: [ARSCLIST] Floor Load Capacity
>> I never had to worry about that,as mine have always bee in a  ground-level area, witha a concrete 
>> floor.I would not suggest  anybody store a big collection any other way.
>>                                 Roger Kulp
>> Nicole Blain <[log in to unmask]> wrote: Hello all,
>> Does anyone know what the standards are for floor load capacity  for stacks of 12" vinyl and 10" 
>> shellac discs.
>> The standard for library book stacks is ~150 pounds psf.  I tried  and failed to find anything on 
>> the internet that specifies vinyl  and/or shellac.  I imagine it would be higher for the latter. 
>> If  there's an official document or study out there too, it would help  convince the 
>> architects/engineers that this is an important issue.
>> I found an article in the Fall 1993 ARSC Journal: Storage of Sound  Recordings by Richard Warren 
>> Jr.  He has weight per linear foot,  but not floor load capacity.
>> Our collection houses ~175,000 12" vinyl and ~30,000 10" shellac  discs.
>> Merci,
>> Nicole
>> Nicole Blain
>> Manager, Music Library/
>> Chef, Musicothèque
>> CBC/Radio-Canada
>> P.O. Box 500, Station A
>> Toronto, ON
>> Canada  M5W 1E6
>> Tel: 416.205.5901
>> Fax: 416.205.8574
>> [log in to unmask]
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