Wood Floor Foundation for Storage Building


Old 02-16-04, 03:29 PM
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Wood Floor Foundation for Storage Building

Hello...could someone please let me know if there is a link somewhere for a how to w/ diagram for building a plwood covered, wood frame floor/foundation with 24" centers built on concrete blocks for a storage building to set upon.

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Old 02-16-04, 09:34 PM
Join Date: Mar 2000
Location: Arlington, WA
Posts: 9,238
Sorry, i can't help you. I put both my sheds on slabs, and will never worry about having to replace the floors or dealing with them sagging.
Old 02-17-04, 05:40 AM
fewalt's Avatar
Join Date: Feb 2001
Location: sw VA
Posts: 3,100
16" centers would have been preferrable.
But 3/4" exterior plywood should do fine.

Old 02-17-04, 06:46 AM
Dave_D1945's Avatar
Join Date: Dec 2003
Location: Bay Area, CA
Posts: 1,178
You should use pressure treated wood for the joists/stringers and exterior grade plywood for the floor. I would also use pier blocks instead of concrete block. I like to dig a shallow hole (3"-4") about twice the size of the pier block and puddle a concrete base for the pier.

Also make sure that you;

1. Have at least 8" between any earth and wood,

2. Provide adequate ventilation of the space under the floor,

3. Grade the area to ensure that water doesn't collect under the shed.
Old 02-23-04, 08:25 PM
Join Date: Sep 2003
Posts: 344
There is pressure-treated plywood. It's used to build wooden basements.


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