# of rebar in cinder block wall

Old 08-07-10, 06:48 PM
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# of rebar in cinder block wall

I'm checking for info and would like to know the standard for a 6x64' cinder block wall on clay flat ground, as an open space divider between properties. This would be in Cali, not in an earthquake zone. I've seen three different standards, and would like to know which would be best for the wall.

1a) One 8'x5/8" rebar for every 4 feet (3rd block), i.e. 22 rebar, filling only the blocks with the rebar. This has been the most common response;

b) One rebar for each cinder block on foundation, i.e. 48 rebar, filling only the holes with the rebar;

c) One rebar every 4 feet, plus horizontal rebar on every 2nd row. This also comes out to 48 rebar.

2) Would additional rebar be used in the foundation and how much.

3) I've seen suggestions to either leave the non concrete holes open, or to fill them with concrete or dirt. My preference would be for compacted dirt, rounding the top with concrete, and sealing the wall with surface bonding cement.

Constructive comments appreciated.
Old 08-09-10, 04:58 PM
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What would the purpose of filling them with dirt be?

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