concrete calculation for stemwall and bond beam fill


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Old 07-31-10, 08:04 AM
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concrete calculation for stemwall and bond beam fill

Hey,

any professionals have a formula or technique for figuring yards of concrete necessary to fill stacked 8x16 cells in common block (like piers) and for 8x16 continuous bond beam?
 
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Old 07-31-10, 10:28 AM
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First, if it was for commercial work, concrete would not be permitted because it does not perform as well as masonry grout (which has finer aggregate and more water). For a casual residential job concrete will work good enough since you will not see a knowledgeable inspector.

For 8x8x16 block, assume 50% to 55% solids, so the fill material would be 45% to 50% of the wall volume. Is there a good reason for filling all of the block cores?

For a bond beam, assume you need about 55% of the total bond beam volume for filling depending on the individual shape used.

Better to have too much than too little unless you don't mind running back to the "big box" and buy from an "assistant/associate" that is new to the department.

Dick
 
 

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