CMU
Concrete Masonry Unit
CMU's are made of
- Portland Cement
- Water
- Aggregate (Fine)
- Admixtures (Sometimes)
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Brainpower
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Types and Reasons for Admixtures in CMU...
CMU (block) Cores - ANSWER- - 2 core: Cores always line up
*lighter and costs less
- 3 core: Cores don't line up
Laying out a wall - ANSWER- - Find the true corners of the wall (check for
squareness
-shoot corners for height
-build leads (corners)
-run in center
-damp proof
Footings size - ANSWER- usually 8'' thick and 16'' wide
Shape of footings - ANSWER- *add pictures*
Comparison of Foundation walls - ANSWER- -Block: More labor
-Poured Concrete: More material
^those 2 same cost
-Wood: High initial cost but way less cost in labor (fast erection time)
Moisture proofing - ANSWER- -Damp proof: Spray, Brush, roll on (Oil Based)
-Moisture proof: Tar, rubber, mastic (more $)
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