CMP 124 Exam 2 Questions and
Answers 100% Pass | Graded A+
CMU - ✔✔Concrete Masonry Unit
CMU's are made of - ✔✔- Portland Cement
- Water
- Aggregate (Fine)
- Admixtures (Sometimes)
Types and Reasons for Admixtures in CMU - ✔✔- Air Entrainment: For
protection
- Certain admixtures are used for finish
Weight of Certain CMU's - ✔✔- Standard Weight
* 8'' Block = 45lbs
* Above + Below grade
- Light Weight
*8'' Block = 25lbs
* Above grade
,-Difference in weights comes from aggregate
CMU (block) Height - ✔✔-Full height = full 8''
-Modulars = 7'' 5/8
Type and grade of CMU - ✔✔- Type I: M.C. is controlled (Better)
- Type II: Not restricted to M.C
- Grade N:Suitable for general use (Exterior wall, above or below grade)
(Better)
Grade S: Limited above ground use only
CMU (block) Shapes - ✔✔- Regular
- Bull hose
- Jamb/ Split-able
- Lintel
CMU (block) Cores - ✔✔- 2 core: Cores always line up
*lighter and costs less
, - 3 core: Cores don't line up
Laying out a wall - ✔✔- Find the true corners of the wall (check for
squareness
-shoot corners for height
-build leads (corners)
-run in center
-damp proof
Footings size - ✔✔usually 8'' thick and 16'' wide
Shape of footings - ✔✔*add pictures*
Comparison of Foundation walls - ✔✔-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 - ✔✔-Damp proof: Spray, Brush, roll on (Oil Based)
-Moisture proof: Tar, rubber, mastic (more $)
Bricks - ✔✔Made of clay
3 Funtional properties of Exterior brick masonry wall - ✔✔3 funtional
properties
-Strength: compressive
Answers 100% Pass | Graded A+
CMU - ✔✔Concrete Masonry Unit
CMU's are made of - ✔✔- Portland Cement
- Water
- Aggregate (Fine)
- Admixtures (Sometimes)
Types and Reasons for Admixtures in CMU - ✔✔- Air Entrainment: For
protection
- Certain admixtures are used for finish
Weight of Certain CMU's - ✔✔- Standard Weight
* 8'' Block = 45lbs
* Above + Below grade
- Light Weight
*8'' Block = 25lbs
* Above grade
,-Difference in weights comes from aggregate
CMU (block) Height - ✔✔-Full height = full 8''
-Modulars = 7'' 5/8
Type and grade of CMU - ✔✔- Type I: M.C. is controlled (Better)
- Type II: Not restricted to M.C
- Grade N:Suitable for general use (Exterior wall, above or below grade)
(Better)
Grade S: Limited above ground use only
CMU (block) Shapes - ✔✔- Regular
- Bull hose
- Jamb/ Split-able
- Lintel
CMU (block) Cores - ✔✔- 2 core: Cores always line up
*lighter and costs less
, - 3 core: Cores don't line up
Laying out a wall - ✔✔- Find the true corners of the wall (check for
squareness
-shoot corners for height
-build leads (corners)
-run in center
-damp proof
Footings size - ✔✔usually 8'' thick and 16'' wide
Shape of footings - ✔✔*add pictures*
Comparison of Foundation walls - ✔✔-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 - ✔✔-Damp proof: Spray, Brush, roll on (Oil Based)
-Moisture proof: Tar, rubber, mastic (more $)
Bricks - ✔✔Made of clay
3 Funtional properties of Exterior brick masonry wall - ✔✔3 funtional
properties
-Strength: compressive
