l live multiple choice selections for each of the questik 1. The basic differenc
ID: 1712816 • Letter: L
Question
l live multiple choice selections for each of the questik 1. The basic difference between clay unit s and concrete units is: a. Concrete units have higher density b. Clay units are in general much stiffer and stronger than concrete units e. Concrete units are extruded through a pug mill d. Clay units are generally molded under high pressure e. None of the above 2. The actual dimension of an cight-inch concrete masonry unit can be expected to be: a. 8.00 x 8.00x 16.00 inches b. 7.63 x 7.63 x 15.63 inches c. Plus or minus 1/8 inch from the dimension given in part b. d. Whatever dimensions are delivered to the job site e. None of the above 3. The compressive strength of mortar after placement on a unit is dependent on a. The absorption of the unit b. Amounts of cement and lime relative to saned c. The amount of water placed in the mortar mixer d The amount of time mortar if left on a mortar board before placement e. All of the above 4. The compressive strength of grout after placement is: a. Not dependent on the absorption of the units b. Not dependent on the relative amounts of cement and aggregates used in the mix c. The same as high-slump concrete with the same cement content d. Whether low or high-lift grout is done e. None of the above 5. Movement joints in clay masonry are required: a. At the side of all window and door openings b. At every story beneath shelf angles in brick veneer c. To accommodate moisture expansion d. To accommodate thermal expansion e. All of the aboveExplanation / Answer
1) Option B is correct. Clay units have higher strength and much stiffer and stronger than the concrete bricks.
2) option A is correct. For 8 inch concrete brick, 8X8X16 inch is the correct dimension.
3) Option e is correct. Compressive strength depends on the all the above.
4) Option C is correct. It the same as high slump concrete with the same cement content.
5) option e is correct. All the above stated are ocrrect. It is to accommodate the thermal and moisture expansion and it should be placed at side of all window and door openings and at evey story beneath the shelf angles in brick veneer
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