A bricklayer is building a brick rectangular post to anchor a mailbox The post is 3 ft tall 2 ft deep and 2 ft wide Each brick is 3 in by 6 in by 3 in How many bricks does he need?

Answer 1

4 bricks each side per layer times 2 sides plus 3 bricks per layer front and back equals 14 bricks per layer. (4+4+3+3)=14 .

Then multiply each brick layer times 4 for each foot high times 3 for 3 feet high equals 12 layers high.(4 bricks high per foot times 3 feet high=12 bricks high.)

So 14 times 12 equals 294 bricks. I you add a cap stone(3 inches high by about 28 inches square) then you can subtract 1 layer of bricks) and secure the mail box. This assumes no space for mortar between bricks. Adjust as necessary. (14x12)=294. The space inside the brick structure will be 1.5 ft x 1.5 ft x 3 ft high = 6.75 cu ft.

Answer: 294 bricks or 280 plus the cap stone. 4 bricks each side per layer times 2 sides plus 3 bricks per layer front and back equals 14 bricks per layer. (4+4+3+3)=14 .

Then multiply each brick layer times 4 for each foot high times 3 for 3 feet high equals 12 layers high.(4 bricks high per foot times 3 feet high=12 bricks high.)

So 14 times 12 equals 294 bricks. If you add a cap stone(3 inches high by about 28 inches square) then you can subtract 1 layer of bricks) and secure the mail box. This assumes no space for mortar between bricks. Adjust as necessary. (14x12)=294. The space inside the brick structure will be 1.5 ft x 1.5 ft x 3 ft high = 6.75 cu ft. Fill with whatever you want or leave open. If you want the structure solid then each layer would need to contain 48 bricks times 12 layers or 576 bricks with no capstone.

Answer: 294 bricks or 280 plus the cap stone. If solid, 576 bricks with no cap stone. 528 with a capstone replacing one layer