Deck 20: Estimating Concrete Block Masonry Materials

Question 1

When estimating blocks with a square feet method, use this as a guide: the square feet of wall are multiplied by _____ will equal total blocks.

A) 0.75
B) 1.125
C) 1.25
D) 1.275

Answer 1

B

Question 2

Water does not require estimating as a material.

Answer 2

True

Question 3

Be conservative when estimating sand, as storage and disposal are costly.

Answer 3

False

Question 4

Since one concrete block measures _____ in height including the mortar joint, _____ the height expressed in inches to find the number of blocks of which the height consists.

A) 6.75 inches; divide7 into
B) 8 inches; divide 8 into
C) 8 inches; multiply 0.8 by
D) 10 inches; multiply .010 by

Question 5

The ratio of block to feet in length of a wall is ______ .

A) 0.75 to 1.00
B) 0.66 to 1.00
C) 0.5 to 1.0
D) 1 to 1

Question 6

Labor costs for block work are affected by many of the same factors that affect labor costs for brickwork.

Question 7

Estimating by determining the number of Chapters involves adding the wall lengths and figuring the total linear feet.

Question 8

One ton of sand is needed for each _____ bags of masonry cement.

A) five
B) six
C) eight
D) ten

Question 9

If more than three tons of sand are needed, _____ should be allowed for waste.

A) none
B) 1 ton
C) ½ the estimated sand
D) ½ ton

Question 10

Estimating by rule of thumb can be accomplished even by the most inexperienced mason.