Six reinforced masonry pilaster spaces each have a clear grout area of 8 in. by 8 in. and a height of 10 ft. Ignoring waste, what grout volume is required?
Correct Answer
A) 0.99 cy
One pilaster space is 8/12 x 8/12 x 10 = 4.44 cf. Six spaces require 26.67 cf. Dividing by 27 gives 0.99 cy. Other choices come from using only one dimension conversion, fewer spaces, or rounding the cell size down too far.
Why This Is the Correct Answer
One pilaster space is 8/12 x 8/12 x 10 = 4.44 cf. Six spaces require 26.67 cf. Dividing by 27 gives 0.99 cy. Other choices come from using only one dimension conversion, fewer spaces, or rounding the cell size down too far.
Why the Other Options Are Wrong
Option B: 0.49 cy
grout volume, choice a: 0.49 cy is wrong because 0.49 cy equals about 13.23 cf after cubic-yard conversion; the accepted cubic-foot volume is 4.44 cf before dividing by 27 in.
Option C: 0.74 cy
grout volume, choice b: 0.74 cy equals about 19.98 cf after cubic-yard conversion; the accepted cubic-foot volume is 4.44 cf before dividing by 27 in.
Option D: 0.89 cy
grout volume, choice c: 0.89 cy equals about 24.03 cf after cubic-yard conversion; the accepted cubic-foot volume is 4.44 cf before dividing by 27 in.
Memory Technique
Store grout volume with its last math move; nearby answers are usually unfinished versions of 0.99 cy.
Reference Hint
Open Principles and Practices of Commercial Construction, 11th Ed., 2024; use the index entry or section for "Masonry grout volume takeoff" to confirm that One pilaster space is 8/12 x 8/12 x 10 = 4.44 cf.
More NASCLA Questions
Bid instructions require bid security with each sealed bid. Which purpose should the estimator associate with that requirement?
A wood deck surface has 320 sf of coverage. Boards have a 5-1/2 in. actual face width, and the order includes an 8 percent cutting allowance. What linear footage is closest?
Using the dimensions shown for the stabilized construction entrance, what is the plan area?
A reroof area requires 14,720 sf of rigid insulation. Boards are 4 ft by 8 ft, and the order includes 5 percent waste. How many boards are needed?
Two addenda revise the drawings before bid day. What must a responsive bidder normally do with those addenda?
A utility trench is 180 ft long, 3 ft wide, and 7 ft deep with vertical sides inside a trench shield. What excavation volume is required?
A 120 ft long Type C trench is cut with a 4 ft bottom width and a 6 ft depth. If side slopes are 1-1/2 horizontal to 1 vertical, what excavation volume is closest?
A storm pipe run needs 240 ft of bedding, 4 ft wide and 6 in. thick. Including a 10 percent ordering allowance, how many cubic yards of bedding aggregate are needed?
A mass excavation produces 1,180 loose cubic yards of material for off-site disposal. End-dump trucks can haul 18 loose cubic yards per trip. What truck count is required?
An asphalt-shingle roof has a slope of 3:12. Under the IBC low-slope asphalt-shingle provisions, what underlayment arrangement is required?
People Also Study
Business & Financial Management
120 questions · 70% to pass
Contract Administration
60 questions · 70% to pass
Project Management
60 questions · 70% to pass