Why does a concrete specification control water-cementitious material ratio rather than judging the mix only by slump?
Correct Answer
A) Water-cementitious ratio strongly affects strength and permeability after hardening
Water-cementitious ratio is a primary driver of hardened strength and permeability, while slump only describes fresh consistency. Other choices: slump is not the same as water-cementitious ratio, high water content can hurt durability, and the ratio is not merely a paperwork label.
Why This Is the Correct Answer
Water-cementitious ratio is a primary driver of hardened strength and permeability, while slump only describes fresh consistency. Other choices: slump is not the same as water-cementitious ratio, high water content can hurt durability, and the ratio is not merely a paperwork label.
More NASCLA Questions
Bid instructions require bid security with each sealed bid. Which purpose should the estimator associate with that requirement?
Two addenda revise the drawings before bid day. What must a responsive bidder normally do with those addenda?
An asphalt-shingle roof has a slope of 3:12. Under the IBC low-slope asphalt-shingle provisions, what underlayment arrangement is required?
A rooftop unit schedule lists capacity in tons of cooling. In HVAC estimating, one ton of cooling equals what heat-transfer rate?
The bid form asks for a base bid and three alternates. How should the contractor submit alternate pricing?
A specification includes a $40,000 hardware allowance because final selections are pending. How is the allowance treated in the bid?
The earthwork section requires unit prices for unsuitable-soil removal. What is the contract-administration use of those unit prices?
Before the first progress payment, the owner requests a schedule of values. What is its main contract-payment function?
A signed change order is issued for added lobby millwork. Which contract effect should it state?
On the finish plan, locate room R358; then use the finish schedule. What remarks is listed?
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