Describe the conditions and considerations that should be met when placing concrete in hot weather.
What will be an ideal response?
In addition to maintaining low concrete temperature by cooling the aggregates and water, precautions must be taken to maintain a low temperature while placing concrete. This can involve shading and painting the mixers, chutes, hoppers, pump lines, and other concrete handling equipment white. Forms can be cooled with water, and the sub-grade can be moistened before the concrete is placed. Concrete must be transported from the mixing station to the point of placement as quickly as possible. In hot weather, the mix should be in place 45 to 60 minutes after mixing.
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Formulas with random time sequence with index starting with i=0 and conditional formatting. The following worksheet computes 10 random values using RAND() and finds the average, variance and standard deviation.
a. What is the formula in E2?
b. What is the formula in E4?
c. What is the formula in E6?
d. The cells in Column B that are less than the ________ are highlighted using conditional formatting.
Installing 16 solar PV panels required 2?8 hours of work. If each panel took the same amount of time to install it, how much time was needed for 1 panel to be installed?
Fill in the blank(s) with the appropriate word(s).
____ strength is the property of a material to resist being crushed.
A. Shear B. Torsional C. Ultimate D. Compressive
The letters CADD refer to:
a. computer-aided print and design b. computer-assisted design and print c. computer-aided design and drafting d. common applications for print and distribution