Explain the difference between air entrainment and air entrapment in concrete.
What will be an ideal response?
Air entrainment is a deliberate process obtained through the use of a chemical admixture that introduces microscopic voids in concrete. Air entrapment is unintended voids due to lack of consolidation of concrete. Entrapped voids are much larger than entrained voids.
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Estimate evapotranspiration rates in:
What will be an ideal response?
The Gap has some of its jeans stone-washed under a contract with Vietnam Garment Corporation (VGC). If VGC’s estimated operating cost per machine is $26,000 for year 1 and it increases by $1500 per year through year 5, the equivalent uniform annual cost per machine over years 1 to 5, at an interest rate of 8% per year, is closest to:
(a) $30,850 (b) $28,770 (c) $26,930 (d) $23,670
Slash marks through the circuit lines are used to indicate the number of ___________.
A. electical lines B. conductors C. ground wires D. exposed wires
While in hiding in the castle of Wartburg in Saxony, Luther worked on a new translation of the
a. Old Testament. b. Ninety-Five Theses. c. Babylonian Captivity of the Church. d. New Testament.