LESSON
PRACTICE EXERCISE
ANSWER KEY AND FEEDBACK
1.
Determine the mixer output (in cubic FPH) if the mixer capacity is 16 cubic feet, batch
time is 3 minutes, and the three mixers will be operating for 1 hour.
A.
960 (step 2)
B.
840
C.
3,200
D.
7,400
2.
Determine the plan area for a concrete wall form that is 140 feet long, 5 feet high, and
18 inches thick.
A.
140
B.
180
C.
210 (step 3)
D.
250
3.
Determine the rate of placing, in FPH.
A.
3.8
B.
4.6 (step 4)
C.
5.0
D.
5.6
4.
Determine the concrete placing temperature.
A.
60
B.
70
C.
80 (Problem 1 statement and step 5)
D.
90
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