SM 103 LATTC Calculus Material Calculations Questions

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NAME____________________
DUE: TUES. 11/8/2022
SHOW ALL WORK ELSE NO
PARTIAL CREDIT WILL BE
GIVEN.
__
SM 103
DATE____________________________
FALL 2022
HOMEWORK ASSIGNMENT #3
Material Calculations
(5 problems, 20 points each, 100 points total maximum)
1. The project assigned to you has a number of base failures that must be mined up. Your
lead person informs you the estimate for performing FDR involves removal of 1,500
feet by 30 feet by 8 inches of existing street. How long do you estimate the work will
take if the crew can only remove and replace 350 tons of material per day?
2. How many tons of asphalt will you need to complete the work in Problem 1 above if the
new pavement thickness is 4 inches?
3. How many cubic yards of base material is needed for Problem No. 1?
4. You¥ in charge of a cold milling crew. You¥ been assigned three projects:
a. ABC Avenue: 1,200 feet by 18 feet
b. XYZ Lane: 750 feet by 10 feet
c. LMNOP Boulevard: 4,800 feet by 64 feet
For each street calculate the following:
umber of square feet to be profiled
umber of trucks needed to haul away the cold millings assuming the
profiled depth is 2 inches
umber of working days needed assuming average crew production is
45,000 square feet per day
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2
5. You¥ been tasked to manage the cold milling stockpile and instructed to keep the
stockpile to no more than 10 feet high. You inspect the current stockpile and the
equipment operator on site estimates the following:
13(igh
507ide
xtends 3504o the rear of the yard
You see the top of the stockpile appears as a peak.
Answer the following:
a) How many tons are in the current stockpile?
b) Option 1: How many truckloads will you need to remove the lower the stockpile
to the maximum height?
c) Option 2: If you widen the base, is it possible to lower the stockpile height
without removing material?
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6. EXTRA CREDIT (5 points): Back to Problem No. 5, how many days would it take to
completely remove the stockpile assuming you are able to utilize 5 trucks (each one
carrying 10 cy or 15 tons of material, and can make 3 round trips each daily)?
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