A project to move packed earth requires you to decide whether to use a dozer/scraper operation or excavator/truck operation. Determine the most economical operation based on the dozer/scraper operation estimated at $1.25/cy. All equipment carries a rated heaped capacity, has a fill factor of 100%, and works 45-min hours. Excavator costs $95/hr (including operator), cycle time is 0.28 min, and bucket heaped capacity is 5.0 cy. Truck costs $150/hr (including operator), dump time is 0.5 min (maneuver, dump, turn), heaped capacity is 31.7 cy, and 12 trucks are available for the project. Hauling equipment operates in one direction from A to B to C and finally to D. Section ABCD Load full full empty empty Length (ft) 3,000 2,500 3,000 3,000 Speed (mph) 9 17 36 16

A project to move packed earth requires you to decide whether to use a dozer/scraper operation or excavator/truck operation. Determine the most economical operation based on the dozer/scraper operation estimated at $1.25/cy. All equipment carries a rated heaped capacity, has a fill factor of 100%, and works 45-min hours. Excavator costs $95/hr (including operator), cycle time is 0.28 min, and bucket heaped capacity is 5.0 cy. Truck costs $150/hr (including operator), dump time is 0.5 min (maneuver, dump, turn), heaped capacity is 31.7 cy, and 12 trucks are available for the project. Hauling equipment operates in one direction from A to B to C and finally to D. Section ABCD Load full full empty empty Length (ft) 3,000 2,500 3,000 3,000 Speed (mph) 9 17 36 16

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Question

A project to move packed earth requires you to decide whether to use
a dozer/scraper operation or excavator/truck operation. Determine
the most economical operation based on the dozer/scraper operation
estimated at $1.25/cy. All equipment carries a rated heaped capacity, has
a fill factor of 100%, and works 45-min hours. Excavator costs $95/hr
(including operator), cycle time is 0.28 min, and bucket heaped capacity
is 5.0 cy. Truck costs $150/hr (including operator), dump time is 0.5 min
(maneuver, dump, turn), heaped capacity is 31.7 cy, and 12 trucks are
available for the project. Hauling equipment operates in one direction
from A to B to C and finally to D.
Section
ABCD
Load
full
full
empty
empty
Length (ft)
3,000
2,500
3,000
3,000
Speed (mph)
9
17
36
16

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