gross weight 37,800 Ib Empty vehicle weight 10,800 lb Неарed capacity 12 yd 10 yd Struck capacity Haul time to dump area, including load, haul, return, and dump times 17 min Delay time 5 min/hr ne soil has the following characteristics: Bank density Loose density 110 pcf 100 pcf

gross weight 37,800 Ib Empty vehicle weight 10,800 lb Неарed capacity 12 yd 10 yd Struck capacity Haul time to dump area, including load, haul, return, and dump times 17 min Delay time 5 min/hr ne soil has the following characteristics: Bank density Loose density 110 pcf 100 pcf

Fundamentals Of Construction Estimating

4th Edition

ISBN:9781337399395

Author:Pratt, David J.

Publisher:Pratt, David J.

Chapter10: Pricing Excavation And Backfill

Section: Chapter Questions

Problem 7RQ

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Concept explainers

Pricing Excavation and Backfill

Backfill, in construction, is the activity of returning the soil and gravel that are removed during building construction or using them again to toughen and support the foundation of the building or any other structural component.

Question

A truck is hauling earth from a construction site. The truck has the following specifications:
Maximum allowable gross vehicle weight
37,800 lb
Empty vehicle weight
10,800 lb
Heaped capacity
12 yd
10 yd
Struck capacity
Haul time to dump area, including
load, haul, return, and dump times
17 min
Delay time
5 min/hr
The soil has the following characteristics:
Bank density
Loose density
110 pcf
100 pcf
The productivity, in bank measure (yd/hr), of this operation is most nearly:
38.8
(В)
(C)
(D)
35.3
32.3
29.5

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