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WorksheetsHorizontal Engineering Exam Review (EBOLC)
Total questions: 20
Worksheet time: 2hrs 40mins
___________ is the ability of a soil to support the weight of vehicles under repeated traffic.
Loadability
Trafficability
Liquid Limit
CBR
If a ditch has a depth of 4.5 feet and a slope ratio of 1:1, determine its cross-sectional area.
20.25 sq ft
4.5 sq ft
21 sq ft
5 sq ft
Calculate the flow rate for a ditch with a cross-sectional area of 29.134 sq ft and a velocity of 2.631 ft/s
1 cfs
76.652 cfs
77 cfs
.601 cfs
Calculate the Hydraulic Radius of a ditch with a depth of 1.7 ft and a slope ratio of 1:1.
2.89 ft
1 ft
.601 ft
1.7 ft
A ditch is 560 feet long. It takes an object 620 seconds to float. Determine the water's velocity.
350,000 fps
.602 fps
347,200 fps
.903 fps
_______ is a measure of the difficulty in excavating soil.
Loadability
Liquid Limit
Trafficability
CBR
GM stands for what type of soil?
Well graded gravel
Poorly graded gravel
Silty sand
Silty gravel
A soil's plastic limit is defined as the moisture content in percent at which it begins to crumble when rolled.
True
False
How much material is in a planned trench 24 inches wide, 84 inches deep, and 300 feet long?
156 BCY
4200 BCY
4200 LCY
156 LCY
A dozer can self-load, haul, and spread soil.
True
False
Calculate the return travel time for a scraper traveling at 13.2 mph for 32,748 feet.
29 mins
28 mins
28.192 mins
2,480.909 mins
The use of a 48 inch pipe with a FC value of 2.1 feet and a CR value of 3 feet is acceptable.
True
False
Calculate how many trips per hour (TPH) a scraper can make in 45 mins with a cycle time of 10.874 mins.
5 trips
4.138 trips
9 trips
8.156 trips
Estimate the hourly production of an 18 LCY scraper that can make 9.536 trips per hour.
172 LCY/hr
171 LCY/hr
172.648 LCY/hr
171.648 LCY/hr
A 12 LCY load weighs 2,540 lbs/lcy. How many tons is the load?
9.449 tons
13.252 tons
1.27 tons
15.24 tons
A 9 LCY dump would need to make how many trips to haul 300 LCY of gravel?
33.333 trips
34 trips
32 trips
31.354 trips
A 19 LCY dump truck with a 5.3 min cycle time would haul 434 LCY in how many hours?
2 hours
3 hours
5 hours
4 hours
What's the hourly production of a sheep's foot compactor operating on ML, a width of 6 feet, efficiency of 0.547
97 CCY/hr
96.294 CCY/hr
53.497 CCY/hr
54 CCY/hr
Using a 5 LCY wheel loader to load moist loam, calculate its ideal production rate.
600 LCY/hr
500 LCY/hr
499.8 LCY/hr
599.824 LCY/hr
An earthwork volume sheet is necessary to create what?
A mass diagram
A daily schedule
A construction bid
Scope of Work
