Horizontal Engineering Exam Review (EBOLC)

___________ 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