Pipe & Excavation

Question 1

The advantage of an U blade over an Semi-U blade is it:

Answer 1

Holds more material

Question 2

The best piece of equipment to strip material over a long distance is a:

Answer 2

Scraper

Question 3

What is the purpose of a trench box?

Answer 3

To support a wall of soil

Question 4

When positioning a trench box it is always centered over the pipe. To maintain safety in the ditch, the maximum height above the pipe you should install a trench box is:

Answer 4

5 feet

Question 5

The easiest type of rock to rip is:

Answer 5

Sedimentary

Question 6

The percent of a slope which rises at a 45-degree angle is:

Answer 6

100 %

Question 7

A reference stake is 16.4” from the hub. Fill is to be stated at a distance of 6.8” from the hub. Distances are measured how?

Answer 7

Horizontally

Question 8

Before making a pass, what should the dozer be aligned with?

Answer 8

Blade dump area

Question 9

The level of underground water is called:

Answer 9

Water table

Question 10

Soil that has the maximum amount of water it can hold is called:

Answer 10

Saturated soil

Question 11

Slot dozing has what advantage?

Answer 11

It helps transfer more soil

Question 12

What is the best piece of equipment to dig a trench in soft soil?

Answer 12

Tracked backhoe

Question 13

What is the problem with excavation in narrow spaces?

Answer 13

You cannot easily add water necessary for wetting

Question 14

The best method to use to estimate earthwork is to:

Answer 14

Divide into sections

Question 15

What will increase the productivity of a self-loading scraper in muddy soil?

Answer 15

A dozer pushing on the push blocks at the rear of the bowl

Question 16

The effect of loading uphill using a scraper is:

Answer 16

It increases cycle time

Question 17

What is the hardest part of the grader’s work?

Answer 17

Finish blading

Question 18

The advantage to using an angle blade over a straight blade is to:

Answer 18

Sidecast materials

Question 19

The type of blade preferred when pushing soil over long distances is:

Answer 19

U Shaped

Question 20

What is the best dozer to use for landscaping?

Answer 20

Light utility dozer

Question 21

If an operator fails to lift, tilt, and angle the blade of a dozer just right:

Answer 21

Most of the load is lost

Question 22

The amount of water required for a given soil to reach maximum density is known as the:

Answer 22

Optimum moisture content

Question 23

The advantage of nuclear compaction testing is:

Answer 23

You do not have to remove the soil from the site

Question 24

If you are working a job that has silt or clay soil that has become saturated and compaction is an issue, what should you do?

Answer 24

Haul it away and replace it with dry soil

Question 25

What do contour lines show?

Answer 25

They connect points of the same elevation above or below a reference

Question 26

Load factor =

Answer 26

Bank volume divided by bank volume + swell factor

Question 27

The best piece of vibratory compaction equipment in situations where you have a wide trench and no cross-lines is:

Answer 27

Sheepsfoot roller

Question 28

Horizontal distances are measured with a:

Answer 28

Tape measure

Question 29

A well-point system is the best method for dewatering in:

Answer 29

Sandy soils

Question 30

What is the easiest method for compaction?

Answer 30

Puddling

Question 31

What is the normal range of speed for dozing?

Answer 31

1.5 to 4 MPH

Question 32

A downhill slope is a:

Answer 32

Negative grade

Question 33

Which of the below would increase the dozer's blade capacity when moving materials?

Answer 33

Negative grading

Question 34

You are excavating an area 245 feet by 350 feet; the equipment can remove 100 cubic yards per hour. If you need 6 inches of grade cut off the whole area, how many hours would it take?

Answer 34

15.88 hours

Question 35

What type of equipment should be used to dig a trench in soft soil?

Answer 35

Tracked excavator

Question 36

A parking lot is 140 feet wide, and it slopes 1/8th inch per foot. The highest elevation is 80 feet. What is lowest elevation?

Answer 36

78.54 feet

Question 37

What is the definition of a benchmark?

Answer 37

A fixed reference point of laying out a building

Question 38

How many feet are there between surveying stations that read 1 + 50?

Answer 38

150 feet

Question 39

You are checking elevations in an excavated area. There are 3 stakes set called A, B, and C. The A stake is labeled 3’4”, the B stake is labeled 4’10” and the C stake is labeled 7’2”. What is the difference between stake A and C?

Answer 39

3’10”

Question 40

A reference stake has 13’8” and F 8’3” written on it, what does the 13’8” mean?

Answer 40

13’8” from the edge of the fill area

Question 41

An effective way of moving materials a short distance downhill is:

Answer 41

A Tracked loader

Question 42

What is the calculation for production trenching / moving dirt in a backhoe set?

Answer 42

Divide volume of dirt by dirt moved in cycle

Question 43

What is the best method to estimate earth work on irregular ground?

Answer 43

Divide the plan into grids or sections

Question 44

What is the best method for hauling dirt over a long distance?

Answer 44

Self-loading scraper or loader and truck

Question 45

What is the best method for compacting sand and gravel?

Answer 45

Puddling and vibration

Question 46

Which of the below would be used for excavating shallow trenches with cross lines?

Answer 46

Wheeled / Rubber tire backhoe

Question 47

In what direction does the shock wave of an explosion travel?

Answer 47

The path of least resistance

Question 48

What is a hub?

Answer 48

A small stake driven into the ground to identify some reference point.

Question 49

What is driven into the ground near the hub?

Answer 49

A reference stake.

Question 50

If the reference stake shows only a station number where can the reference data be located?

Answer 50

The information that is normally on a reference stake itself will be on the “Cut Sheet”.

Question 51

What is a cut sheet?

Answer 51

A form showing elevations, cuts, and horizontal distances to a fixed point.