Municipal & Public Works

Question 1

Concrete curing procedures and curing compounds should be applied:

Answer 1

After final finishing as soon as the concrete surface is dry

Question 2

Underground conductors for communication circuits entering a manhole that also contains light and power conductors:

Answer 2

Must be separated from the light and power conductors by a brick tile or concrete partition

Question 3

Overhead data communications conductors are to be run between two buildings parallel to and below electrical power conductors. What minimum separation must be maintained between the two sets of conductors?

Answer 3

12”

Question 4

A typical traffic weight manhole cover is how many inches in diameter?

Answer 4

12”

Question 5

Where practical, a separation of at least how many feet shall be maintained between communications wires and cables on buildings and lightning conductors?

Answer 5

6 feet

Question 6

What must a worker in the bottom of a bell hole be supplied with?

Answer 6

A lifeline and safety lanyard

Question 7

What is the percentage of cement in concrete?

Answer 7

7-15%

Question 8

What causes lung problems when sandblasting?

Answer 8

Crystalline silica

Question 9

If workers must pass under scaffolding what should be done prior to use?

Answer 9

Provide a screen between the toeboard and the guard rail, extending along the entire opening, consisting of number 18 gauge

Question 10

What is the best cleaning for a metal surface?

Answer 10

White blast

Question 11

If too much cut back asphalt is applied, what shall be done to prevent bleeding of the prime coat up through the asphalt concrete?

Answer 11

Blot the excess coat with sand.

Question 12

What do you do with rebar that sticks out horizontally from a wall for a future pour?

Answer 12

Cap the end to prevent impalement

Question 13

What is the proper barrier fence for an open hole?

Answer 13

42” with a mid-rail

Question 14

What is the schedule number used for carbon steel pipe 14” - 24”?

Answer 14

10-180

Question 15

What is used in a drinking water plant to trap solids?

Answer 15

Sand

Question 16

A benchmark is at an elevation of 35.11, cut invert is 17.35 height of the instrument is 4.07. What is the elevation of the invert?

Answer 16

21.83

35.11 + 4.07 +- 17.35 = 21.83
BM + Back Site - Front Site

Question 17

If you are installing a socket and spigot tee, you should cut the line ________

Answer 17

A little shorter than the tee

Question 18

When leveling equipment, it should be bolted and shimmed with what?

Answer 18

Metal shins

Question 19

If hazardous atmospheres could reasonably be expected to exist, atmospheres shall be tested at how many feet?

Answer 19

4’

Question 20

Class 4 lines shall be tested to how many times the Maximum Operating Pressure?

Answer 20

1.5

Question 21

The junction box for underground electrical in a tier 5 location would be used for what?

Answer 21

A sidewalk with occasional non-deliberate vehicular traffic

Question 22

According to OSHA, if a trench is unstable soil, the sides shall be sloped, shores, or braced if the trench is how many feet deep or more?

Answer 22

5

Question 23

OSHA regulations state that if the permit for a confined space is canceled, the record must be retained for how many years?

Answer 23

1 year

Question 24

What is true about a mechanical pipe joint?

Answer 24

The gasket should go on the socket end

Question 25

Blowoff valves are placed where?

Answer 25

On the low elevations or at dead ends of the system

Question 26

If employees are working in a building that has been damaged by fire, OSHA requires?

Answer 26

Walls or floors to be shored or braced

Question 27

A jeep tests for holidays in pipeline coatings using?

Answer 27

Electrical charge

Question 28

A tripod is being used for a rescue system for a confined space, however this system does not have a built in speed control. This will also require what?

Answer 28

A trained rescue team on site

Question 29

A small length of steel Water main has been damaged. The piece will be cut out and replaced, what would be the best to use?

Answer 29

MJ Sleeve

Question 30

What is the most stable bedding for underground telecommunications and electrical cable?

Answer 30

Sand

Question 31

What is used to avoid electrolysis between copper and other metals?

Answer 31

Dialectic union

Question 32

Overhead regulatory highway signs are placed a minimum of how many feet above the roadway?

Answer 32

17’

Question 33

What method of connecting a control valve box that will allow easy removal for maintenance?

Answer 33

Bolted gasketed connection

Question 34

What type of valve can be opened or closed quickly by lowering or raising a sliding stem?

Answer 34

Gate valve

Question 35

What would be used to keep copper from corroding when attached to a different metal?

Answer 35

Dielectic Union

Question 36

Water main piping is laid at what grade?

Answer 36

Even grade

Question 37

Which fire extinguisher is rated to handle wood, metal, or electrical fires?

Answer 37

Dry chemical

Question 38

When the nominal wall thickness of a pipe is not known, the pipe is measured at

Answer 38

1/4 points on one end

Question 39

When using cast iron pipe in the construction of a natural gas transportation line, each caulked bell and spigot joint

Answer 39

Must be sealed with mechanical leak clamps

Question 40

No welder may weld using a specific welding process unless the welder has been using that specific process within the last proceeding how many months?

Answer 40

6

Question 41

With concrete that contains an accelerant, when would curing compound be added?

Answer 41

While concrete is slightly dark

Question 42

A 1500 CY excavation needs to be filled. The material to be used has a 25% shrinkage factor. How many cubic yards will be needed?

Answer 42

2000 1500/.75

Question 43

When pouring a concrete wall using plywood forms, when would you remove the cone nut?

Answer 43

After removing the sheathing

Question 44

Spacers used for PVC underground electrical conduit power duct banks are made of?

Answer 44

Plastic

Question 45

Who establishes the weight of large equipment?

Answer 45

Manufacturer

Question 46

What test for welds would be used on a gas piping system?

Answer 46

Radiographic

Question 47

What is used to disinfect a new ductile iron water main?

Answer 47

Chlorine then flush

Question 48

When using LA One Call they will mark sewer gas and water lines from the edge of the property to

Answer 48

The construction stopping point

Question 49

What test is used for leak testing concrete pipe and manholes?

Answer 49

Hydrostatic

Question 50

A well point system is least effective in?

Answer 50

Clay

Question 51

What would be attached to the boom of a track hoe to demolish concrete?

Answer 51

Hydraulic breaker

Question 52

A valve box for a water distribution line would be found where?

Answer 52

In a larger above ground box

Question 53

What type of lubricant would be used on a gasketed pipe that will contain potable water?

Answer 53

AWWA/ANSI standard 60

Question 54

According to OSHA a crane operator certificate is valid for how long?

Answer 54

5 years

Question 55

At the beginning intake of a waste water treatment plant, what would be used to remove all large and floating debris?

Answer 55

Bar screen

Question 56

A Ph reading of 3.1 is considered

Answer 56

Acidic

Question 57

What type of fire extinguisher is approved for burning metals such as fire caused by welding?

Answer 57

D

Question 58

What is the minimum burial depth for a high-voltage line in IMC conduit under a parking lot?

Answer 58

24”

Question 59

What is the minimum slope for a trench with type C soil?

Answer 59

1 1/2:1

Question 60

Threaded taps in cast iron pipe without reinforcement is permitted up to a size of how many percent of the pipe diameter?

Answer 60

25%

Question 61

Most pipeline welding is done using

Answer 61

SMAW

Question 62

The standard used for pipeline weld quality is?

Answer 62

API 1104

Question 63

OSHA requires certification for operators of

Answer 63

Cranes

Question 64

Sewer and water mains that cross shall have a minimum vertical separation of how many inches?

Answer 64

18”

Question 65

When installed in parallel, sewer and water mains shall be laid not less than how many feet apart?

Answer 65

6’

Question 66

What bacteria is tested for when repairing potable water lines?

Answer 66

Coliform

Question 67

Pallets containing 15 pipes that are 8 feet long each are being delivered to the job site. The best placement of each pallet should be where?

Answer 67

The first pallet at 60 foot and then 120 foot apart

Question 68

A simple slope excavation 20 foot or less in type a soil shall have a maximum slope of

Answer 68

3/4:1

Question 69

A PH reading of ____ is neutral

Answer 69

7

Question 70

Which type of fire extinguisher is approved for an energized electrical equipment fire and flammable liquids?

Answer 70

Type BC

Question 71

Which type of valve allows flow in one direction only?

Answer 71

Check

Question 72

What are the standard dimensions of a rectangular manhole cover?

Answer 72

26” x 22”

Question 73

According to code, when water service piping is installed in the same trench as sewer piping, there must be a minimum separation of

Answer 73

12”

Question 74

A lift station is being built and boring logs sure water and sand at the invert elevation. What should be used to remove water from the excavation?

Answer 74

Well point