plumbing help practice ip questions

You are required to use a 20 foot ladder placed up against a building that is 40' high. At what horizontal distance from the base of the building must the ladder be?

5' 4:1 rule

Confined spaces are hazardous environments because they usually have:

restricted access and egress

Scaffolding erected_______ feet above the ground must have guard rails.

10'

Class "A" fire extinguishers are used on and contain

Combustible materials, Water

When using a Hilti powder actuated fastening tool, the device fails to fire when the trigger is pulled. The first thing you should do is?

keep the tool in position and wait 30 seconds

How many 2" pipes does it take to equal the volume capacity of a 6" pipe?

9

When using oxy-fuel cutting and welding equipment, a flashback arrestor protects the operator from?

flame traveling into the hoses

Horizontally run ô" type M copper pipe must be supported every:

2.5 meters

Water that is determined to have a PH of 5.5 would be considered:

mildly acidic

Copper tube permitted for underground water distribution.

type k soft

Which is not an approved method for joining cast iron waste pipe:

welded joint

Dielectric unions are used to

prevent corrosion

When installing glass piping; if one end needs to be field cut, the ends should be joined:

bead to plain

Bell and spigot cast iron is installed with the:

bell upstream

What force would be exerted on the gate of a closed 6" gate valve if the water pressure acting on it measured 46 Psig.

1300 - area of the gate x psi

Asbestos cement pipe installed below a 60 mm thick concrete floor must be at least how deep?

600mm

What is the maximum practical lift of a shallow well jet pump?

25'

A backwater valve may be installed in a building drain provided that it is

normally open

The discharge from a sump pump shall have the following fittings installed in order, in the direction of flow:

union, check valve, shut-off valve

When a well pump turns on as soon as a faucet is used the most likely problem is:

water logged pressure tank

A 4" cast iron pipe with 1" insulation is to pass through a wall. How large a diameter hole is required to be cut?

4" pipe + pipe wall thickness ½" + 2" insulation = 6.5"

A gear pump is a positive displacement pump and must be installed with a:

pressure relief valve

What type of trap is not permitted in a drainage system:

bell trap

Where is the jet located in a deep well?

above the foot valve

How would you increase the length of flush on a flushometer?

turn regulating screw clockwise

Six equally spaced lav's are to be installed along a wall that is 530 cm long and will be vented with dual vents. Determine the center to center distance between vents if the fixtures are each 51 cm wide.

166cm

A drainage pipe suspended from a ceiling inside a building at it most upstream end is 7.5" from the ceiling to the center of the pipe. What will the measurement be from the ceiling to the center of the pipe if it travels 26 feet horizontally, has an 8 foot horizontal offset then continues another 37 feet.

25.25"

What is the minimum length of a trap arm?

2 pipe diameters

A branch with 34 fixture units discharges into a sewage sump. What is the minimum size vent required for the sump?

3"

What is the maximum vertical fall of a water closet trap arm?

1m

A building's roof measuring 90m by 50m would require how many flow controlled roof drains?

6

A flat roof measuring 20m by 26m with a horizontal wall on one side extended up 6m by 20m. Size the circular rain water leader if the local 15 minute rain fall intensity is 24mm.

6"

A laboratory sink that receives bio-hazardous waste must be installed with a:

cleanout above the flood level rim

The absorption rate of a septic field is determined by:

percolation test

Medical gas piping is most often joined by

compression joints

A circuit vented branch with a horizontal offset that uses two 45º fittings will require a:

additional circuit vent

Determine the amount of expansion that will occur when a 15m ABS pipe has a temperature change of 40ºC

54mm

Which backflow preventer is not a testable device?

DCAP

. Find the length of pipe "D" if (A=50mm, R=150mm, C=1400mm, E=30mm)

1087.2mm

The image above shows a 45º rolling offset. Find the length of pipe "C".

46.58"

A properly cut thread on black iron pipe should allow how many hand turns with a fitting?

3 1/2

A well with a water tight casing requires a minimum standoff distance from a septic system of:

15m

An air conditioner that discharges 0.05 L/s of condensate into a floor drain, would equate to how many fixture units?

2

An interceptor may act as a trap for a fixture provided that:

it has a 38mm water seal

. Underground piping installed in a dug trench should be covered with appropriate backfill to a height of:

300mm

Which is not a hot water heating piping system:

one pipe gravity return

The ideal location for a circulator pump installed in a hot water heating system is:

on the supply after the expansion tank

A pipe that connects at its downstream end to two or more vent pipes and at its upper end to a vent stack or stack vent is a:

branch vent

A horizontal cylindrical tank measuring 60cm in diameter and 150cm in length is partially filled with water to a height of 48cm. Find the volume of water

364L

When determining the location to install a condensing boiler what must be considered?

near a floor drain

The discharge piping from a service water heater's temperature and pressure relief valve must discharge within _______ of a floor drain or suitable area.

300mm

. Length is not a consideration when sizing this vent:

relief vent

A cross fitting may not be used in a DWV system except to connect:

four vents

A ½" extracted tee may be formed from:

3/4" Type K

If four shower heads are installed along a wall, what would the minimum measurement be between the two outermost heads?

2.25m

The minimum size for vents serving an oil interceptor are:

1 1/4"

A four wire zone valve is wired to

thermostat, transformer, end switches

Which of the following fixtures may not be indirectly connected to a drainage system:

commercial dishwasher

The minimum size for mobile home service connections are

4" sewer, 3/4" water

A pressure reducing valve must be installed if the water service pressure is above

80 psi (550 Kpa)

A twin tank water softener will house the brine in one tank and the other tank will house the:

zeolite

Where should you locate a fin tube radiator within a room?

under a window

Water that has a dissolved mineral content of >181 mg/L would be deemed"

very hard

A private water supplied cistern is fitted with a ô" make-up water pipe supplied by a municipal system. What size air gap would be required:

1 1/2"

If the center to center measurement of pipe "A" is 8' 6"(2590mm) dimension "B" would be:

12' 1/4" (3662mm)

. A ô" cold water branch with a developed length of 6.5m could supply how many public use showers?

4

The abbreviation NPS refers to:

pipe size

What is the maximum horizontal offset permitted in a 3" soil or waste stack that is serving as a wet vent?

2.5m

Which manufacturing method produces the strongest pipe:

extruded

A toilet seat used in a public washroom must be:

elongated open front type

the base of every soil or waste stack must have

clean out and expansion joint

the minimum size of a wet vent serving a water closet is

2"

a section of ____________ branch may be circuit vented

horizontal

the minimum size of a fresh air inlet for a building trap is

4"

the minimum size of a future vent in a basement is

1 1/2"

the minimum diameter of a trap on a floor drain that does not require venting is

3"

a yoke vent is connected to a 2" branch and a 3" vent stack, the yoke vent is sized at

1 1/2"

an offset relief vent is being utilized within a buildings DWV system. The base of the stack is 6" in diameter and the stack vent is 3" in size. The offset relief vent will be sized at

2"