Practical Problems 2.1

50問 • 13日前

問題一覧

As an experienced registered master plumber, what will be the ideal size of the P-trap that should be installed underground or embedded on a concrete slab?

100mm

A 100 mm & 3.0 m plastic pipe is used to install in house drainage. The face-to. face distance is 4.40 meters. The engagement length is 45 mm and the solvent cement per joint requires is 16 g. What is the amount of solvent in grams?

What condition must be satisfied for the water supply in building?

Fast removal of the waste with a minimum probability of leakage and stoppage of drain

Each fixture in the plumbing system represents a certain demand for water, what Is the water demand of the wall hydrant?

8 gpm

Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the bathtub faucet?

4 gpm

Each fixture in the plumbing system represents a certain demand for water, what is the water demänd of a shower head?

4 gpm

Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the sink faucet?

3 gpm

Each fixture in the plumbing system represents a certain demand for water, what is the water demand of the drinking fountain?

3/4

What is the name of that piece of pipe less than 12 inches in the length threaded on both sides?

Nipple

What do you call that short pipe whose thread at both ends meet?

Close nipple

What do you call that pipe whose thread at both ends leaves a small amount of space?

Short pipe

What is the minimum nominal diameter of a water service line pipe which wm provide the building with water requirements during peak

3/4 inch

What is the tin content in a brass fitting?

What is the zinc content in a brass fitting?

What is the copper content in a brass fitting?

85%

A 25 mm diameter water pipe can carry water equivalent to how many 12 mm diameter water pipe?

The recommended fall per foot for a 4 in pipe and larger due to impractical depth is ____.

1/8 in per foot

The recommended fall per foot for a 3 in pipe and larger is ___.

1/4 in per foot

In roughing-in for lavatory that is to have an 1-½ in drain, the distance between the fixture trap and the vent is not more than ___.

3’-0”

What is the maximum depth of trench for subsurface drain tile where the soil is to satisfactory absorption?

2’-1”

Each fixture in the plumbing system represents a certain demand for water. What is the water demand of the water closet tank ballcock?

3 gpm

Which type of fire line installation has become obsolete and is seldom used?

Dry standpipe

Generally, what is the standard diameter of the standpipe for buildings two or three stories in height?

4 in.

Generally, what is the standard diameter of the standpipe for buildings more than six stories in height?Generally, what is the standard diameter of the standpipe for buildings more than six stories in height?

6 in.

Why is a wet standpipe with Siamese connection considered most practical?

It is being served by the domestic water supply under constant pressure.

What is the disadvantage of the wet standpipe with Siamese connection?

The danger of contamination of the building water supply from the unknown source.

What is the most practical method of repairing or correcting leak of a plastic pipe?

Cut and insert coupling

Careful installation of the water supply distribution is essential. Which statement differs among the group?

Short offset and unnecessary fittings

Damage to property leaking points, trapped piping and water hammer in a water system are attributed to ___.

Poor workmanship

In what ways must the water distribution system be suspended from the basement ceiling in large concrete buildings?

Iron inserted on the tough floor sheating and slushed into the concrete slab

What is that it is not good practice to use a gate valve on a lawn sprinkler?

It will fail to close tightly.

Why must basement water supply must be properly graded and aligned?

It is convenient to provide a drum valve to make it possible to drain the entire water system.

Where should gate valve be used?

In between the main supply line and pump line.

What is the recommended distance above the flood level rim of a unit for a vacuum breaker to be installed?

6 in.

In what instances that a mechanical drainage will be used?

Drainage cannot be affected by gravity.

What kind of pipe usually used as leaders in tall buildings?

Wrought iron pipe.

What will be the best kind of pipe for underground drains within the buildings?

Cast iropn pipe

The drainage system in the building should be designed, constructed and maintained as to guard against fouling, deposits of solids and clogging. What feature should be provided to make maintenance efficient and effective?

Adequate cleanouts

Why is rainwater leaders are often not included as part of the sanitary drainage system?

Excessive rainwater hinders the treatment of the sewage.

Which word does not apply to the plumbing system?

Smoke tight

If a plumbing plan scaled as 1:10,000, then 10 cm * 20 cm catchment area in the plan is equal to ___m^3 of rainfall in actual for every hour? Assume 100mm/hr rain intensity

200,000m^3

What is the shape for the signage for the signage for women's comfort room; order to aid visually impaited women readily determine whether a washroom is for men or women?

Circle

A fire sprinkler head has a k-factor of 7.6. What is the flow rate at 15 psi?

29.4

All valves controlling the supply of a fire sprinkler system should be:

Indicating

Where practical, all pipes from fixtures shall be run in what direction with respect to the nearest wall or building line?

Parallel

By regulation, the minimum design pressure in distribution system is?

30 psi

Are there major difference between sewer and septic system in your home?

None of the above

Minimum height if Shower head.

1.78m

What is the number one reason why pumps cavitate?

Low pressure

What is the lead content in a brass fitting.

YT1 Materials Engineer EXAM

ユーザ名非公開 · 100問 · 13日前

YT1 Materials Engineer EXAM