UTB5 Piping System Layout and Plumbing Accessories Flashcards
What term as applied to plumbing and pipe fitting, is a term used for the installation of concealed piping and fittings at the time a building is being constructed or remodeled? (Page 5-1)
Roughing-in
In setting the wall-mounted urinal, see that the rough-in of the waste pipe is at the correct height so after installation the urinal is within reach of the user. The lip of the urinal should be how many inches from the floor? (Page 5-7)
20-25
What is equipped with running cold and hot water and is used for bathing external genitals and posterior parts of the body? (Page 5-8)
Bidet
All types of drinking fountains should be installed with the orifice located from 30 to how many inches above the floor, depending upon the general height of the users? (Page 5-18)
40
What are used to carry contaminated water to the sanitary or storm sewer? (Page 5-18)
Floor drains
Most code requirements do not require floor drains to be vented if they are installed within how many feet of a vented drainage pipe line? (Page 5-19)
25
What helps remove loose organic solids and sand or grit deposits from sewers? (Page 5-33)
Flushing
Excavations over how many feet must be shored and ladders provided under safety requirements for excavation, building, and construction? (Page 5-36)
5
When acids are used in working on piping, see that they are kept in only glass or what type of containers? (Page 5-38)
Lead
When removing pipe, work from the top end of the pile as much as possible. Pipe larger than how many inches in diameter should be handled by means of a hardwood pipe stick? (Page 5-40)
2
By what part should you initially remove surveying equipment from the carrying case?
Legs
How many sliding portions does a Philadelphia rod have?
2
Which of the following valves allows water flow in one direction only?
Check valve
Which of the following types of pipe insulation has excellent weather-aging qualities?
Flex rubber insulation
The engineer’s level is also referred to as what kind of level?
Dumpy
How are the vertical cross hairs brought into exact alignment on the target?
By rotating the azimuth tangent screw
When the hand level is used, the reflector inside the sighting tube is set at what degrees?
45 degree angle
For a level to function accurately, the level must provide what type of line of sight in any direction?
Horizontal
When you turn the left thumbscrew counterclockwise on a level, the bubble inside the vial will move in what direction?
Towards your right hand
Leveling rods are used to measure vertical distance, which is the difference in elevation between a required point and what other requirement?
Line of sight
The Philadelphia rod can be extended to what total length in feet?
13.10’
When both sections of the Philadelphia rod are entirely closed, what is the total length of the rod in feet?
7.10’
What color are the even-foot numeral markers on a Philadelphia rod?
Red
What readings are possible when using the vernier scale and dumpy rod target?
Thousandths of a foot
Which of the following is NOT a reason for target reading, vice a direct reading approach? A. When the instrumentman wants to ensure an accurate reading B. When a reading to the nearest 0.0001 foot is desired C. When the rodman recommends the target reading D. When the rod is too far from the level to be read
C. When the rodman recommends the target reading
When is a rod reading accurate?
Rod is perfectly plumb at the time of the reading.
How many spirit vials are associated with the vial rod level?
2
What is the coloring scheme on all rods?
Painted white with graduation marks painted black
The large numeral values on the rod represent whole feet; what do the small numerical values painted black represent?
Hundredths of a foot
What term is used for a permanent object, natural or artificial, bearing a marked point whose elevation is known?
Bench mark
If no frost is expected before surveying and construction commence, what type of TBMs are allowed?
Stakes
Monument bench marks on permanent military installations are established in what type of system?
Grid system, 1/2 mile apart from each other
Tide stations associated bench marks are classified two ways, primary and secondary; what observation period, in years, is required prior to a tide station being designated primary?
19 years or more
What is the most common type of mistake associated with surveying operations?
Level that is out of adjustment
(True or False) For underground utility construction, you need only to stake out the line; determining the grade of the piping is not necessary.
False
What is used to transfer the grade from the sighting cord to the pipe?
Grade pole
Which of the following is NOT presented on the plan and profile sheet? A. Horizontal line located in each system B. Invert elevation at each fitting C. Horizontal location of each fitting D. Azimuth of each piece of equipment in each system
D. Azimuth of each piece of equipment in each system
The crowfoot symbol located on the centerline stake represents what reference point?
Vertical grade
What is the distance in feet between stakes and hubs?
25 foot intervals
At what distance in feet are sewer hubs offset from the centerline?
8 feet
Where can the percentage of drop value of a sewer hub be located?
Plan and profile sheets
What type of valve is used where a straight flow of water with the least amount of restriction is needed?
Gate valve
What distinguishes one type of globe valve from another?
Internal structure of valve
What valve is ideal when frequent throttling operations are required?
Globe
In which of the following types of globe valves are the inlet and outlet openings in line with each other?
Straight type
What type of valve is used as a stop valve on the suction side of a fire room pump?
Globe valve
What material is provided to form a positive seal around the stem if the seal formed by the seat is damaged on a butterfly valve?
Packing
What happens to the altitude valve if the pressure in the distribution system drops below normal working pressure?
Automatically opens
When operating a ball valve, you notice the handle is in line with the piping; what position is the valve in?
Open
Brass ball valves are used in which of the following applications?
Water service lines
What happens to the position of the check valve if the pressure on the inlet side is greater than that on the outlet side?
Opens automatically
Which type of check valve is used in horizontal lines?
Swing check valves
Which type of valve is used to maintain pressure lower than supply pressure?
Pressure reducing
In what direction is the diaphragm inside the pressure reducing valve forced if the discharge pressure is greater than the spring pressure?
Up
How is the amount of spring pressure reduced on a pressure-reducing valve?
By turning the adjusting screw counterclockwise
At what percentage above the set pressure will the pressure relief valve fully open?
20%
(True or False) The hydraulic control valve is normally held in the closed position by both the diaphragm force and by fire main pressure acting against the disk.
True
How often is maintenance of valve boxes conducted?
Twice a year
Gear boxes are inspected at what interval?
Semi-annually
Where are the position indicators located on the non-rising stem gate valve?
Floor stand
What is the result of installing a valve stem upside down?
Sediment collects in valve handle.
Which of the following methods determines visually whether or not the seat and disk make good contact?
Spotting-in
(True or False) Spotting-in is NOT required for conduct at the completion of the grinding-in method.
False
What method is required at the completion of the lapping method?
Spotting-in and Grinding-in
Which compound grade is utilized for finish lapping?
Fine
Which type of water volume meter is used with pipe less than 1 1/2 inches in diameter?
Disk
Where is the water meter located?
Near the pressure-reducing valve
How many different types of meter dials are used?
2
In the circular-reading dial, when the hand on a scale is between two numbers, which number is read?
lower
What is the primary purpose for insulation of piping?
Prevent heat passage from steam piping to outside air.
Of the two types of insulation used with heating ducts, what is the purpose of the inside insulation?
Reduce vibration
Rigid preformed sections of insulation are used on what type of equipment?
Pipe runs
Which type of insulation is ideal covering for ice water piping?
Cork pipe covering
What type of base primer is used to prevent corrosion caused by condensation?
Asphaltic
Antisweat insulation is designed for which type of piping?
cold water pipes
How many layers compose the antisweat insulation sheeting?
6
How thick is frost-proof insulation?
1-1/4 inch
When wire mesh is utilized as a covering base, what is the distance in inches from the piping that needs to be maintained?
1”
What distribution element is used to carry water from a treatment center to the users?
Distribution mains
(True or False) Mains can be located under paved roads.
False
In the construction of long water supply lines, at what intervals, in feet, should shutoff valves be placed?
Not greater than 5,000
How many feet from a building should fire hydrants be located?
50 feet
Hydrants should not be placed more than how many feet from the edge of a paved roadway?
7 feet
Hydrants should not be placed closer than how many feet from the front of any entranceway?
3 feet
The operating nut for a fire hydrant should not be placed more than how many feet above the surrounding grade of the land?
4 feet
In mass parking and maintenance areas, the tops of the fire hydrants must not be higher than how many inches above the ground?
24”
