Pipe Materials and Connections Flashcards
ABS
Acrylonitrile-Butadiene-Styrene
PB
Polybutylene
PE
Polyethylene
What pipe is black in color, oval shaped, denoted by OD, and used as a water service connection from main to meter?
A. PVC
B. CPVC
C. PE
D. PB
D. PB
What pipe is black in color, circular shape, denoted by OD, but cannot be used for hot water system?
A. PVC
B. PE
C. PB
D. CPVC
B. PE
PVC
Polyvinyl Chloride
Blue PVC
Potable water piping
Gray, orange, or brown PVC
Drainpipes manufactured with toxic components
A ball-shaped end is held in a cuplike shell and allows movements in every direction (flexible)
A. Ball joint
B. Brazed joint
C. Float ball
D. Ballcock
A. Ball joint
Joining by a melted alloy higher than 449°C
A. Slip joint
B. Brazed joint
C. Soldered joint
D. Welded joint
B. Brazed joint
Jointing by a melted alloy between 149°c - 427°C
A. Slip joint
B. Brazed joint
C. Soldered joint
D. Welded joint
C. Soldered joint
Any joint or seam obtained by joining of metal parts in a plastic molten state
A. Slip joint
B. Brazed joint
C. Soldered joint
D. Welded joint
D. Welded joint
Plugging an opening with oakum, lead or other materials
A. Bell
B. Spigot
C. Oakum
D. Caulking
D. Caulking
Hemp or old hemp rope soaked in oil or tar to make it waterproof
A. Bell
B. Spigot
C. Oakum
D. Caulking
C. Oakum
Portion of a pipe which is sufficiently enlarged to receive the end of another pipe of the same diameter for the purpose of making a caulked or push-on joint
A. Bell / Hub
B. Spigot
C. Oakum
D. Caulking
A, Bell/Hub
CISP with plain ends connected by bolted stainless Steel bands and neoprene gasket
A. Standard pipe
B. Double hub
C. Hubless pipes
D. Single hub
C. Hubless pipes
An approved elastomeric gasket with an approved outer shield and a tightening mechanism
A. Bell / Hub
B. Spigot
C. Slip joint
D. Shielded coupling
D. Shielded coupling
An adjustable tubing connection consisting of a compression nut a friction ring, and a compression washer
A. Slip joint
B. Brazed joint
C. Soldered joint
D. Welded joint
A. Slip joint
What connection is used by hubless pipes?
A. Bell / Hub
B. Spigot
C. Slip joint
D. Shielded coupling
D. Shielded coupling
End of pipe which fits into the bell/hub
A. Bell / Hub
B. Spigot
C. Slip joint
D. Shielded coupling
B. Spigot
What seals caulked joints?
A. Bell / Hub
B. Spigot
C. Oakum
D. Lead
D. Lead
Can cast iron pipes be threaded?
A. Yes
B. No
C. Maybe
D. It depends
B. NO
Joint for bell & spigot cast iron pipes
A. Caulked joint
B. Brazed joint
C. Soldered joint
D. Welded joint
A. Caulked joint
CIP generally used for bldg installation
A. SV type
B. XV Type
C. PVC Type
D. UVPC type
A. SV Type
CIP extra duty pipe used for underground installation
A. SV type
B. XV Type
C. PVC Type
D. UVPC type
B. XV Type
Used for well-fitted hub & spigot connections
A. Standard pipe
B. Hubless pipe
C. Single Hub
D. Double Hub
A. Standard pipe
Recommended when the length of the pipe needed is more than 150 cm long wherein cutting is NOT necessary
A. Standard pipe
B. Hubless pipe
C. Single Hub
D. Double Hub
C. Single Hub
Preferred when a pipe needed is shorter than 150 cm long. when pipe is cut, both ends has hub to serve as joint connector
A. Standard pipe
B. Hubless pipe
C. Single Hub
D. Double Hub
D. Double Hub
How much is the depth of a molten pig lead?
A. 25.4mm
B. 3.2mm
C. 51 mm
D. 19 mm
A. 25.4 mm
How long is the maximum extension of the finished joint below the rim of the hub?
A. 25.4mm
B. 3.2mm
C. 51 mm
D. 19 mm
B. 3.2 mm
How long shall cast iron fittings be galvanized?
A. 25.4mm
B. 3.2mm
C. 51 mm
D. 19 mm
C. 51 mm
Used in pouring lead into hub until it is even with the top of the hub
A. Lead
B. Oakum
C. Ladle
D. Pipe
C. Ladle
What pipe is made from alloy of cast iron and silicon, chemical resistant, widely used in chemical laboratories, industries where acid wastes are being discharge?
A. Cast Iron Pipe
B. Acid Resistant Cast Iron Pipe
C. Asbestos Pipe
D. Lead Pipe
B. Acid Resistant Cast Iron Pipe
Pipe made of asbestos fibers and Portland cement. Superior for embedment in cement structure for having the same material properties
A. Cast Iron Pipe
B. Acid Resistant Cast Iron Pipe
C. Asbestos Pipe
D. Lead Pipe
C. Asbestos Pipe
Only allowed for repairs of existing asbestos pipe lines
A. Cement Mortar
B. Asbestos cement Sewer Pipe Joints
C. Oakum
D. Lead
A. Cement Mortar
Oldest plumbing material used by Egyptians, Greeks, and Romans. It is highly resistant to acid & suitable for underground installation but poisonous and injurious to human health
A. Galvanized Steel Pipe
B. Lead Pipe
C. Vitrified Clay Pipe
D. Bituminous Fiber Sewer Pipe
B. Lead Pipe
Cheapest among the sewer pipes consists of layers of oil tar pitch impregnated ground wood fiber. Famous during 1950s-1960s (post-war)
A. Galvanized Steel Pipe
B. Lead Pipe
C. Vitrified Clay Pipe
D. Bituminous Fiber Sewer Pipe
D. Bituminous Fiber Sewer Pipe
How long is a commercial cast iron pipe?
A. 1.4 m
B. 1.5 m
C. 1.6 m
D. 1.7 m
B. 1.5 m
Pipe made from clay, durable for underground installation, highly resistant to most acid wastes, brittle, and vulnerable to root infiltration
A. Galvanized Steel Pipe
B. Lead Pipe
C. Vitrified Clay Pipe
D. Bituminous Fiber Sewer Pipe
C. Vitrified Clay Pipe
the lower the pipe schedule, the ______
thinner
the higher the pipe schedule, the _____
thicker
NPS ≠ OD
NPS 1/2 to 12
If NPS = OD
NPS 14 and above
SDR
Standard Dimension Ratio
Refers to the ratio of pipe diameter to wall thickness
Standard Dimension Ratio (SDR)
the greater the SDR, the ______
thinner
the lower the SDR, the _____
thicker
Piping used for LPG
Polyethylene (PE)
Type of Polyethylene Pipe which is UV and acid resistant, mostly used for irrigation pipe
Low Density Polyethylene Pipe (LDPE)
Type of polyethylene pipe suitable for hot & cold water, can carry potable water, wastewater, slurries, chemicals, hazardous wastes
High Density Polyethylene (HDPE)
PPR
Polypropylene Random Co-polymer
Lead pipe for Iead safe pans
A. 19.56 kg/sqm and 1.6 mm thk
B. 19.56 kg/sqm and 1.2mm thk
C. 14.63 kg/sqm and 1.2 mm thk
D. 14.63 kg/sqm and 3.2mm thk
A. 19.56 kg/sqm and 1.6 mm thk
lead flashing or vent terminals
A. 19.56 kg/sqm and 1.6 mm thk
B. 19.56 kg/sqm and 1.2mm thk
C. 14.63 kg/sqm and 1.2 mm thk
D. 14.63 kg/sqm and 3.2mm thk
C. 14.63 kg/sqm and 1.2 mm thk
How thick are lead bends & lead traps?.
A. 1.6 mm thk
B. 1.2mm thk
C. 19 mm thk
D. 3.2mm thk
D. 3.2mm thk
Thickness of the exposed surface on each side of a lead pipe joint
A. 1.6 mm thk
B. 1.2mm thk
C. 19 mm thk
D. 3.2mm thk
C. 19mm thk
______ shall be lapped and assembly shall be fused to form a uniform weld at least as thick as the lead sheets being joined
A. Welded joint
B. soldered joint
C. Burned Lead Joint
D. Wiped joints
C. Burned Lead Joints
Joints in lead pipe or fittings, between lead pipe and brass or copper pipe
A. Welded joint
B. soldered joint
C. Burned Lead Joint
D. Wiped joints
D. Wiped joints
Made from mild steel, drawn through a die and welded. Easily corroded by alkaline and acid water. Deteriorates faster when used as hot water supply line
A. Galvanized Steel Pipe
B. Lead Pipe
C. Vitrified Clay Pipe
D. Bituminous Fiber Sewer Pipe
A. Galvanized Steel Pipe
commercial length of galvanized steel pipe
A. 5.00 m
B. 6.00m
C. 7.00m
D. 8.00 m
B. 6.00 m
Better in quality than steel pipe and more resistant to acid waste than steel pipe
A. Brass Pipe
B. Copper pipe
C. Galvanized Wrought Iron Pipe
D. Plastic or Synthetic Pipes
C. Galvanized Wrought Iron Pipe
Property refering to being resistant to compressive forces
Maleable
Resistant to tensile forces
Ductile
One of the most expensive types of pipe. Made of alloy or zinc and copper mixed at 15% and 85% proportion respectively
A. Brass Pipe
B. Galvanized Wrought Iron Pipe
C. Copper Pipe
D. Plastic or Synthetic Pipe
A. Brass Pipe
Better in quality than steel pipe, more resistant to acid waste than steel pipe
A. Brass Pipe
B. Galvanized Wrought Iron Pipe
C. Copper Pipe
D. Plastic or Synthetic Pipe
B. Galvanized wrought Iron Pipe
percentage mixture of zinc on brass pipe
A. 15%
B. 50%
C. 85%
D. 90%
A. 15%
percentage mixture of copper on brass pipes
A. 15%
B. 50%
C. 85%
D. 90%
C. 85%
Durable and extremely corrosive resistant material. Installed without joints and thus have lesser leaks. Can be used for hot & cold water supply lines
A. Brass Pipe
B. Galvanized Wrought Iron Pipe
C. Copper Pipe
D. Plastic or Synthetic Pipe
C. Copper Pipe
Hard tube copper pipe. Joined by soldering
Drawn tube
Soft tube copper pipe. Joined by flared joints
Annealed tube
Width of the indelibly colored stripe marking on copper pipes
A. 3.2mm
B. 6.4 mm
C. 1.2 mm
D. 1.6 mm
B.6.4 mm
Copper pipes used for air-conditioning and refrigeration
A. Arc tubes
B. DWV tube
C. K tube
D. L tube
A. Arc tube
copper pipes for underground and above ground drainage & vent pipings
A. M tube
B. DWV tube
C. K tube
D. L tube
B. DWV tube
copper pipes suitable for underground. heaviest type
A. M tube
B. DWV tube
C. K tube
D. L tube
C. K tube
copper pipes for minimum weight of water supply piping, commonly used in residential water supply line and for radiant heating installation
A. M tube
B. DWV tube
C. K tube
D. L tube
D. L tube
Copper pipe used for water piping when piping is above ground inside or a top a bldg or underground outside of structures. thinnest copper pipe available only in rigid form
A. M tube
B. DWV tube
C. K tube
D. L tube
A. M tube
_____ shall be installed without joints where possible. A shall be fully externally protected with bitumastic coating and fiberglass wrapping and installed inside a split rigid casing wherever installed underground
copper tubing
joints for soft copper water tubing
Flared joints
Joints in copper tubing shall be by brass or copper fittings
Solder and sweat joints
Allowable lead content in solder and fluxes for piping systems in potable water
A. 15%
B. 0.002 or 2%
C. 20%
D. 12%
B. 0.002 or 2%
Solder is uniform, no crack between pipe and fitting
Good solder joint
No solder, crack shows between pipe and fitting
Bad solder joints
Developed in Germany in 1935
A. Galvanized Wrought Iron Pipes
B. Galvanized steel Pipes
C. Plastic or Synthetic Pipes
D. Lead Pipes
C. Plastic or synthetic pipes
Should only be applied on male thread
Pipe joint material
What is the minimum wall thickness for threaded plastic pipe?..
A. Schedule 40
B. schedule 80
C. schedule 100
D. Schedule 120
B. Schedule 80
A strong rigid, and economical plastic pipe with maximum service temperature of 140°F (60°C)
A. Polyvinyl chloride
B. Acrylonitrile-butadiene-styrene
C. chlorinated polyvinyl chloride
D. Unplasticised polyvinyl chloride
A. Polyvinyl chloride
A rigid pressure piping system renowned for its high impact strength and durability which combined to give exceptional toughness. Has a maximum service temperature of 160°F (71.1°C)
A. Polyvinyl chloride
B. Acrylonitrile-butadiene-styrene
C. chlorinated polyvinyl chloride
D. Unplasticised polyvinyl chloride
B. Acrylonitrile-butadiene-styrene
Similar to PVC in strength and overall chemical resistant and has a maximum service temperature of 180°F (82.2 °C), may be used for hot & cold water distribution
A. Polyvinyl chloride
B. Acrylonitrile-butadiene-styrene
C. chlorinated polyvinyl chloride
D. Unplasticised polyvinyl chloride
C. Chlorinated polyvinyl chloride
strong, low maintenance, and lightweight plastic building material which is okay under prolonged exposure to sunlight
A. Polyvinyl chloride
B. Acrylonitrile-butadiene-styrene
C. chlorinated polyvinyl chloride
D. Unplasticised polyvinyl chloride
D. unplasticised polyvinyl chloride
Very lightweight material suitable for low pressure applications, has a maximum service temperature of 180°F (82.2 °C) used widely for industrial & laboratory drainage acids, bases and many solvents
A. polypropylene
B. Kem-Temp polyvinylidene fluoride
C. Fiberglass-reinforced plastic epoxy
D. unplasticised polyvinyl chloride
A. polypropylene
Strong, tough, and abrasive-resistant fluorocarbon material with a maximum service temperature of 280°F (138°C)
A. polypropylene
B. Kem-Temp polyvinylidene fluoride
C. Fiberglass-reinforced plastic epoxy
D. unplasticised polyvinyl chloride
B. Kem-Temp polyvinylidene fluoride
high strength, good chemical resistant with a maximum service temp of 280°F (138°C)
A. polypropylene
B. Kem-Temp polyvinylidene fluoride
C. Fiberglass-reinforced plastic epoxy
D. unplasticised polyvinyl chloride
C. Fiberglass-reinforced plastic epoxy
What is the maximum service temperature of PVC ?
140°F (60°C)
What is the maximum service temperature of ABS ?
160°F (71.1°C)
What is the maximum service temperature of PVDF ?
280°F (138°C)
PVDF
kem-temp polyvinylidene fluoride
____________ provide protection restricted to short pipe lengths at a points of connection with fittings necessarily stripped for threading and jointing
field bitumastic coating and wrapping
Copper tubing shall be fully externally protected with ___________ and installed inside a split rigid casing whenever installed underground
bitumastic coating and fiberglass wrapping
not adequate outside protection for ferrous piping or fittings
zinc coating (galvanized)
protection from breakage for piping passing under or through walls
embedded metal pipe sleeve
protection from external corrosion for pipes passing through or under cinders or other corrosive materials
polyethylene sheath
Protection for voids between pipes and sleeves through concrete floors in the ground
Bitumen
Protection for pipes directly embedded in concrete and masonry walls
Metal sleeve
Distance of bottom of all pipe trenches to the footing of any adjacent bldg or struc. and parallel to it. Also called as the “Angle of Repose”. This needs stable soil/flooring/ground
45°
maximum intervals of pipe supports
4 ft or 1.2m
For B& S hubless CISP, vertical supports are added at _______
every storey / closer or every floor
for CSP, horizontal pipe supports where joint occurs are added at _________
maximum 1.5m; if more than 1.5m then 3m
For CISP, horizontal pipe supports at support location are added at _________
0.45m from hub or joint; each horizontal branch connection
For hubless/compression gasket CISP, horizontal pipe supports are placed at _________
Every other joint, if more than 1.2m dev’t length, each joint
For screwed pipe (IPS), vertical supports are placed at _________
every other storey
For 19 mm dia. screwed pipe, horizontal supports are placed at _______
3m
For 25 mm dia. (and up) screwed pipes, horizontal supports are placed at _______
3.6m
For copper tubing, vertical supports are placed at _______
each storey max of 3m
For copper tubing of 38 mm dia. and less, horizontal supports are placed at _______
1.8 m
for 51 mm dia. and up copper tubing, horizontal supports are placed at _______
3m
For lead pipe, vertical supports are placed at _______
Max. 1.2m o.c. with rigid back-up
For lead pipe, horizontal supports are placed on _______
stiff metal or wooden backing for entire length w/ hanger property spaced
For plastic pipes, vertical supports are placed at _______
every 1m
For 38mm dia. and less plastic pipes, horizontal supports are placed on _______
stiff metal or wood backing with hanger in length
For 51 mm dia. plastic pipe, horizontal supports are placed _______
without backings but with spaced metal hangers
For pipes in ground, supports are laid on ________ for its entire length
firm bed
Hangers and straps shall not compress, distort, cut or abrade the piping and shall allow ________ of pipe
free movement
In general, vertical piping shall be supported at ________
each story or floor level
device used to maintain alignment of vertical piping between floors
mid-story guide
where should you put supports for trap arms?
3 ft or 914 mm in length as close as possible to the trap
where should you put supports for trap arms?
3 ft or 914 mm in length as close as possible to the trap
thrust blocks shall be installed at
A. changes in direction (tees and bends)
B. changes in size (reducers
C. stops or dead ends
D. Valves, where thrusts may be expected
E. None of the above
F. All of the above
F. All of the above
also known as connections/covers
FITTINGS
a fitting, screwed or caulked over the end of pipe for closing the pipe end
CAP
pipe flange that is not drilled for bolt holes
BLANK FLANGE
flange that closes the end of pipe where there is no opening for passage of liquid or gas
BLIND FLANGE
fitting with adjacent reverse bends and shaped like the letter “S”
DOUBLE-BEND FITTING
two offsets in succession or in series such that the centerlines of the outside ends are in the same straight line
DOUBLE OFFSET
combination of elbows or bends, which brings one section of the pipe out of line but into a line parallel with the original section
OFFSET
an open return bend usually made up of two 90° bends
RETURN BENDS
a tee with the branch tapped to receive a threaded pipe or fittings
TAPPED TEE
hose connection with two-gated outlets permitting two connections
WYE
IAPMO
International Association of Plumbing & Mechanical official
A type of pipe joinery which is by means of flexible compression joints
Flexible Compression Factory-Fabricated Joints
A type of joinery by means of molded neoprene rubber coupling joints
Molded rubber coupling joints
A mechanical connection which depends on internal retention device to prevent pipe or tubing separation
Pressure-Lock Type Connection
How long is a commercial PE and PB tubes?
30 meters
What are the flexible type of plastic pipes?
PE & PB
What are the flexible type of plastic pipes?
PE & PB
One of the considerations with working with galvanized steel pipe which refers to the manner of planning the layout and rerouting the pipes to reach the point of service
DIRECT CONNECTION
One of the considerations with working with galvanized steel pipe wherein errors committed may mean additional pipes and fittings, cost of labor, and the risk of water leakage
MEASURING & CUTTING
One of the considerations with working with galvanized steel pipe wherein steel pipe should be held rigidly with proper holding tools. It is done by using a 14 teeth per inch hacksaw blade and applying forward strokes at the rate of about one stroke per second. The burrs are removed from the inside edge of the pipe with files or reamers
CUTTING & THREADING OPERATIONS
What is the most suitable cutting tool for copper pipes?
ROTARY TUBE CUTTER
In the absence of a rotary tube cutter, what cutting tool is used for heavy copper pipes?
24 teeth per inch hacksaw blade
In the absence of a rotary tube cutter, what cutting tool is used for thin copper pipes?
32 teeth per inch hacksaw blade
What cutting tool is used for cutting galvanized steel pipe?
14 teeth per inch hacksaw blade
What is the simplest way of joining plastic pipes?
SOLVENT WELDING
What is the minimum pipe outlet for gas appliance?
1/2”
What material is used for gas appliance piping outlet?
Galvanized steel or Black Steel Pipe
what is the material for medical gas tube?
Type K or L in drawn tube only
gas vents suitable only for listed draft-hood equipped, gas-fired appliances
Type B
gas vents suitable for gas-fired vented wall furnaces or recessed heaters
type BW
gas vents suitable for positive or negative pressure venting gas appliances producing flue gasses at class I (up to 245°C) or class II (up to 135°C) temperatures
Type BH
gas vents suitable for oil-fired and natural-gas appliances that produce draft hood flue gasses that do not exceed a tempo 570°F (299 °C) or 926°F (497°C)
type L
gas vents suitable for only as connectors and for venting gas or oil
Type C
