2015 Plumbing Code

Journeyman Code

292 flashcards · Other · by And Coop

Building sewers shall be tested by completely filling the sewer with water from the
Lowest to highest point
Except for plastic piping systems, hot and cold water piping may be tested with
50 psi air or the working pressure of the water in the system for at least 15 minutes
The required clearance in front of a 2-inch cleanup is 18 inches.
A stack, as defined in the code, is
The vertical main of soil, waste, or vent piping that extends one or more stories
Under no circumstances may gas appliance pressure regulators be vented
To the gas utilization equipment flue or exhaust system
Aboveground schedule 40 PVC and ABS DWV plastic piping installed horizontally shall be supported at intervals not to exceed 4 feet.
When sizing a copper fuel-gas piping system that has an inlet pressure of less than 2 psi with a pressure drop of 0.3 inch w.c., the maximum cubic feet per hour of gas flow allowed through a 5/8-inch OD. ACR tube 75 feet in developed length is
27
A Type B-W gas vent shall terminate at least 12 feet in vertical height above the bottom of the wall furnace.
The maximum horizontal distance of a trap arm is measured from the inner edge of the vent to the?
Weir of the trap
The maximum number of lavatories on a 2 inch horizontal waste line is
8
Sleeves shall be provided to protect piping through concrete and masonry walls
PEX piping one inch and smaller installed horizontally shall be supported at intervals not exceeding 32 inches
The minimum common horizontal waste pipe serving a bathtub, a lavatory, and a kitchen sink shall be at least 2 inches.
the required clearance in front of a 3-inch cleanout is 24 inches.
A refrigerator used to store food and that requires drainage shall be drained by means of
An indirect waste pipe
Sheet metal, constituting a part of any vent connector, shall be at least 0.0304 inches.
One material not approved for the installation of an external trap for a urinal is
Drawn-copper alloy tubing traps
Hub and spigot cast-iron piping in 10-foot lengths, installed horizontally, shall be supported at intervals of not more than 10 feet.
A drain connecting the compartments of a set of fixtures to a trap is called a (an)
Continuous waste
A device to prevent backflow into the potable water system is called a
BackCast-flow preventer
Copper tube and fittings for drainage and vent piping installed aboveground shall be at least
Type DWV
A drinking fountain shall be permitted to be installed with indirect waste.
Vitrified clay pipe and fittings are
Approved for use as a building drain and shall be kept not less than 12 inches below ground
Cast-iron soil pipe shall not be
Threaded
All trenches deeper than the footing of any building or structure and paralleling the same must be at least 45 degrees from the bottom exterior edge of the footing or as approved
Sewer or other drainage piping that shall not be installed under or within 2 feet of any building or structure is
SDR 35 sewer pipe
Cast-iron soil pipe stacks shall be supported at
Their base and each floor
Water service pipes, or any underground water pipes, shall not be run or laid in the same trench with SDR 35 sewer piping unless specific conditions are met.
Notification for inspection of work authorized by the permit shall be made
Not less than 24 hours before the work is to be inspected.
Except for plastic piping, the use of a 50 psi air test in lieu of the working pressure water test is allowed by code for
Water piping
The minimum size waste pipe for a domestic kitchen sink is 2 inches
The minimum size trap and trap arm for a kitchen sink is 1-1/2 inches.
Horizontal drainage lines connecting with other horizontal drainage lines shall enter through
45-degree Y branches
In each run of horizontal drain piping, the distance between clean outs shall not exceed
100 feet
Three-inch horizontal drainage piping shall be run in practical alignment and at a uniform slope of not less than 1/4 inch per foot.
Where a fixture is installed on a floor level below the elevation of the next upstream manhole, the fixtures shall be protected from back flow of sewage by installing
a backwater valve
A sewage ejector discharge line shall be provided with a
back water valve and a gate valve
The mccimm number of water closets on a 3 inch stack is
four
Unless increased for it's entire length, the maximum length for a 1 1/2 inch vent pipe is 60 feet.
The maximum fixture units allowed on a 4-inch horizontal drain line with a 2 percent slope is
216
A 2 in h waste stack will serve a maximum of
Eight kitchen sinks
The aggregate cross-sectional area of all vents for a system with a required 4 inch sewer shall be at least 12.57 square inches.
A fixture vent pipe increased one pipe size its entire length
may exceed the maximum horizontal length otherwise limited by code
A pluming vent shall terminate not less than 10 feet from an air intake.
Each drainage stack that extends 10 or more stories above the building drain shall be served by a parallel vent stack.
A domestic dishwasher drain shall first connect to an approved air gap fitting.
An indirect waste pipe 12 feet long requires a trap only
Drinking fountains may be installed with indirect wastes
Chemical or industrial liquid wastes that are likely to damage the public sanitary sewer system shall be pre-treated to render them innocuous
The vent for a kitchen sink also serves as a drain for a laundry sink. The size of the wet-vented section shall not be less than 3 inches
Special venting for island fixtures is used for island sinks and similar equipment.
A branch line serving a trap in a combination waste and vent system is required to be separately vented when the length of the branch exceeds 15 feet.
A vent in a combination waste and vent system shall be approximately equal in area to one-half the cross-sectional area of the drain pipe served.
One trap may serve a set of not more than three single-compartment sinks
The vertical distance between a fixture outlet and the trap weir shall no exceed 24 inches
The developed length of 1-1/2-inch trap arms shall not exceed 3 feet, 6 inches.
The developed length between the trap of a water closet and its vent shall not exceed 6 feet.
Fixture traps shall have a water seal of not less than 2 inches.
The total capacity in gallons of fixtures discharging into any such hydromechanical grease intercept shall not exceed 2 1/2 times the certified gpm flow rate.
The minimum horizontal distance between a water supply well and the building sewer constructed of SDR 35 pipe and fittings is 50 feet.
Three-quarter inch or 1-inch steel gas piping installed horizontally shall be supported at intervals not to exceed 8 feet.
Unions shall be installed in a water supply system within 12 inches of regulating equipment, water heating, conditioning tanks or similar equipment that requires service by removal or replacement.
Wall-mounted water closet fixtures shall be securely bolted to an approved carrier fitting.
Joints at the roof around pipes shall be made watertight by the use of approved flashings.
Soil and drain pies located above food-handling establishments shall be subjected to a standing water test of not less than 10 feet.
Concealed slip joint connections require a(an) 12 x 12 access panel without obstructions for inspection and repair.
Where an exposed or accessible fixture tailpiece shall be permitted to be of seamless drawn brass not less than 20 B&S gauge
Lavatories shall have a waste outlet and fixture tailpiece not less than 1-1/4 inches in diameter.
The distance from center of a water closet to a side wall or obstruction shall not be closer than 15 inches
No trap for any clothes washer standpipe receptor shall be installed below the floor.
Except when required for accessibility in section 403, the depth of the finished dam or threshold for any shower, measured from the top of the drain, shall not be less than 2 inches.
A type B or L gas vent may have one offset of not more than 60 degrees from the vertical.
When using asphalt-impregnated felt as the lining material for built on-site shower receptors, it shall have not less than three layers of 15 pound felt with each succeeding layer hot-mopped to that below.
The critical level of the vacuum breaker serving a urinal above the highest part of the fixture shall be not less than 6 inches or the distance according to its listing.
Water closet tank ballcocks shall be installed with the vacuum breaker critical level at least 1 inch above the full opening of the overflow tube.
Where static water pressure in the water supply piping is exceeding 80 psi an approved-the pressure regulator preceded by an adequate strainer shall be installed.
A water system containing storage water-heating equipment will require a listed combination temperature and pressure relief valve.
In addition to appropriate use of fittings, changes in direction in copper tubing may be made with bends.
The terminal end of the drain for a pressure-relief valve shall not be threaded.
Of those listed listed, clean outs may be omitted on a horizontal drain line less than 5 feet except for sinks.
Because of structural conditions, a 4-inch house drain is installed with a slope of 1/8 per foot. This installation will result in a (an) reduction in fixture unit loading allowance.
Each trap, except for traps within a/an interceptor are required to be self-cleaning.
Underground gas piping systems shall be installed with a cover not less than 12 inches. Where external damage to the pipe or tubing from external forces is likely to result, the cover shall be not less than 18 inches.
In a common gas systems serving a number of individual buildings, each building shall be equipped with a shutoff valve.
An appliance shutoff valve shall be within 6 feet of the appliance it serves.
The approximate gas input, in Btu per hour, for a freestanding domestic gas range is 65000
Leaks in gas piping shall be located by applying a noncorrosive leak detection fluid.
The minimum size of gas piping supply to a mobile home is 3/4 inch
The minimum clearance of listed water hearers to any combustible wall or partition is specified in accordance with their listing and and the manufacturer's installation instructions.
Fuel-burning water heaters installed in a closet with a listed, gasket door assembly, and listed self-closing device may be located in a bedroom.
Burners and burner ignition devices of gas-fired water heaters (except for those listed as flammable vapor ignition resistant) in residential garages and in adjacent spaces that open to the garage shall be located not less than 18 inches above the floor level.
Water heater vents shall terminate above a roof surface at least 8 feet from a vertical wall.
The exit terminals of mechanical draft systems shall be not less than 7 feet above grade.
Equipement and appliance located on roofs of buildings more than 15 feet in height shall have an inside means of access to the roof.
Single-wall metal vent pie shall be constructed of galvanized, sheet steel not less than 0.0304 inch thick.
Single-wall metal pipe shall terminate at least 5 feet in vertical height above the highest connected appliance draft hood outlet or flue collar.
The minimum size of a building sewer shall be determined on the basis of the total number of fixture units drained by such sewer in accordance with Table 717.1 fixture unit loading.
A plumbing permit expires if work authorized by such permit is not commenced within 180 days.
As long as such repairs do no require the replacement or rearrangement of valves, pipes or fittings, a plumbing permit is not required for the clearing of stoppages.
The maximum units on a 2 inch horizontal wast line is eight.