Ch 7 - Sanitary Drainage Flashcards
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No galvanized wrought iron or galvanized steel pipe shall be used underground and shall be kept at least _____ inches above the ground.
6 inches
(1) No galvanized wrought-iron or galvanized steel pipe shall be used underground and shall be kept not less than 6 inches (152 mm) aboveground.
2024 UPC- 701.2 Drainage Piping.
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No vitrified clay pipe or fittings shall be used above ground or where pressurized by a pump or ejector. They shall be kept at least _____ inches below ground.
12 inches
(3) No vitrified clay pipe or fittings shall be used aboveground or where pressurized by a pump or ejector. They shall be kept not less than 12 inches (305 mm) belowground.
2024 UPC- 701.2 Drainage Piping.
What is the maximum fixture unit loading allowed on a 2” waste stack?
16 units
Table 703.2 shows the maximum number of fixture units allowed on a vertical or horizontal drainage pipe, building drain, or building sewer of a given size; the maximum number of fixture units allowed on a branch interval of a given size; and the maximum length (in feet and meters) of a vertical drainage pipe of a given size.
2024 UPC- 703.2 Maximum Number of Fixture Units. 2024 UPC- Table 703.2 Maximum Unit Loading and Maximum Length of Drainage and Vent Piping (page 133)
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For a continuous flow into a drainage system, such as from a pump, sump, or similar device _____ fixture units shall be allowed for each gallon per minute of flow.
2 (d.f.u.)
Table 703.2 shows the maximum number of fixture units allowed on a vertical or horizontal drainage pipe, building drain, or building sewer of a given size; the maximum number of fixture units allowed on a branch interval of a given size; and the maximum length (in feet and meters) of a vertical drainage pipe of a given size.
2024 UPC- 703.2 Maximum Number of Fixture Units. 2024 UPC- Table 703.2 Maximum Unit Loading and Maximum Length of Drainage and Vent Piping (page 133)
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Pot sinks, scullery sinks, commercial dishwashing machines, silverware washing machines, and other similar fixtures shall be connected _____ to the drainage system.
Directly
Pot sinks, scullery sinks, dishwashing sinks, silverware sinks, and other similar fixtures shall be connected directly to the drainage system. A floor drain shall be provided adjacent to the fixture and shall be connected on the sewer side of the sink. No other drainage line shall be connected between the floor drain waste connection and the fixture drain. The fixture and floor drain shall be trapped and vented in accordance with this code.
2024 UPC- 704.3 Commercial Sinks.
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Caulked joints for cast iron bell-and-spigot soil pipe and other similar joints shall be firmly packed with _____ or hemp and filled with molten lead to a depth of not less than 1”.
Oakum
Caulked joints shall be firmly packed with oakum or hemp and filled with molten lead to a depth of not less than 1 inch (25.4 mm) in one continuous pour. The lead shall be caulked thoroughly at the inside and outside edges of the joint. After caulking, the finished joint shall not exceed 1/8 of an inch (3.2 mm) below the rim of the hub. No paint, varnish, or other coatings shall be permitted on the joining material until after the joint has been tested and approved.
2024 UPC- 705.2.1 Caulked Joints
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Female PVC screwed fittings for water piping shall be used with plastic male fittings and plastic male _____ only.
Threads
Threads shall comply with ASME B1.20.1. A minimum of Schedule 80 shall be permitted to be threaded. Molded threads on adapter fittings for transition to threaded joints shall be permitted. Thread sealant compound that is compatible with the pipe and fitting, insoluble in water and nontoxic shall be applied to male threads. The joint between the pipe and transition fitting shall be of the solvent cement type. Caution shall be used during assembly to prevent over tightening of the PVC components once the thread sealant has been applied. Female PVC threaded fittings shall be used with plastic male threads only.
2024 UPC- 705.6.3 Threaded Joints.
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No fitting having more than _____ inlet at the same level shall be used unless such fitting is constructed so that the discharge from one inlet cannot readily enter any other inlet.
One
Horizontal drainage lines, connecting with a vertical stack, shall enter through 45 degree (0.79 rad) wye branches, 60 degree (1.05 rad) wye branches, combination wye and one-eighth bend branches, sanitary tee or sanitary tapped tee branches, or other approved fittings of equivalent sweep. No fitting having more than one inlet at the same level shall be used unless such fitting is constructed so that the discharge from one inlet cannot readily enter any other inlet. Double sanitary tees shall be permitted to be used where the barrel of the fitting is not less than two pipe sizes larger than the largest inlet, (pipe sizes recognized for this purpose are 2 inches, 2-1/2 inches, 3 inches, 3-1/2 inches, 4 inches, 4-1/2 inches, 5 inches, 6 inches, etc.) (50 mm, 65 mm, 80 mm, 90 mm, 100 mm, 115 mm, 125 mm, 150 mm, etc.).
2024 UPC- 706.2 Horizontal to Vertical.
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Sixty degree branches or offsets may be used when installed in a true _____ position.
Vertical
Vertical drainage lines connecting with horizontal drainage lines shall enter through 45 degree (0.79 rad) wye branches, combination wye and one-eighth bend branches or other approved fittings of equivalent sweep. Branches or offsets of 60 degrees (1.05 rad) shall be permitted to be used where installed in a true vertical position.
2024 UPC- 706.4 Vertical to Horizontal.
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Cleanouts in piping larger than 2 inches shall have a clearance of not less than _____ inches in front of the cleanout.
18 inches
Each cleanout in piping 2 inches (50 mm) or less in size shall be so installed that there is a clearance of not less than 18 inches (457 mm) by 18 inches (457 mm) in front of the cleanout. Cleanouts in piping exceeding 2 inches (50 mm) shall have a clearance of not less than 24 inches (610 mm) by 24 inches (610 mm) in front of the cleanout. Cleanouts in under-floor piping shall be extended to or above the finished floor or shall be extended outside the building where there is less than 18 inches (457 mm) vertical overall, allowing for obstructions such as ducts, beams, and piping, and 30 inches of (762 mm) horizontal clearance from the means of access to such cleanout. No under-floor cleanout shall be located exceeding 5 feet (1524 mm) from an access door, trap door, or crawl hole.
2024 UPC- 707.9 Clearance.
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Horizontal drainage piping shall be run in practical alignment and a uniform slope of not less than _____ of an inch per foot or 2 percent toward the point of disposal.
1/4 inch
Building drain and other horizontal drainage piping shall be run in practical alignment and a uniform slope of not less than 1/4 inch per foot (20.8 mm/m) or 2 percent toward the point of disposal. Where it is impractical due to the depth of the street sewer, structural features, or to the arrangement of a building or structure to obtain a slope of 1/4 inch per foot (20.8 mm/m) or 2 percent, building drain piping 4 inches (100 mm) or larger in diameter shall be permitted to have a slope of not less than 1?8 inch per foot (10.4 mm/m) or 1 percent, when first approved by the Authority Having Jurisdiction.
2024 UPC- 708.0 Grade of Horizontal Drainage Piping. 2024 UPC- 708.1 General.
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In single dwelling units, the ejector or pump shall be capable of passing a _____ inch diameter solid ball.
1-1/2 inch
(2) In single dwelling units, the ejector or pump shall be capable of passing a 1-1/2 inch (38 mm) diameter solid ball, and the discharging piping of each ejector or pump shall have a backwater valve and gate valve, and be not less than 2 inches (50 mm) in diameter.
2024 UPC- 710.3 Sewage Ejector and Pumps.
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Bathtubs, laundries, washing machine standpipes, kitchen sinks and dishwashers shall be considered _____ fixtures.
Suds-producing
Drainage connections shall not be made into a drainage piping system within 8 feet (2438 mm) of a vertical to horizontal change of direction of a stack containing suds-producing fixtures. Bathtubs, laundries, washing machine standpipes, kitchen sinks and dishwashers shall be considered suds-producing fixtures. Where parallel vent stacks are required, they shall connect to the drainage stack at a point 8 feet (2438 mm) above the lowest point of the drainage stack.
2024 UPC- 711.0 Suds Relief. 2024 UPC- 711.1 General.
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The piping of the plumbing, drainage, and venting systems shall be tested with water or _____.
Air
The piping of the plumbing, drainage, and venting systems shall be tested with water or air except that plastic pipe shall not be tested with air. The Authority Having Jurisdiction shall be permitted to require the removal of cleanouts, etc., to ascertain whether the pressure has reached all parts of the system. After the plumbing fixtures have been set and their traps filled with water, they shall be submitted to a final test.
2024 UPC- 712.1 Media.
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When testing with water, the water shall be kept in the system, or in the portion under test, for in at least _____ minutes before inspection starts.
15 minutes
The water test shall be applied to the drainage and vent systems either in its entirety or in sections. Where the test is applied to the entire system, openings in the piping shall be tightly closed, except the highest opening, and the system filled with water to point of overflow. Where the system is tested in sections, each opening shall be tightly plugged, except the highest opening of the section under test, and each section shall be filled with water, but no section shall be tested with less than a 10 foot head of water (30 kPa). In testing successive sections, not less than the upper 10 feet (3048 mm) of the next preceding section shall be tested, so that no joint or pipe in the building (except the uppermost 10 feet (3048 mm) of the system) shall have been submitted to a test of less than a 10 foot (30 kPa) head of water. The water shall be kept in the system, or in the portion under test, for not less than 15 minutes before inspection starts. The system shall then be tight at points.
2024 UPC- 712.2 Water Test.
