QUALITY, WEIGHT AND INSTALLATION OF MATERIALS

Omaha Municipal Code ch. 49, art. VIII

in effect

Omaha Municipal Code § 49-800 Generally.

Sec. 49-800. - Generally. All materials used in any drainage or plumbing system or parts thereof shall be new material and free from defects. All joints and connections shall be made tight. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-801 Minimum standards.

Sec. 49-801. - Minimum standards. Materials specified in this chapter are the minimum approved standards for material to be used in the construction, alteration, or repair of any plumbing or drainage system. Exception: An extension of, addition to, or relocation of existing soil, waste, or vent pipe with material of like grade or quality not to exceed 15 feet is allowed if the existing soil, waste, or vent pipes were installed in accordance with the plumbing code in effect prior to the effective date of this Code. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-802 Aluminized steel Type 2 corrugated steel pipe.

Sec. 49-802. - Aluminized steel Type 2 corrugated steel pipe. May be used for storm water detention and retention only and meeting the following: (a) Pipe and fittings shall meet AASHTO specifications M274 and M36, ASTM specifications A929 and A760. (b) Installation of pipe and fittings shall be in accordance with ASTM A798. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-803 Backflow devices and assemblies.

Sec. 49-803. - Backflow devices and assemblies. Backflow devices and assemblies shall comply with the following provisions: (a) Atmospheric vacuum breakers (AVB) ASSE 1001, ANSI A1 12.1.1. (b) Hose connection vacuum breakers: ASSE 101 land shall be tamper-proof. (c) Sill cocks shall be equipped with an integral vacuum breaker conforming to ANSI Standard 1019. Exception: Hose bibs dedicated for residential clothes washers and the drain on a water heater. (d) Pressure type vacuum breakers (PVB) ASSE 1020. Spill-resistant pressure vacuum (SPVB) ASSE 1056. (e) Backflow preventers with intermediate atmospheric vents ASSE 1012. (f) Double check valve type back pressure backflow preventers (DC) ASSE 1015. (g) Reduced pressure principle backflow preventers (RP)ASSE 1013. (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 26, 8-13-21)

Omaha Municipal Code § 49-804 Backwater valves and gate valves installed in building drain or building sewers.

Sec. 49-804. - Backwater valves and gate valves installed in building drain or building sewers. The following provisions shall apply to backwater valves and gate valves: (a) Backwater valves shall have cast-iron bodies with bearing parts of noncorrosive metal or material. (b) Backwater valves shall be constructed to ensure a positive mechanical seal and remain closed except when discharging wastes. (c) Valve access covers shall be bolted-type with a gasket. (d) Drainage service valves shall be full-way type with working parts of noncorrosive metal. (e) Four-inch or greater diameter valves shall have cast-iron or brass bodies. (f) When installed below a finished floor and less than two feet deep, the minimum access opening shall be 24 inches by 24 inches. (g) When installed outside the building or more than two feet deep a minimum 48-inch manhole shall be used. Exception: Backwater valves for dwelling units and townhouses may be PVC or ABS plastic, but shall not be co-mingled with other materials. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-805 Brass pipe and fittings.

Sec. 49-805. - Brass pipe and fittings. Brass pipe and fitting shall meet ASTM B43 Specification for seamless red brass. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-806 Chlorinated polyvinyl chloride (CPVC) SDR 11.

Sec. 49-806. - Chlorinated polyvinyl chloride (CPVC) SDR 11. Generally, CPVC may be used for potable water as permitted in section 49-555 All joints shall be socket type employing solvent cements and meet the following: (a) Chlorinated polyvinyl chloride (CPVC) shall conform to ASTM D 2846. (b) Rigid vinyl compounds with a Cell Class of 24448 or Cell Class 23447 for pipe and Cell Class 23447 for fittings as required per ASTM D1784. (c) Joints shall be made with solvent cement, orange in color conforming to ASTM F 493. (d) CPVC shall not be co-mingled, inserted or mixed with other materials except as illustrated in Figure 49-806(d) for lawn sprinkler systems. (e) Shall only be used above ground. (f) CPVC 90 degree ells shall not be used at the point of connection for a shower arm or tub spout. The piping from the shower or tub valve to the shower head and tub spout shall be copper pipe and fittings. (g) There shall be a minimum of 12 inches from the connection to a water heater to any CPVC piping. (h) Support: (1) Horizontal pipe: CPVC pipe shall be supported individually at intervals not to exceed 32 inches with minimum clear spacing of three inches between parallel lines. (2) Vertical pipe: CPVC pipe shall be supported individually at intervals not to exceed 48 inches with a minimum clear spacing of three inches between parallel lines. (i) Thermal expansion: (1) Support the pipe according to subsection (h) above, but do not rigidly restrain the pipe at branches or change of direction. (2) Do not anchor pipe rigidly in walls. All holes shall be adequately sized to allow for free movement. (3) Table 49-806(i), below, provides expansion loop requirements. (See Figure 49-806(i)(3)). (4) There shall not be any branches connected to the expansion loop. _____ Table 49-806(i) Length of Run (feet) 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 ½ | A | 13.9 | 19.7 | 24.0 | 28.0 | 31.0 | 34.0 | 37.0 | 39.5 | 42.0 | 44.0 | 46.0 B | 3.0 | 4.0 | 5.0 | 6.0 | 6.2 | 6.8 | 7.4 | 7.9 | 8.4 | 8.8 | 9.2 ¾ | A | 16.5 | 24.0 | 28.5 | 33.0 | 37.0 | 40.5 | 43.5 | 46.5 | 49.5 | 52.0 | 54.5 B | 3.5 | 5.0 | 6.0 | 7.0 | 7.4 | 8.1 | 8.7 | 9.3 | 9.9 | 10.4 | 10.9 1 | A | 18.5 | 26.5 | 32.5 | 37.5 | 42.0 | 46.0 | 49.5 | 53.0 | 56.0 | 59.0 | 62.0 B | 4.0 | 5.5 | 7.0 | 8.0 | 8.4 | 9.2 | 9.9 | 10.6 | 11.2 | 11.8 | 12.4 1¼ | A | 20.5 | 29.0 | 36.0 | 41.5 | 46.0 | 50.5 | 54.5 | 58.5 | 62.0 | 65.5 | 68.5 B | 4.1 | 5.8 | 7.2 | 8.3 | 9.2 | 10.1 | 10.9 | 11.7 | 12.4 | 13.1 | 13.7 1½ | A | 22.5 | 32.0 | 39.0 | 45.0 | 50.5 | 55.0 | 59.5 | 63.5 | 67.5 | 71.0 | 75.0 B | 4.5 | 6.4 | 7.8 | 9.0 | 10.1 | 11.0 | 11.9 | 12.7 | 13.5 | 14.2 | 15.0 2 | A | 25.5 | 36.5 | 44.5 | 51.5 | 57.5 | 63.0 | 68.0 | 72.5 | 77.0 | 81.0 | 85.0 B | 5.1 | 7.3 | 8.9 | 10.3 | 11.5 | 12.6 | 13.6 | 14.5 | 15.48 | 16.2 | 17.0 ΔT of 130°F, for CPVC. A and B are in inches. _____ (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 27, 8-13-21)

Omaha Municipal Code § 49-807 Chlorinated polyvinyl chloride schedule 80 pressure pipe and fittings.

Sec. 49-807. - Chlorinated polyvinyl chloride schedule 80 pressure pipe and fittings. The following provisions shall apply: (a) CPVC schedule 80 pressure pipe and fittings shall be gray in color and meet ASTM F441. (b) Rigid vinyl compounds ASTM D 1784 with a cell class of 23447 for fittings, 24448 for pipe. (c) Fittings ASTM F437 or ASTM F439. (d) Solvent cements ASTM F439. (e) Plastic piping component NSF/ANSI Standard 14. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-808 Chlorinated polyvinyl chloride schedule 40 chemical waste pipe and fittings.

Sec. 49-808. - Chlorinated polyvinyl chloride schedule 40 chemical waste pipe and fittings. The following provisions shall apply: (a) CPVC schedule 40 pipe and fittings shall be gray in color and meet ASTM F441. (b) Rigid vinyl compounds ASTM 1784 with a cell class meeting or exceeding 23447 (c) Pipe and fittings ASTM F2618. (d) Fittings ASTM D 3311 drainage patterns. (e) Solvent cements ASTM F493. (f) Plastic piping component NSF/ANSI Standard 14. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-809 Closet floor flanges and carriers.

Sec. 49-809. - Closet floor flanges and carriers. The following shall apply to closet floor flange installations: (a) Flanges shall be manufactured of PVC, ABS, brass, malleable cast-iron or cast-iron with a thickness of at least three-sixteenth inch. (b) All closet screws, closet flange bolts, washers and nuts shall be brass or stainless steel. Shall be securely anchored to the floor with brass or stainless steel bolts or screws with brass or stainless nuts and washers. The anchor shall withstand a minimum lateral force of 250 pounds. Exception: When a closet bend passes through a slab on grade concrete floor and the joint is made with lead and oakum. (c) Carriers for commercial buildings shall meet ASME /ASTM A1 12.6.1. For residential use, carriers shall be approved by the board as to design and materials used and the board shall keep a list of all approved residential carriers. (d) There shall not be any intermingling of dissimilar materials. (e) All cast-iron water closet floor flanges shall be connected by lead and oakum joint, hubless joint or compression joint connection. (f) Offset flanges shall have a maximum 45 degree set. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-810 Reserved.

Omaha Municipal Code § 49-811 Copper pipe and fitting installation.

Sec. 49-811. - Copper pipe and fitting installation. Copper tube and fittings shall be seamless, cold drawn hard copper tubing, ASTM B88, Type K, L, or M. DWV may be used in soil, waste and vent lines only. Pre-formed piping shall be Type K or L. Additionally, the following provisions shall apply: (a) Copper fittings. (1) Copper solder fittings. (i) Shall be cast brass with 85 percent copper contents or wrought copper of the same material as copper tubing and shall conform to ASTM B88. (ii) Soil and waste fittings shall be cast brass or wrought and shall be drainage pattern only. Fittings shall be machined to have a pitch. (2) Copper press fit fittings. (i) Shall meet ASTM B-88 and B75. (ii) O-rings shall be manufactured of EPDM and meet ASTM D-2000. (iii) Shall be used for water supply only. (iv) Shall only be installed when the surrounding air temperature meets or exceeds 20 degrees Fahrenheit. (v) Shall not be installed below ground. (vi) Shall only be installed on the downstream side of the first valve or bypass tee after the meter. (vii) When used with Type M copper, the distance between fittings shall equal three times the pipe diameter (viii) A solder joint shall not be made within 12 inches of a press fit fitting. (ix) Pipe shall be reamed and chamfered prior to assembly. (3) Copper tube rolled grooved joining fittings. (i) Shall be full flow wrought copper conforming to ASTM B88 and B75. (ii) Couplings shall be rigid ("zero-flex") style consisting of a ductile cast iron housing conforming to ASTM A-536 and a synthetic rubber gasket. (iii) Gaskets shall be designed for domestic water service from 30 degrees Fahrenheit to 230 degrees Fahrenheit and shall be molded of an EPDM compound conforming to ASTM D-2000. (iv) Shall be used for water supply only. (v) Couplings shall be installed according to manufacturer's instructions to produce a system capable of withstanding a 300 psig static test. (vi) Shall only be installed on the down-stream side of the first valve or bypass tee after the meter. (4) Push to connect fittings. (i) Shall conform to ASSE 1061. (ii) O-rings shall be molded of an EPDM compound conforming to ASTM D-2000. (iii) Shall be installed in accordance with manufacturer's installation instructions. (iv) Copper tubing shall be reamed and deburred prior to installation. (v) Shall only be used for copper water supply and distribution. (vi) Shall only be used in situations where other means of managing to shut the service off to a building cannot be done and only up to two fittings maximum can be used. (b) Installation. (1) General: (i) Copper tubing for inside, above grade water supply distribution systems shall be seamless, cold drawn, commercially pure, hard copper tubing, ASTM B88, Type K, L, or M. Joints shall be solder type, grooved joining system, copper press fit fittings, push to connect fittings or mechanically formed extruded outlets conforming to ASTM F2014. (ii) Below grade water supplies one inch and smaller shall be continuous, soft type K copper with no joints. Sizes larger than one inch shall be soft or hard drawn Type K copper with brazed joints (hard soldered). (iii) All copper installations for drain, soil, waste and vent lines shall begin at least one inch above the floor. No copper waste or vent piping shall be permitted underground. (iv) For remodeling or alteration work only, Type K or L soft copper may be installed vertically in partitions. (2) Support/hangers: (i) Horizontal tubing: All copper tubing shall be supported at approximately six-foot intervals for piping one and one-half inches and smaller in diameter and ten-foot intervals for piping two inches and larger in diameter. (ii) Vertical tubing: All copper tubing three-quarters inch and smaller in diameter shall be supported at each story or at maximum intervals of four feet. Piping one inch and larger in diameter shall be supported at maximum intervals of ten feet or at each story. (iii) All water lines shall have a minimum clear spacing of three inches between parallel lines. (3) The following provisions shall apply to soldered joints: (i) All solder joints for copper tubing shall be made with the proper fittings accordance with the methods of ASTM B 828, Flux shall conform to ASTM B813 and solder shall conform to ASTM B32. (ii) Surfaces to be soldered shall be cleaned bright. (iii) Joints shall be properly reamed, fluxed and made with solder that complies with State of Nebraska law. (4) Brazed joints shall be made with approved flux conforming to AWS Standard A5.31, Type FB3-A or FB3-C and brazed with a filler metal conforming to AWS A5.8. (5) Flared joints shall be made by a tool designed for the operation. (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 28, 8-13-21)

Omaha Municipal Code § 49-812 Ductile iron pipe.

Sec. 49-812. - Ductile iron pipe. All ductile iron water pipe shall conform to ANSI A21.51 and the following provisions: (a) Pipe used for water main (service) shall be at least class 52, cement lined in compliance with the AWWA C104. (b) Pipe used for building drains and building sewers shall be at least class 50 pipe with fittings conforming to ASTM C600. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-813 Durham system installation.

Sec. 49-813. - Durham system installation. The following provisions shall apply to Durham plumbing system installation: (a) Soil and waste fittings shall be recessed, drainage type, (either plain, tar coated or galvanized) and shall be long turn pattern where possible. Exception: expansion joints. (b) Pipe installed above ground shall be galvanized steel, galvanized wrought iron, or cast-iron. (c) Underground piping shall be bell and spigot cast-iron or hubless cast-iron. (d) Vent pipe shall be galvanized steel, galvanized wrought iron, or cast-iron. (e) Vent fittings shall be plain cast iron, recessed drainage or galvanized malleable screw type. (f) Screw pipe shall be thoroughly reamed before being placed in position. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-814 Flexible water supplies.

Sec. 49-814. - Flexible water supplies. The following provision shall apply where flexible supplies are used for the final fixture water supply connection from the wall or floor to the fixture: (a) Exposed water tube from the wall or floor to a plumbing fixture shall conform to NSF 61 and be made from one of the following materials: (1) Type L soft copper tubing. (2) Braided stainless steel reinforced nylon hose with stainless steel threaded connectors. (3) Reinforced nylon hose with a polymer braiding and stainless steel connections conforming to ASME A1 12.18.6. (b) Lengths shall not exceed the following measurements: (1) Refrigerator ice maker: Ten feet. (2) Under-counter dishwashers: Five feet. (3) All other connections: Three feet. Exception: Appliance supplies of Type L soft copper may exceed the three feet where necessary for structural or mobility reasons. Connections shall be soldered, flared, screwed, or ground joint. (c) Water heater, water conditioners, point-of-use appliances and commercial kitchen fixtures and equipment shall not be connected by a flexible connection. (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 29, 8-13-21)

Omaha Municipal Code § 49-815 Final fixture water supply connection.

Sec. 49-815. - Final fixture water supply connection. There shall be no connections or piping arrangement at the fixture, hose bibs, water mixing or tempering devices that would allow hot water to enter the cold water system. (Exception: connection at the water heater.) (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-816 Flashing.

Sec. 49-816. - Flashing. The following provisions shall apply to flashing installation: (a) Stack vents and vent stacks. (1) Pipe passing through a built-up roof shall be made water tight with lead flashing weighing at least 2½ pounds per square foot, properly soldered, with a sleeve extending up, over, and into the top of the pipe. (2) Pipe passing through an EPDM roof membrane shall be sealed with a molded EPDM flashing clamped to the pipe or an appropriately sized piece of uncured neoprene membrane directly adhered to the pipe. (3) The board shall approve all flashing systems as to design and material used. The board will keep a list of all approved flashings on file with the board secretary. The list of approved flashings shall be made available on request. (4) Plastic piping passing through a roof and not completely covered by the flashing shall be protected by a water-base, synthetic latex paint. (5) Flashings on pre-engineered metal buildings shall be approved by the manufacturer of the building. (b) Rainwater (roof) drains. (1) Roof drains installed with a built-up roof: (i) Shall be made tight with a four-pound sheet lead flashing or a flashing manufactured by laminating asphalt impregnated roofing felt to a non-plasticized chlorinated polyethylene with a nominal thickness of 0.040 inch. (ii) Flashings must extend a minimum 12 inches beyond the outer circumference of the stone guard clamping collar. (iii) Flashings shall be securely fastened to the drain body with the clamping collar. (2) Sheet lead shall conform to federal specifications, QQ-L-201. (3) EPDM roofing needs no additional flashing. The EPDM roofing shall be fastened to the drain body with an approved stone guard clamping collar. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-817 Reserved.

Omaha Municipal Code § 49-818 Galvanized grooved joining system.

Sec. 49-818. - Galvanized grooved joining system. The following provisions shall apply to galvanized grooved joining systems: (a) Water supply fittings shall be full flow, ductile iron, hot dipped galvanized conforming to ASTM A153 or zinc electroplating conforming to ASTM B-633 and NSF 61. (b) Couplings shall be rigid ("zero-flex") style consisting of a synthetic rubber gasket and ductile cast iron housing conforming to ASTM A-536. (c) Gaskets shall be molded of an EPDM compound conforming to ASTM D-2000 and designed for domestic water temperatures between 30 degrees and 230 degrees Fahrenheit. (d) Couplings shall be installed according to the manufacturer's instructions. Couplings shall form a system capable of withstanding a 300 psig static test. (e) Pipe used for water supply systems shall be Schedule 40 galvanized steel pipe conforming to ASTM A53 and NSF 61. (f) May only be installed on the downstream side of the first valve or bypass tee after the meter. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-819 Galvanized pipe.

Sec. 49-819. - Galvanized pipe. Galvanized schedule 40 (IPS) shall conform to NSF 61 and ASTM A53 standard specifications for welded and seamless steel pipe. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-820 Hangers and rods.

Sec. 49-820. - Hangers and rods. All piping support methods shall maintain piping alignment and prevent sagging. Hangers, clamps, supports, etc., shall comply with Manufacturer's Standardization Society of the Valve and Fitting Industry (MSS) Standard Practices and shall be of sufficient strength to support the weight of the pipe and its contents. Piping shall be isolated from incompatible materials (i.e. dissimilar metals). The pipe shall not be hung, clamped or supported from other pipes or the rod that supports them. No other items or system can be supported from the plumbing piping or its supports. Except as otherwise indicated, factory fabricated pipe hangers, clamps, and supports, etc., shall be compliant with the following (MSS) standard practices: (a) MSS SP-58; Pipe Hangers and Supports - Materials, Design and Manufacture. (b) MSS SP-69; Pipe Hangers and Supports - Selection and Application. (c) MSS SP-89; Pipe Hangers and Supports - Fabrication and Installation Practices. (d) MSS SP-90; Guidelines on Terminology for Pipe Hangers and Supports. Hanger rod sizes shall be at least as shown in Table 49-820 below: Table 49-820 Hanger Rod Sizes Pipe Size (inches) | Rod Size (inches) ½ to 4 | ⅜ 5 to 6 | ½ 8 to 12 | ⅝ 14 and larger | Sized by a licensed structural engineer (e) Plumbing piping hanger allowable forces. All pipe hanger connections to structure should be designed to accommodate the maximum loads in Table 49-822(e) below: Table 49-822(e) Rod Size | Maximum load (lbs) ¼" | 240 ⅜" | 610 ½" | 1130 ⅝" | 1810 ¾" | 2710 ⅞" | 3770 (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-821 High density polyethylene plastic pipe (HDPE).

Sec. 49-821. - High density polyethylene plastic pipe (HDPE). (a) The following provisions shall apply to HDPE SDR 17 for sanitary and storm sewers: (1) Pipe and fittings shall conform to ASTM F-714, ASTM D1248, ASTM D3550 Standards. (2) All sections of pipe shall be assembled and joined on the job site. (3) Joints shall be accomplished by heating and butt-fusion or electro-fusion in strict compliance with the manufacturer's required methods. (4) Joint strength shall be equal to or greater than the pipe strength. (5) All licensed plumbers and sewer layers shall be manufacturer-trained and certified in butt-fusion or electro-fusion methods prior to installing these joints. (6) The bead on the inside of the pipe shall be removed. (7) May be used only in conjunction with a directional boring and pipe bursting method when repairing an existing line. (b) The following provisions shall apply to smooth interior corrugated polyethylene pipe and fittings used for storm sewers only. (1) For recycled resin pipe sizes four inches to 60 inches in diameter, pipe shall conform to ASTM F2648, (2) For virgin resin pipe sizes four inches to ten inches in diameter, pipe shall conform to AASHTO M-252 Type S. (3) For virgin resin pipe sizes 12 inches to 60 inches in diameter, pipe shall conform to AASHTO M-294 Type S or ASTM F2306. (4) Installation shall be in accordance with section 49-1734 and as recommended by the pipe manufacturer. (5) There shall not be more than a five percent deflection in the pipe after installation. (c) The following provisions shall apply to perforated smooth interior corrugated polyethylene (HDPE) pipe and fittings used for sub-soil drains only. (1) For recycled resin sizes four inches through 60 inches shall comply with ASTM F2648. (2) For virgin resin sizes four inches through ten inches shall comply with ASTM M252 Type S. (3) For virgin resin sizes 12 inches and larger shall comply with AASHTO M294 Type S or ASTM F2306. (4) All fittings shall be compatible and provided by the pipe's manufacturer. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-822 Hubless cast-iron soil pipe and fittings.

Sec. 49-822. - Hubless cast-iron soil pipe and fittings. Hubless cast-iron soil pipe and fittings may be used for drain, soil, waste and vent piping in all buildings, subject to the following: (a) Hubless cast-iron soil pipe and fittings shall conform to the Cast-Iron Soil Pipe Institute Standard Specification No. 301-12, ASTM Standard A888-12 and shall be third party certified in accordance with Annex A1 of ASTM A888-12. The manufacturer of pipe and fittings shall supply a report to the chief plumbing inspector on a quarterly basis showing compliance with ASTM Standard A48-12. (b) Support: (1) Horizontal pipe above ground. (i) When the pipe length exceeds four feet, pipe shall be supported on both sides of each joint. (See Figure 49-822(b)(1)(i).) (ii) When possible, the hanger shall be within 18 inches of the joint. When not possible, the distance between the hangers shall be 60 percent of the pipe length. (See Figures 49-822(b)(1)(ii)-1 and 49-822(b)(1)(ii)-2.) (iii) Single hanger will be required for pipe and fittings no more than four feet in length. (2) Vertical pipe above ground. (i) All vertical pipe shall be secured at no more than 12-foot intervals to ensure system alignment and adequate support for the pipe weight and its contents. (ii) In multi-story structures, floor clamps (also known as friction clamps), are required for vertical piping at each floor. (See Figure 49-822(b)(2).) (3) Horizontal pipe underground. The entire length of the pipe shall be continuously supported on stable grade. (i) Bedding material may consist of dirt, sand, gravel, or crushed rock. Backfill and bedding material shall not exceed one and one-quarter inches in diameter. No frozen fill material is acceptable. (ii) Pipe shall not be installed directly on mud, muck, standing water, or frozen ground. If such an unstable condition exists, the trench shall be over-excavated at least six inches and bedding material as listed above other than dirt shall be placed in the trench to support the entire length of the pipe. (4) Sway bracing. Adequate provision shall be made to prevent shear under the following conditions: (i) Where components are suspended by non-rigid hangers in excess of 18 inches in length, the hangers shall be suitably braced against horizontal movement (sway bracing). Exception: Vent piping and 1½-inch and two inch waste lines serving a single fixture not receiving the discharge of a clothes washer. (ii) Closet bends, traps, trap-arms and similar branches must be firmly secured against movement in any direction. Closet bends shall be stabilized by firmly strapping and blocking. (iii) Pipe and fittings five inches and larger shall be braced at every branch opening or change of direction by the use of braces, blocks, rodding (or other suitable method) as necessary to prevent movement or joint separation. (See Figure 49-822(b)(4).) (c) The pipe shall be positioned so that the identification markings on the pipe are readily visible for inspection. (d) A fixture trap must be connected to the drainage system with a threaded connection. Exceptions: (1) A hubless coupling may be used for the final fixture connection for pre-molded shower pans or enclosures, roof drains and water closet flanges. (2) PVC schedule 40 tub waste and overflow and floor drains aboveground may be connected by means of an approved hubless transition coupling. (e) The minimum size waste, soil, or vent below grade shall be two inches. (f) Hubless couplings shall conform to the following provisions: (1) Above ground shall comply with Cast-Iron Soil Pipe Institute Standard Specification (CISPI) No. 310-12 and ASTM C564 and shall be third party certified in accordance with Annex A1 of CISPI Standard 310. (2) Below ground shall have four bands and comply with ASTM C1540. (3) A no-hub reducing coupling may only be used on horizontal piping. (g) Connection of hubless cast iron and another approved material. (1) Shall be made with a solid band stainless steel transition coupling complying with ASTM C1277. (2) For remodeling an existing plumbing system, a solid band 302 stainless steel transition coupling may be used to connect new materials to an existing lead waste pipe provided the transitioning coupling is sized to fit the lead waste. (3) When connecting to existing 2½ inches Durham waste or vent lines, a solid band stainless steel transition coupling shall be used. The board recognizes the limited availably of 2½ inches fittings so one of the following procedures may be used: (i) For vertical waste or vent piping, a three-inch by two-inch or a three by 1½-inches sanitary tee with an approved reducing transition coupling provided that a waste opening is above the tee. If there is no waste opening above the tee, a cleanout shall be installed above the tee. (ii) For horizontal vent piping a three-inch by two-inch or a three by 1½-inches sanitary tee with an approved reducing transition coupling, only when the branch is facing down. No waste lines shall connect to a horizontal 2½ inch waste using this procedure, (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-823 Hub and spigot cast-iron soil pipe.

Sec. 49-823. - Hub and spigot cast-iron soil pipe. (a) Pipe and fittings shall be tar-coated, conform to ASTM Standard A74-13 and third party certified in accordance with Annex A1 of ASTM A74. (b) Support. (1) Above ground pipe and fittings: (i) Horizontal pipe: All horizontal pipes shall be supported at no more than five-foot intervals or at each bell with no more than ten-foot intervals. Supports shall be placed at the joint where possible and shall be adequate to maintain alignment and prevent sagging. (See Figure 49-823 (b)(1)(i).) When installed with compression gaskets, the requirements for sway bracing and blocking shall be as required for hubless cast iron. (See section 49-822.) (ii) Vertical pipe: All vertical pipe shall be secured at no more than 12-foot intervals to ensure system alignment and adequate support for the pipe weight and its contents. In multi-story structures, floor clamps (also known as friction clamps), are required for vertical piping at each floor. (See Figure 823(b)(1)(ii).) (c) Horizontal underground pipe: (1) Bedding: (i) The entire length of the pipe shall be continuously supported on stable grade. (ii) Bedding material may consist of dirt, sand, gravel, or crushed rock. Backfill and bedding material shall not exceed 1½-inches in diameter. No frozen fill material is acceptable. (iii) Pipe shall not be installed directly on mud, muck, standing water, or frozen ground. If such an unstable condition exists, the trench shall be over-excavated at least six inches and bedding material as listed above other than dirt shall be placed in the trench to support the entire pipe length. (d) Joints shall be made as follows: (1) Lead and oakum. (i) After properly cleaning the hub and the spigot end of the pipe or fitting, oakum shall be placed in the joint and packed using a packing iron and hammered until it forms a uniform surface, one inch from the top of the hub. (ii) Pour molten lead into the joint at one spot between the hub and spigot in one continuous pour until it arches slightly above the top of the hub. (iii) When the lead has cooled, caulk the joint on the inside and then the outside edges using a 16-ounce ball peen hammer and appropriate caulking irons. (iv) Caulking lead shall conform to CS94041 or Lead Industries Association standards. (2) Compression joints. (i) When using cut pipe, the sharp edge must be removed before joining. (ii) After properly cleaning the hub and spigot, insert the gasket into the hub making sure the retaining flange or collar of the gasket is adjacent to the face of the hub. (iii) After using a commercial lubricant applied only on the inside of the gasket (unless the pipe manufacturer also recommends lubricating the spigot of the pipe or fitting), align the spigot and hub in a straight line and force the spigot end of the pipe or fitting into the gasket according to the manufacturer's recommendation. (iv) Gaskets should be stored in a clean, dry area, in an un-deformed condition away from excessive heat. (v) All changes of direction should be restrained. (vi) Material for compression gaskets shall conform to ASTM C-564. (vii) May be used for the final connection for roof drains, floor drains, shower drains and closet flanges only. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-824 Manholes.

Sec. 49-824. - Manholes. All manholes shall comply with the following provisions: (a) City of Omaha Standard Specifications for Public Works Construction, latest version. (b) City of Omaha Standard Plates for Construction, latest version. (c) Variances to these Standard Specifications and Plates must be approved in writing by the public works director. (Ord. No. 40524, § 1, 10-20-15; Ord. No. 41963, § 1, 9-17-19)

Omaha Municipal Code § 49-825 Plastic pipe and fittings for soil, waste and vents.

Sec. 49-825. - Plastic pipe and fittings for soil, waste and vents. ABS and PVC shall not be co-mingled, inserted or mixed with other materials. When connecting to existing plastic systems, all pipe and fittings shall be the same material as the existing system. Plastic pipe installations shall comply with the following standards: (a) Polyvinyl chloride (PVC). (1) Shall be schedule 40 (IPS). (2) Shall meet ASTM Standard D2665, F891. (3) Solvent cement shall meet ASTM D2564. (4) Primers shall be clear and meet ASTM F656. (5) All solvent cement joints shall be made according to ASTM D2855. (6) Shall not be installed in return air plenums except in single-family dwellings. (b) Acrylonitrile-butadiene-styrene (ABS). (1) Shall be schedule 40 (IPS). (2) Shall meet ASTM Standard D2661 or F628 or F1488. (3) Cement shall meet ASTM D2235. (4) All cement joints shall be made according to ASTM D2661 and F402. (5) Shall not be installed in return air plenums except in single-family dwellings. (c) Storage and protection of plastic. (1) Pipe and fittings should not be stored in direct sunlight. (2) Pipe shall be stored in such a manner as to prevent sagging or bending. (3) Plumbing vents exposed to sunlight shall be protected by a water based synthetic paint. (4) Pipe passing through wood studs or plates shall be protected from puncture by a steel plate at least one-sixteenth inch thick. (d) Thermal expansion. (1) Support pipe according to subsection (f) below, but do not rigidly restrain the pipe at branches or change of direction. (2) Pipes shall not be rigidly anchored in walls. All holes shall be adequately sized to allow for free movement. (3) Tables 49-825(d)(3)-1 and 49-825(d)(3)-2 below are provided to show examples of thermal expansion. Temperatures listed are the maximum expected operating range. Consult the manufacturer's data for the material to be installed. _____ TABLE 49-825(d)(3)-1 Thermal Expansion for PVC (Inches) Temperature Range Length (feet) | 40F | 50F | 60F | 70F | 80F | 90F | 100F 20 | 0.278 | 0.348 | 0.418 | 0.487 | 0.557 | 0.626 | 0.696 40 | 0.557 | 0.696 | 0.835 | 0.974 | 1.114 | 1.235 | 1.392 60 | 0.835 | 1.044 | 1.253 | 1.462 | 1.670 | 1.879 | 2.088 80 | 1.134 | 1.392 | 1.670 | 1.949 | 2.227 | 2.506 | 2.784 100 | 1.392 | 1.740 | 2.088 | 2.436 | 2.784 | 3.132 | 3.480 TABLE 49-825(d)(3)-2 Thermal Expansion for ABS (Inches) Temperature Range Length (feet) | 40F | 50F | 60F | 70F | 80F | 90F | 100F 20 | 0.536 | 0.670 | 0.804 | 0.938 | 1.072 | 1.206 | 1.340 40 | 1.070 | 1.340 | 1.610 | 1.880 | 2.050 | 2.420 | 2.690 60 | 1.609 | 2.010 | 2.410 | 2.820 | 3.220 | 3.620 | 4.020 80 | 2.143 | 2.680 | 3.220 | 3.760 | 4.290 | 4.830 | 5.360 100 | 2.680 | 3.350 | 4.020 | 4.700 | 5.360 | 6.030 | 6.700 _____ (e) Below ground installation. (1) Pipe shall be secured to the bottom of the trench at no more than eight-foot intervals and backfilled to the pipe's spring line for ground work inspection. (2) Bedding material may consist of dirt, sand, gravel, or crushed rock. Backfill and bedding material shall not exceed one and one-half inches in diameter. No frozen fill material is acceptable. (3) Pipe shall not be installed directly on mud, muck, standing water, or frozen ground. If such an unstable condition exists, the trench shall be over-excavated a minimum of six inches and bedding material as listed above other than dirt shall be placed in the trench to support the entire length of the pipe. (4) Provide a minimum one-half inch clearance around the entire outer circumference of the pipe or fitting when penetrating concrete. Space between the pipe and concrete shall be sealed, insulated or caulked. Exceptions are floor drains and closet bends. (5) The pipe shall be positioned in the trench so that the identification markings on the pipe are readily visible for inspection. (6) The minimum size waste, soil, or vent below grade shall be two inches (IPS). (7) No vent type fittings or short turn elbows will be allowed below grade except that short turn 90's will be allowed for closet bends. (8) Threaded fittings shall not be used. (f) Support above ground. (1) Horizontal: Plastic pipe shall be supported at no more than four-foot intervals. (See Figure 49-825(f)(1).) (2) Vertical: Plastic pipe two inches and less shall be supported at no more than four-foot intervals. Sizes above two inches in diameter shall be supported at no more than eight-foot intervals. (See Figure 49-825(f)(2)) (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 30, 8-13-21)

Omaha Municipal Code § 49-826 Polyethylene crosslink pipe SDR9 (a) (PEX-a).

Sec. 49-826. - Polyethylene crosslink pipe SDR9 (a) (PEX-a). PEX-a SDR9 may be used as permitted in section 49-555 and 49-556 for potable water and for high purity water. It shall not be co-mingled, inserted or mixed with other materials except as permitted below. Fittings and connections shall comply with the following standards and provisions: (a) Shall carry the Material Designation Code PEX 5206. (b) Shall not be installed using a manifold system. (c) Shall only be permitted in sizes one-half inch through one inch. (d) Shall be rigid (straight length) 20 foot. (e) Shall be blue in color for cold lines and red in color for hot lines. (f) Shall not be used with instantaneous-type (coil or immersion) water heaters. (g) Soldered metal fittings shall not be installed closer than 18 inches. There shall be a minimum of 12 inches from the connection to the water heater and PEX piping. (h) It shall only be used above ground. (i) The piping from the shower or tub valve to the shower head and tub spout shall be copper pipe and fittings. (j) Cold expansion fittings with PEX reinforcing rings shall comply with ASTM F 1960 and be engineered polymer (EP). (k) When connecting to an existing PEX systems, all additional pipe, fittings and connections shall be the same type and material as the existing system. (l) Support: (1) Horizontal pipe: Each pipe shall be supported individually at no more than 32 inches intervals with a minimum clear spacing of three inches between parallel lines. (2) Vertical pipe: Each pipe shall be supported individually at no more than 48 inches intervals with a minimum clear spacing of three inches between parallel lines. (m) Thermal expansion: (1) Support pipe according to subsection (1) above, but do not rigidly restrain the pipe at branches or change of direction. (2) Do not anchor pipe rigidly in walls. All holes shall be adequately sized to allow for free movement. (3) Tables 49-826(m) below provides expansion loop requirements. (See Figure 49-826(m)(3).) (4) There shall not be any branches connected to the expansion loop. _____ Table 49-826(m) Length of Run (feet) 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | 110 ½ | A | 13.9 | 19.7 | 24.0 | 28.0 | 31.0 | 34.0 | 37.0 | 39.5 | 42.0 | 44.0 | 46.0 B | 3.0 | 4.0 | 5.0 | 6.0 | 6.2 | 6.8 | 7.4 | 7.9 | 8.4 | 8.8 | 9.2 ¾ | A | 16.5 | 24.0 | 28.5 | 33.0 | 37.0 | 40.5 | 43.5 | 46.5 | 49.5 | 52.0 | 54.5 B | 3.5 | 5.0 | 6.0 | 7.0 | 7.4 | 8.1 | 8.7 | 9.3 | 9.9 | 10.4 | 10.9 1 | A | 18.5 | 26.5 | 32.5 | 37.5 | 42.0 | 46.0 | 49.5 | 53.0 | 56.0 | 59.0 | 62.0 B | 4.0 | 5.5 | 7.0 | 8.0 | 8.4 | 9.2 | 9.9 | 10.6 | 11.2 | 11.8 | 12.4 1¼ | A | 20.5 | 29.0 | 36.0 | 41.5 | 46.0 | 50.5 | 54.5 | 58.5 | 62.0 | 65.5 | 68.5 B | 4.1 | 5.8 | 7.2 | 8.3 | 9.2 | 10.1 | 10.9 | 11.7 | 12.4 | 13.1 | 13.7 1½ | A | 22.5 | 32.0 | 39.0 | 45.0 | 50.5 | 55.0 | 59.5 | 63.5 | 67.5 | 71.0 | 75.0 B | 4.5 | 6.4 | 7.8 | 9.0 | 10.1 | 11.0 | 11.9 | 12.7 | 13.5 | 14.2 | 15.0 2 | A | 25.5 | 36.5 | 44.5 | 51.5 | 57.5 | 63.0 | 68.0 | 72.5 | 77.0 | 81.0 | 85.0 B | 5.1 | 7.3 | 8.9 | 10.3 | 11.5 | 12.6 | 13.6 | 14.5 | 15.48 | 16.2 | 17.0 _____ (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 31, 8-13-21)

Omaha Municipal Code § 49-827 Polyvinyl chloride (PVC) pipe and fittings for sanitary and storm sewers.

Sec. 49-827. - Polyvinyl chloride (PVC) pipe and fittings for sanitary and storm sewers. (a) Polyvinyl chloride (PVC) sizes four inches and larger. (1) ASTM D3034 SDR 26. (2) ASTM D2665 Schedule 40. (3) Pipe installation shall be in accordance with section 49-1734. (4) All solvent cement shall meet ASTM D2564. (5) All solvent cement joints shall be made according to ASTM D2855 and F402. (6) Primers shall be purple in color and meet ASTM F656. (7) The pipe shall be positioned in the trench so that the identification markings on the pipe are readily visible for inspection. (b) Smooth interior corrugated polyvinyl chloride (PVC) pipe and fittings may be used for storm sewers only. (1) Such pipe shall conform to ASTM F949. (2) All gaskets for joining the pipe and fitting shall conform to ASTM F477. (3) Installation of such pipe and fittings shall be in accordance with section 49-1734. (c) PVC Corrugated pipe with a smooth interior for sub-soil drains. (1) Conforming to ASTM F949 or F794. (2) All fittings conformed to ASTM949 section 5.2.3 and F794, section 7.2.4. (3) All fittings shall be compatible and provided by the pipe's manufacturer. (d) Perforated PVC pipe for sub-soil drains conforming to ASTM D3034 SDR35. (e) PVC drainage structures. Engineered PVC drainage structures may be used for storm sewer applications and shall comply with the following standards and provisions: (1) These structures shall be manufactured from pipe stock conforming to ASTM D1784 cell class 12454 material, utilizing a thermo-molding process to reform the pipe stock to the specified configuration. (2) The drainage pipe connection stubs shall be manufactured from the same PVC pipe stock material. The stubs for a prefabricated structure shall be joined to the main body of the drain basin or catch basin utilizing a solvent weld joint. PVC cement and primer shall be used to create the solvent weld joint and shall conform to ASTM D2564 and ASTM F656 respectively. (3) The PVC drainage pipe connection stubs shall be formed to provide a watertight connection with the specified pipe system. This joint tightness shall conform to ASTM D3212 for joints for drain and sewer plastic pipe using flexible elastomeric seals. (4) The flexible elastomeric seals shall conform to ASTM F477 and be provided by basin manufacturer to guarantee watertight pipe connection. (5) The grates and frames furnished for all surface drainage inlets shall be made specifically for each basin so as to provide a round bottom flange that closely matches the diameter of the surface drainage inlet. (6) Grates for drain basins shall be capable of supporting H-20 wheel loading for heavy-duty traffic or H-10 loading for pedestrian traffic. 12" and 15" grates will be hinged to the frame. Ductile iron used in the manufacture of the castings shall conform to ASTM A536 grade 70-50-05. (7) For PVC structures, the backfill shall be crushed stone or other granular material meeting the requirements of Class IB material as defined in section 49-1734. (8) Bedding and backfill for surface drainage inlets shall be placed and compacted uniformly in accordance with ASTM D2321. (9) The drain basin body will be cut at the time to the final grade. (10) For H-20 load rated installations, a concrete ring will be poured under and around the grate and frame. (11) The manufacturer must provide third-party verification of structural load performance of their PVC surface drainage inlets. Providing another manufacturer's third-party verification is not acceptable. (12) Shall not be used for or a replacement for a manhole. (Ord. No. 40524, § 1, 10-20-15; Ord. No. 42654, § 32, 8-13-21)

Omaha Municipal Code § 49-828 Reinforced concrete pipe.

Sec. 49-828. - Reinforced concrete pipe. The following provisions shall be observed regarding reinforced concrete pipe: (a) Circular pipe (RCP) with an inside diameter of 36 inches and smaller shall be Class III, Wall B or C pipe as defined by ASTM C76 Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe. (b) RCP with an inside diameter of larger than 36 inches shall be Class III, Wall B or C pipe as defined by ASTM C 655 Standard Specification for Reinforced Concrete Culvert, Storm Drain, and Sewer Pipe. (c) All pipe shall be stamped with the "Q" cast certification stamp. (d) Reinforced concrete pipe shall be used for storm sewers only. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-829 Sewer taps specifications.

Sec. 49-829. - Sewer taps specifications. (a) New sewer taps: (1) Saddles shall be ductile iron conforming to ASTM 536 with a protected coat. (2) Straps (bands), bolts, nuts and washers shall be 304 stainless steel. (3) Straps (bands) shall have a minimum width of 3½ inches. (4) Gaskets shall be virgin SBR, compounded for sewer service. (5) Saddles known as "flexible" shall not be approved for use. (b) For repair see section 49-1729. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-830 Slip joints.

Sec. 49-830. - Slip joints. Slip joints may be used only on exposed tubular waste connections between the rough opening and the fixture. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-831 Stainless steel schedule 40 pipe and fittings.

Sec. 49-831. - Stainless steel schedule 40 pipe and fittings. Stainless steel fittings shall conform to ASTM A312 Schedule 40, Type 316 stainless steel butt-welded fittings, shall conform to ANSI B16.9. In addition, the following provisions shall apply: (a) Joint surfaces shall be cleaned. The joint shall be welded autogenously or with an approved filler metal as referenced in ASTM A312. (b) Joints between stainless steel and different piping materials shall be made with a mechanical compression or mechanical sealing joint. (c) Branch connections from stainless steel pipe may be made with Type 316 stainless steel weld-on outlets. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-832 Stainless steel schedule 5 pipe and fitting.

Sec. 49-832. - Stainless steel schedule 5 pipe and fitting. Stainless steel Schedule 5, Type 316 pipe conforming to ASTM A312 and ASTM A554 may be used in all sizes for both a tube grooved joining system or a press fit system for potable and non-potable water only. The following provisions shall also apply: (a) Roll grooved: (1) Fittings shall conform to ASTM A351. (2) Grooved joints shall conform to ANSI C606. (3) Gasketed mechanical couplings shall conform to ASTM F1476. (4) Components shall conform to NSF 61. (5) Installation shall utilize a single manufacturer throughout the system. (6) Installation shall be in accordance with system manufacturer's requirements. (7) Couplings shall be rigid ("zero-flex") style consisting of a ductile cast iron housing conforming to ASTM A-536 and a synthetic rubber gasket. (8) Gaskets shall be designed for domestic water service from 30 Fahrenheit to 230 degrees Fahrenheit and shall be molded of an EPDM compound conforming to ASTM D-2000. (9) Shall be used for water supply only. (10) Couplings shall be installed according to the manufacturer's instructions to produce a system capable of withstanding a 300 psig static test. (11) Shall only be installed down-stream of the first valve or bypass tee after the meter. (b) Press fit joining systems conforming to ASTM A312 and ASTM A554 may be used in all sizes following these provisions: (1) Fittings, joints and couplings shall conform to ASME B31.9. (2) Components shall conform to NSF 61. (3) Installation shall utilize a single manufacturer throughout the system. (4) Installation shall be in accordance with system manufacturer's requirements. (5) O-rings shall meet EPDM ASTM D2000. (6) Shall only be installed when the surrounding air temperature meets or exceeds 20 degrees Fahrenheit. (7) Shall not be installed below ground. (8) Shall only be installed on the downstream side of the first valve or bypass tee after the meter. (9) Pipe shall be reamed and chamfered before joining. (c) Support/hangers: (1) Horizontal tubing: Shall be supported at approximately six-foot intervals for piping 1½-inches and smaller in diameter and ten-foot intervals for piping two inches and larger in diameter. (2) Vertical tubing: Three-quarters inch and smaller in diameter shall be supported at each story or at maximum intervals of four feet and at each story or at maximum intervals of ten feet for piping one inch and larger in diameter. (3) All water lines shall have a minimum clear spacing between parallel lines of three inches for sizes one inch and smaller and six inches for sizes larger than one inch. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-833 Sisson joints.

Sec. 49-833. - Sisson joints. Sisson joints shall be used only where it is not practical to make connection otherwise. The upper portion of a stack must have a floor rest or pipe clamp placed so the upper portion of the stack cannot settle. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-834 Subsoil drain material.

Sec. 49-834. - Subsoil drain material. Subsoil drainage shall be installed using one of the materials listed below or as approved by the plumbing board. The plumbing board will keep a list of all approved materials on file with the plumbing board secretary: (a) PVC Corrugated pipe with a smooth interior and conforming to section 49-827(c). (b) Perforated PVC pipe conforming to section 49-827(d). (c) HDPE Corrugated pipe with a smooth interior and conforming to section 49-821(c). (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-835 Threaded fittings.

Sec. 49-835. - Threaded fittings. The following provisions shall be observed regarding threaded fittings: (a) Plain screwed fittings for use with wrought iron or steel pipe vents shall be cast-iron or malleable iron of standard weights and dimensions. (b) Screwed drainage fittings used on soil, waste or leaders shall be recessed drainage type with a smooth interior water way and with threads tapped out of solid metal. (c) Screwed fittings for brass or copper pipe shall be cast brass, steam pattern for water supply or vents and recessed drainage type for soil or waste. (d) Screwed fittings on water supply pipes shall be either brass or galvanized malleable iron. (e) American tapered pipe thread shall be used on all threaded fittings. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-836 Threaded joints.

Sec. 49-836. - Threaded joints. The following provisions shall apply to threaded joints: (a) Screw joints shall be American National Taper pipe thread (F.S. GGG-P, 351 a). (b) Burrs shall be removed. (c) Pipe ends shall be reamed or filed out to full size of bore, and all chips shall be removed. (d) Pipe joint compound will be permitted only on male threads. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-837 Traps and tubing.

Sec. 49-837. - Traps and tubing. Generally, all traps shall have a trap seal sized between two inches and four inches. Traps shall be located as close to the fixture waste opening as possible and shall be installed in a location for easy, accessible cleaning. The following provisions also apply: (a) Traps and tubing for buildings not rated to use plastic waste and vents shall be as following: (1) Concealed traps above the finished floor shall be service weight cast-iron soil pipe, no-hub cast-iron pipe, Durham, DWV copper, or cast brass not less than 3/32 inch thick. (2) Traps below the finished floor in ground (soil) shall be service weight cast-iron soil pipe. (3) Traps located below the finished floor in a blocked out pit, free of ground (soil) and easily accessible, may be of the same material as specified in subsection (1) above. (4) Bath tub waste and overflow shall be not less than 17 gauge brass or schedule 40 PVC plastic pipe. (5) Tubing used for tail pieces, traps and continuous waste on sinks, lavatories and similar fixtures shall be not less than 17 gauge brass. (6) Exposed traps and tubing for final fixture connection may be slip joint. (b) Traps and tubing for buildings rated to use plastic waste and vents piping may use the following materials in addition to those in subsection (a) above. (1) Concealed traps and tubing above and below the finished floor Schedule 40 PVC plastic or schedule 40 ABS for single family dwellings only. (2) Bath tub waste and overflow shall be not less than schedule 40 PVC or PVC tubular waste and overflows meeting ASTM Standard F-409 or for use in single family dwelling only Schedule 40 ABS plastic pipe or tubular waste and overflows meeting ASTM Standard F-409. (3) Tubing used for tail pieces, traps and continuous waste on sinks, lavatories and similar fixtures shall be PVC meeting ASTM Standard F-409 or for use in single family dwelling only ABS meeting ASTM Standard F-409. (4) Exposed traps and tubing for final fixture connection may be slip joint. (c) For traps and tubing for corrosive and acid waste, see article X. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-838 Transitioning.

Sec. 49-838. - Transitioning. The following provisions shall apply to the transitions specified below: (a) Steel or wrought iron to cast iron bell and spigot pipe. Joints between steel, wrought iron, or cast iron screw pipe to cast and cast iron bell and spigot pipe shall be made by means of a properly caulked joint. Screw pipe joints smaller than two inches in diameter shall be made by means of a caulking ferrule. (b) Copper to cast-iron, steel or wrought iron pipe. Joints shall be made with approved adapter fittings and caulked or screwed to cast-iron, steel or wrought iron pipe, proper transition coupling or other approved connections. (c) Brass or copper tubing to lead. Connections between brass and copper tubing to lead waste shall be made with a proper transition coupling or other approved connections. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-839 Reserved.

Omaha Municipal Code § 49-840 Valves.

Sec. 49-840. - Valves. Generally, all valves shall have the manufacturer's name with a minimum pressure rating of 250 pounds marked on valve body. Additionally, the following standards shall also apply: (a) Butterfly Valves MSS SP-67 Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.; 2011. (b) Bronze Gate, Globe, Angle and Check Valves MSS SP-80 Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.; 2008 (with 2012 Errata). (c) Cast Iron Globe & Angle Valves, Flanged and Threaded Ends MSS SP-85 Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.; 2011. (d) Ball Valves Threaded, Socket-Welding, Solder Joint, Grooved and Flared Ends MSS SP-110 Manufacturers Standardization Society of the Valve and Fittings Industry, Inc.; 2010. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-841 Vitrified clay pipe and fittings.

Sec. 49-841. - Vitrified clay pipe and fittings. The following provisions shall apply: (a) Clay bell and spigot pipe and compression joints fittings shall conform to ASTM C425. (b) Pipe installation shall be in accordance with ASTM C12. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-842 Water hammer arrestors.

Sec. 49-842. - Water hammer arrestors. The following provisions shall apply: (a) Shall conform to ASSE 1010. (b) Shall be installed where quick-closing valves are used, shall be located close to the valve and shall be accessible. (Ord. No. 40524, § 1, 10-20-15)

Omaha Municipal Code § 49-843 Water piping materials for point of use filters, RO and other high purity water system.

Sec. 49-843. - Water piping materials for point of use filters, RO and other high purity water system. All water piping materials for RO and other high purity water systems shall comply with the following material standards and provisions: (a) Residential point-of-use applications: (1) Low-density polyethylene (LDPE). (2) Linear low-density polyethylene (LLDPE). (3) All piping shall be blue in color and not larger in size than three-eighth of an inch ID. (b) Materials for whole house system shall be as stated elsewhere in this chapter. (c) Materials for commercial point-of-use applications shall be as stated elsewhere in this chapter. (Ord. No. 42654, § 33, 8-13-21)

Source: City of Omaha, Municipal Code and City Charter (Municode Library, library.municode.com)URL: https://library.municode.com/ne/omaha/codes/code_of_ordinances?nodeId=OMMUCOCHGEORVOII_CH49PL_ARTVIIIQUWEINMAFetched: 10/28/2026