WSR 98-02-055

PERMANENT RULES

BUILDING CODE COUNCIL

[Filed January 6, 1998, 11:59 a.m., effective July 1, 1998]

Date of Adoption: November 14, 1997.

Purpose: To adopt chapters 51-46 and 51-47 WAC, state adoption and amendment of the 1997 Uniform Plumbing Code and Standards; and to repeal chapters 51-26 and 51-27 WAC, state adoption and amendment of the 1991 Uniform Plumbing Code and Standards.

Citation of Existing Rules Affected by this Order: Repealing chapters 51-26 and 51-27 WAC.

Statutory Authority for Adoption: RCW 19.27.031, 19.27.074.

Adopted under notice filed as WSR 97-16-114 on August 6, 1997.

Changes Other than Editing from Proposed to Adopted Version: WAC 51-46-0103, change the term "licensing" to "certification" throughout the section and limit application to state rules and regulations by deleting the term "and local." This change brought the proposed rule into closer conformance with other state regulations and addressed concerns heard at public hearing.

WAC 51-46-0218, change definition of plumbing system to clarify that certification is not required for installation of a plumbing system outside a building but within the property lines. This change resulted from testimony at the public hearing.

WAC 51-46-0402, change subsection 402.3.1.2, exception 1, to maintain current regulation. This change resulted from testimony at the public hearing.

WAC 51-46-0793, add category "Floor Drain" to Table 7-3. This change maintains current regulation and resulted from testimony at the public hearing.

WAC 51-46-1300, delete Option 1. This change resulted from testimony at the public hearing.

WAC 51-46-97121, change subsection M 1.11.2.2 by deleting the exception. This change resulted from testimony at the public hearing.

Number of Sections Adopted in Order to Comply with Federal Statute: New 0, amended 0, repealed 0; Federal Rules or Standards: New 1, amended 0, repealed 1; or Recently Enacted State Statutes: New 0, amended 0, repealed 0.

Number of Sections Adopted at Request of a Nongovernmental Entity: New 30, amended 0, repealed 0.

Number of Sections Adopted on the Agency's own Initiative: New 31, amended 0, repealed 37.

Number of Sections Adopted in Order to Clarify, Streamline, or Reform Agency Procedures: New 28, amended 0, repealed 0.

Number of Sections Adopted using Negotiated Rule Making: New 90, amended 0, repealed 37; Pilot Rule Making: New 0, amended 0, repealed 0; or Other Alternative Rule Making: New 0, amended 0, repealed 0.

Effective Date of Rule: July 1, 1998.

January 5, 1998

Mike McEnaney

Council Chair

Chapter 51-46 WAC


STATE BUILDING CODE ADOPTION AND

AMENDMENT OF THE 1997 EDITION OF THE

UNIFORM PLUMBING CODE

NEW SECTION

WAC 51-46-001 Authority. These rules are adopted under the authority of chapter 19.27 RCW.

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NEW SECTION

WAC 51-46-002 Purpose. The purpose of these rules is to implement the provisions of chapter 19.27 RCW, which provides that the State Building Code council shall maintain the State Building Code in a status which is consistent with the purpose as set forth in RCW 19.27.020. In maintaining the codes, the council shall regularly review updated versions of the codes adopted under the act, and other pertinent information, and shall amend the codes as deemed appropriate by the council.

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NEW SECTION

WAC 51-46-003 Uniform plumbing code. The 1997 edition of the Uniform Plumbing Code, published by the International Association of Plumbing and Mechanical Officials, is hereby adopted by reference with the following additions, deletions and exceptions: Provided, That Chapters 11 and 12 of this code are not adopted. Provided further, That those requirements of the Uniform Plumbing Code relating to venting and combustion air of fuel fired appliances as found in Chapter 5 and those portions of the Code addressing building sewers are not adopted.

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NEW SECTION

WAC 51-46-007 Exceptions. The exceptions and amendments to the uniform codes contained in the provisions of chapter 19.27 RCW shall apply in cases of conflict with any of the provisions of these rules.

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NEW SECTION

WAC 51-46-008 Implementation. The Uniform Plumbing Code adopted by chapter 51-46 WAC shall become effective in all counties and cities of this state on July 1, 1998, unless local government residential amendments have been approved by the State Building Code council.

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NEW SECTION

WAC 51-46-0100 Chapter 1--Administration.

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NEW SECTION

WAC 51-46-0101 Section 101 Title, scope and general.

101.4.1.4 Conflicts Between Codes. Delete paragraph.

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NEW SECTION

WAC 51-46-0102 Organization and enforcement.

102.4 Appeals. All persons shall have the right to appeal a decision of the Administrative Authority. The jurisdiction shall have a board of appeals to hear and rule on Plumbing Code appeals. Members of the board shall be appointed by the jurisdiction. Decisions by the board shall be reported to the jurisdiction and administered by the Administrative Authority.

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NEW SECTION

WAC 51-46-0103 Section 103 Permits and inspections.

103.1.3 Certification. State rules and regulations concerning certification shall apply.

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NEW SECTION

WAC 51-46-0200 Chapter 2 - Definitions.

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NEW SECTION

WAC 51-46-0205 Section 205.0 - C.

Combustible Construction. Delete definition.

CPVC - Chlorinated Poly (Vinyl Chloride)

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NEW SECTION

WAC 51-46-0215 Section 215.0 - M.

Medical Gas - Compressed gasses at hospitals and similar facilities intended for inhalation or sedation including, but not limited to, analgesia systems for dentistry, podiatry, veterinary and similar uses.

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NEW SECTION

WAC 51-46-0218 Section 218.0 - P.

PEX - Crosslinked Polyethylene

Plumbing System - Includes all potable water building supply and distribution pipes, all plumbing fixtures and traps, all drainage and vent pipe(s), and all building drains including their respective joints and connection, devices, receptors, and appurtenances within the property lines of the premises and shall include potable water piping, potable water treating or using equipment, medical gas and medical vacuum systems, and water heaters: Provided, That no certification shall be required for the installation of a plumbing system within the property lines and outside a building.

PP - Polypropylene

Public or Public Use - All buildings or structures that are not defined as private or private use.

(1) General use applies to business, commercial, industrial and assembly occupancies other than those defined under heavy use. Included are the public and common areas in hotels, motels and multi-dwelling buildings.

(2) Heavy use assembly applies to toilet facilities in occupancies which place a heavy, but intermittent time-based demand on the water supply system, such as schools, auditoriums, stadiums, race courses, transportation terminals, theaters and similar occupancies where queuing is likely to occur during periods of peak use.

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NEW SECTION

WAC 51-46-0300 Chapter 3 - General regulations.

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NEW SECTION

WAC 51-46-0301 Materials - Standards and alterations.

301.1.1 Approvals. Unless otherwise provided for in this Code, all materials, fixtures or devices used or entering into the construction of plumbing and drainage systems, or parts thereof, shall be submitted to the Administrative Authority for approval and shall conform to approved nationally recognized standards, and shall be free from defects. All pipe fittings, traps, fixtures, material and devices used in a plumbing system shall be listed or labeled by a listing agency or shall be approved by the Administrative Authority.

301.1.3 Standards. Standards listed or referred to in this chapter and Table 14-1 cover materials that conform to the requirements of this Code, when used in accordance with the limitations imposed in this or other chapters thereof and their listing. Where a standard covers materials of various grades, weights, quality, or configurations, there may be only a portion of the listed standard which is applicable. Design and materials for special conditions or materials not provided for herein are allowed to be used only by special permission of the Administrative Authority after the Administrative Authority has been satisfied as to their adequacy in accordance with Section 301.2.

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NEW SECTION

WAC 51-46-0310 Workmanship.

310.4 Installation Practices. Plumbing systems shall be installed in a manner conforming to this Code and the manufacturer's instructions.

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NEW SECTION

WAC 51-46-0311 Prohibited fittings and practices.

311.4. Except as hereinafter provided in sections 908.0, 909.0 and 910.0, no vent pipe shall be used as a soil or waste pipe, nor shall any soil or waste pipe be used as a vent.

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NEW SECTION

WAC 51-46-0313 Protection of piping, materials, and structures.

313.6. No water, soil, or waste pipe shall be installed or permitted outside of a building or in an exterior wall unless, where necessary, adequate provision is made to protect such pipe from freezing. All hot and cold water pipes installed outside the conditioned space shall be insulated to a minimum R-3.

313.10.4 In exterior walls, the annular space between sleeves and pipes shall be sealed and made watertight.

EXCEPTION: Any pipe sleeve through fire resistive construction shall be sealed with an approved fire-resistive material in accordance with the Building Code.

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NEW SECTION

WAC 51-46-0314 Hangers and supports.

314.5 All piping, fixtures, appliances, and appurtenances shall be adequately supported in accordance with this Code and the manufacturer's installation instructions and approved by the Administrative Authority.

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NEW SECTION

WAC 51-46-0392 Table 3-2 Hangers and supports.

(Table 3-2)


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NEW SECTION

WAC 51-46-0316 Joints and connections.

316.1.5 Solvent Cement Plastic Pipe Joints. Plastic pipe and fittings designed to be joined by solvent cementing shall comply with this Code and the manufacturer's installation instructions.

ABS pipe and fittings shall be cleaned and then joined with listed solvent cement(s).

CPVC and PVC pipe and fittings shall be cleaned and joined with listed primer(s) and solvent cements.

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NEW SECTION

WAC 51-46-0400 Chapter 4 - Plumbing fixtures and fixture fittings.

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NEW SECTION

WAC 51-46-0402 Water-conserving fixtures and fittings.

402.0 Water-Conserving Fixtures and Fittings

402.1 The purpose of this Section shall be to implement water conservation performance standards in accordance with RCW 19.27.170.

402.2 Application.

This section shall apply to all new construction and all remodeling involving replacement of plumbing fixtures and fittings in all residential, hotel, motel, school, industrial, commercial use, or other occupancies determined by the council to use significant quantities of water. Plumbing fixtures, fittings and appurtenances shall conform to the standards specified in this section and shall be provided with an adequate supply of potable water to flush and keep the fixtures in a clean and sanitary condition without danger of backflow or cross-connection.

402.3 Water Efficiency Standards.

402.3.1 Standards for Vitreous China Plumbing Fixtures.

402.3.1.1 The following standards shall be adopted as plumbing materials, performance standards, and labeling standards for water closets and urinals. Water closets and urinals shall meet either the ANSI/ASME standards or the CSA standard.

ANSI/ASME A112.19.2M-1990 Vitreous China

Plumbing Fixtures

ANSI/ASME A112.19.6-1990 Hydraulic Requirements for

Water Closets and Urinals

CSA B45 CSA Standards on Plumbing Fixtures

402.3.1.2 The maximum water use allowed in gallons per flush (gpf) or liters per flush (lpf) for any of the following water closets shall be the following:

Tank-type toilets 1.6 gpf/6.0 lpf

Flushometer-valve toilets 1.6 gpf/6.0 lpf

Flushometer-tank toilets 1.6 gpf/6.0 lpf

Electromechanical hydraulic toilets 1.6 gpf/6.0 lpf

EXCEPTIONS: (1) Water closets located in day care centers, intended for use by young children may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.

(2) Water closets with bed pan washers may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.

(3) Blow out bowls, as defined in ANSI/ASME A112.19.2M, Section 5.1.2.3 may have a maximum water use of 3.5 gallons per flush or 13.25 liters per flush.

402.3.1.3 The maximum water use allowed for any urinal shall be 1.0 gallons per flush or 3.78 liters per flush.

402.3.1.4 No urinal or water closet that operates on a continuous flow or continuous flush basis shall be permitted.

402.3.1.5 This section does not apply to fixtures installed before the effective date of this section, that are removed and relocated to another room or area of the same building after the effective date of this section.

402.3.2 Standards for Plumbing Fixture Fittings.

402.3.2.1 The following standards are adopted as plumbing material, performance requirements, and labeling standards for plumbing fixture fittings. Faucets, aerators, and shower heads shall meet either the ANSI/ASME standard or the CSA standard.

ANSI/ASME A112.18.1M-1989 Plumbing Fixture Fittings

CSA B125 Plumbing Fittings

402.3.2.2 The maximum water use allowed for any shower head is 2.5 gallons per minute or 9.5 liters per minute.

EXCEPTION: Emergency use showers shall be exempt from the maximum water usage rates.

402.3.2.3 The maximum water use allowed in gallons per minute (gpm) or liters per minute (lpm) for any of the following faucets and replacement aerators is the following:

Lavatory faucets 2.5 gpm/9.5 lpm

Kitchen faucets 2.5 gpm/9.5 lpm

Replacement aerators 2.5 gpm/9.5 lpm

Public lavatory faucets

other than metering 0.5 gpm/1.9 lpm

402.4 Metering Valves.

Lavatory faucets located in restrooms intended for use by the general public shall be equipped with a metering valve designed to close by spring or water pressure when left unattended (self-closing).

EXCEPTIONS: (1) Where designed and installed for use by persons with a disability.

(2) Where installed in day care centers, for use primarily by children under 6 years of age.

402.5 Accepted Plumbing Fixtures and Fixture Fittings.

Plumbing fixtures and fixture fittings which are tested in accordance with the standards listed herein and listed by either the International Association of Plumbing and Mechanical Officials or the Canadian Standards Association may be approved by the Administrative Authority for installation. Under Section 301, the Administrative Authority may approve plumbing fixtures and fixture fittings, not listed by either the International Association of Plumbing and Mechanical Officials or the Canadian Standards Association, PROVIDED the products meet the testing, and marking and labeling requirements listed in Section 402.3.

The State Building Code council will publish and distribute a current list of fixtures and fixture fittings that meet the standards listed within Section 402 and have been listed with either the International Association of Plumbing and Mechanical Officials or the Canadian Standards Association.

402.6 Implementation.

402.6.1 The standards for water efficiency and labeling contained within Section 402.3 shall be in effect as of July 1, 1993, as provided in RCW 19.27.170 and amended July 1, 1998.

402.6.2 No individual, public or private corporation, firm, political subdivision, government agency, or other legal entity, may, for purposes of use in the state of Washington, distribute, sell, offer for sale, import, install, or approve for installation any plumbing fixtures or fittings unless the fixtures or fittings meet the standards as provided for in this section.

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NEW SECTION

WAC 51-46-0412 Floor drains and shower stalls.

412.2 Location of Floor Drains. Floor drains shall be installed in the following areas:

412.2.1 Toilet rooms containing two (2) or more water closets or a combination of one (1) water closet and one (1) urinal, except in a dwelling unit. The floor shall slope toward the floor drains.

412.2.2 Laundry rooms in commercial buildings and common laundry facilities in multi-family dwelling buildings.

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NEW SECTION

WAC 51-46-0413 Minimum number of required fixtures.

413.0 Minimum Number of Required Fixtures. For minimum number of plumbing fixtures required, see Building Code Chapter 29 and Table 29-A.

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NEW SECTION

WAC 51-46-0500 Chapter 5 - Water heaters.

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NEW SECTION

WAC 51-46-0501 General.

501.0 General.

The regulations of this chapter shall govern the construction, location, and installation of all fuel burning and other water heaters heating potable water. See the Mechanical Code for combustion air and installation of all vents and their connectors. All design, construction, and workmanship shall be in conformity with accepted engineering practices and shall be of such character as to secure the results sought to be obtained by this Code. No water heater shall be hereinafter installed which does not comply in all respects with the type and model of each size thereof approved by the Administrative Authority. A list of generally accepted gas equipment standards is included in Table 14-1.

Water heaters used for space heating only are prohibited.

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NEW SECTION

WAC 51-46-0502 Definitions.

502.8 Vent - Delete definition

502.9 Vent Collar - Delete definition

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NEW SECTION

WAC 51-46-0505 Gas-fired water heater approval requirements.

505.0 Gas-Fired Water Heater Approval Requirements.

505.1 Gas fired water heaters shall conform to approved recognized applicable standards or to other standards acceptable to the Administrative Authority. Each such water heater shall bear the label of an approved testing agency, certifying and attesting that such equipment has been tested and inspected and meets the requirements of applicable standards.

505.2 Except when reconditioned by the manufacturer or the manufacturer's approved agent in accordance with its original approval requirements and reinstalled at its original location, each reconditioned water heater shall be tested for safety and conformity to approved standards, and shall bear the label of an approved testing agency certifying and attesting that such equipment has been tested and inspected and meets the requirements of applicable standards. Such label shall also state clearly that the water heater has been reconditioned, and shall give the name and address of the reconditioner. Every person applying for a permit to install a used or reconditioned water heater shall clearly state on the application for permit that such equipment is used or reconditioned.

505.3 Gas storage-type water heaters shall be provided with, in addition to the primary temperature controls, an over-temperature safety protection device constructed, listed, and installed in accordance with nationally recognized applicable standards for such devices and a combination temperature and pressure relief valve.

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NEW SECTION

WAC 51-46-0507 Combustion air.

507.0 Combustion Air. For issues relating to combustion air, see the Mechanical Code.

Delete remainder of this section.

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NEW SECTION

WAC 51-46-0509 Prohibited locations.

509.0 Prohibited Locations.

Water heaters which depend on the combustion of fuel for heat shall not be installed in a room used or designed to be used for sleeping purposes, bathroom, clothes closets or in a closet or other confined space opening into a bath or bedroom.

EXCEPTION: 1. Direct vent water heaters.

2. Water heaters installed in a closet that has a weather-stripped solid door with an approved door closing device, and designed exclusively for the water heater and where all air for combustion and ventilation is supplied from the outdoors.

3. Water heaters of the automatic storage type installed as a replacement in a bathroom, when specifically approved, properly vented and supplied with adequate combustion air.

Where not prohibited by other regulations, water heaters may be located under a stairway or landing.

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NEW SECTION

WAC 51-46-0512 Venting of water heaters.

512.0 Venting of Water Heaters Delete entire Section.

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NEW SECTION

WAC 51-46-0513 Limitations.

513.0 Limitations Delete entire Section.

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NEW SECTION

WAC 51-46-0514 Vent connectors.

514.0 Vent Connectors. Delete entire Section.

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NEW SECTION

WAC 51-46-0515 Location and support of venting system.

515.0 Location and Support of Venting System. Delete entire Section.

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NEW SECTION

WAC 51-46-0516 Length pitch and clearance.

516.0 Length Pitch and Clearance. Delete entire Section.

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NEW SECTION

WAC 51-46-0517 Vent termination.

517.0 Vent Termination. Delete entire Section

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NEW SECTION

WAC 51-46-0518 Area of venting system.

518.0 Area of Venting System. Delete entire Section

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NEW SECTION

WAC 51-46-0519 Multiple appliance venting.

519.0 Multiple Appliance Venting. Delete entire Section.

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NEW SECTION

WAC 51-46-0520 Existing venting system.

520.0 Existing Venting System. Delete entire Section.

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NEW SECTION

WAC 51-46-0521 Draft hoods.

521.0 Draft Hoods. Delete entire Section.

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NEW SECTION

WAC 51-46-0522 Gas venting into existing masonry chimneys.

522.0 Gas Venting into Existing Masonry Chimneys. Delete entire Section.

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NEW SECTION

WAC 51-46-0523 Installation.

523.0 Installation. Delete entire Section.

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NEW SECTION

WAC 51-46-0524 Mechanical draft systems.

524.0 Mechanical Draft Systems. Delete entire Section.

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NEW SECTION

WAC 51-46-0525 Venting through ventilating hoods and exhaust systems.

525.0 Venting Through Ventilating Hoods and Exhaust Systems. Delete entire Section.

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NEW SECTION

WAC 51-46-0600 Water supply and distribution.

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NEW SECTION

WAC 51-46-0603 Cross-connection control.

603.0 Cross-Connection Control.

Cross-connection control shall be provided in accordance with the provisions of this chapter. The Administrative Authority shall coordinate with the local water purveyor where applicable in all matters concerning cross-connection control within the property lines of the premises.

No person shall install any water operated equipment or mechanism, or use any water treating chemical or substance, if it is found that such equipment, mechanism, chemical or substance may cause pollution or contamination of the domestic water supply. Such equipment or mechanism may be permitted only when equipped with an approved backflow prevention device or assembly.

603.3.2 The premise owner or responsible person shall have the backflow prevention assembly tested by a Washington State Department of Health certified backflow assembly tester at the time of installation, repair, or relocation and at least on an annual schedule thereafter or more often when required by the Administrative Authority.

603.4.6.1 Potable water supplies to systems having no pumps or connections for pumping equipment, and no chemical injection or provisions for chemical injection, shall be protected from backflow by one of the following devices:

1. Atmospheric vacuum breaker

2. Pressure vacuum breaker

3. Reduced pressure backflow preventer

4. A double check valve may be allowed when approved by the water purveyor and the Administrative Authority.

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NEW SECTION

WAC 51-46-0604 Materials.

604.0 Materials

604.1 Water pipe and fittings shall be of brass, copper, cast iron, galvanized malleable iron, galvanized wrought iron, galvanized steel or other approved materials. Cast iron fittings used for water need not be galvanized if over two (2) inches (51 mm) in size. Asbestos-cement, CPVC, PEX, PE, PVC or other approved water pipe materials manufactured to recognized standards may be used for cold water distribution systems outside a building. PEX or CPVC water pipe and tubing may be used for hot and cold water distribution systems within a building. Other products not listed in this section are acceptable for their intended use, provided that such materials or distribution systems are listed and approved in accordance with nationally recognized standards. All materials used in the water supply system, except valves and similar devices shall be of like material, except where otherwise approved by the Administrative Authority.

604.11 Plastic water piping may terminate within a building, provided the connection to the potable water distribution system shall be made as near as is practical to the point of entry and shall be accessible. Barbed insert fittings with hose clamps are prohibited within the building.

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NEW SECTION

WAC 51-46-0608 Water pressure, pressure regulators, pressure relief valves, and vacuum relief valves.

608.5 Relief valves located inside a building shall be provided with a drain, not smaller than the relief valve outlet, of galvanized steel, hard drawn copper piping and fittings, CPVC, or listed relief valve drain tube with fittings which will not reduce the internal bore of the pipe or tubing (straight lengths as opposed to coils) and shall extend from the valve to the outside of the building with the end of the pipe not more than two (2) feet (610 mm) nor less than six (6) inches (152 mm) above the ground or the flood level of the area receiving the discharge and pointing downward. Such drains may terminate at other approved locations. No part of such drain pipe shall be trapped and the terminal end of the drain pipe shall not be threaded.

EXCEPTION: Replacement water heating equipment shall only be required to provide a drain pointing downward from the relief valve to extend between two feet (610 mm) and six inches (152 mm) from the floor. No additional floor drain need be provided.

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NEW SECTION

WAC 51-46-0609 Installation, testing, unions, and location.

609.6 Location. Except as provided in Section 609.7, no building supply shall be located in any lot other than the lot which is the site of the building or structure served by such building supply.

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NEW SECTION

WAC 51-46-0610 Size of potable water piping.

610.4 Where the maximum length of supply piping is two hundred (200) feet (60,960 mm) or less, each water piping system of fifty (50) fixture units or less shall be sized in accordance with the values set forth in Table 6-5. Other systems of more than fifty (50) fixture units and within the range of Table 6-5 may be sized from that table or by the method set forth in Section 610.5.

Listed engineered parallel water distribution systems may be installed in accordance with their listing.

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NEW SECTION

WAC 51-46-0700 Sanitary drainage.

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NEW SECTION

WAC 51-46-0701 Materials.

701.0 Materials.

701.1 Drainage piping shall be cast iron, galvanized steel, galvanized wrought iron, lead, copper, brass, Schedule 40 ABS DWV, Schedule 40 PVC DWV, extra strength vitrified clay pipe, or other approved materials having a smooth and uniform bore, except that:

701.1.1 No galvanized wrought iron or galvanized steel pipe shall be used underground and shall be kept at least six (6) inches (152 mm) above ground.

701.1.2 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 twelve (12) inches (305 mm) below ground.

701.1.3 Copper tube for underground drainage and vent piping shall have a weight of not less than that of copper drainage tube type DWV.

701.1.4 Copper tube for above ground drainage and vent piping shall have a weight of not less than that of copper drainage tube type DWV.

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NEW SECTION

WAC 51-46-0704 Fixture connections (drainage).

704.3 Delete paragraph.

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NEW SECTION

WAC 51-46-0710 Drainage of fixtures located below the next upstream manhole or below the main sewer level.

710.3 The minimum size of any pump or any discharge pipe from a sump having a water closet connected thereto shall be not less than two (2) inches (52 mm).

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NEW SECTION

WAC 51-46-0713 Building sewers.

Part II Building Sewers. Delete all of Part II, Sections 713 to 723, and Tables 7-7 and 7-8.

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NEW SECTION

WAC 51-46-0793 Table 7-3 Drainage fixture unit values.

(Table 7-3)




(Table 7-3, cont.)




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NEW SECTION

WAC 51-46-0800 Indirect wastes.

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NEW SECTION

WAC 51-46-0810 Steam and hot water drainage condensers and sumps.

810.4 Strainers. Every indirect waste interceptor receiving discharge containing particles that would clog the receptor drain shall have a readily removable dome strainer.

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NEW SECTION

WAC 51-46-0814 Refrigeration wastes.

814.0 Refrigeration Wastes.

For refrigeration wastes see Mechanical Code Section 1105.13.

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NEW SECTION

WAC 51-46-0815 Air-conditioning equipment.

815.0 Air-Conditioning Equipment.

815.1 Size. For sizing of equipment see Mechanical Code Table 11-E. Air conditioning waste pipes shall be constructed of materials specified in Chapter 7.

815.2 Point of Discharge. Air-conditioning condensate waste pipes shall connect indirectly to the drainage system through an airgap or airbreak to:

815.2.1 A properly trapped receptor; or

815.2.2 Other points of discharge acceptable to the Administrative Authority, including dry wells, leach pits, the tailpiece of plumbing fixtures, etc.

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NEW SECTION

WAC 51-46-0900 Vents.

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NEW SECTION

WAC 51-46-0903 Materials.

903.1.2 Delete paragraph.

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NEW SECTION

WAC 51-46-1000 Traps and interceptors.

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NEW SECTION

WAC 51-46-1003 Traps - Described.

1003.1 Each trap, except one for an interceptor or similar device shall be self-cleaning. Traps for bathtubs, showers, lavatories, sinks, laundry tubs, floor drains, hoppers, urinals, drinking fountains, dental units, and similar fixtures shall be of standard design and weight and shall be of ABS, cast brass, cast iron, lead, PP, PVC, or other approved material. An exposed and readily accessible drawn brass tubing trap, not less than 17 B&S Gauge (0.045 inch) (1.1 mm), may be used on fixtures discharging domestic sewage but shall exclude urinals. Each trap shall have the manufacturer's name stamped legibly in the metal of the trap and each tubing trap shall have the gauge of the tubing in addition to the manufacturer's name. Every trap shall have a smooth and uniform interior waterway.

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NEW SECTION

WAC 51-46-1012 Laundries.

1012.0 Laundries. Delete entire Section.

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NEW SECTION

WAC 51-46-1300 Medical gas systems. Replace entire chapter with the following.

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NEW SECTION

WAC 51-46-1301 Scope.

1301.0 Scope.

1301.1 The provisions herein shall apply to the design, installation, testing, and verification of medical gas, medical vacuum systems, and related permanent equipment for safe use in patient care hospitals, clinics, and other heath care facilities.

1301.2 The purpose of this chapter is to provide minimum requirements for the design, installation and verification of medical gas, medical vacuum systems, and related permanent equipment.

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NEW SECTION

WAC 51-46-1302 Definitions.

1302.0 Definitions.

1302.1 Installer Performance Testing - Testing conducted by the installer or representative prior to system verification using oil-free, dry nitrogen as stated in Chapter 14.

1302.2 System Verification - Testing conducted by a qualified party other than the installer or material vendor after the installer performance testing and prior to the medical gas system being put into service.

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NEW SECTION

WAC 51-46-1303 Plan review.

1303.0 Plan Review.

1303.1 Before any medical gas or medical vacuum system is installed or altered in any patient care hospital, clinic, or health care facility, duplicate plans and specifications shall be filed with the Administrative Authority. The Administrative Authority shall approve the plans prior to the issuance of any permit.

1303.2 Plans and specifications submitted to the Administrative Authority shall be of sufficient clarity to indicate the nature and extent of the work proposed and shown in detail that such work will conform to the provisions of this Code, specifically Chapter 14 of this Code.

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NEW SECTION

WAC 51-46-1304 System installation and performance testing.

1304.0 System Installation and Installer Performance Testing.

1304.1 Medical gas and medical vacuum systems shall be designed and installed in accordance with the requirements of this Chapter and the installation requirement of this Code, specifically Chapter 14 of this Code.

1304.2 A report of completion of the installer performance testing which includes the specific items in Chapter 14 shall be furnished to the Administrative Authority prior to system verification.

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NEW SECTION

WAC 51-46-1305 System verification.

1305.0 System Verification.

1305.1 Prior to any medical gas system being placed in service, each and every system shall be verified as described in Chapter 14. This verification shall be accomplished by an independent third party verification agency which is approved by the Administrative Authority.

1305.2 A report which includes at least the specific items in Chapter 14 shall be furnished to the Administrative Authority prior to final acceptance of the system.

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NEW SECTION

WAC 51-46-1400 Referenced standards.

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NEW SECTION

WAC 51-46-1401 Referenced standards.

CHAPTER 14

REFERENCED STANDARDS

Table of Contents for Table 14-1

Title Page

Appliances and Appurtenances - Plumbing 130

Backflow Preventers (see Valves and Appurtenances)

Backwater Valves (see Interceptors and Backwater Valves)

Cleanouts (see Traps and Cleanouts)

Drainage System - Sanitary 131

Drains - Storm 137

Building - Below Ground 149

Interior - Above Ground 149

Drains - Subsoil 138

Fixtures and Trim - Plumbing 139

Hangers and Supports 142

Indirect Waste Piping and Special Wastes 142

Interceptors and Backwater Valves 146

Joining Materials and Methods

Medical Gas Piping 146

Sanitary Drainage Systems 135

Sanitary Vents 154

Storm Drains 150

Subsoil Drains 139

Water Supply System 160

Joining Methods - Indirect Waste Piping and

Special Waste 145

Manholes 146

Medical Gas and Vacuum Systems 146

Miscellaneous 146

Pumps 147

Roof Drains 138

Sewer, Building (see Drainage System - Sanitary)

Sewer, Building Combined 148

Traps and Cleanouts 152

Valves and Appurtenances 159

Vents and Venting 153

Water Supply Systems 155

Wrapping and Coating 162

Footnotes to standards listed in Table 14-1 and abbreviations are at the end of the table.

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NEW SECTION

WAC 51-46-1491 Table 14-1 Standards for materials, equipment, joints and connections.

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NEW SECTION

WAC 51-46-97120 Appendix M--Storm drainage.

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NEW SECTION

WAC 51-46-97121 General.

M 1.0 General.

M 1.1 Where Required. All roofs, paved areas, yards, courts, and courtyards shall be drained into a separate storm sewer system, or into a combined sewer system where a separate storm sewer system is not available, or to some other place of disposal satisfactory to the Administrative Authority. In the case of one- and two-family dwellings, storm water may be discharged on flat areas such as streets or lawns so long as the storm water shall flow away from the building and away from adjoining property, and shall not create a nuisance.

M 1.2 Storm Water Drainage to Sanitary Sewer Prohibited. Storm water shall not be drained into sewers intended for sanitary drainage only.

M 1.3 Material Uses. Rainwater piping placed within the interior of a building or run within a vent or shaft shall be of cast iron, galvanized steel, wrought iron, brass, copper, lead, Schedule 40 ABS DWV, Schedule 40 PVC DWV, or other approved materials, and changes in direction shall conform to the requirements of Section 706.0.

M 1.4 Expansion Joints Required. Expansion joints or sleeves shall be provided where warranted by temperature variations or physical conditions.

M 1.5 Subsoil Drains.

M 1.5.1 Subsoil drains shall be provided around the perimeter of buildings having basements, cellars, or crawl spaces or floors below grade. Such subsoil drains may be positioned inside or outside of the footing, shall be of perforated, or open-jointed approved drain tile or pipe not less than three (3) inches (76 mm) in diameter, and shall be laid in gravel, slag, crushed rock, approved three-quarter (3/4) inch (19.1 mm) crushed recycled glass aggregate, or other approved porous material with a minimum of four (4) inches (102 mm) surrounding the pipe on all sides. Filter media shall be provided for exterior subsoil piping.

M 1.5.2 Subsoil drains shall be piped to a storm drain, to an approved water course, to the front street curb or gutter, or to an alley; or the discharge from the subsoil drains shall be conveyed to the alley by a concrete gutter. Where a continuously flowing spring or groundwater is encountered, subsoil drains shall be piped to a storm drain or an approved water course.

M 1.5.3 Where it is not possible to convey the drainage by gravity, subsoil drains shall discharge to an accessible sump pit provided with an approved automatic electric pump. A sump pit shall be at least fifteen (15) inches (381 mm) in diameter, eighteen (18) inches (457 mm) in depth, and provided with a fitted cover. The sump pump shall have an adequate capacity to discharge all water coming into the sump as it accumulates to the required discharge point, and the capacity of the pump shall not be less than fifteen (15) gpm (1.0 L/s). The discharge piping from the sump pump shall be a minimum of one and one-half (1-1/2) inches (38 mm) in diameter and have a union to make the pump accessible for servicing.

M 1.5.4 For separate dwellings not serving continuously flowing springs or groundwater, the sump discharge pipe may discharge onto a concrete splash block with a minimum length of twenty-four (24) inches (610 mm). This pipe shall be within four (4) inches (102 mm) of the splash block and positioned to direct the flow parallel to the recessed line of the splash block.

M 1.5.5 Subsoil drains subject to backflow when discharging into a storm drain shall be provided with a backwater valve in the drain line so located as to be accessible for inspection and maintenance.

M 1.5.6 Nothing in Section M 1.5 shall prevent drains that serve either subsoil drains or areaways of a detached building from discharging to a properly graded open area, provided that:

(1) They do not serve continuously flowing springs or groundwater;

(2) The point of discharge is at least ten (10) feet (3048 mm) from any property line; and

(3) It is impracticable to discharge such drains to a storm drain, to an approved water course, to the front street curb or gutter, or to an alley.

M 1.6 Building Subdrains. Building subdrains located below the public sewer level shall discharge into a sump or receiving tank, the contents of which shall be automatically lifted and discharged into the drainage system as required for building sumps.

M 1.7 Areaway Drains. All open subsurface space adjacent to a building, serving as an entrance to the basement or cellar of a building, shall be provided with a drain or drains. Such areaway drains shall be two (2) inches (51 mm) minimum diameter for areaways not exceeding one hundred (100) square feet (9.3 m2) in area, and shall be discharged in the manner provided for subsoil drains not serving continuously flowing springs or ground water (see Section M 1.5.2). Areaways in excess of one hundred (100) square feet (9.3 m2) shall not drain into subsoil. Areaway drains for areaways exceeding one hundred (100) square feet (9.3 m2) shall be sized according to Table M-2.

M 1.8 Window Areaway Drains. Window areaways not exceeding ten (10) square feet (0.9 m2) in area may discharge to the subsoil drains through a two (2) inch (51 mm) pipe. However, window areaways exceeding ten (10) square feet (0.9 m2) in area shall be handled in the manner provided for entrance areaways (see Section M 1.7).

M 1.9 Filling Stations and Motor Vehicle Washing Establishments. Public filling stations and motor vehicle washing establishments shall have the paved area sloped toward sumps or gratings within the property lines. Curbs not less than six (6) inches (152 mm) high shall be placed where required to direct water to gratings or sumps.

M 1.10 Paved Areas. Where the occupant creates surface water drainage, the sumps, gratings or floor drains shall be piped to a storm drain or an approved water course.

M 1.11 Roof Drainage.

M 1.11.1 Primary Roof Drainage. Roof areas of a building shall be drained by roof drains or gutters. The location and sizing of drains and gutters shall be coordinated with the structural design and pitch of the roof. Unless otherwise required by the Administrative Authority, roof drains, gutters, vertical conductors or leaders, and horizontal storm drains for primary drainage shall be sized based on a storm of sixty (60) minutes duration and 100-year return period (see Appendix D).

M 1.11.2 Secondary Roof Drainage.

M 1.11.2.1 Where parapet walls or other construction extend above the roof and create areas where storm water would become trapped if the primary roof drainage system failed to provide sufficient drainage, an independent secondary roof drainage system consisting of scuppers, standpipes, or roof drains shall be provided. Secondary roof drainage systems shall be sized in accordance with Section M 1.11.1 of this Code. Overflow drains shall be the same size as the roof drains with the inlet flow line two (2) inches (51 mm) above the low point of the roof and shall be installed independent from the roof drains.

M 1.11.2.2 Where secondary roof drainage is provided by means of roof drains or standpipes, the secondary system shall be separate from the primary system and shall discharge independently at grade or other approved point of discharge.

M 1.11.2.3 Where secondary roof drainage is provided, the overflow level(s) into the secondary system shall be determined by the structural design of the roof, including roof deflection, at a level not less than two (2) inches (51 mm) above the level of the primary drain. An allowance shall be made to account for the required overflow head of water above the secondary inlets. The elevation of the secondary inlet plus the required overflow head shall not exceed the maximum allowable water level on the roof.

M 1.11.2.4 Scuppers shall be sized as rectangular weirs, using hydraulic principles to determine the required length and resulting overflow head (see Appendix D). Secondary roof drains and standpipes shall be sized according to Table M-1. Where standpipes are used, the head allowance required under Section M 1.11.2.3 shall be not less than one and one-half (1-1/2) inches (38 mm).

M 1.11.3 Equivalent Systems. When approved by the Administrative Authority, the requirements of Sections M 1.11.1 and M 1.11.2 shall not preclude the installation of an engineered roof drainage system that has sufficient capacity to prevent water from ponding on the roof in excess of that allowed in the roof structural design with a rainfall rate of at least twice that for a 100-year, 60-minute storm and with a blockage in any single point in the storm drainage system.

M 1.12 Cleanouts.

M 1.12.1 Cleanouts for building storm drains shall comply with the requirements of this Section. Rain leaders and conductors connected to a building storm sewer shall have a cleanout installed at the base of the outside leader or outside conductor before it connects to the horizontal drain. Cleanouts shall be placed inside the building near the connection between the building drain and the building sewer or installed outside the building at the lower end of the building drain and extended to grade.

M 1.12.2 Each cleanout shall be installed so that it opens to allow cleaning in the direction of flow of the soil or waste or at right angles thereto, and except in the case of wye branch and end-of-line cleanouts, shall be installed vertically above the flow line of the pipe.

M 1.12.3 Cleanouts installed under concrete or asphalt paving shall be made accessible by yard boxes, or extending flush with paving with approved materials and be adequately protected.

M 1.12.4 Approved manholes may be installed in lieu of cleanouts when first approved by the Administrative Authority. The maximum distance between manholes shall not exceed three hundred (300) feet (91.4 m).

The inlet and outlet connections shall be made by the use of a flexible compression joint no closer than twelve (12) inches (305 mm) to, and not farther than three (3) feet (914 mm) from the manhole. No flexible compression joints shall be embedded in the manhole base.

M 1.13 All rainwater sumps serving "public use" occupancy buildings shall be provided with dual pumps arranged to function alternately in case of overload of mechanical failure.

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NEW SECTION

WAC 51-46-97122 Materials.

M 2.0 Materials.

M 2.1 Conductors.

M 2.1.1 Conductors installed aboveground in buildings shall be constructed of materials specified in Table 14-1.

M 2.1.2 The inside of conductors installed above ground level shall be of seamless copper water tube, Type K, L or M; Schedule 40 copper pipe or Schedule 40 copper alloy pipe; Type DWV copper drainage tube; service weight cast iron soil pipe or hubless cast iron soil pipe; standard weight galvanized steel pipe; or Schedule 40 ABS or Schedule 40 PVC plastic pipe.

M 2.2 Leaders.

M 2.2.1 Leaders shall be constructed of materials specified in Table 14-1.

M 2.2.2 Leaders shall be of seamless copper water tube, Type K, L or M; Schedule 40 copper pipe; Schedule 40 copper alloy pipe; type DWV copper drainage tube; service weight cast iron soil pipe or hubless cast iron soil pipe; galvanized steel sheet metal or copper sheet metal; standard weight galvanized steel pipe; Class DL or XL lead pipe; or Schedule 40 ABS or Schedule 40 PVC plastic pipe.

M 2.3 Underground Building Storm Drains. All underground building storm drains shall be constructed of materials specified in Table 14-1.

M 2.4 Building Storm Sewers. Building storm sewers shall be constructed of materials specified in Table 14-1.

M 2.5 Subsoil Drains.

M 2.5.1 Subsoil drains shall be constructed of materials specified in Table 14-1.

M 2.5.2 Subsoil drains shall be open-jointed or of perforated pipe, vitrified clay, plastic, cast iron, or porous concrete.

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NEW SECTION

WAC 51-46-97123 Traps on storm drains and leaders.

M 3.0 Traps on Storm Drains and Leaders.

M 3.1 Where Required. Leaders and storm drains, when connected to a combined sewer, shall be trapped. Floor and area drains connected to a storm drain shall be trapped.

EXCEPTION: Traps shall not be required where roof drains, rain leaders and other inlets are at locations allowed under Section 906.0, Vent Terminals.

M 3.2 Where Not Required. No trap shall be required for a leader(s) or conductor(s) which is connected to a sewer carrying storm water exclusively.

M 3.3 Trap Size. Traps, when installed for individual conductors, shall be the same size as the horizontal drain to which they are connected.

M 3.4 Method of Installation of Combined Sewer. Individual storm-water traps shall be installed on the storm-water drain branch serving each storm-water inlet, or a single trap shall be installed in the main storm drain just before its connection with the combined building sewer. Such traps shall be provided with an accessible cleanout on the outlet side of the trap.

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NEW SECTION

WAC 51-46-97124 Leaders, conductors, and connections.

M 4.0 Leaders, Conductors, and Connections.

M 4.1 Improper Use. Leaders or conductors shall not be used as soil, waste, or vent pipes, nor shall soil, waste, or vent pipes be used as leaders or conductors.

M 4.2 Protection of Leaders. Leaders installed along alleyways, driveways, or other locations where they may be exposed to damage shall be protected by metal guards, recessed into the wall, or constructed from ferrous pipe.

M 4.3 Combining Storm with Sanitary Drainage. The sanitary and storm drainage system of a building shall be entirely separate, except where a combined sewer is used, in which case the building storm drain shall be connected in the same horizontal plane through single wye fittings to the combined building sewer at least ten (10) feet (3048 mm) downstream from any soil stack.

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NEW SECTION

WAC 51-46-97125 Roof drains.

M 5.0 Roof Drains.

M 5.1 Material.

M 5.1.1 Roof drains shall be constructed of materials specified in Table 14-1.

M 5.1.2 Roof drains shall be of cast iron, copper or copper alloy, lead or plastic.

M 5.2 Dome or Strainer for General Use. All roof drains and overflow drains, except those draining to hanging gutters, shall be equipped with strainers extending not less than four (4) inches (102 mm) above the surface of the roof immediately adjacent to the drain. Strainers shall have a minimum inlet area above the roof level of not less than one and one-half (1-1/2) times the area of the conductor or leader to which the drain is connected.

M 5.3 Strainers for Flat Decks. Roof drain strainers for use on sun decks, parking decks, and similar areas which are normally serviced and maintained may be of the flat surface-type. Such roof drain strainers shall be level with the deck and shall have an available inlet area of no less than two (2) times the area of the conductor or leader to which the drain is connected.

M 5.4 Roof Drain Flashings. Connection between the roof and roof drains which pass through the roof and into the interior of the building shall be made watertight by the use of proper flashing material.

M 5.4.1 Where lead flashing material is used, it shall be a minimum of four (4) pounds per square foot (19.5 kg/m2).

M 5.4.2 Where copper flashing material is used, it shall be a minimum of twelve (12) ounces per square foot (3.7 kg/m2).

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NEW SECTION

WAC 51-46-97126 Size of leaders, conductors, and storm drains.

M 6.0 Size of Leaders, Conductors, and Storm Drains.

M 6.1 Vertical Conductors and Leaders. Vertical conductors and leaders shall be sized on the basis of the maximum projected roof area and Table M-1.

M 6.2 Size of Horizontal Storm Drains and Sewers. The size of building storm drains or building storm sewers or any of their horizontal branches shall be based upon the maximum projected roof or paved area to be handled and Table M-2.

M 6.3 Size of Roof Gutters. The size of semicircular gutters shall be based on the maximum projected roof area and Table M-3.

M 6.4 Side Walls Draining onto a Roof. Where vertical walls project above a roof so as to permit storm water to drain to the roof area below the adjacent roof area may be computed from Table M-1 as follows:

(1) For one (1) wall - add fifty (50) percent of the wall area to the roof area figures.

(2) For two (2) adjacent walls - add thirty-five (35) percent of the total wall areas.

(3) Two (2) walls opposite of same height - add no additional area.

(4) Two (2) walls opposite of differing heights - add fifty (50) percent of wall area above top of lower wall.

(5) Walls on three (3) sides - add fifty (50) percent of area of the inner wall below the top of the lowest wall, plus allowance for the area of wall above top of lowest wall, per (2) and (4) above.

(6) Walls on four (4) sides - no allowance for wall areas below top of lowest wall - add for areas above the top of the lowest wall per (1), (2), (4) and (5) above.

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NEW SECTION

WAC 51-46-97127 Values for continuous flow.

M 7.0 Values for Continuous Flow.

Where there is a continuous or semi-continuous discharge into the building storm drain or building storm sewer, as from a pump, ejector, air-conditioning plant, or similar device, one (1) gpm (3.8 L/min.) of such discharge shall be computed as being equivalent to twenty-four (24) square feet (2.2 m2) of roof area, based upon a rate of rainfall of four (4) inches (102 mm) per hour.

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NEW SECTION

WAC 51-46-97128 Testing.

M 8.0 Testing.

M 8.1 Testing Required. New building storm drainage systems and parts of existing systems that have been altered, extended or repaired shall be tested as described in Section M 8.2.1 to disclose leaks and defects.

M 8.2 Methods of Testing Storm Drainage Systems. Except for outside leaders and perforated or open jointed drain tile, the piping of storm drain systems shall be tested upon completion of the rough piping installation by water or air, and proved tight. The Administrative Authority may require the removal of any cleanout plugs to ascertain if the pressure has reached all parts of the system. Either of the following test methods shall be used:

M 8.2.1 Water Test. After piping has been installed, the water test shall be applied to the drainage system, either in its entirety or in sections. If applied to the entire system, all openings in the piping shall be tightly closed except for the highest opening, and the system shall be filled with water to the point of overflow. If the system is tested in sections, each opening shall be tightly plugged except for 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 ten (10) foot (3048 mm) head of water. In testing successive sections, at least the upper ten (10) foot (3048 mm) of the next preceding section shall be tested so that no joint of pipe in the building (except the uppermost ten (10) foot (3048 mm) of a roof drainage system, which shall be filled with water to the flood level of the uppermost roof drain) shall have been submitted to a test of less than a ten (10) foot (3048 mm) head of water. The water shall be kept in the system or in the portion under test for at least fifteen (15) minutes before inspection starts; the system shall then be tight at all points.

M 8.2.2 Air Test. The air test shall be made by attaching an air compressor testing apparatus to any suitable opening after closing all other inlets and outlets to the system, forcing air into the system until there is a uniform gage pressure of five (5) psi (34.5 kPa) or sufficient to balance a column of mercury ten (10) inches (254 mm) in height. This pressure shall be held without introduction of additional air for a period of at least fifteen (15) minutes.

M 8.2.3 Exceptions. When circumstances exist that make air and water tests, described in Sections M 8.2.1 and M 8.2.2 above, impractical, and for minor maintenance, repairs and installations, the Administrative Authority may perform the inspection as considered advisable by said authority to assure that the work has been in accordance with provisions of this Code.

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NEW SECTION

WAC 51-46-97129 Tables M-1 through M-3.

Table M-1 - Sizing roof drains, leaders

and vertical rainwater piping.


(Table M-1)


Table M-1 (Metric) - Sizing roof drains, leaders

and vertical rainwater piping.


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Table M-2 Sizing of horizontal rainwater piping.


(Table M-2)


Table M-2 (Metric) Sizing of horizontal rainwater piping.


(Table M-2 (Metric))


Table M-3 Size of gutters.


(Table M-3)


Table M-3 (Metric) Size of gutters.


(Table M-3, (Metric))


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Chapter 51-47 WAC


STATE BUILDING CODE ADOPTION OF APPENDIX I OF THE 1997 EDITION OF THE UNIFORM PLUMBING CODE

NEW SECTION

WAC 51-47-001 Authority. These rules are adopted under the authority of chapter 19.27 RCW.

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NEW SECTION

WAC 51-47-002 Purpose. The purpose of these rules is to implement the provisions of chapter 19.27 RCW, which provides that the State Building Code council shall maintain the State Building Code in a status which is consistent with the purpose as set forth in RCW 19.27.020. In maintaining the codes, the council shall regularly review updated versions of the codes adopted under the act, and other pertinent information, and shall amend the codes as deemed appropriate by the council.

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NEW SECTION

WAC 51-47-003 Uniform plumbing code standards. The 1997 edition of the Uniform Plumbing Code Standards (Appendix I), published by the International Association of Plumbing and Mechanical Officials is hereby adopted by reference.

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NEW SECTION

WAC 51-47-007 Exceptions. The exceptions and amendments to the Uniform Codes contained in the provisions of chapter 19.27 RCW shall apply in cases of conflict with any of the provisions of these rules.

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NEW SECTION

WAC 51-47-008 Implementation. The Uniform Plumbing Code Standards adopted by chapter 19.27 RCW shall become effective in all counties and cities of this state on July 1, 1998, unless local government residential amendments have been approved by the State Building Code council.

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