District of Columbia Administrative Code

E3403 INSPECTION AND APPROVAL Strike Section E3403.2 of the International Residential Code in its entirety and insert a new Section E3403.2 into the Residential Code in its place to read as follows: E3403.2 Inspection required. New electrical work and parts of existing systems af…

44 ANSI Chapter 44, REFERENCED STANDARDS is amended to insert a new referenced standard under the heading “ANSI” to read as follows: Strike Standard Reference Number LC1/CSA 6.26-13 under subheading “ANSI” in Chapter 44 Referenced Standards of the International Residential Code a…

R905 REQUIREMENTS FOR ROOF COVERINGS Insert a new Section R905.1.3 into the Residential Code to read as follows: R905.1.3 Cool Roof Requirements. Roof coverings for roof slopes less than or equal to two units vertical in 12 units horizontal (17 percent slope or less) shall comply…

ARTICLE 210 BRANCH CIRCUITS Strike Section 210.64 in Article 210 of the National Electrical Code in its entirety and insert a new Section 210.64 into the Electrical Code in its place to read as follows: 210.64 Electrical Service Areas. At least one 125-volt, single-phase, 20-ampe…

ARTICLE 408 SWITCHBOARDS, SWITCHGEAR, AND PANELBOARDS 408.23 Switchboards and Switchgears of 1000 Amperes or Larger. Subsection 408.23 is stricken in its entirety without substitution. SOURCE: Final Rulemaking published at 67 DCR 6069 (May 29, 2020 – Part 2); as amended by Final …

ARTICLE 690 SOLAR PHOTOVOLTAIC (PV) SYSTEMS Strike the text in Article 690 of the Electrical Code in its entirety, and insert the text of Article 690 “Solar Photovoltaic (PV) Systems” from NFPA 70, the National Electrical Code (2020 edition), into the 2017 DC Electrical Code SOUR…

ARTICLE 691 LARGE SCALE PHOTOVOLTAIC (PV) ELECTRIC POWER PRODUCTION FACILITY Insert new Article 691 “Large Scale Photovoltaic (PV) Electric Power Production Facility.” from NFPA 70, the National Electrical Code (2020 edition), in the 2017 District of Columbia Electrical Code. SOU…

ARTICLE 90 INTRODUCTION Strike Section 90.1(A) in Article 90 of the National Electrical Code in its entirety and insert a new Section 90.1(A) into the Electrical Code in its place to read as follows: 90.1(A) General. Administration and enforcement of the Electrical Code shall be …

101 GENERAL 101.1. Scope and Intent. Scope and intent of the Fuel Gas Code shall be governed by Chapter 1 of the Building Code, Title 12-A DCMR. 101.2 Administration and Enforcement. Administration and enforcement of the Fuel Gas Code shall be governed by Chapter 1 of the Buildin…

202 GENERAL DEFINITIONS Strike the definition of “Third Party Certified” in Section 202 of the International Fuel Gas Code in its entirety and insert a new definition of “Third Party Certified into the Fuel Gas Code in its place, to read as follows: THIRD PARTY CERTIFIED. Product…

310 ELECTRICAL BONDING Strike Sections 310.1 through 310.1.1.5 of the International Fuel Gas Code in their entirety and insert new Sections 310.1 through 310.3 in the Fuel Gas Code in their place to read as follows. 310.1 Pipe and tubing other than CSST. Each above-ground portion…

505 DIRECT-VENT, INTEGRAL VENT, MECHANICAL VENT AND VENTILATION/EXHAUST HOOD VENTING Insert a new Section 505.1.2 into the Fuel Gas to read as follows: 505.1.2 Reuse of commercial cooking fuel gas appliances. Where commercial cooking appliances equipped with standing pilot burner…

CHAPTER 8 REFERENCED STANDARDS ANSI American National Standards Institute 25 West 43rd Street 4th Floor New York, NY 10036 Strike Standard Reference Number LC1/CSA 6.26-13 under subheading ANSI in Chapter 8 of the International Fuel Gas Code in its entirety and insert new Standar…

101 GENERAL 101.1 Scope and intent. Scope and intent of the Mechanical Code shall be governed by Chapter 1 of the Building Code, Title 12-A DCMR. 101.2 Administration and enforcement. Administration and enforcement of the Mechanical Code shall be governed by Chapter 1 of the Buil…

1001 GENERAL 1001.1 Scope. This chapter shall govern the installation, repair, maintenance, testing and inspection of new and existing boilers, water heaters and pressure vessels. Exceptions. The following pressure vessels, boilers, tanks and containers are not covered by this ch…

1003 REQUIREMENTS FOR BOILERS AND PRESSURE VESSELS 1003.1 Certificates of inspection. No person shall use or cause to be used any steam boiler or unfired pressure vessel until a certificate of inspection has been issued and posted as required in this Chapter. The certificate of i…

1004 PERMITS FOR CONSTRUCTION AND INSTALLATION OF BOILERS AND UNFIRED PRESSURE VESSELS; PERMIT, INSPECTION AND MISCELLANEOUS FEES Strike Section 1004.7 of the International Mechanical Code in its entirety and insert new Sections 1004.7 and 1004.8 in the Mechanical Code in its pla…

1005 REQUIREMENTS FOR POWER BOILERS 1005.1 Steel platforms. To provide access to the top of every power boiler setting, a steel platform shall be provided, reached by means of a stationary steel stairway or ladder. The platform shall be provided with a 4 inch (102 mm) high toe gu…

1007 INSTALLATION OF LOW PRESSURE HEATING BOILERS 1007.1 Return water connection. The return water connection to every low pressure steam or hot water heating boiler shall be arranged to form what is known as a “Hartford Loop” so that the water cannot be forced out of the boiler …

1008 BOILER CONTROLS 1008.1 Steam limit control. Every steam boiler, when mechanically fired, shall be provided with a steam limit control (pressure regulator) that shall operate to prevent the steam pressure from rising above the allowable working pressure of the boiler. All con…

1010 SAFETY VALVES 1010.1 General. Each steam boiler shall be provided with one or more safety valves of the spring-pop type, having side outlet discharge, adjusted and sealed to discharge at a pressure not to exceed 15 pounds per square inch (psi) (103 kPa). Seals shall be attac…

1011 EXPLOSION DOORS 1011.1 Explosion doors. Each boiler burning fuel in suspended or gaseous form shall have one or more self-closing explosion doors located in the boiler setting and breeching as required. This section shall apply to new installations and to existing installati…

1012 INSTALLATION OF MINIATURE BOILERS 1012.1 Miniature boiler limitation. Miniature boiler is a power or high-temperature water boiler that does not exceed the size and pressure limits specified in its definition. Where any one of the limits specified in the definition is exceed…

1013 INSTALLATION OF UNFIRED PRESSURE VESSELS 1013.1 Access for inspection. Each unfired pressure vessel shall be installed so that it is available for complete external inspection of shell and heads and shall be located so that, wherever possible, there will be not less than 12 …

1014 SAFETY VALVES FOR UNFIRED PRESSURE VESSELS 1014.1 General. Each unfired pressure vessel shall be protected by safety and relief valves and shall be provided with indicating and controlling devices to ensure its safe operation. These valves and devices shall be so constructed…

1015 WATER STORAGE TANKS, WATER HEATERS, HYDRO-PNEUMATIC TANKS 1015.1 Limited capacity storage tanks. Each hot water storage tank, range boiler, or automatic storage water heater, having a nominal water-containing capacity of 120 gallons (454 L) or less shall be built for a minim…

1016 HYDRO-PNEUMATIC TANKS 1016.1 Minimum working pressure. Each hydro-pneumatic tank shall be constructed for a minimum working pressure of 150 pounds per square inch (psi) (1034 kPa). 1016.2 Label. Each hydro-pneumatic tank shall be stamped with the ASME symbol to indicate that…

1017 RELIEF VALVES, GAUGES AND SAFETY CONTROLS 1017.1 General. Each hot water storage tank and automatic water heater shall be equipped with safety controls to prevent the temperature of the water in the tank from exceeding 200 °F (93 °C) and the pressure from exceeding the maxim…

1018 WELDING ON BOILERS AND UNFIRED PRESSURE VESSELS 1018.1 Rules for welding on boilers and unfired pressure vessels. The construction, installation, repair or alteration of a boiler or unfired pressure vessel by welding shall be made in accordance with the section of the ASME C…

1019 TEST METHODS 1019.1 Welder qualification tests. The qualification tests described herein shall be specifically devised to determine a welder’s ability to produce sound welds. In order to determine the welder’s ability to make groove welds in various plate positions, tests wi…

1020 REPAIRS BY WELDING 1020.1 Repairs limited to specific types of steel. These rules shall be applicable only to repairs to steel having a known weldable quality, and are further limited to carbon steel having a carbon content of not more than 0.35 percent and to low alloy stee…

1021 WELDED REPAIRS ON BOILERS AND UNFIRED PRESSURE VESSELS 1021.1 Crack repair in stayed areas. Cracks in stayed areas shall be allowed to be repaired by welding, provided that no multiple or star cracks radiating from rivet or stay bolt holes shall be welded. 1021.2 Crack repai…

1022 EXISTING POWER BOILER INSTALLATIONS 1022.1 Maximum allowable working pressure. The maximum allowable working pressure on the shell or drum of a power boiler shall be determined by the strength of the weakest section of the structure, computed from the following information. …

1023 PARTS AND EQUIPMENT FOR EXISTING POWER BOILER INSTALLATIONS 1023.1 Fire-actuated fusible plugs. Where fire-actuated fusible plugs are used, they shall conform to the rules of the ASME Code for new construction. 1023.2 Water glass. Each steam boiler shall have at least one wa…

1024 EXISTING HEATING BOILER INSTALLATIONS 1024.1 Maximum allowable working pressure. The maximum allowable working pressure of heating boilers shall be determined as follows: Riveted Heating Boilers. The maximum allowable working pressure on the shell or drum of a riveted heatin…

1025 EXISTING MINIATURE BOILER INSTALLATIONS 1025.1 Maximum allowable working pressure. The maximum allowable working pressure on the shell or drum of a miniature boiler shall be determined in accordance with the following equation: (TS x t x E) ÷ (R x FS) = Pm where: Pm = Maximu…

1026 EXISTING UNFIRED PRESSURE VESSEL INSTALLATIONS 1026.1 Maximum allowable internal working pressures. The maximum allowable working pressure for a pressure vessel shall be determined in accordance with Sections 1026.1.1 or 1026.1.2. 1026.1.1 Standard Pressure Vessels. The maxi…

1101 GENERAL Strike Section 1101.4 of the International Mechanical Code in its entirety and insert a new Section 1101.4 into the Mechanical Code in its place to read as follows: 1101.4 Water connection. Water supply and discharge connections associated with refrigeration systems …

CHAPTER 15 REFERENCED STANDARDS Insert a new standard reference in Chapter 15 of the Mechanical Code, under the subheading NSF, NSF International, to read as follows: NSF NSF International 789 N. Dixboro Road, P.O. Box 130140 Ann Arbor, MI 48113-0140 Standard reference number Tit…

202 GENERAL DEFINITIONS Strike the definition of Third Party Certified from the International Mechanical Code in its entirety and insert a new definition of Third Party Certified into the Mechanical Code in its place to read as follows: THIRD PARTY CERTIFIED. Product or material …

301 GENERAL Strike Section 301.4 of the International Mechanical Code in its entirety and insert a new Section 301.4 into the Mechanical Code in its place to read as follows: 301.4 Plastic pipe, fittings and components. Plastic pipe, fittings and components shall be third-party c…

304 INSTALLATION Strike Section 304.11 of the International Mechanical Code, but keep the Exception therein, and insert a new Section 304.11 into the Mechanical Code in its place to read as follows: 304.11 Guards. Guards shall be provided where various components that require ser…

305 PIPING SUPPORT Strike the two rows in Table 305.4, Piping Support Spacing, of the International Mechanical Code pertaining to PE-RT and insert two new rows into Table 305.4 in the Mechanical Code in its place to read as follows: TABLE 305.4 PIPING SUPPORT SPACINGa PIPING MATE…

401 GENERAL Strike Section 401.2 of the International Mechanical Code in its entirety and insert new Section 401.2 in its place in the Mechanical Code to read as follows. 401.2 Ventilation required. Every occupied space shall be ventilated by natural means in accordance with Sect…

501 GENERAL Strike Section 501.3.1 of the International Mechanical Code in its entirety and insert new Section 501.3.1 in the Mechanical Code in its place to read as follows: 501.3.1 Location of exhaust outlets. The termination point of exhaust outlets and ducts discharging to th…

502 REQUIRED SYSTEMS Strike Section 502.20 of the International Mechanical Code in its entirety and insert a new Section 502.20 into the Mechanical Code in its place to read as follows: 502.20 Manicure and pedicure stations. Manicure and pedicure stations shall be provided with a…

505 DOMESTIC KITCHEN EXHAUST EQUIPMENT Strike Section 505.3 of the International Mechanical Code and insert a new Section 505.3 into the Mechanical Code in its place to read as follows: 505.3 Common exhaust systems for domestic kitchens located in multistory structures. Where a c…

506 COMMERCIAL KITCHEN HOOD VENTILATION SYSTEM DUCTS AND EXHAUST EQUIPMENT Strike Section 506.3.13.3 of the International Mechanical Code in its entirety and insert a new Section 506.3.13.3 into the Mechanical Code in its place to read as follows: 506.3.13.3 Termination location.…

508 COMMERCIAL KITCHEN MAKEUP AIR Strike Section 508.1.1 of the International Mechanical Code in its entirety and insert a new Section 508.1.1 into the Mechanical Code in its place to read as follows: 508.1.1 Makeup air temperature. Where the temperature of the makeup air is more…

510 HAZARDOUS EXHAUST SYSTEMS Strike Section 510.5 of the International Mechanical Code in its entirety and insert a new Section 510.5 into the Mechanical Code in its place to read as follows: 510.5 Incompatible materials and common shafts. Incompatible materials, as defined in t…