Boiler installation, classification and appliance limits

Grounded in the retrieved California Mechanical Code — click a citation to read the verbatim passage:

• CMC § 0.402 High relevance — show source text

  305**|0.402|0.527|0.652|0.745|0.995|1.245|1.481|1.959| |LENGTH (feet)|LENGTH (feet)|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR|CAPACITY IN CUBIC FEET OF GAS PER HOUR| |10
  20
  30
  40
  50|10
  20
  30
  40
  50|245
  169
  135
  116
  103|506
  348
  279
  239
  212|1030
  708
  568
  486
  431|1800
  1240
  993
  850
  754|2550
  1760
  1410
  1210
  1070|5450
  3750
  3010
  2580
  2280|9820
  6750
  5420
  4640
  4110|15 500
  10 600
  8550
  7310
  6480|32 200
  22 200
  17 800
  15 200
  13 500| |60
  70
  80
  90
  100|60
  70
  80
  90
  100|93
  86
  80
  75
  71|192
  177
  164
  154
  146|391
  359
  334
  314
  296|683
  628
  584
  548
  518|969
  891
  829
  778
  735|2070
  1900
  1770
  1660
  1570|3730
  3430
  3190
  2990
  2830|5870
  5400
  5030
  4720
  4450|12 200
  11 300
  10 500
  9820
  9280| |125
  150
  175
  200
  250|125
  150
  175
  200
  250|63
  57
  52
  49
  43|129
  117
  108
  100
  89|263
  238
  219
  204
  181|459
  416
  383
  356
  315|651
  590
  543
  505
  448|1

• California Mechanical Code High relevance — show source text

  (inch)**
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM
  3
  4
  5
  6
  7
  APPLIANCE INPUT RATING IN THOUSANDS OF BTU PER HOUR|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM|TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT BOTTOM| |NUMBER OF APPLIANCES: SINGLE
  APPLIANCE TYPE: CATEGORY I
  APPLIANCE VENT CONNECTION: TYPE B DOUBLE-WALL CONNECTOR
  TYPE B DOUBLE-WALL CONNECTOR DIAMETER –****D (inch)
  **TO BE USED WITH CHIMNEY AREAS WITHIN THE SIZE LIMITS AT

• CMC § 503.5.7.2 High relevance — show source text

  Individual or parallel pumps serving variable-flow heating-water or chilledwater systems, where the nameplate horsepower of the motor or combined parallel motors is not less than the power shown in Table E 503.5.7.2, shall have controls or devices that will result in pump motor demand of not more than 30 percent of design wattage at 50 percent of design water flow. The controls or devices shall be controlled as a function of desired flow or to

  maintain a minimum required differential pressure. Differential pressure shall be measured at or near the most remote heat exchanger or the heat exchanger requiring the greatest differential pressure. The differential pressure setpoint shall not exceed 110 percent of that required to achieve design flow through the heat exchanger. Where differential pressure control is used to comply with this section, and DDC systems are used, the setpoint shall be reset downward based on valve positions until one valve is nearly wide open.

  Exceptions:

  (1) Differential pressure set-point reset is not required where valve position is used to comply with Section E 503.5.7.4.

  (2) Variable-pump flow control is not required on heating-water pumps where more than 50 percent of annual heat is generated by an electric boiler.

  (3) Variable flow is not required for primary pumps in a primary/secondary system.

  (4) Variable flow is not required for a coil pump provided for freeze protection.

  (5) Variable flow is not required for heat recovery coil runaround loops. [ASHRAE 90.1:6.5.4.2]

  CHILLED WATER PUMPS IN THESE CLIMATE ZONES	HEATING WATER PUMPS IN THESE CLIMATE ZONES	MOTOR NAMEPLATE HORSEPOWER
  0A, 0B, 1A, 1B, 2B	NR	≥2 hp
  2A, 3B	NR	≥3 hp
  3A, 3C, 4A, 4B	7, 8	≥5 hp
  4C, 5A, 5B, 5C, 6A, 6B	3C, 5A, 5C, 6A, 6B	≥7.5 hp
  ─	4A, 4C, 5B	≥10 hp
  7, 8	4B	≥15 hp
  ─	2A, 2B, 3A, 3B	≥25 hp
  ─	1B	≥100 hp
  ─	0A, 0B, 1A	≥200 hp

  For SI units: 1 horsepower = 0.746 kW

• CMC § 92.9 High relevance — show source text

  (3) 1000 square foot (92.9 m [2] ) heating surface

  Power boilers that do not exceed one of the following limits:

  (1) 5 000 000 Btu/h input (1464 kW)

  (2) 5000 pounds steam per hour (0.6299 kg/s) capacity (3) 1000 square foot (92.9 m [2] ) heating surface

  Boilers with manholes on top of the boiler, except those described in Section 1010.2 and Section 1010.4, shall have a clearance of not less than 3 feet (914 mm) from the top of the boiler to the ceiling. 1010.4 Package Boilers, Steam-Heating Boilers, and Hot-Water-Heating Boilers. Package boilers, steam-heating boilers, and hot-water-heating boilers with no manhole on top of the shell and not exceeding one of the above limits shall have a clearance of not less than 2 feet (610 mm) from the ceiling.

  1011.0 Boilers, Stokers, and Steam Generators.

  1011.1 General. The design, installation, and operation of single burner boilers, multiple burner boilers, stokers, and atmospheric fluidized-bed boilers with not less than a fuel input rating of 12.5 E+06 Btu/h (3.663 MW) to pulverized fuel systems, fired or unfired steam generators used to recover heat from combustion turbines and to other combustion turbine exhaust systems shall be in accordance with NFPA 85. That portion of the oil-burning system supplied on boilers and covered within the scope of NFPA 85 shall be installed in accordance with NFPA 85.

  1012.0 Operating Adjustments and Instructions. 1012.1 General. Hot water boiler installations, upon completion, shall have controls set, adjusted, and tested by the installing contractor. A complete control diagram of a permanent legible type, together with complete boiler operating instructions, shall be furnished by the installer for each installation.

  1013.0 Inspections and Tests. 1013.1 General. An installation for which a permit is required shall not be put into service until it has been inspected and approved by the Authority Having Jurisdiction.

  It shall be the duty of the owner or his authorized representative to notify the Authority Having Jurisdiction that the installation is ready for inspection and test. It also shall be the duty of the owner or his authorized representative to post in a conspicuous position on the installation a notice in substantially the following form: “WARNING! THIS INSTALLATION HAS NOT BEEN INSPECTED AND APPROVED

  BY THE AUTHORITY HAVING JURISDICTION AND

  SHALL NOT BE COVERED OR CONCEALED UNTIL SO INSPECTED AND APPROVED,” and it shall be unlawful for anyone other than the Authority Having Jurisdiction to remove such notice. The Authority Having Jurisdiction shall require such tests as it deems necessary to determine that the installation is in accordance with the provision of this section. Such tests shall be made by the owner or his authorized representative in the presence of the Authority Having Jurisdiction.

  220 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  BOILERS AND PRESSURE VESSELS

• CMC § 2.3. Medium relevance — show source text

  1 to 2.3._ Exception: The gap-to-side plate thickness ratio shall be permitted to be modified for moment connections with unequal beam sizes on opposite sides of the column or when orthogonal beams acting as drag connections frame into the side plate. 8. Demand critical fillet welds {2}, {5}, {5a} and {7} shall have Magnetic Particle Testing (MT) in accordance with AWS D1.1 for procedure, technique and acceptance. Inspect the beginning and end of these welds for a 6-inch length, plus any location along the length of the weld where a start and restart is visually noted for a distance of 6 inches on either side of the start/stop location.

  2202.4.3 Modifications to AISC 358 Chapter 11 Bolted Moment Connection The bolted sideplate steel moment connection shall be permitted, provided: 1. The beams shall consist of either rolled or built-up wide flange sections. Columns shall consist of rolled or built-up wide flange sections or noncomposite built-up box or HSS with a minimum wall thickness of [3] / 4 inch (19 mm), or satisfy the requirements of width-to-thickness ratios of highly ductile members in AISC 341-16. 2. The biaxial dual-strong axis and column minor axis configurations of the moment connection shall be considered as an alternative system. 3. For SMF and IMF systems, on the sideplate standard or configuration A the U-shaped cover plates shall be used with the k dimension extension. The k dimension extension length is defined as beam depth d b /6, rounded to the nearest [1] / 2 inch (12.7 mm).

  4. The hinge-to-hinge span to beam depth, L h /d, shall be greater than or equal to 4.5. 5. The width-to-thickness ratios for beam flanges shall not be less than 3.5. Exception: For width-to-thickness ratios less than 3.5 the C pr shall be calculated in accordance with that for welded side- plate connections but in no case shall the width-to-thickness ratio be less than 3.0. 6. The minimum bolt-to-bolt spacing shall not be less than 3 bolt diameters. 7. The extension of the side plates beyond the face of the column shall be within the range of 0.65d to 1.5d. 8. The gap-to-side plate thickness ratio shall range from 2.1 to 2.3.

  Exception: The gap-to-side plate thickness ratio shall be permitted to be modified for moment connections with unequal beam sizes on opposite sides of the column or when orthogonal beams acting as drag connections frame into the side plate. 9. Demand Critical fillet welds {2}, {5}, {5a} and {8} shall have Magnetic Particle Testing (MT) in accordance with AWS D1.1 for procedure, technique and acceptance. Inspect the beginning and end of these welds for a 6-inch (152 mm) length, plus any location along the length of the weld where a start and restart is visually noted for a distance of 6 inches (152 mm) on either side of the start/stop location. 10. The connection specific factor to account for peak connection strength, C pr _, shall be between 1.15 and 1.35.

• CMC § 415.11.1 Medium relevance — show source text

  Storage or use.
  e. In open use or dispensing.
  f. Rooms containing dispensing and use of hazardous materials where an explosive environment can occur because of the characteristics or nature of the hazardous materials
  or as a result of the dispensing or use process.
  g. A method of explosion control shall be provided where Class 2 water-reactive materials can form potentially explosive mixtures.
  h. Explosion venting is not required for Group H-5 fabrication areas complying with Section 415.11.1 and the_California Fire Code_.
  i. Where explosion control is required in Section 1207 of the_California Fire Code_.
  j. Does not apply to consumer fireworks, Division 1.4G.
  k. Not required for Category 1B Flammable Gases having a burning velocity not exceeding 3.9 inches per second (10 cm/s).|a. See Section 414.1.3.
  b. See the_California Fire Code_.
  c. Combustible dusts where manufactured, generated or used in such a manner that the concentration and conditions create a fire or explosion hazard based on information
  prepared in accordance with Section 104.2.2 of the_California Fire Code_. See definition of "Combustible dust" in Chapter 2.
  d. Storage or use.
  e. In open use or dispensing.
  f. Rooms containing dispensing and use of hazardous materials where an explosive environment can occur because of the characteristics or nature of the hazardous materials
  or as a result of the dispensing or use process.
  g. A method of explosion control shall be provided where Class 2 water-reactive materials can form potentially explosive mixtures.
  h. Explosion venting is not required for Group H-5 fabrication areas complying with Section 415.11.1 and the_California Fire Code_.
  i. Where explosion control is required in Section 1207 of the_California Fire Code_.
  j. Does not apply to consumer fireworks, Division 1.4G.
  k. Not required for Category 1B Flammable Gases having a burning velocity not exceeding 3.9 inches per second (10 cm/s).|a. See Section 414.1.3.
  b. See the_California Fire Code_.
  c. Combustible dusts where manufactured, generated or used in such a manner that the concentration and conditions create a fire or explosion hazard based on information
  prepared in accordance with Section 104.2.2 of the_California Fire Code_. See definition of "Combustible dust" in Chapter 2.
  d. Storage or use.
  e. In open use or dispensing.
  f. Rooms containing dispensing and use of hazardous materials where an explosive environment can occur because of the characteristics or nature of the hazardous materials
  or as a result of the dispensing or use process.
  g. A method of explosion control shall be provided where Class 2 water-reactive materials can form potentially explosive mixtures.
  h. Explosion venting is not required for Group H-5 fabrication areas complying with Section 415.11.1 and the_California Fire Code_.
  i. Where explosion control is required in Section 1207 of the_California Fire Code_.
  j. Does not apply to consumer fireworks, Division 1.4G.
  k. Not required for Category 1B Flammable Gases having a burning velocity not exceeding 3.9 inches per second (10 cm/s).|

• CMC § 0.46 Medium relevance — show source text

  26|NR| |Curtain Wall/ Storefront7 -
  Minimum VT, Common-Use
  Area|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46|0.46| |NAFS 2017 Performance Class
  AW5 - Maximum U-Factor|0.38|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.40|0.38| |NAFS 2017 Performance Class
  AW5 - Maximum RSHGC|NR|0.24|NR|0.24|NR|0.24|0.24|0.24|0.24|0.24|0.24|0.24|0.24|0.24|0.24|NR| |NAFS 2017 Performance Class
  AW5 - Minimum VT, Common-
  Use Areas|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37|0.37| |All Other Fenestration -
  Maximum U-Factor|0.28|0.30|0.28|0.28|0.28|0.34|0.34|0.30|0.30|0.30|0.28|0.30|0.28|0.28|0.28|0.28| |All Other Fenestration -
  Maximum RSHGC|NR|0.23|NR|0.23|NR|0.23|0.23|0.23|0.23|0.23|0.23|0.23|0.23|0.23|0.23|NR| |Maximum Window to Floor
  Ratio|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%|20%| |Maximum Window to Wall
  Ratio|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%|40%| |Maximum Skylight Roof Ratio|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%|5%| |1. Install the specified_R_-value with an airspace present between the roofing and the roof deck. Such as standard installation of concrete or clay tile.
  2._ R_-values shown for below roof deck insulation are for wood-frame construction with insulation installed between the framing members. Alternatives including insulation
  above rafters or above roof deck shall comply with the performance standards.
  3. Assembly_U_-factors for exterior framed walls can be met with cavity insulation alone or with continuous insulation alone, or with both cavity and continuous insulation that
  results in an assembly_U_-factor equal to or less than the_U_-factor shown.

• CMC § 1010.0 Medium relevance — show source text

  1010.0 Clearance for Access.

  1010.1 General. Where boilers are installed or replaced, clearance shall be provided to allow access for inspection, maintenance, and repair. Passageways around all sides of boilers shall have an unobstructed width of not less than 18 inches (457 mm). Clearance for repair and cleaning shall be permitted to be provided through a door or access panel into another area, provided the opening is of sufficient size.

  Exception: Subject to the approval of the Authority Having Jurisdiction, boilers shall be permitted to be installed with a side clearance of less than 18 inches (457 mm), provided that the lesser clearance does not inhibit inspection, maintenance, or repair.

  1010.2 Power Boilers. Power boilers having a steam-generating capacity in excess of 5000 pounds per hour (lb/h) (0.6299 kg/s) or having a heating surface in excess of 1000 square feet (92.9 m [2] ) or input in excess of 5 000 000 Btu/h (1464 kW) shall have a clearance of not less than 7 feet (2134 mm) from the top of the boiler to the ceiling.

  1010.3 Steam-Heating Boilers, Hot Water Boilers, and Power Boilers. Steam-heating boilers and hot-water-heating boilers that exceed one of the following limits:

  (1) 5 000 000 Btu/h input (1464 kW)

  (2) 5000 pounds steam per hour (0.6299 kg/s) capacity

  (3) 1000 square foot (92.9 m [2] ) heating surface

  Power boilers that do not exceed one of the following limits:

  (1) 5 000 000 Btu/h input (1464 kW)

  (2) 5000 pounds steam per hour (0.6299 kg/s) capacity (3) 1000 square foot (92.9 m [2] ) heating surface

  Boilers with manholes on top of the boiler, except those described in Section 1010.2 and Section 1010.4, shall have a clearance of not less than 3 feet (914 mm) from the top of the boiler to the ceiling. 1010.4 Package Boilers, Steam-Heating Boilers, and Hot-Water-Heating Boilers. Package boilers, steam-heating boilers, and hot-water-heating boilers with no manhole on top of the shell and not exceeding one of the above limits shall have a clearance of not less than 2 feet (610 mm) from the ceiling.

  1011.0 Boilers, Stokers, and Steam Generators.

  1011.1 General. The design, installation, and operation of single burner boilers, multiple burner boilers, stokers, and atmospheric fluidized-bed boilers with not less than a fuel input rating of 12.5 E+06 Btu/h (3.663 MW) to pulverized fuel systems, fired or unfired steam generators used to recover heat from combustion turbines and to other combustion turbine exhaust systems shall be in accordance with NFPA 85. That portion of the oil-burning system supplied on boilers and covered within the scope of NFPA 85 shall be installed in accordance with NFPA 85.

• CMC § 716.1.2.3. Medium relevance — show source text

  5|1/3|OH-20 or W-30| |Party wall|All|NP|Not Applicable| |NP = Not Permitted.
  a. Not permitted except fire-resistance-rated glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3.
  b. XXX = The fire rating duration period in minutes, which shall be equal to the fire-resistance rating required for the wall assembly.
  c. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated
  glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.|NP = Not Permitted.
  a. Not permitted except fire-resistance-rated glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3.
  b. XXX = The fire rating duration period in minutes, which shall be equal to the fire-resistance rating required for the wall assembly.
  c. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated
  glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.|NP = Not Permitted.
  a. Not permitted except fire-resistance-rated glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3.
  b. XXX = The fire rating duration period in minutes, which shall be equal to the fire-resistance rating required for the wall assembly.
  c. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated
  glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.|NP = Not Permitted.
  a. Not permitted except fire-resistance-rated glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3.
  b. XXX = The fire rating duration period in minutes, which shall be equal to the fire-resistance rating required for the wall assembly.
  c. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated
  glazing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.|

  2025 CALIFORNIA BUILDING CODE 7-29

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  �

  FIRE AND SMOKE PROTECTION FEATURES

• California Mechanical Code Medium relevance — show source text

  during occupied condition**|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition|No-load during occupied condition
  Heating load during occupied condition| |Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition|Heating load during occupied condition| |Step 1: Che|Step 1: Che|ck and ve|r|i|f|y||the fo|ll|o|wi|n|g|for|** e**|ac|h|si|mu|lat|ion|** m**|od|e|r|equ|ire|d.||||||A||B|C|D|E|F|G| |a.|Supply|fan opera|te|s||c|o|ntinua|ll|y.

• CMC § 170.2 Medium relevance — show source text

  The rated energy capacity shall be not less than the Minimum Rated Useable Energy Capacity determined by Equation 170.2-E, or by Equation 170.2-F if SARA was used to determine the PV capacity in Section 170.2-D, and the rated power capacity shall be not less than the Minimum Power Capacity determined by Equation 170.2-G. In mixed occupancy buildings, the total battery system capacity for the building shall be determined by applying the Minimum Rated Usable Energy Capacity to each of the listed building types and summing the capacities determined for each.

  EQUATION 170.2-E—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY kWh batt = k((CFA × B)/(1000 × C [0.5] ))

  — EQUATION 170.2-F BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED USABLE ENERGY CAPACITY, SARA-ADJUSTED kWh batt = k((CFA × B)/(1000 × C [0.5] )) × (kWP Vdc,SARA /kWP Vdc )

  268 2025 CALIFORNIA ENERGY CODE

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  MULTIFAMILY BUILDINGS—PERFORMANCE AND PRESCRIPTIVE COMPLIANCE APPROACHES

  where:

  kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.

  kW PVdc = Minimum Rated PV System Capacity in kW from Equation 170.2D. kW PVdc, SARA = Minimum Rated PV System Capacity in kW from the SARA calculation. CFA = Conditioned floor area that is subject to the PV system requirements of Section 170.2(g) in square feet.

  B = BESS Capacity Factor in Wh/square foot as specified in Table 170.2-V for the building type.

  C = Rated single charge-discharge cycle AC to AC (round-trip) efficiency of the BESS.

  EQUATION 170.2-G—BATTERY ENERGY STORAGE SYSTEM MINIMUM RATED POWER CAPACITY

  kW batt = kW batt /4

  where:

  kW batt = Minimum Rated Power Capacity of the BESS in kW dc .

  kWh batt = Minimum Rated Usable Energy Capacity of the BESS in kWh.

  Exception 1 to Section 170.2(h): No BESS is required if the installed PV system capacity is less than 15 percent of the capacity determined by Equation 170.2-D.

  Exception 2 to Section 170.2(h): No BESS is required in buildings with BESS requirements with less than 10 kWh minimum rated usable energy capacity.

  |TABLE 170.

• CMC § 90.1 High relevance — show source text

  (3) Variable flow is not required for primary pumps in a primary/secondary system.

  (4) Variable flow is not required for a coil pump provided for freeze protection.

  (5) Variable flow is not required for heat recovery coil runaround loops. [ASHRAE 90.1:6.5.4.2]

  CHILLED WATER PUMPS IN THESE CLIMATE ZONES	HEATING WATER PUMPS IN THESE CLIMATE ZONES	MOTOR NAMEPLATE HORSEPOWER
  0A, 0B, 1A, 1B, 2B	NR	≥2 hp
  2A, 3B	NR	≥3 hp
  3A, 3C, 4A, 4B	7, 8	≥5 hp
  4C, 5A, 5B, 5C, 6A, 6B	3C, 5A, 5C, 6A, 6B	≥7.5 hp
  ─	4A, 4C, 5B	≥10 hp
  7, 8	4B	≥15 hp
  ─	2A, 2B, 3A, 3B	≥25 hp
  ─	1B	≥100 hp
  ─	0A, 0B, 1A	≥200 hp

  For SI units: 1 horsepower = 0.746 kW

  E 503.5.7.3 Chiller and Boiler Isolation. Where a chilled-water plant includes more than one chiller, provisions shall be made so that the fluid flow through the chiller is automatically shut off where the chiller is shut down. Chillers piped in series for the purpose of increased temperature differential, shall be considered as one chiller. Where constant-speed chilled-water or condenser water pumps are used to serve multiple chillers, the number of pumps shall be not less than the number of chillers and staged on and off with the chillers. [ASHRAE 90.1:6.5.4.3.1]

  E 503.5.7.3.1 Boiler Isolation. Where a boiler plant includes more than one boiler, provisions shall be made so that the flow through the boiler is automatically shut off where the boiler is shut down. Where constant-speed hot-water pumps are used to serve multiple boilers, the number of pumps shall be not less than the number of boilers and staged on and off with the boilers.

  [ASHRAE 90.1:6.5.4.3.2]

  E 503.5.7.4 Chilled- and Hot-Water Tempera- ture Reset Controls. Chilled- and hot-water systems with a design capacity exceeding 300 000 Btu/h (88 kW) supplying chilled or heated water to comfort conditioning systems shall include controls that automatically reset supply water temperatures by representative building loads (including return water temperature) or by outdoor air temperature. Where DDC is used to control valves, the set point shall be reset based on valve positions until one valve is nearly wide open or setpoint limits of the system equipment or application have been reached.

  Exceptions:

• CMC § 1106.2.6. Medium relevance — show source text

  (1) The space(s) containing the machinery is (are) separated from other occupancies by tight construction with tightfitting doors.

  (2) Access is restricted to authorized personnel.

  (3) Refrigerant detectors are installed with the sensing location and alarm level as required in refrigeration machinery rooms in accordance with Section 1106.2.6.

  (4) Open flames and surfaces exceeding 800°F (427°C) shall not be permitted where a Group A2, B2, A3, or B3 refrigerant, is used.

  (5) Electrical equipment that is in accordance with Class 1, Division 2, of NFPA 70 where the quantity of a Group A2, B2, A3, or B3 refrigerant in an independent circuit is capable of exceeding 25 percent of the lower flammability limit (LFL) upon release to the space based on the volume determined in accordance with Section 1104.2.1 through Section 1104.2.3.

  (6) Refrigerant containing parts in systems exceeding 100 horsepower (74.6 kW) compressor drive power, except evaporators used for refrigeration or dehumidification, condensers used for heating, control and pressure-relief valves for either, low-probability pumps, and connecting piping, are located in a machinery room or outdoors.

  [ASHRAE 15:7.2.2]

  1104.5 Flammable Refrigerants. The total of Group A2, B2, A3, and B3 refrigerants, other than Group A2L and B2L refrigerants shall not exceed 1100 pounds (498.9 kg) without approval by the Authority Having Jurisdiction. Institutional Occupancies shall comply with Section 1104.3. Machinery rooms required in accordance with Section 1106.0 based on flammability shall be constructed and maintained in accordance with Section 1106.2.1 through Section 1106.2.6 and Section 1106.11 for Group A2L and B2L refrigerants. 1104.6 Group A2L Refrigerants for Human Comfort. High-probability systems using Group A2L refrigerants for human comfort applications shall comply with this section.

  [ASHRAE 15:7.6]

  1104.6.1 Refrigerant Concentration Limits. Occupied spaces shall comply with the releasable charge limitations of the equipment listing and ASHRAE 15. Unoccupied spaces with refrigerant containing equipment, not including continuous piping or tubing, shall comply with the releasable charge limitations of the equipment listing or Section 1104.6.4. {ASHRAE 15:7.6.1-7.6.1.2}

  1104.6.2 Listing and Installation Requirements. Refrigeration systems shall be listed and shall be installed in accordance with listing, the manufacturer’s instructions, and any markings on the equipment restricting the installation. [ASHRAE 15:7.6.2]

  1104.6.2.1 Nameplate. The nameplate required by Section 1115.5 shall include a symbol indicating that a flammable refrigerant is used, as specified by the product listing. [ASHRAE 15:7.6.2.1]

  1104.6.2.2 Labeling. A label indicating a flammable refrigerant is used shall be placed adjacent to service ports and other locations where service involving components containing refrigerant is performed, as specified by the product listing.

• CMC § 6.1507 Medium relevance — show source text

  LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|1. LIFT = Entering Condenser Water Temperature (°F) – Leaving Chilled Water Temperature (°F)
  2. Condenser DT = Leaving Condenser Water Temperature (°F) – Entering Condenser Water Temperature (°F)
  Kadj = 6.1507 – 0.30244(×) + 0.0062692(×)2 – 0.000045595(×)3
  where× = Condenser DT + LIFT
  COPadj = Kadj * COPstd|

  A6.207.1.2 Controls for heat pumps with supplementary electric resistance heaters. Heat pumps with supplementary electric resistance heaters shall have controls:

  A6.207.1.2.1 That prevent supplementary heater operation when the heating load can be met by the heat pump alone; and

• CMC § 503.5.6.5 Medium relevance — show source text

  covered by Section E 503.5.6.5 and having a fan nameplate electrical input power of less than 180 W or having a motor nameplate horsepower less than

  1 / 12 hp (62.1 W) shall meet the fan efficacy requirements specified in ASHRAE 90.1. [ASHRAE 90.1:6.5.3.7]

  E 503.5.6.7 Ventilation Design. The required minimum outdoor air rate is the larger of the minimum outdoor air rate or the minimum exhaust air rate

  required by Chapter 4, ASHRAE 62.1, ASHRAE 62.2, ASHRAE/ASHE 170, or applicable codes or accreditation standards. Outdoor air ventilation systems shall comply with one of the following:

  (1) Design minimum system outdoor air provided shall not exceed 135 percent of the required minimum outdoor air rate.

  (2) Dampers, ductwork, and controls shall be provided that allow the system to supply no more than the required minimum outdoor air rate with a single setpoint adjustment.

  (3) The system includes exhaust air energy recovery complying with Section E 503.5.10.1.

  [ASHRAE 90.1:6.5.3.8]

  E 503.5.6.8 Occupied-Standby Controls. Zones serving only rooms that are required to have automatic partial OFF or automatic full OFF lighting controls in accordance with ASHRAE 90.1, where the Chapter 4 or ASHRAE 62.1 occupancy category permits ventilation air to be reduced to zero when

  «

  438 2025 CALIFORNIA MECHANICAL CODE

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  APPENDIX E

  TABLE E 503.5.6.5(1) MINIMUM AVERAGE FULL-LOAD EFFICIENCY FOR POLYPHASE SMALL ELECTRIC MOTORS* [ASHRAE 90.1: TABLE 10.8-3]	Col2	Col3	Col4
  FULL-LOAD EFFICIENCY, %	FULL-LOAD EFFICIENCY, %	FULL-LOAD EFFICIENCY, %	FULL-LOAD EFFICIENCY, %
  NUMBER OF POLES	OPEN MOTORS	OPEN MOTORS	OPEN MOTORS
  NUMBER OF POLES	2	4	6
  SYNCHRONOUS SPEED (rpm)	3600	1800	1200
  MOTOR SIZE (hp)	EFFICIENCY, %	EFFICIENCY, %	EFFICIENCY, %
  0.25	65.6	69.5	67.5
  0.33	69.5	73.4	71.4
  0.50	73.4	78.2	75.3
  0.75	76.8	81.1	81.7
  1	77.0	83.5	82.5
  1.5	84.0	86.5	83.8
  2	85.5	86.5	N/A
  3	85.5	86.9	N/A

  For SI units: 1 horsepower = 0.746 kW

• CMC § 907.2.3 Medium relevance — show source text

  Early Suppression Fast-Response Sprinkler (ESFR) (see Automatic Sprinklers) Education Occupancy (Group E) 203 Alarms and detection 907.2.3 Means of egress Aisles 1018.2, 1018.5 Corridors 1020.3, 1020.2 Locking 1010.2.12, 1010.2.7 Panic hardware 1010.2.8

  Stairways, exit access 1019 Travel distance 1017.2, 1006.3.3,

  1006.2.1

  Sprinklers 903.2.3 Egress (see Means of Egress) Electrical Equipment 603 Aviation facilities 2006.14 Dust-producing machines 5906.5.5 Signs 603.4.1, 1207.4.8 Work space and clearance 603.4 Workstations in HPM facilities

  2703.7.2

  2025 CALIFORNIA FIRE CODE INDEX-5

  on Jul 18, 2025 11:14 AM (CDT) THEREUNDER.

  INDEX

  Energy Storage System (ESS) 202, 1207 Cabinets 1207.4.10, 1207.4.8, 1207.6.3 Commissioning, decommissioning, operation and maintenance 202, 1207.2

  Fire remediation 1207.1.8 Hazard mitigation analysis 1207.1.6 Large-scale fire test 1207.1.7 Mobile ESS 202, 1207.1, 1207.1.2,

  1207.10 Residential (R-3 and R-4) 1207.11 Stationary ESS 202, 1207 Walk-in units 202, 1207.1.7, 1207.4.12, 1207.4.6, 1207.4.8, 1207.4.9, 1207.5.2, 1207.5.2.1, 1207.5.4, 1207.5.5, 1207.5.6, 1207.6.1, 1207.6.3, 1207.9.4 Energy Systems Chapter 12, 1201.1, 1201.2 Electrical energy storage systems 1201.3, 1207 Emergency and standby power systems 1203

  Permits 105.5.14, 105.6.10, 105.6.21,

  105.6.6 Portable generators 1204, 3309 Solar and photovoltaic systems 1205 Stationary fuel cell power systems 1206 Entry, Right of 104.4 Equipment, Fueled 313 Equipment Platform Defined 202

  Guards required 1015.2 Escalator Openings (see Floor Openings and Shafts) Escape Openings 1031 ESFR Sprinklers (see Automatic Sprinklers) Ethylene Gas 2503

  Generators 2506

• CMC § 10.3 Medium relevance — show source text

  4. Mixing of continuous sheathing methods CS-WSP, CS-G and CS-PF along a braced wall line shall be permitted. Intermittent methods ABW, PFH and PFG shall be permitted to be used along a braced wall line with continuous sheathed methods, provided that the length of required bracing for that braced wall line is determined in accordance with Table R602.10.3(1) or R602.10.3(3) using the highest value of the bracing methods used.

  5. In Seismic Design Categories A and B, and for detached one- and two-family dwellings in Seismic Design Category C, mixing of intermittent bracing methods along the interior portion of a braced wall line with continuous sheathing methods CS-WSP, CS-G and CS-PF along the exterior portion of the same braced wall line shall be permitted. The length of required bracing shall be the highest value of all intermittent bracing methods used in accordance with Table R602.10.3(1) or R602.10.3(3) as adjusted by Tables R602.10.3(2) and R602.10.3(4), respectively. The requirements of Section R602.10.7 shall apply to each end of the continuously sheathed portion of the braced wall line. R602.10.4.2 Continuous sheathing methods. Continuous sheathing methods require structural panel sheathing to be used on all sheathable surfaces on one side of a braced wall line including areas above and below openings and gable end walls and shall meet the requirements of Section R602.10.7. R602.10.4.3 Braced wall panel interior finish material. Braced wall panels shall have gypsum wall board installed on the side of the wall opposite the bracing material. Gypsum wall board shall be not less than [1] / 2 inch (12.7 mm) in thickness and be fastened with nails or screws in accordance with Table R602.3(1) for exterior sheathing or Table R702.3.5 for interior gypsum wall board. Spacing of fasteners at panel edges for gypsum wall board opposite Method LIB bracing shall not exceed 8 inches (203 mm). Interior finish material shall not be glued in Seismic Design Categories D 0, D 1 and D 2 . Exceptions:

  6. Interior finish material is not required opposite wall panels that are braced in accordance with Methods GB, BVWSP, ABW, PFH, PFG and CS-PF, unless otherwise required by Section R302.6.

  7. An approved interior finish material with an in-plane shear resistance equivalent to gypsum board shall be permitted to be substituted, unless otherwise required by Section R302.6.

  8. Except for Method LIB, gypsum wall board is permitted to be omitted provided that the required length of bracing in Tables R602.10.3(1) and R602.10.3(3) is multiplied by the appropriate adjustment factor in Tables R602.10.3(2) and R602.10.3(4), respectively, unless otherwise required by Section R302.6. R602.10.4.4 Panel joints. Vertical joints of panel sheathing shall occur over and be fastened to common studs. Horizontal joints of panel sheathing in braced wall panels shall occur over and be fastened to common blocking of a thickness of 1 [1] / 2 inches (38 mm) or greater.

• CMC § 2.78 Medium relevance — show source text

  56|2.78|3.27|3.79|4.35|4.95|3.78| |30|60|7:12|7.54|8.21|9.64|11.17|12.83|14.60|4.52| |30|60|12:12|15.54|16.92|19.86|23.03|26.44|30.08|6.57| |60|15|< 1:12|3.42|3.72|4.36|5.06|5.81|6.61|3.63| |60|15|5:12|4.75|5.17|6.06|7.03|8.07|9.19|4.40| |60|15|7:12|6.76|7.36|8.64|10.02|11.51|13.09|4.75| |60|15|12:12|10.35|11.27|13.23|15.34|17.61|20.04|5.71| |60|30|< 1:12|3.42|3.72|4.36|5.06|5.81|6.61|3.83| |60|30|5:12|4.75|5.17|6.06|7.03|8.07|9.19|5.37| |60|30|7:12|9.12|9.93|11.66|13.52|15.52|17.66|6.07| |60|30|12:12|16.30|17.75|20.83|24.16|27.73|31.55|8.00| |60|45|< 1:12|3.55|3.87|4.54|5.27|6.05|6.88|4.03| |60|45|5:12|4.94|5.37|6.31|7.31|8.40|9.55|6.34| |60|45|7:12|11.71|12.75|14.97|17.36|19.93|22.67|7.39| |60|45|12:12|22.70|24.71|29.00|33.64|38.62|43.94|10.29| |60|60|< 1:12|3.68|4.01|4.71|5.46|6.27|7.13|4.23| |60|60|5:12|5.11|5.57|6.54|7.58|8.70|9.90|7.31| |60|60|7:12|14.38|15.66|18.37|21.31|24.46|27.83|8.71| |60|60|12:12|29.30|31.90|37.44|43.42|49.85|56.72|12.57| |For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 mile per hour = 0.447 m/s, 1 pound-force per linear foot = 0.146 kN/m, 1 pound per square foot = 47.88 Pa.
  a.

• CMC § 12-6 Medium relevance — show source text

  1203 Temperature Control . . . . . . . . . . . . . . . . . . . . . . . . . . 12-6

  1204 Lighting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-7

  1205 Yards or Courts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-7

  1206 Sound Transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . 12-8

  1207 Enhanced Classroom Acoustics . . . . . . . . . . . . . . . . . 12-8

  1208 Interior Space Dimensions . . . . . . . . . . . . . . . . . . . . . 12-8

  1209 Access to Unoccupied Spaces. . . . . . . . . . . . . . . . . . . 12-9

  1210 Toilet and Bathroom Requirements . . . . . . . . . . . . . 12-9

  1211 UV Germicidal Irradiation Systems . . . . . . . . . . . . . 12-10

  1212 [HCD 1 & HCD 2] Garage Door Springs . . . . . . . . . . . .12-10

  1213 [HCD 1] Pollutant Control . . . . . . . . . . . . . . . . . . . . . . .12-11

  1214 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1215 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1216 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1217 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1218 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1219 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1220 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

  1221 Reserved . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12-11

• CMC § 706.4. Medium relevance — show source text

  As required in Section 706.4.
  f. As allowed in Section 4.6 of NFPA 221.
  g. See Section 716.2.5.1.2.
  h. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated glaz-
  ing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.
  i. Two doors, each with a fire rating of 20 minutes, installed on opposite sides of the same opening in a fire partition, shall be deemed equivalent in fire protection rating to one
  45-minute fire door.|For SI: 1 square inch = 645.2 mm.
  a. Fire-resistance-rated glazing tested to ASTM E119 in accordance with Section 716.1.2.3 shall be permitted, in the maximum size tested.
  b. Under the column heading “Fire-rated glazing marking door vision panel,” W refers to the fire-resistance rating of the glazing, not the frame.
  c. See Section 716.1.2.2.1 and Table 716.1(1) for additional permitted markings.
  d. Two doors, each with a fire protection rating of 11/2 hours, installed on opposite sides of the same opening in a fire wall, shall be deemed equivalent in fire protection rating to
  one 3-hour fire door.
  e. As required in Section 706.4.
  f. As allowed in Section 4.6 of NFPA 221.
  g. See Section 716.2.5.1.2.
  h. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated glaz-
  ing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.
  i. Two doors, each with a fire rating of 20 minutes, installed on opposite sides of the same opening in a fire partition, shall be deemed equivalent in fire protection rating to one
  45-minute fire door.|For SI: 1 square inch = 645.2 mm.
  a. Fire-resistance-rated glazing tested to ASTM E119 in accordance with Section 716.1.2.3 shall be permitted, in the maximum size tested.
  b. Under the column heading “Fire-rated glazing marking door vision panel,” W refers to the fire-resistance rating of the glazing, not the frame.
  c. See Section 716.1.2.2.1 and Table 716.1(1) for additional permitted markings.
  d. Two doors, each with a fire protection rating of 11/2 hours, installed on opposite sides of the same opening in a fire wall, shall be deemed equivalent in fire protection rating to
  one 3-hour fire door.
  e. As required in Section 706.4.
  f. As allowed in Section 4.6 of NFPA 221.
  g. See Section 716.2.5.1.2.
  h. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems.

• CMC § 1207.1.8 Medium relevance — show source text

  Fire remediation 1207.1.8 Hazard mitigation analysis 1207.1.6 Large-scale fire test 1207.1.7 Mobile ESS 202, 1207.1, 1207.1.2,

  1207.10 Residential (R-3 and R-4) 1207.11 Stationary ESS 202, 1207 Walk-in units 202, 1207.1.7, 1207.4.12, 1207.4.6, 1207.4.8, 1207.4.9, 1207.5.2, 1207.5.2.1, 1207.5.4, 1207.5.5, 1207.5.6, 1207.6.1, 1207.6.3, 1207.9.4 Energy Systems Chapter 12, 1201.1, 1201.2 Electrical energy storage systems 1201.3, 1207 Emergency and standby power systems 1203

  Permits 105.5.14, 105.6.10, 105.6.21,

  105.6.6 Portable generators 1204, 3309 Solar and photovoltaic systems 1205 Stationary fuel cell power systems 1206 Entry, Right of 104.4 Equipment, Fueled 313 Equipment Platform Defined 202

  Guards required 1015.2 Escalator Openings (see Floor Openings and Shafts) Escape Openings 1031 ESFR Sprinklers (see Automatic Sprinklers) Ethylene Gas 2503

  Generators 2506

  Evacuation 115.2, 405, 2603.3.4, 2603.3.5 Evacuation Diagrams 403.9.1.1, 403.9.2.3 Evacuation Drills 405 Frequency 405.3, Table 405.3 Notification 405.7 Recall and reentry 405.10 Evacuation Plans 404

  Excess Flow Control

  Defined 202

  Excess Flow Valve

  Defined 202

  Exhausted Enclosure 202, 5003.8.5 Exhibit Gallery Occupancy load Table 1004.5 Exhibition Halls (Occupancy Group A-3)

  202

  Exhibits and Trade Shows 105.5.15 Existing Defined 202 Existing Buildings Chapter 11 Group I-2 1105 Outdoor occupancies 1106 Exit 1022 Configuration 1007 Defined 202

  Enclosure 1023

  Horizontal 1026 Number required 1006 Passageways 1024

  Ramps, interior and exterior 1023, 1027 Stairways, interior or exterior 1023, 1027 Stories 1004.2.3, 1006.3, 1017.3.1 Exit Access 101, 1016, 1017, 1018, 1019 Aisles 1018

  Atriums 1006.3.2, 1017.3.2, 1019.3 Balconies 1017.2.1, 1021 Common path 1006.2.1 Corridor 1020

• CMC § 716.2.5.1.2. Medium relevance — show source text

  See Section 716.2.5.1.2.
  h. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated glaz-
  ing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.
  i. Two doors, each with a fire rating of 20 minutes, installed on opposite sides of the same opening in a fire partition, shall be deemed equivalent in fire protection rating to one
  45-minute fire door.|For SI: 1 square inch = 645.2 mm.
  a. Fire-resistance-rated glazing tested to ASTM E119 in accordance with Section 716.1.2.3 shall be permitted, in the maximum size tested.
  b. Under the column heading “Fire-rated glazing marking door vision panel,” W refers to the fire-resistance rating of the glazing, not the frame.
  c. See Section 716.1.2.2.1 and Table 716.1(1) for additional permitted markings.
  d. Two doors, each with a fire protection rating of 11/2 hours, installed on opposite sides of the same opening in a fire wall, shall be deemed equivalent in fire protection rating to
  one 3-hour fire door.
  e. As required in Section 706.4.
  f. As allowed in Section 4.6 of NFPA 221.
  g. See Section 716.2.5.1.2.
  h. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated glaz-
  ing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.
  i. Two doors, each with a fire rating of 20 minutes, installed on opposite sides of the same opening in a fire partition, shall be deemed equivalent in fire protection rating to one
  45-minute fire door.|For SI: 1 square inch = 645.2 mm.
  a. Fire-resistance-rated glazing tested to ASTM E119 in accordance with Section 716.1.2.3 shall be permitted, in the maximum size tested.
  b. Under the column heading “Fire-rated glazing marking door vision panel,” W refers to the fire-resistance rating of the glazing, not the frame.
  c. See Section 716.1.2.2.1 and Table 716.1(1) for additional permitted markings.
  d. Two doors, each with a fire protection rating of 11/2 hours, installed on opposite sides of the same opening in a fire wall, shall be deemed equivalent in fire protection rating to
  one 3-hour fire door.
  e. As required in Section 706.4.
  f. As allowed in Section 4.6 of NFPA 221.
  g. See Section 716.2.5.1.2.
  h. Fire-protection-rated glazing is not permitted for fire barriers required by Section 1207 of the_California Fire Code_ to enclose energy storage systems. Fire-resistance-rated glaz-
  ing assemblies tested to ASTM E119 or UL 263, as specified in Section 716.1.2.3, shall be permitted.
  i.