Area, height and occupancy separation limits

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

• CHBC § 8-3 High relevance — show source text

  TREATMENT. An act of work to carry out preservation, restoration, stabilization, rehabilitation or reconstruction.

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  8-3 USE AND OCCUPANCY

  SECTION 8-301 — PURPOSE AND SCOPE

  8-301.1 Purpose. The purpose of the CHBC is to provide regulations for the determination of occupancy classifications and conditions of use for qualified historical buildings or properties.

  8-301.2 Scope. Every qualified historical building or property for which a permit or approval has been requested shall be classified prior to permit issuance according to its use or the character of its occupancy in accordance with the regular code and applicable provisions of this chapter.

  SECTION 8-302 — GENERAL

  8-302.1 Existing use. The use or character of occupancy of a qualified historical building or property, or portion thereof, shall be permitted to continue in use regardless of any period of time in which it may have remained unoccupied or in other uses, provided such building or property otherwise conforms to all applicable requirements of the CHBC.

  8-302.2 Change in occupancy. The use or character of the occupancy of a qualified historical building or property may be changed from or returned to its historical use or character, provided the qualified historical building or property conforms to the requirements applicable to the new use or character of occupancy as set forth in the CHBC. Such change in occupancy shall not mandate conformance with new construction requirements as set forth in regular code.

  8-302.3 Occupancy separations. Required occupancy separations of more than one hour may be reduced to one-hour fire-resistive construction with all openings protected by not less than three-fourths-hour fire-resistive assemblies of the self-closing or automatic-closing type when the building is provided with an automatic sprinkler system throughout the entire building in accordance with Section 8-410.2. Doors equipped with automatic-closing devices shall be of a type which will function upon activation of a device which responds to products of combustion other than heat.

  Required occupancy separations of one hour may be omitted when the building is provided with an automatic sprinkler system throughout.

  8-302.4 Maximum floor area. Regardless of the use or character of occupancy, the area of a one-story qualified historical building or property may have, but shall not exceed, a floor area of 15,000 square feet (1393.5 m [2] ) unless such an increase is otherwise permitted in regular code. Multistory qualified historical buildings (including basements and cellars) shall be in accordance with regular code requirements.

  Exception: Historical buildings may be unlimited in floor area without fire-resistive area separation walls:

  1. When provided with an automatic sprinkler, or
  2. Residential occupancies of two stories or less when provided with a complete fire alarm and annunciation system and where the exiting system conforms to regular code.

  8-302.5 Maximum height. The maximum height and number of stories of a qualified historical building or property shall not be limited because of construction type, provided such height or number of stories does not exceed that of its historical design.

• CHBC § 406.3.2 High relevance — show source text

  See Section 420.
  b. The required separation from areas used only for private or pleasure vehicles shall be reduced by 1 hour but not to less than 1 hour.
  c. See Sections 406.3.2 and 406.6.4.
  d. Separation is not required between occupancies of the same classification.
  e. See Section 422.2 for ambulatory care facilities.
  f. Occupancy separations that serve to define fire area limits established in Chapter 9 for requiring fire protection systems shall also comply with Section 707.3.10 and Table
  707.3.10 in accordance with Section 901.7.
  g._ [SFM]_Group I and F1 occupancies and Group R-2.1 and F-1 occupancies shall have a 3 hour separation.
  h._ [SFM]_Commercial kitchens not associated with cafeterias and similar dining facilities in Group I-2 and Group R-2.1 shall have a 2-hour separation and shall be protected by an
  automatic sprinkler system.
  i._ [SFM]__ Group E child-care separation with I-4 child care can be reduced to 1 hour with the installation of automatic fire sprinklers in accordance with Section 903.3.1.1.
  j. When not considered an accessory use in accordance with Section 508.2.4, the required separation between Group I-2 and required covers for accessible entrances and emergency_
  vehicle entrances, when in accordance with Section 406.5.2 and protected by an automatic sprinkler system, shall be reduced by 1 hour but not to less than 1 hour. See Section
  903.2.21.|

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  GENERAL BUILDING HEIGHTS AND AREAS

  508.4.1 Occupancy classification. Separated occupancies shall be individually classified in accordance with Section 302.1. Each separated space shall comply with this code based on the occupancy classification of that portion of the building. The most restrictive provisions of Chapter 9 that apply to the separate occupancies shall apply to the total nonfire-barrier-separated occupancy areas. Occupancy separations that serve to define fire area limits established in Chapter 9 for requiring a fire protection system shall also comply with Section 901.7.

  508.4.2 Allowable building area. In each story, the building area shall be such that the sum of the ratios of the actual building area of each separated occupancy divided by the allowable building area of each separated occupancy shall not exceed 1.

  508.4.3 Allowable building height and number of stories. Each separated occupancy shall comply with the building height limitations and story limitations based on the type of construction of the building in accordance with Section 503.1.

  Exception: Special provisions of Section 510 shall permit occupancies at building heights and number of stories other than provided in Section 503.1.

  508.4.4 Separation. Individual occupancies shall be separated from adjacent occupancies in accordance with Table 508.4.

• CHBC § 8-302.3 High relevance — show source text

  8-302.3 Occupancy separations. Required occupancy separations of more than one hour may be reduced to one-hour fire-resistive construction with all openings protected by not less than three-fourths-hour fire-resistive assemblies of the self-closing or automatic-closing type when the building is provided with an automatic sprinkler system throughout the entire building in accordance with Section 8-410.2. Doors equipped with automatic-closing devices shall be of a type which will function upon activation of a device which responds to products of combustion other than heat.

  Required occupancy separations of one hour may be omitted when the building is provided with an automatic sprinkler system throughout.

  8-302.4 Maximum floor area. Regardless of the use or character of occupancy, the area of a one-story qualified historical building or property may have, but shall not exceed, a floor area of 15,000 square feet (1393.5 m [2] ) unless such an increase is otherwise permitted in regular code. Multistory qualified historical buildings (including basements and cellars) shall be in accordance with regular code requirements.

  Exception: Historical buildings may be unlimited in floor area without fire-resistive area separation walls:

  1. When provided with an automatic sprinkler, or
  2. Residential occupancies of two stories or less when provided with a complete fire alarm and annunciation system and where the exiting system conforms to regular code.

  8-302.5 Maximum height. The maximum height and number of stories of a qualified historical building or property shall not be limited because of construction type, provided such height or number of stories does not exceed that of its historical design.

  8-302.5.1 High-rise buildings. Occupancies B, F-1, F-2 or S in high-rise buildings with floors located more than 75 feet above the lowest floor level having building access may be permitted with only the stories over 75 feet provided with an automatic fire sprinkler system if:

  1. The building construction type and the exits conform to regular code, and
  2. A complete building fire alarm and annunciation system is installed, and
  3. A fire barrier is provided between the sprinklered and nonsprinklered floors.

  8-302.6 Fire-resistive construction. See Chapter 8-4.

  8-302.7 Light and ventilation. Existing provisions for light and ventilation which do not, in the opinion of the enforcing agency, constitute a safety hazard may remain. See Section 8-303.6 for residential requirements. See Section 8-503 for Escape or Rescue Windows and Doors.

  SECTION 8-303 — RESIDENTIAL OCCUPANCIES

  8-303.1 Purpose. The purpose of this section is to provide regulations for those buildings designated as qualified historical buildings or properties and classified as residential occupancies. The CHBC requires enforcing agencies to accept any reasonably equivalent alternative to the regular code when dealing with qualified historical buildings and properties.

  8-303.2 Intent. The intent of the CHBC is to preserve the integrity of qualified historical buildings and properties while maintaining a reasonable degree of protection of life, health and safety for the occupants.

  8-303.3 Application and scope. The provisions of this section shall apply to all qualified historical buildings used for human habitation. Those dwelling units intended only for display, or public use with no residential use involved, need not comply with the requirements of this section.

  8-303.4 Fire escapes. See Chapter 8-5.

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• CHBC § 8-301 High relevance — show source text

  Section

  8-301 Purpose and Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8-302 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

  8-303 Residential Occupancies. . . . . . . . . . . . . . . . . . . . . . . . . 5

  CHAPTER 8-4 FIRE PROTECTION. . . . . . . . . . . . . . . . . . . . . . . 7

  Section

  8-401 Purpose, Intent and Scope . . . . . . . . . . . . . . . . . . . . . . . 7

  8-402 Fire-resistive Construction . . . . . . . . . . . . . . . . . . . . . . . 7

  8-403 Interior Finish Materials. . . . . . . . . . . . . . . . . . . . . . . . . . 7

  8-404 Wood Lath and Plaster. . . . . . . . . . . . . . . . . . . . . . . . . . . 7

  8-405 Occupancy Separation . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8-406 Maximum Floor Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

  8-407 Vertical Shafts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

  8-408 Roof Covering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8-409 Fire Alarm Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8-410 Automatic Sprinkler Systems. . . . . . . . . . . . . . . . . . . . . 8 8-411 Other Technologies . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 8-412 High-rise Buildings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

  CHAPTER 8-5 MEANS OF EGRESS . . . . . . . . . . . . . . . . . . . . . . 9

  Section

  8-501 Purpose, Intent and Scope . . . . . . . . . . . . . . . . . . . . . . . 9 8-502 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

  8-503 Escape or Rescue Windows and Doors. . . . . . . . . . . . 10 8-504 Railings and Guardrails . . . . . . . . . . . . . . . . . . . . . . . . . 10

• CHBC § 803.1.1.1 High relevance — show source text

  Interior wall and ceiling finish materials tested in accordance with NFPA 286 and meeting the acceptance criteria of Section 803.1.1.1, shall be permitted to be used where a Class A classification in accordance with ASTM E84 or UL 723 is required.

  [F] 424.3 Fire protection. Play structures shall be provided with the same level of approved fire suppression and detection devices required for other structures in the same occupancy.

  [BF] 424.4 Separation. Play structures shall have a horizontal separation from building walls, partitions and from elements of the means of egress of not less than 5 feet (1524 mm). Play structures shall have a horizontal separation from other play structures of not less than 20 feet (6090 mm).

  [BF] 424.5 Area limits. Play structures shall be not greater than 600 square feet (56 m [2] ) in area, unless a special investigation, acceptable to the building official, has demonstrated adequate fire safety.

  [BF] 424.5.1 Design. Play structures exceeding 600 square feet (56 m [2] ) in area or 10 feet (3048 mm) in height shall be designed in accordance with Chapter 16.

  SECTION 425—HYPERBARIC FACILITIES

  425.1 Hyperbaric facilities. Hyperbaric facilities shall meet the requirements contained in Chapter 14 of NFPA 99.

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  SPECIAL DETAILED REQUIREMENTS BASED ON OCCUPANCY AND USE

  SECTION [F] 426—COMBUSTIBLE DUSTS, GRAIN PROCESSING AND STORAGE

  [F] 426.1 General. The provisions of Sections 426.1.1 through 426.1.7 shall apply to buildings in which materials that produce combustible dusts are stored or handled. Buildings that store or handle combustible dusts shall comply with the applicable provisions of the California Fire Code . Where required by the fire code official, NFPA 652 and the applicable provisions of NFPA 61, NFPA 85, NFPA 120, NFPA 484, NFPA 654, NFPA 655 and NFPA 664 shall apply.

  [F] 426.1.1 Type of construction and height exceptions. Buildings shall be constructed in compliance with the height, number of stories and area limitations specified in Sections 504 and 506; except that where erected of Type I or II construction, the heights and areas of grain elevators and similar structures shall be unlimited, and where of Type IV construction, the maximum building height shall be 65 feet (19 812 mm) and except further that, in isolated areas, the maximum building height of Type IV structures shall be increased to 85 feet (25 908 mm).

  [F] 426.1.2 Grinding rooms. Every room or space occupied for grinding or other operations that produce combustible dusts in such a manner that the room or space is classified as a Group H-2 occupancy shall be enclosed with fire barriers constructed in accordance with Section 707 or horizontal assemblies constructed in accordance with Section 711, or both. The fire-resistance rating of the enclosure shall be not less than 2 hours where the area is not more than 3,000 square feet (279 m [2] ), and not less than 4 hours where the area is greater than 3,000 square feet (279 m [2] ).

• CHBC § 8-1 High relevance — show source text

  CONTENTS

  CHAPTER 8-1 ADMINISTRATION . . . . . . . . . . . . . . . . . . . . . . . 1

  Section

  8-101 Title, Purpose and Intent. . . . . . . . . . . . . . . . . . . . . . . . . 1 8-102 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 8-103 Organization and Enforcement . . . . . . . . . . . . . . . . . . . 1 8-104 Review and Appeals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 8-105 Construction Methods and Materials . . . . . . . . . . . . . . 2

  8-106 SHBSB Rulings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

  CHAPTER 8-2 DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

  Section

  8-201 Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

  CHAPTER 8-3 USE AND OCCUPANCY . . . . . . . . . . . . . . . . . . . 5

  Section

  8-301 Purpose and Scope. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 8-302 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

  8-303 Residential Occupancies. . . . . . . . . . . . . . . . . . . . . . . . . 5

  CHAPTER 8-4 FIRE PROTECTION. . . . . . . . . . . . . . . . . . . . . . . 7

  Section

  8-401 Purpose, Intent and Scope . . . . . . . . . . . . . . . . . . . . . . . 7

  8-402 Fire-resistive Construction . . . . . . . . . . . . . . . . . . . . . . . 7

  8-403 Interior Finish Materials. . . . . . . . . . . . . . . . . . . . . . . . . . 7

  8-404 Wood Lath and Plaster. . . . . . . . . . . . . . . . . . . . . . . . . . . 7

  8-405 Occupancy Separation . . . . . . . . . . . . . . . . . . . . . . . . . . 7 8-406 Maximum Floor Area . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

• CHBC § 903.3.1.1. Medium relevance — show source text

  H-4|2|3|4|NP|4|NP|4|NP|2|3|2|3|1|2|1|NP|NP|NP|1|NP|1d|NP|1|NP| |H-5|2|NP|4|NP|4|NP|4|NP|2|NP|2|NP|1|NP|1|NP|NP|NP|1|NP|1|NP|N|NP| |S = Buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
  NS = Buildings not equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
  N = No separation requirement.
  NP = Not Permitted.
  a. See Section 420.
  b. The required separation from areas used only for private or pleasure vehicles shall be reduced by 1 hour but not to less than 1 hour.
  c. See Sections 406.3.2 and 406.6.4.
  d. Separation is not required between occupancies of the same classification.
  e. See Section 422.2 for ambulatory care facilities.
  f. Occupancy separations that serve to define fire area limits established in Chapter 9 for requiring fire protection systems shall also comply with Section 707.3.10 and Table
  707.3.10 in accordance with Section 901.7.
  g._ [SFM]_Group I and F1 occupancies and Group R-2.1 and F-1 occupancies shall have a 3 hour separation.
  h._ [SFM]_Commercial kitchens not associated with cafeterias and similar dining facilities in Group I-2 and Group R-2.1 shall have a 2-hour separation and shall be protected by an
  automatic sprinkler system.
  i._ [SFM]__ Group E child-care separation with I-4 child care can be reduced to 1 hour with the installation of automatic fire sprinklers in accordance with Section 903.3.1.1.
  j. When not considered an accessory use in accordance with Section 508.2.4, the required separation between Group I-2 and required covers for accessible entrances and emergency_
  vehicle entrances, when in accordance with Section 406.5.2 and protected by an automatic sprinkler system, shall be reduced by 1 hour but not to less than 1 hour. See Section
  903.2.21.|S = Buildings equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
  NS = Buildings not equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
  N = No separation requirement.
  NP = Not Permitted.
  a. See Section 420.
  b. The required separation from areas used only for private or pleasure vehicles shall be reduced by 1 hour but not to less than 1 hour.
  c. See Sections 406.3.2 and 406.6.4.
  d. Separation is not required between occupancies of the same classification.
  e. See Section 422.2 for ambulatory care facilities.
  f. Occupancy separations that serve to define fire area limits established in Chapter 9 for requiring fire protection systems shall also comply with Section 707.3.10 and Table
  707.3.10 in accordance with Section 901.7.

• CHBC § 509.1 Medium relevance — show source text

  Unique consideration is taken for special use areas, such as covered mall buildings, motor-vehicle-related occupancies, special amusement buildings and aircraftrelated occupancies. Special facilities within other occupancies are considered, such as stages and platforms, motion picture projection rooms, children’s play structures and storm shelters. Finally, in order that the overall package of protection features can be easily understood, unique considerations for specific occupancies are also addressed.

  Chapter 5 General Building Heights and Areas.

  Chapter 5 contains the provisions that regulate the minimum type of construction for area limits and height limits based on the occupancy of the building. Height and area increases are permitted based on open frontage for fire department access, separation and the type of sprinkler protection provided (Sections 503 through 506, 510). Provisions include the protection and/or separation of incidental uses (Table 509.1), accessory occupancies (Section 508.2) and mixed uses in the same building (Sections 506.2.2, 508.3, 508.4 and 510). Unlimited area buildings are permitted in certain occupancies when they meet special provisions (Section 507). Live/work units are provided for in Section 508.5.

  Tables 504.3, 504.4 and 506.2 are the keystones in setting thresholds for building size based on the building’s use and the materials with which it is constructed. Respective to each group classification, the greater the fire-resistance rating of structural elements, as represented by the type of construction, the greater the floor area and height allowances. The greater the potential fire hazards indicated as a function of the group, the lesser the height and area allowances for a particular construction type.

  Chapter 6 Types of Construction.

  The interdependence of fire safety considerations can be seen by looking at Tables 601 and 705.5, which show the fire-resistance ratings of the principal structural elements comprising a building in relation to the five classifications for types of construction. Type I construction generally requires the highest fire-resistance ratings for structural elements, whereas Type V construction generally requires the least amount of fire-resistance-rated structural elements. The greater the potential fire hazards indicated as a function of the group, the lesser the height and area allowances for a particular construction type. Section 603 includes a list of combustible elements that can be part of a noncombustible building (Types I and II construction).

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  Chapter 7 Fire and Smoke Protection Features.

  Chapter 7 provisions present the fundamental concepts of fire performance that all buildings are expected to achieve in some form. This chapter identifies the acceptable materials, techniques and methods by which proposed construction can be designed and evaluated against to determine a building’s ability to limit the impact of fire.

  Chapter 7A Materials and Construction Methods for Exterior Wildfire Exposure.

  Requirements for Wildland-Urban Interface Areas are now located in Part 7 of Title 24, California Wildland-Urban Interface Code. The provisions of Part 7, California Wildland-Urban Interface Code, shall apply to buildings and structures located in the wildland-urban interface (WUI) or Fire Hazard Severity Zone.

  Chapter 8 Interior Finishes.

  Chapter 8 contains the performance requirements for controlling fire growth within buildings by restricting interior finish and decorative materials. The provisions of Chapter 8 require materials used as interior finishes and decorations to meet certain flame-spread index or flame-propagation criteria based on the relative fire hazard associated with the occupancy.

  Chapter 9 Fire Protection and Life Safety Systems.

• CHBC § 803.11 Medium relevance — show source text

  Occupancy classification also plays a key part in the appropriate protection measures. As such, threshold requirements for fire protection and means of egress systems are based on occupancy classification (see Chapters 9 and 10). Other sections of the code also contain requirements respective to the classification of building groups. For example, Section 706 specifies requirements for fire wall fire-resistance ratings that are tied to the occupancy classification of a building and Section 803.11 contains interior finish requirements that are dependent upon the occupancy classification. The use of the space, rather than the occupancy of the building, is utilized for determining occupant loading (Section 1004) and live loading (Section 1607).

  Chapter 4 Special Detailed Requirements Based on Occupancy and Use.

  Chapter 4 contains the requirements for protecting special uses and occupancies which are supplemental to the remainder of the code. For example, the height and area limitations established in Chapter 5 apply to all special occupancies unless Chapter 4 contains height and area limitations. In this case, the limitations in Chapter 4 supersede those in other sections. An example of this is the height and area limitations for open parking garages given in Section 406.5.4, which supersede the limitations given in Sections 504 and 506.

  In some instances, it may not be necessary to apply the provisions of Chapter 4. For example, if a covered mall building complies with the provisions of the code for Group M, Section 402 does not apply; however, other sections that address a use, process or operation must be applied to that specific occupancy, such as stages and platforms, special amusement buildings and hazardous materials (Sections 410, 411 and 414).

  The chapter includes requirements for buildings and conditions that apply to one or more groups, such as high-rise buildings, underground buildings or atriums. Special uses may also imply specific occupancies and operations, such as for Group H, hazardous materials, and uses with associated combustibility hazards, which are coordinated with the CFC. Unique consideration is taken for special use areas, such as covered mall buildings, motor-vehicle-related occupancies, special amusement buildings and aircraftrelated occupancies. Special facilities within other occupancies are considered, such as stages and platforms, motion picture projection rooms, children’s play structures and storm shelters. Finally, in order that the overall package of protection features can be easily understood, unique considerations for specific occupancies are also addressed.

  Chapter 5 General Building Heights and Areas.

  Chapter 5 contains the provisions that regulate the minimum type of construction for area limits and height limits based on the occupancy of the building. Height and area increases are permitted based on open frontage for fire department access, separation and the type of sprinkler protection provided (Sections 503 through 506, 510). Provisions include the protection and/or separation of incidental uses (Table 509.1), accessory occupancies (Section 508.2) and mixed uses in the same building (Sections 506.2.2, 508.3, 508.4 and 510). Unlimited area buildings are permitted in certain occupancies when they meet special provisions (Section 507). Live/work units are provided for in Section 508.5.

  Tables 504.3, 504.4 and 506.2 are the keystones in setting thresholds for building size based on the building’s use and the materials with which it is constructed. Respective to each group classification, the greater the fire-resistance rating of structural elements, as represented by the type of construction, the greater the floor area and height allowances. The greater the potential fire hazards indicated as a function of the group, the lesser the height and area allowances for a particular construction type.

• CHBC § 412.4 Medium relevance — show source text

  412.4 Residential aircraft hangars. Residential aircraft hangars shall comply with Sections 412.4.1 through 412.4.5.

  412.4.1 Fire separation. A hangar shall not be attached to a dwelling unless separated by a fire barrier having a fire-resistance rating of not less than 1 hour. Such separation shall be continuous from the foundation to the underside of the roof and unpierced except for doors leading to the dwelling unit. Doors into the dwelling unit shall be equipped with self-closing devices and conform to the requirements of Section 716 with a noncombustible raised sill not less than 4 inches (102 mm) in height. Openings from a hangar directly into a room used for sleeping purposes shall not be permitted.

  [BE] 412.4.2 Egress. A hangar shall provide two means of egress. One of the doors into the dwelling shall be considered as meeting only one of the two means of egress.

  [F] 412.4.3 Smoke alarms. Smoke alarms shall be provided within the hangar in accordance with Section 907.2.22.

  412.4.4 Independent systems. Electrical, mechanical and plumbing drain, waste and vent (DWV) systems installed within the hangar shall be independent of the systems installed within the dwelling. Building sewer lines shall be permitted to be connected outside the structures.

  Exception: Smoke detector wiring and feed for electrical subpanels in the hangar. 412.4.5 Height and area limits. Residential aircraft hangars shall be not greater than 2,000 square feet (186 m [2] ) in area and 20 feet (6096 mm) in building height.

  [F] 412.5 Aircraft paint hangars. Aircraft painting operations shall be conducted in an aircraft paint hangar that complies with the provisions of Sections 412.5.1 through 412.5.8. Buildings and structures, or parts thereof, used for the application of flammable finishes shall comply with the applicable provisions of Section 416.

  [F] 412.5.1 Occupancy classification. Aircraft paint hangars shall be classified in accordance with the provisions of Section 307.1. Aircraft paint hangars shall comply with the applicable requirements of this code and the California Fire Code for such

  occupancy.

  412.5.2 Construction. Aircraft paint hangars shall be of Type I or II construction.

  [F] 412.5.3 Spray equipment cleaning operations. Spray equipment cleaning operations shall be conducted in a liquid use, dispensing and mixing room.

  [F] 412.5.4 Operations. Only those flammable liquids necessary for painting operations shall be permitted in quantities less than the maximum allowable quantities per control area in Table 307.1(1). Spray equipment cleaning operations exceeding the maximum allowable quantities per control area in Table 307.1(1) shall be conducted in a liquid use, dispensing and mixing room.

  [F] 412.5.5 Storage. Storage of flammable or combustible liquids exceeding the maximum allowable quantities per control area in Table 307.1(1) shall be in a liquid storage room.

  [F] 412.5.6 Fire suppression. Aircraft paint hangars shall be provided with fire suppression as required by NFPA 409.

  [F] 412.5.7 Ventilation. Aircraft paint hangars shall be provided with ventilation as required in the California Mechanical Code .

• CHBC § 1006.3.4.1 Medium relevance — show source text

  1006.3.4.1 Mixed occupancies. Where one exit, or exit access stairway or ramp providing access to exits at other stories, is permitted to serve individual stories, mixed occupancies shall be permitted to be served by single exits provided that each individual occupancy complies with the applicable requirements of Table 1006.3.4(1) or 1006.3.4(2) for that occupancy. Where applicable, cumulative occupant loads from adjacent occupancies shall be considered to be in accordance with the provisions of Section 1004.1. In each story of a mixed occupancy building, the maximum number of occupants served by a single exit shall be such that the sum of the ratios of the calculated number of occupants of the space divided by the allowable number of occupants indicated in Table 1006.3.4(2) for each occupancy does not exceed one. Where dwelling units are located on a story with other occupancies, the actual number of dwelling units divided by four plus the ratio from the other occupancy does not exceed one.

  SECTION 1007—EXIT AND EXIT ACCESS DOORWAY CONFIGURATION

  1007.1 General. Exits, exit access doorways, and exit access stairways and ramps serving spaces, including individual building stories, shall be separated in accordance with the provisions of this section.

  1007.1.1 Two exits or exit access doorways. Where two exits, exit access doorways, exit access stairways or ramps, or any combination thereof, are required from any portion of the exit access, they shall be placed a distance apart equal to not less than one-half of the length of the maximum overall diagonal dimension of the building or area to be served measured in a straight line between them. Interlocking or scissor stairways shall be counted as one exit stairway.

  Exceptions:

  1. Where interior exit stairways or ramps are interconnected by a 1-hour fire-resistance-rated corridor conforming to the requirements of Section 1020, the required exit separation shall be measured along the shortest direct line of travel within the corridor.

  2. Where a building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2, the separation distance shall be not less than one-third of the length of the maximum overall diagonal dimension of the area served.

  1007.1.1.1 Measurement point. The separation distance required in Section 1007.1.1 shall be measured in accordance with the following:

  1. The separation distance to exit or exit access doorways shall be measured to any point along the width of the doorway.
  2. The separation distance to exit access stairways shall be measured to the closest riser.
  3. The separation distance to exit access ramps shall be measured to the start of the ramp run.

  1007.1.2 Three or more exits or exit access doorways. Where access to three or more exits is required, not less than two exit or exit access doorways shall be arranged in accordance with the provisions of Section 1007.1.1. Additional required exit or exit access doorways shall be arranged a reasonable distance apart so that if one becomes blocked, the others will be available.

  1007.1.3 Remoteness of exit access stairways or ramps. Where two exit access stairways or ramps provide the required means of egress to exits at another story, the required separation distance shall be maintained for all portions of such exit access stair ways or ramps.