CFC · California Fire Code

Roof stair access, roof‑mounted obstructions and prohibited security barriers

Homeowner summary: The California Fire Code requires buildings four or more stories to have an interior stair to the roof (unless the roof is very steep) and forbids installing rooftop security barriers or obstructions that would block firefighter access or occupant escape. Antennas and guy wires are allowed only with specific clearances (generally a 7‑ft minimum above the roof or encased in approved pipe) and other narrow exceptions; always confirm details with the local fire official.

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Last reviewed: July 6, 2026

What the code requires — 2-4 sentences

The California Fire Code requires that new buildings four or more stories above grade plane be provided with a stairway to the roof (unless the roof slope is greater than 4 units vertical in 12 units horizontal (33.3%)) — § 504.3. Roofs of commercial establishments must not have security barriers or other roof‑mounted obstructions installed in a way that would obstruct or render egress or access hazardous — § 504.4. The CFC also incorporates state Title 19 language and cross‑references maintenance and clearance limits for rooftop wires, guys and antennas that are relevant to roof access and firefighter safety — see § 504.4 and related provisions.

The single most important rule: do not install barbed wire, razor wire, chain‑link fencing, cables, antennas or similar rooftop obstructions on commercial roofs in a way that blocks or makes firefighter access or occupant egress hazardous — § 504.4.

Requirements in detail

Stairway access to roofs (controlling: § 504.3)

  • Where required: New buildings four or more stories above grade plane must provide a stairway to the roof. § 504.3 requires the stair to comply with Section 1011.12 and to be marked at street and floor levels indicating the stair continues to the roof.
  • Exception: If the roof slope is greater than 4:12 (≈33.3%), the stairway to the roof is not required under § 504.3 (that steep roofs are exempt). The stairway provision also refers to additional requirements when roofs are vegetative, landscaped, or used for occupancy — in those cases access must meet the occupancy‑specific requirements.

Key cross‑reference: stairway technical requirements are governed by CBC Section 1011.12 (stairway dimensions, penthouse access, hatch alternatives when roof is not occupiable).

Prohibited security barriers and roof‑mounted obstructions (controlling: § 504.4)

  • Prohibition: No person shall install or maintain any security barrier (examples listed: barbed wire, razor wire, chain‑link fencing) or any other fencing material, cable, aerial, antenna or other obstruction on the roof of any commercial establishment in such a manner as to obstruct or render egress or access hazardous during fire or other emergencies — § 504.4.
  • Exceptions/allowances: Guy wire, rods and aerial antenna masts may be attached to roofs with slope less than 30 degrees provided:
    • There is full clearance of 7 feet or more between the roof surface and the obstruction; and
    • Guy wires or rods required to support masts may be attached at a lateral distance from the mast not in excess of one‑sixth the height of the mast — see the exception language in § 504.4 (and the Title 19 reprint).

Roof obstruction clearance (supporting provision: § 316.4)

  • For roofs having slope less than 30 degrees, wires, cables, ropes, antennas or other suspended obstructions shall not create an obstruction that is less than 7 feet above the roof surface — this is the clearance requirement intended to prevent accidental injury/entanglement for personnel on the roof. Exceptions allow such obstructions if encased in white, 2‑inch minimum diameter plastic pipe (or approved equivalent) or if a solid obstruction below prevents accidental walking into the element — § 316.4.

Marking and signage

  • When a stairway continues to the roof, signage indicating that the stairway continues to the roof is required at street and floor levels per § 504.3 (the stair shall be marked at street and floor levels). Technical stair identification/sign format and size requirements are addressed in CBC § 1023.9 where applicable.

Decision‑relevant numeric thresholds (table)

Decision item Value / Threshold Code Reference
Building height requiring stair to roof 4 or more stories above grade plane § 504.3
Roof slope that exempts stair requirement Greater than 4 units vertical in 12 units horizontal (≈33.3%) § 504.3
Roof slope limit for guy‑wire/antenna exception Less than 30 degrees § 504.4 (exception)
Minimum clearance above roof for suspended obstructions 7 feet (2133 mm) § 316.4
Minimum pipe encasement diameter to permit lower clearance 2‑inch minimum diameter, white plastic § 316.4 (exception)
Lateral attachment limit for guy wire from mast Not more than one‑sixth the height of the mast § 504.4 (exception)

Exceptions & special cases

  • Roofs that are steep (greater than 4:12 slope) are exempt from the stair requirement in § 504.3; other allowed roof‑access alternatives (hatches, ladders) and access for elevator equipment are addressed in CBC § 1011.12 and related sections — consult those for details on hatch size and penthouse requirements.
  • Guy wires and antenna masts are allowed under tightly bounded exceptions (roof slope <30°, 7‑ft clearance, lateral limit of 1/6 mast height) — if you rely on these exceptions, provide clear drawings and measurements to the AHJ. § 504.4 contains this exception.
  • Suspended cables/wires may be acceptable if encased in the stated white 2‑inch pipe or if a solid obstruction below prevents accidental contact — see § 316.4. These are narrow exceptions and must be implemented exactly as written.
  • Where roofs are occupiable, or vegetative/landscaped, additional access and egress requirements apply; § 504.3 notes that stairways shall be provided as required for such occupancy classifications. Review occupancy chapters and CBC cross‑references for details.

If a needed detail is not present in the retrieved CFC excerpts you provided (for example, specific sign dimensions beyond the general marking requirement), the CFC or the referenced CBC sections should be consulted directly or the local fire code official contacted — I will point out where I relied on the provided text and where further code sections would need to be read.

Common mistakes

  • Treating the 30‑degree and 4:12 slope tests as identical — they are used in different places: § 504.3 uses 4:12 (≈33.3%) to exempt stair requirements; other exceptions reference 30 degrees for guy wire attachments and obstruction rules. Read each provision's exact wording and math.
  • Installing anything listed (barbed wire, antennas, cables) on commercial roofs without confirming it will not “obstruct or render egress or access hazardous” — the prohibition in § 504.4 is about hazardous obstruction, not merely about appearance. Even “small” installations can violate the rule if they impede firefighter movement or egress.
  • Assuming guard or hatch‑edge fall‑protection rules are in § 504.4 — guard requirements for roof hatches and distances to roof edges are in the CBC (for example, § 1015.7 / CBC) and other CFC sections; coordinate both codes when designing hatch openings adjacent to roof edges.
  • Using non‑white or undersized encasement for low‑height suspended wires and expecting compliance with the § 316.4 exception — the text specifies white, 2‑inch minimum pipe (or approved equivalent).

Worked example — concrete scenario

Scenario: New commercial office building, 5 stories above grade plane, flat roof (slope < 30°). Owner wants rooftop security (low chain‑link fencing), and several antenna masts with guy wires.

Apply the code:

  1. Stairway: Because the building is 5 stories, a stairway to the roof is required under § 504.3; the stair must comply with the stair requirements referenced in the CBC and be marked at street and floors indicating roof access.
  2. Security fencing: Installing chain‑link fencing on the commercial roof that could obstruct firefighter access or occupant egress would be prohibited by § 504.4. Do not install the fencing unless you can show it will not obstruct egress/access (the default is prohibition).
  3. Antenna masts and guy wires: Antenna masts and guy wires may be attached provided the roof slope is < 30° (yes) and there is full clearance of 7 feet or more between the roof surface and the wires (so design guy points/tensioning to keep the cable at ≥7 ft height above the roof). Alternatively, encase wires in white 2‑inch pipe to permit lesser clearances per § 316.4. If guy wires are attached laterally, ensure attachment points are within one‑sixth the mast height of the mast (i.e., for a 12‑ft mast the lateral distance ≤ 2 ft). Cite exceptions and document compliance for the AHJ.

Related provisions (select CFC / CBC sections you should check)

  • § 504.3 — Stairway access to roof (primary)
  • § 504.4 — Roof access; prohibition of security barriers and obstructions (primary)
  • § 316.4 — Obstructions on roofs; 7‑ft clearance and encasement exception (hazards to firefighters)
  • CBC § 1011.12 — Stairway to roof technical provisions and penthouse/hatch alternatives (cross reference used by § 504.3)
  • CBC § 1015.7 — Guards around roof hatch openings (where hatch is within 10 ft of roof edge) — relevant when designing roof access points near edges.

If you want, I can prepare a one‑page checklist (plan review checklist) you can submit to your local AHJ showing how your rooftop plan meets § 504.3 and § 504.4 (including drawing callouts for 7‑ft clearance, mast lateral distances, and signage).

Code references

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

  • CFC § 503.6 High relevance — show source text

    FIRE SERVICE FEATURES

    enforcement and fire-protection agencies. There shall be no less than one such access gate and there shall be as many such gates as needed to assure access to all major buildings and ground areas. If such gates are to be equipped with locks, the locking devices shall be designed to permit ready entrance by the use of the chain or bolt-cutting devices with which the local law enforcement and fire-protection agencies may be equipped.

    503.6 Security gates. The installation of security gates across a fire apparatus access road shall be approved by the fire code official. Where security gates are installed, they shall have an approved means of emergency operation. The security gates and the emergency operation shall be maintained operational at all times. Electric gate operators, where provided, shall be listed in accordance with UL 325. Gates intended for automatic operation shall be designed, constructed and installed to comply with the requirements of ASTM F2200.

    SECTION 504—ACCESS TO BUILDING OPENINGS AND ROOFS

    504.1 Required access. Exterior doors and openings required by this code or the California Building Code shall be maintained with ready access for emergency access by the fire department. An approved access walkway leading from fire apparatus access roads to exterior openings shall be provided where required by the fire code official.

    [California Code of Regulations, Title 19, Division 1, §3.05(b)] Fire Department Access and Egress. (Roofs)

    (b) Roofs. No person shall install or maintain any security barrier such as barbed wire fencing, razor wire fencing, chain link fencing or any other fencing material, cable, aerial, antenna or other obstruction on the roof of any commercial establishment in such a manner as to obstruct or render egress or access hazardous in the event of fire or other emergency.

    Exception: Guy wire, rods and aerial antenna masts may be attached to a roof structure having a slope of less than 30 degrees provided there is full clearance of seven feet or more between the roof and said obstruction. Guy wire or rods required to support aerial or antenna masts may be attached to a roof structure a lateral distance from the mast not in excess of one-sixth the height of the mast.

    504.2 Maintenance of exterior doors and openings. Exterior doors and their function shall not be eliminated without prior approval. Exterior doors that have been rendered nonfunctional and that retain a functional door exterior appearance shall have a sign affixed to the exterior side of the door with the words “THIS DOOR BLOCKED.” The sign shall consist of letters having a principal stroke of not less than [3] / 4 inch (19.1 mm) wide and not less than 6 inches (152 mm) high on a contrasting background. Required fire department access doors shall not be obstructed or eliminated. Exit and exit access doors shall comply with Chapter 10. Access doors for high-piled combustible storage shall comply with Section 3206.7.

    504.3 Stairway access to roof. New buildings four or more stories above grade plane, except those with a roof slope greater than 4 units vertical in 12 units horizontal (33.3-percent slope), shall be provided with a stairway to the roof. Stairway access to the roof shall be in accordance with Section 1011.12. Such stairway shall be marked at street and floor levels with a sign indicating that the stairway continues to the roof. Where the roof is a vegetative roof, includes a landscaped roof area, or is used or for other purposes, stairways shall be provided as required for such occupancy classification.

  • CFC § 1023.7 High relevance — show source text

    In each case, openings into the fire-resistance-rated construction shall be limited to those needed for maintenance and operation and shall be protected by opening protectives in accordance with Section 716 of the California Building Code for shaft enclosures.

    The interior exit stairway and ramp ventilation systems shall be independent of other building ventilation systems.

    [BE] 1023.7 Interior exit stairway and ramp exterior walls. Exterior walls of the interior exit stairway or ramp shall comply with the requirements of Section 705 of the California Building Code for exterior walls. Where nonrated walls or unprotected openings enclose the exterior of the stairway or ramps and the walls or openings are exposed by other parts of the building at an angle of less than 180 degrees (3.14 rad), building construction within 10 feet (3048 mm) of the exterior walls of the interior exit stairway or ramp shall comply with Sections 1023.7.1 and 1023.7.2.

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    [BE] 1023.7.1 Building exterior walls. Building exterior walls within 10 feet (3048 mm) horizontally of a nonrated wall or unprotected opening in an interior exit stairway or ramp shall have a fire-resistance rating of not less than 1 hour. Openings within such exterior walls shall be protected by opening protectives having a fire protection rating of not less than [3] / 4 hour. This construction shall extend vertically from the ground to a point 10 feet (3048 mm) above the topmost landing of the stairway or ramp, or to the roof line, whichever is lower.

    [BE] 1023.7.2 Roof assemblies. Where the interior exit stairway or ramp extends above an adjacent roof of the same building, the adjacent roof assembly shall have a fire-resistance rating of not less than 1 hour and openings shall be protected by opening protectives having a fire protection rating of not less than [3] / 4 hour. The fire-resistance rating and opening protection shall extend horizontally not less than 10 feet (3048 mm) from the exterior wall of the stairway or ramp, or to the perimeter of the adjacent roof, whichever is less.

    Exceptions:

    1. The roof assembly need not be rated and openings in the roof need not be protected where they are adjacent to the penthouse of the stairway or ramp, unless otherwise required by this code.
    2. The adjacent roof assembly need not be rated and adjacent openings in the roof need not be protected where the exterior wall of the stairway or ramp has a fire-resistance rating of 1 hour and openings are protected by opening protectives having a fire protection rating of not less than [3] / 4 hour, extending not less than 10 feet (3048 mm) above the roof.

    [BE] 1023.8 Barriers at level of exit discharge. An interior exit stairway and ramp shall not continue below its level of exit discharge unless an approved barrier is provided at the level of exit discharge to prevent persons from unintentionally continuing into levels below. Directional exit signs shall be provided as specified in Section 1013.

  • CFC § 1030.17.4 Medium relevance — show source text

    From a height of 36 inches (914 mm) to 42 inches (1067 mm), guards shall not have openings that allow passage of a sphere 4 [3] / 8 inches (111 mm) in diameter. 2. The triangular openings at the open sides of a stair, formed by the riser, tread and bottom rail shall not allow passage of a sphere 6 inches (152 mm) in diameter. 3. At elevated walking surfaces for access to and use of electrical, mechanical or plumbing systems or equipment, guards shall not have openings that allow passage of a sphere 21 inches (533 mm) in diameter. 4. In areas that are not open to the public within occupancies in Group I-3, F, H or S, and for alternating tread devices and ship’s ladders, guards shall not have openings that allow passage of a sphere 21 inches (533 mm) in diameter. 5. In assembly seating areas, guards required at the end of aisles in accordance with Section 1030.17.4 shall not have openings that allow passage of a sphere 4 inches (102 mm) in diameter up to a height of 26 inches (660 mm). From a height of 26 inches (660 mm) to 42 inches (1067 mm) above the adjacent walking surfaces, guards shall not have openings that allow passage of a sphere 8 inches (203 mm) in diameter. 6. Within individual dwelling units and sleeping units in Group R-2 and R-3 occupancies, guards on the open sides of stairs shall not have openings that allow passage of a sphere 4 [3] / 8 (111 mm) inches in diameter. 7. [SFM] In lifeguard towers not open to the public, guards shall not have openings which allow passage of a sphere 21 inches (533 mm) in diameter.

    [BE] 1015.5 Screen porches. Porches and decks that are enclosed with insect screening shall be provided with guards where the walking surface is located more than 30 inches (762 mm) above the floor or grade below.

    [BE] 1015.6 Mechanical equipment, systems and devices. Guards shall be provided where various components that require service are located within 10 feet (3048 mm) of a roof edge or open side of a walking surface and such edge or open side is located more than 30

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    MEANS OF EGRESS

    inches (762 mm) above the floor, roof or grade below. The guard shall extend not less than 30 inches (762 mm) beyond each end of such components. The guard shall be constructed so as to prevent the passage of a sphere 21 inches (533 mm) in diameter.

    Exception: Guards are not required where personal fall arrest anchorage connector devices that comply with ANSI/ASSE Z359.1 are installed.

    [BE] 1015.7 Roof access. Guards shall be provided where the roof hatch opening is located within 10 feet (3048 mm) of a roof edge or open side of a walking surface and such edge or open side is located more than 30 inches (762 mm) above the floor, roof or grade below. The guard shall extend not less than 30 inches (762 mm) beyond each end of the hatch parallel to the roof edge. The guard shall be constructed so as to prevent the passage of a sphere 21 inches (533 mm) in diameter.

  • CFC § 1015.4 Medium relevance — show source text

    1015.4 Opening limitations. Required guards shall not have openings that allow passage of a sphere 4 inches (102 mm) in diameter from the walking surface to the required guard height.

    Exceptions:

    1. From a height of 36 inches (914 mm) to 42 inches (1067 mm), guards shall not have openings that allow passage of a sphere 4 [3] / 8 inches (111 mm) in diameter.
    2. The triangular openings at the open sides of a stair, formed by the riser, tread and bottom rail shall not allow passage of a sphere 6 inches (152 mm) in diameter.
    3. At elevated walking surfaces for access to and use of electrical, mechanical or plumbing systems or equipment, guards shall not have openings that allow passage of a sphere 21 inches (533 mm) in diameter.
    4. In areas that are not open to the public within occupancies in Group I-3, F, H or S, and for alternating tread devices and ships ladders, guards shall not have openings that allow passage of a sphere 21 inches (533 mm) in diameter.
    5. In assembly seating areas, guards required at the end of aisles in accordance with Section 1030.17.4 shall not have openings that allow passage of a sphere 4 inches (102 mm) in diameter up to a height of 26 inches (660 mm). From a height of 26 inches (660 mm) to 42 inches (1067 mm) above the adjacent walking surfaces, guards shall not have openings that allow passage of a sphere 8 inches (203 mm) in diameter.
    6. Within individual dwelling units and sleeping units in Group R-2 and R-3 occupancies, guards on the open sides of stairs shall not have openings that allow passage of a sphere 4 [3] / 8 (111 mm) inches in diameter. 7. In lifeguard towers not open to the public, guards shall not have openings which allow passage of a sphere 21 inches (533 mm) in diameter.

    1015.5 Screen porches. Porches and decks that are enclosed with insect screening shall be provided with guards where the walking surface is located more than 30 inches (762 mm) above the floor or grade below.

    1015.6 Mechanical equipment, systems and devices. Guards shall be provided where various components that require service are located within 10 feet (3048 mm) of a roof edge or open side of a walking surface and such edge or open side is located more than 30 inches (762 mm) above the floor, roof or grade below. The guard shall extend not less than 30 inches (762 mm) beyond each end of such components. The guard shall be constructed so as to prevent the passage of a sphere 21 inches (533 mm) in diameter.

    Exception: Guards are not required where personal fall arrest anchorage connector devices that comply with ANSI/ASSE Z 359.1 are installed.

    1015.7 Roof access. Guards shall be provided where the roof hatch opening is located within 10 feet (3048 mm) of a roof edge or open side of a walking surface and such edge or open side is located more than 30 inches (762 mm) above the floor, roof or grade below. The guard shall extend not less than 30 inches (762 mm) beyond each end of the hatch parallel to the roof edge. The guard shall be constructed so as to prevent the passage of a sphere 21 inches (533 mm) in diameter.

    Exception: Guards are not required where personal fall arrest anchorage connector devices that comply with ANSI/ASSE Z 359.1 are installed.

  • CFC § 504.4 Medium relevance — show source text

    504.4 Roof access. No person shall install or maintain any security barrier such as barbed wire fencing, razor wire fencing, chain link fencing or any other fencing material, cable, aerial, antenna or other obstruction on the roof of any commercial establishment in such a manner as to obstruct or render egress or access hazardous in the event of fire or other emergency.

    Exception: Guy wire, rods and aerial antenna masts may be attached to a roof structure having a slope of less than 30 degrees provided there is full clearance of 7 feet or more between the roof and said obstruction. Guy wire or rods required to support aerial or antenna masts may be attached to a roof structure a lateral distance from the mast not in excess of one-sixth the height of the mast.

    SECTION 505—PREMISES IDENTIFICATION

    505.1 Address identification. New and existing buildings shall be provided with approved address identification. The address identification shall be legible and placed in a position that is visible from the street or road fronting the property. Address identification characters shall contrast with their background. Address numbers shall be Arabic numbers or alphabetical letters. Numbers shall not be spelled out. Each character shall be not less than 4 inches (102 mm) high with a minimum stroke width of [1] / 2 inch (12.7 mm). Where required by the fire code official, address identification shall be provided in additional approved locations to facilitate emergency response. Where access is by means of a private road and the building cannot be viewed from the public way, a monument, pole or other sign or means shall be used to identify the structure. Address identification shall be maintained.

    505.2 Street or road signs. Streets and roads shall be identified with approved signs. Temporary signs shall be installed at each street intersection when construction of new roadways allows passage by vehicles. Signs shall be of an approved size, weather resistant and be maintained until replaced by permanent signs.

    SECTION 506—KEY BOXES

    506.1 Where required. Where access to or within a structure or an area is restricted because of secured openings or where immediate access is necessary for life-saving or firefighting purposes, the fire code official is authorized to require a key box to be installed in an approved location. The key box shall be of an approved type listed in accordance with UL 1037, and shall contain keys to gain necessary access as required by the fire code official.

    506.1.1 Locks. An approved lock shall be installed on gates or similar barriers where required by the fire code official.

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    506.1.2 Key boxes for nonstandardized fire service elevator keys. Key boxes provided for nonstandardized fire service elevator keys shall comply with Section 506.1 and all of the following:

    1. The key box shall be compatible with an existing rapid entry key box system in use in the jurisdiction and approved by the fire code official.

    2. The front cover shall be permanently labeled with the words “FIRE DEPARTMENT USE ONLY—ELEVATOR KEYS.”

    3. The key box shall be mounted at each elevator bank at the lobby nearest to the lowest level of fire department access.

    4. The key box shall be mounted 5 feet 6 inches (1676 mm) above the finished floor to the right side of the elevator bank.

    5. Contents of the key box are limited to fire service elevator keys.

  • CFC § 316.3 Medium relevance — show source text

    316.3 Pitfalls. The intentional design or alteration of buildings to disable, injure, maim or kill intruders is prohibited. A person shall not install and use firearms, sharp or pointed objects, razor wire, explosives, flammable or combustible liquid containers, or dispensers containing highly toxic, toxic, irritant or other hazardous materials in a manner that could passively or actively disable, injure, maim or kill a firefighter who forcibly enters a building for the purpose of controlling or extinguishing a fire, rescuing trapped occupants or rendering other emergency assistance.

    316.4 Obstructions on roofs. Wires, cables, ropes, antennas, or other suspended obstructions installed on the roof of a building having a roof slope of less than 30 degrees (0.52 rad) shall not create an obstruction that is less than 7 feet (2133 mm) high above the surface of the roof.

    Exceptions:

    1. Such obstruction shall be permitted where the wire, cable, rope, antenna or suspended obstruction is encased in a white, 2-inch (51 mm) minimum diameter plastic pipe or an approved equivalent.
    2. Such obstruction shall be permitted where there is a solid obstruction below such that accidentally walking into the wire, cable, rope, antenna or suspended obstruction is not possible.

    [California Code of Regulations, Title 19, Division 1, §3.05(b)] Fire Department Access and Egress. (Roofs).

    (b) Roofs. No person shall install or maintain any security barrier such as barbed wire fencing, razor wire fencing, chain link fencing or any other fencing material, cable, aerial, antenna or other obstruction on the roof of any commercial establishment in such a manner as to obstruct or render egress or access hazardous in the event of fire or other emergency.

    Exception: Guy wire, rods and aerial antenna masts may be attached to a roof structure having a slope of less than 30 degrees provided there is full clearance of seven feet or more between the roof and said obstruction. Guy wire or rods required to support aerial or antenna masts may be attached to a roof structure a lateral distance from the mast not in excess of one-sixth the height of the mast.

    316.5 Security device. Any security device or system that emits any medium that could obscure a means of egress in any building, structure or premise shall be prohibited.

    316.6 Structures and outdoor storage underneath high-voltage transmission lines. Structures and outdoor storage underneath high-voltage transmission lines shall comply with Sections 316.6.1 and 316.6.2, respectively.

    316.6.1 Structures. Structures shall not be constructed within the utility easement beneath high-voltage transmission lines.

    Exception: Restrooms and unoccupied telecommunication structures of noncombustible construction less than 15 feet (4572 mm) in height.

    316.6.2 Outdoor storage. Outdoor storage within the utility easement underneath high-voltage transmission lines shall be limited to noncombustible material. Storage of hazardous materials including, but not limited to, flammable and combustible liquids is prohibited.

    Exception: Combustible storage, including vehicles and fuel storage for backup power equipment serving public utility equipment, is allowed, provided that a plan indicating the storage configuration is submitted and approved.

    SECTION 317—VEGETATIVE AND LANDSCAPED ROOFS

    317.1 General. .Vegetative roofs and landscaped roofs shall comply with Sections 1505 and 1507.15 of the California Building Code and be installed and maintained in accordance with Sections 317.2 through 317.4.

  • CFC § 503.5.1 Medium relevance — show source text

    503.5.1 Secured gates and barricades. Where required, gates and barricades shall be secured in an approved manner. Roads, trails and other accessways that have been closed and obstructed in the manner prescribed by Section 503.5 shall not be trespassed on or used unless authorized by the owner and the fire code official.

    Exception: The restriction on use shall not apply to public officers acting within the scope of duty.

    503.5.2 Fences and Gates. School grounds may be fenced and gates therein may be equipped with locks, provided that safe disper- sal areas based on 3 square feet (0.28 m [2] ) per occupant are located between the school and the fence. Such required safe dispersal areas shall not be located less than 50 feet (15 240 mm) from school buildings.

    Every public and private school shall conform with Section 32020 of the Education Code which states:

    The governing board of every public school district, and the governing authority of every private school, which main- tains any building used for the instruction or housing of school pupils on land entirely enclosed (except for building walls) by fences of walls, shall, through cooperation with the local law enforcement and fire-protection agencies having jurisdiction of the area, make provision for the erection of gates in such fences or walls. The gates shall be of sufficient size to permit the entrance of the ambulances, police equipment and firefighting apparatus used by the law

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    enforcement and fire-protection agencies. There shall be no less than one such access gate and there shall be as many such gates as needed to assure access to all major buildings and ground areas. If such gates are to be equipped with locks, the locking devices shall be designed to permit ready entrance by the use of the chain or bolt-cutting devices with which the local law enforcement and fire-protection agencies may be equipped.

    503.6 Security gates. The installation of security gates across a fire apparatus access road shall be approved by the fire code official. Where security gates are installed, they shall have an approved means of emergency operation. The security gates and the emergency operation shall be maintained operational at all times. Electric gate operators, where provided, shall be listed in accordance with UL 325. Gates intended for automatic operation shall be designed, constructed and installed to comply with the requirements of ASTM F2200.

    SECTION 504—ACCESS TO BUILDING OPENINGS AND ROOFS

    504.1 Required access. Exterior doors and openings required by this code or the California Building Code shall be maintained with ready access for emergency access by the fire department. An approved access walkway leading from fire apparatus access roads to exterior openings shall be provided where required by the fire code official.

    [California Code of Regulations, Title 19, Division 1, §3.05(b)] Fire Department Access and Egress. (Roofs)

    (b) Roofs. No person shall install or maintain any security barrier such as barbed wire fencing, razor wire fencing, chain link fencing or any other fencing material, cable, aerial, antenna or other obstruction on the roof of any commercial establishment in such a manner as to obstruct or render egress or access hazardous in the event of fire or other emergency.

  • CFC § 315.7.7 Medium relevance — show source text

    315.7.7 Prohibited locations. Pallets shall not be stored underneath high-voltage transmission lines, elevated roadways or elevated railways.

    SECTION 316—HAZARDS TO FIREFIGHTERS

    316.1 Trapdoors to be closed. Trapdoors and scuttle covers, other than those that are within a dwelling unit or automatically operated, shall be kept closed at all times except when in use.

    316.2 Shaftway markings. Vertical shafts shall be identified as required by this section.

    316.2.1 Exterior access to shaftways. Outside openings that can be reached by the fire department and that open directly on a hoistway or shaftway communicating between two or more floors in a building shall be plainly marked with the word “SHAFT

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    WAY” in red letters not less than 6 inches (152 mm) high on a white background. Such warning signs shall be placed so as to be readily discernible from the outside of the building.

    316.2.2 Interior access to shaftways. Door or window openings to a hoistway or shaftway from the interior of the building shall be plainly marked with the word “SHAFTWAY” in red letters not less than 6 inches (152 mm) high on a white background. Such warning signs shall be placed so as to be readily discernible.

    Exception: Marking shall not be required on shaftway openings that are readily discernible as openings onto a shaftway by the construction or arrangement.

    316.3 Pitfalls. The intentional design or alteration of buildings to disable, injure, maim or kill intruders is prohibited. A person shall not install and use firearms, sharp or pointed objects, razor wire, explosives, flammable or combustible liquid containers, or dispensers containing highly toxic, toxic, irritant or other hazardous materials in a manner that could passively or actively disable, injure, maim or kill a firefighter who forcibly enters a building for the purpose of controlling or extinguishing a fire, rescuing trapped occupants or rendering other emergency assistance.

    316.4 Obstructions on roofs. Wires, cables, ropes, antennas, or other suspended obstructions installed on the roof of a building having a roof slope of less than 30 degrees (0.52 rad) shall not create an obstruction that is less than 7 feet (2133 mm) high above the surface of the roof.

    Exceptions:

    1. Such obstruction shall be permitted where the wire, cable, rope, antenna or suspended obstruction is encased in a white, 2-inch (51 mm) minimum diameter plastic pipe or an approved equivalent.
    2. Such obstruction shall be permitted where there is a solid obstruction below such that accidentally walking into the wire, cable, rope, antenna or suspended obstruction is not possible.

    [California Code of Regulations, Title 19, Division 1, §3.05(b)] Fire Department Access and Egress. (Roofs).

    (b) Roofs. No person shall install or maintain any security barrier such as barbed wire fencing, razor wire fencing, chain link fencing or any other fencing material, cable, aerial, antenna or other obstruction on the roof of any commercial establishment in such a manner as to obstruct or render egress or access hazardous in the event of fire or other emergency.

  • CFC § 1009.3 Medium relevance — show source text

    Exceptions:

    1. One accessible means of egress is required from an accessible mezzanine level in accordance with Section 1009.3, 1009.4 or 1009.5, and Chapter 11A or 11B, as applicable.
    2. In assembly areas with ramped aisles or stepped aisles, one accessible means of egress is permitted where the common path of egress travel is accessible and meets the requirements in Section 1030.8 and Chapter 11A or 11B, as applicable.

    2025 CALIFORNIA BUILDING CODE 10-15

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

    MEANS OF EGRESS

    1009.2 Continuity and components. Each required accessible means of egress shall be continuous to a public way and shall consist of one or more of the following components:

    1. Accessible routes complying with Chapter 11A, Sections 1110A.1 and 1119A, or Chapter 11B, Sections 11B-206 and 11B-402, as applicable.
    2. Interior exit stairways complying with Sections 1009.3 and 1023, and Chapter 11A, Section 1123A, or Chapter 11B, Sections 11B-210 and 11B-504, as applicable.
    3. Exit access stairways complying with Sections 1009.3 and 1019.3 or 1019.4, and Chapter 11A, Section 1123A, or Chapter 11B, Sections 11B-210 and 11B-504, as applicable.
    4. Exterior exit stairways complying with Sections 1009.3 and 1027, Chapter 11A, Section 1115A, or Chapter 11B, Sections 11B- 210 and 11B-504, as applicable, and serving levels other than the level of exit discharge.
    5. Elevators complying with Section 1009.4, and Chapter 11A, Section 1124A, or Chapter 11B, Sections 11B-206.6 and 11B-407, as applicable.
    6. Platform lifts complying with Section 1009.5, and Chapter 11A, Section 1124A, or Chapter 11B, Sections 11B-206.7, 11B-207.2 and 11B-410, as applicable.
    7. Horizontal exits complying with Section 1026.
    8. Ramps complying with Section 1012, and Chapter 11A, Sections 1114A and 1122A, or Chapter 11B, 11B-405, as applicable.
    9. Areas of refuge complying with Section 1009.6.
    10. Exterior areas for assisted rescue complying with Section 1009.7 serving exits at the level of exit discharge. 11. Safe dispersal areas where they are allowed under Section 1028.5.

    1009.2.1 Elevators required. In buildings where a required accessible floor is four or more stories above or below a level of exit discharge or where an accessible occupiable roof is above a story that is three or more stories above the level of exit discharge, not less than one required accessible means of egress shall include an elevator complying with Section 1009.4.

    Exceptions:

  • CFC § 5.1. Medium relevance — show source text

    Exceptions:

    1. Flights of stairways within dwelling units and flights of spiral stairways are permitted to have a handrail on one side only.

    2. Decks, patios and walkways that have a single change in elevation where the landing depth on each side of the change of elevation is greater than what is required for a landing do not require handrails.

    3. [SFM] In Group R-3 occupancies, a continuous run of treads or flight of stairs with less than four risers does not require handrails.

    4. Changes in room elevations of three or fewer risers within dwelling units and sleeping units in Groups R-2 and R-3 do not require handrails.

    5. Where a platform lift is in a stationary position and the floor of the platform lift serves as the upper landing of a stairway, handrails shall not be required on the stairway, provided that all of the following criteria are met: 5.1. The stairway contains not more than two risers. 5.2. A handhold, positioned horizontally or vertically, is located on one side of the stairway adjacent to the top landing. 5.3. The handhold is located not less than 34 inches (864 mm) and not more than 42 inches (1067 mm) above the bottom landing of the stairway. 5.4. The handhold gripping surface complies with Section 1014.4, and is not less than 4.5 inches (114 mm) in length.

    1011.12 Stairway to roof. In buildings four or more stories above grade plane, one stairway shall extend to the roof surface unless the roof has a slope steeper than four units vertical in 12 units horizontal (33-percent slope).

    Exception: Other than where required by Section 1011.12.1, in buildings without an occupiable roof access to the roof from the top story shall be permitted to be by an alternating tread device, a ship’s ladder or a permanent ladder.

    1011.12.1 Stairway to elevator equipment. Roofs and penthouses containing elevator equipment that must be accessed for maintenance are required to be accessed by a stairway.

    1011.12.2 Roof access. Where a stairway is provided to a roof, access to the roof shall be provided through a penthouse complying with Section 1511.2.

    Exception: In buildings without an occupiable roof, access to the roof shall be permitted to be a roof hatch or trap door not less than 16 square feet (1.5 m [2] ) in area and having a minimum dimension of 2 feet (610 mm).

    1011.13 Guards. Guards shall be provided along stairways and landings where required by Section 1015 and shall be constructed in accordance with Section 1015. Where the roof hatch opening providing the required access is located within 10 feet (3049 mm) of the roof edge, such roof access or roof edge shall be protected by guards installed in accordance with Section 1015.

  • CFC § 1023.8 Medium relevance — show source text

    Exceptions:

    1. The roof assembly need not be rated and openings in the roof need not be protected where they are adjacent to the penthouse of the stairway or ramp, unless otherwise required by this code.
    2. The adjacent roof assembly need not be rated and adjacent openings in the roof need not be protected where the exterior wall of the stairway or ramp has a fire-resistance rating of 1 hour and openings are protected by opening protectives having a fire protection rating of not less than [3] / 4 hour, extending not less than 10 feet (3048 mm) above the roof.

    1023.8 Barrier at level of exit discharge. An interior exit stairway and ramp shall not continue below its level of exit discharge unless an approved barrier is provided at the level of exit discharge to prevent persons from unintentionally continuing into levels below. Directional exit signs shall be provided as specified in Section 1013.

    1023.9 Stairway identification signs. A sign shall be provided at each floor landing in an interior exit stairway and ramp connecting more than three stories designating the floor level, the terminus of the top and bottom of the interior exit stairway and ramp and the identification of the stairway or ramp. The signage shall state the story of and direction to the exit discharge, and the availability of roof access from the interior exit stairway and ramp for the fire department. The bottom of the sign shall be located not less than 5 feet (1524 mm) above the floor landing in a position that is readily visible when the doors are in the open and closed positions.

    In addition to the stairway identification sign, raised characters and braille floor identification signs that comply with Chapter 11A, Section 1143A or Chapter 11B shall be located at the landing of each floor level, placed adjacent to the door on the latch side, in all enclosed stairways in buildings two or more stories in height to identify the floor level. At the exit discharge level, the sign shall include a raised five pointed star located to the left of the identifying floor level. The outside diameter of the star shall be the same as the height of the raised characters.

    1023.9.1 Signage requirements. Stairway identification signs shall comply with all of the following requirements:

    1. The signs shall be a minimum size of 18 inches (457 mm) by 12 inches (305 mm).

    2. The letters designating the identification of the interior exit stairway and ramp such as STAIR NO. 1 or WEST STAIR, shall be placed at the top of the sign and shall be not less than 1 [ 1] / 2 inches (38 mm) in height block lettering with [1] / 4 -inch (6 mm) strokes.

    3. The number designating the floor level shall be not less than 5 inches (127 mm) in height with [3] / 4 -inch (19 mm) strokes and located in the center of the sign. The mezzanine levels shall have the letter “M” preceding the floor level. Basement levels shall have the letter “B” preceding the floor number.

    4. Other lettering and numbers shall be not less than 1 inch (25 mm) in height. 5. The stairway’s upper terminus, such as ROOF ACCESS or NO ROOF ACCESS, shall be placed under the stairway identification in 1-inch-high (25 mm) block lettering with [1] / 4 -inch (6 mm) strokes.

  • CFC § 5.2. Medium relevance — show source text

    Upon loss of power to the turnstile or any part of the access control system that secures the physical barrier. 5.2. Upon actuation of a clearly identified manual release device with ready access that results in direct interruption of power to each secured physical barrier, after which such barriers remain in the open position for not less than 30 seconds. The manual release device shall be positioned at one of the following locations: 5.2.1. On the egress side of each security access turnstile lane. 5.2.2. At an approved location where it can be actuated by an employee assigned to the area at all times that the building is occupied. 5.3. Upon actuation of the building fire alarm system, if provided, after which the physical barrier remains in the open position until the fire alarm system is manually reset. Exception: Actuation of a manual fire alarm box. 5.4. Upon actuation of the building automatic sprinkler system or fire detection system, after which the physical barrier remains in the open position until the fire alarm system is manually reset.

    1010.5.3 High turnstile. Turnstiles more than 39 inches (991 mm) high shall meet the requirements for revolving doors or the requirements of Section 1010.5.2 for security access turnstiles.

    1010.5.4 Additional door. Where serving an occupant load greater than 300, each turnstile that is not portable shall have a sidehinged swinging door that conforms to Section 1010.1 within 50 feet (15 240 mm).

    Exception: A side-hinged swinging door is not required at security access turnstiles that comply with Section 1010.5.2.

    SECTION 1011—STAIRWAYS

    [DSA-AC] In addition to the requirements of this section, means of egress, which provide access to, or egress from, buildings or facilities where accessibility is required for applications listed in Section 1.9.1 regulated by the Division of the State Architect—Access Compliance, shall also comply with Chapter 11A or Chapter 11B, Sections 11B-210 and 11B-504, as applicable.

    1011.1 General. Stairways serving occupied portions of a building shall comply with the requirements of Sections 1011.2 through 1011.13. Alternating tread devices shall comply with Section 1011.14. Ship’s ladders shall comply with Section 1011.15. Ladders shall comply with Section 1011.16.

    Exception: Within rooms or spaces used for assembly purposes, stepped aisles shall comply with Section 1030.

    1011.2 Width and capacity. The required capacity of stairways shall be determined as specified in Section 1005.1, but the minimum width shall be not less than 44 inches (1118 mm). The minimum width for stairways that serve as part of the accessible means of egress shall comply with Section 1009.3.

    Exceptions:

    1. Stairways serving an occupant load of less than 50 shall have a width of not less than 36 inches (914 mm).
    2. Spiral stairways as provided for in Section 1011.10.
    3. Where an incline platform lift or stairway chairlift is installed on stairways serving occupancies in Group R-3, or within dwelling units in occupancies in Group R-2, a clear passage width not less than 20 inches (508 mm) shall be provided. Where the seat and platform can be folded when not in use, the distance shall be measured from the folded position.

Frequently asked questions

When exactly is a stairway to the roof required?

A stairway to the roof is required for new buildings four or more stories above grade plane unless the roof slope is greater than 4:12 (≈33.3%); see § 504.3.

Can I put antennas and guy wires on a commercial roof?

Yes, but only under strict exceptions: roofs with slope < 30° may have guy wires/masts if there is 7 ft clearance above the roof, and guy wire lateral attachments must be within one‑sixth the mast height — otherwise the general prohibition in § 504.4 applies. Also consider the § 316.4 encasement exception (white 2‑inch pipe).

Is any rooftop fencing allowed for security?

Rooftop security barriers such as barbed wire, razor wire or chain‑link that obstruct or render egress or access hazardous are prohibited on commercial roofs under § 504.4. If you believe a measure is necessary, coordinate with the fire code official and document that it does not impede emergency access.

What signage is required for a roof stair?

§ 504.3 requires the stairway that continues to the roof to be marked at street and floor levels indicating the stair continues to the roof; consult CBC signage detail sections for format and size.

If my rooftop element has less than 7 ft clearance, is there any way to comply?

Potentially — § 316.4 allows encasing suspended wires/cables/ropes/antennas in white, 2‑inch minimum diameter plastic pipe (or approved equivalent) as an exception. Otherwise the element must meet the 7‑ft clearance or not be installed in a way that makes access/egress hazardous.

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