Projections, balconies, bay windows and concealed spaces by construction type

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

• CBC § 705.2.1 High relevance — show source text

  705.2.1 Types I and II construction. Projections from walls of Type I or II construction shall be of noncombustible materials or combustible materials as allowed by Sections 705.2.3.1 and 705.2.4.

  705.2.2 Type III, IV or V construction. Projections from walls of Type III, IV or V construction shall be of any approved material.

  705.2.3 Projection protection. Projections extending to 5 feet (1524 mm) or less from the line used to determine the fire separation distance shall be one of the following:

  1. Noncombustible materials.

  2. Combustible materials of not less than 1-hour fire-resistance-rated construction.

  3. Heavy timber construction complying with Section 2304.11.

  4. Fire-retardant-treated wood.

  5. As permitted by Section 705.2.3.1.

  Exception: Type VB construction shall be allowed for combustible projections in Group R-3 and U occupancies with a fire separation distance greater than or equal to 5 feet (1524 mm).

  7-6 2025 CALIFORNIA BUILDING CODE

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

  FIRE AND SMOKE PROTECTION FEATURES

  705.2.3.1 Balconies and similar projections. Balconies and similar projections of combustible construction other than fireretardant-treated wood shall be fire-resistance rated where required by Table 601 for floor construction or shall be of heavy timber construction in accordance with Section 2304.11. The aggregate length of the projections shall not exceed 50 percent of the building’s perimeter on each floor.

  Exceptions:

  1. On buildings of Types I and II construction, three stories or less above grade plane, fire-retardant-treated wood shall be permitted for balconies, porches, decks and exterior stairways not used as required exits.

  2. Untreated wood and plastic composites that comply with ASTM D7032 and Section 2612 are permitted for pickets, rails and similar guard components that are limited to 42 inches (1067 mm) in height.

  3. Balconies and similar projections on buildings of Types III, IV-HT and V construction shall be permitted to be of Type V construction and shall not be required to have a fire-resistance rating where sprinkler protection is extended to these areas.

  4. Where sprinkler protection is extended to the balcony areas, the aggregate length of the balcony on each floor shall not be limited.

  705.2.3.2 Vents. [SFM] Vents required by Section 2304.12.2.5 in fire-rated exterior balconies or elevated walkway surfaces shall be designed where the voids created at the intersection of the exterior curtain wall and the balcony floor are sealed with an approved material or system to retard the interior spread of flame, hot gases and products of combustion. Rated assemblies shall comply with Section 715. Ventilation openings shall comply with the fire sprinkler protection as required by Section 903.3.1.1 or 903.3.1.2 and the reference standard.

  705.2.4 Bay and oriel windows. Bay and oriel windows constructed of combustible materials shall conform to the type of construction required for the building to which they are attached.

  Exception: Fire-retardant-treated wood shall be permitted on buildings three stories or less above grade plane of Type I, II, III or IV construction.

• CBC § 705.1 High relevance — show source text

  SECTION 705—EXTERIOR WALLS

  705.1 General. Exterior walls shall comply with this section.

  705.2 Projections. Cornices, eave overhangs, exterior balconies and similar projections extending beyond the exterior wall shall conform to the requirements of this section and Section 1405. Exterior egress balconies and exterior exit stairways and ramps shall comply with Sections 1021 and 1027, respectively. Projections shall not extend any closer to the line used to determine the fire separation distance than shown in Table 705.2.

  Exception: Buildings on the same lot and considered as portions of one building in accordance with Section 705.3 are not required to comply with this section for projections between the buildings.

  TABLE 705.2—MINIMUM DISTANCE OF PROJECTION	Col2
  FIRE SEPARATION DISTANCE (FSD) (feet)	MINIMUM DISTANCE FROM LINE USED TO DETERMINE FSD
  0 to less than 2	Projections not permitted
  2 to less than 3	24 inches
  3 to less than 5	Two-thirds of FSD
  5 or greater	40 inches
  For SI: 1 foot = 304.8 mm; 1 inch = 25.4 mm.	For SI: 1 foot = 304.8 mm; 1 inch = 25.4 mm.

  705.2.1 Types I and II construction. Projections from walls of Type I or II construction shall be of noncombustible materials or combustible materials as allowed by Sections 705.2.3.1 and 705.2.4.

  705.2.2 Type III, IV or V construction. Projections from walls of Type III, IV or V construction shall be of any approved material.

  705.2.3 Projection protection. Projections extending to 5 feet (1524 mm) or less from the line used to determine the fire separation distance shall be one of the following:

  1. Noncombustible materials.

  2. Combustible materials of not less than 1-hour fire-resistance-rated construction.

  3. Heavy timber construction complying with Section 2304.11.

  4. Fire-retardant-treated wood.

  5. As permitted by Section 705.2.3.1.

  Exception: Type VB construction shall be allowed for combustible projections in Group R-3 and U occupancies with a fire separation distance greater than or equal to 5 feet (1524 mm).

  7-6 2025 CALIFORNIA BUILDING CODE

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

  FIRE AND SMOKE PROTECTION FEATURES

  705.2.3.1 Balconies and similar projections. Balconies and similar projections of combustible construction other than fireretardant-treated wood shall be fire-resistance rated where required by Table 601 for floor construction or shall be of heavy timber construction in accordance with Section 2304.11. The aggregate length of the projections shall not exceed 50 percent of the building’s perimeter on each floor.

• CBC § 6.4.3.1.1 High relevance — show source text

  Revise Section 6.4.3.1.1 as follows:*

  6.4.3.1.1* Pipe joints shall not be located under foundation footings. The pipe under the building or building foundation shall not contain mechanical joints.

  Exceptions:

  2. Where allowed in accordance with Section 6.4.3.1.

  3. Alternate designs may be utilized where designed by a registered professional engineer and approved by the enforcing

  agency.

  Revise Section 9.2.1.16 as follows:

  9.2.1.16 Exterior columns under 10 ft [2] (0.93m [2] ) in total area, formed by studs or wood joist, with no sources of ignition within the column, supporting exterior canopies that are fully protected with a sprinkler system, shall not require sprinkler protection.

  Revise Section 9.2.3.1 as follows:*

  9.2.3.1* Sprinklers shall be permitted to be omitted where the exterior canopies, roofs, portecocheres, balconies, decks or similar projections are constructed with materials that are noncombustible, limited-combustible or fire retardant treated wood as defined in NFPA 703, Standard for Fire Retardant–Treated Wood and Fire-Retardant Coatings for Building Materials.

  35-28 2025 CALIFORNIA BUILDING CODE

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

  REFERENCED STANDARDS

  Delete Section A.9.2.3.1 of Annex

  Revise Section 9.2.3.2

  9.2.3.2 Sprinklers shall be permitted to be omitted from below the canopies, roofs, balconies, decks or similar projections are combustible construction, provided the exposed finish material on the roof, or canopy is noncombustible, limited-combustible or fire retardant treated wood as defined in NFPA 703, Standard for Fire Retardant–Treated Wood and Fire-Retardant Coatings for Building Materials, and the roofs or canopies contains only sprinklered concealed spaces or any of the following unsprinklered combustible concealed spaces:

  (1) Combustible concealed spaces filled entirely with noncombustible insulation. (2) Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings are directly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft [3] (4.5 m [3] ) or less in volume, including space below insulation that is laid directly on top or within the ceiling joists in an otherwise sprinklered attic [See 11.2.3.1.5.2(9) ]. (3) Concealed spaces over isolated small roofs or canopies not exceeding 55 ft [2] (5.1 m [2] ).

  Delete language to section 9.2.3.3 and reserve section number. 9.2.3.3 Reserved.

  Revise Section 9.3.19.1 as follows:*

• CBC § 9.2.3.1 High relevance — show source text

  REFERENCED STANDARDS

  Delete Section A.9.2.3.1 of Annex

  Revise Section 9.2.3.2

  9.2.3.2 Sprinklers shall be permitted to be omitted from below the canopies, roofs, balconies, decks or similar projections are combustible construction, provided the exposed finish material on the roof, or canopy is noncombustible, limited-combustible or fire retardant treated wood as defined in NFPA 703, Standard for Fire Retardant–Treated Wood and Fire-Retardant Coatings for Building Materials, and the roofs or canopies contains only sprinklered concealed spaces or any of the following unsprinklered combustible concealed spaces:

  (1) Combustible concealed spaces filled entirely with noncombustible insulation. (2) Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings are directly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft [3] (4.5 m [3] ) or less in volume, including space below insulation that is laid directly on top or within the ceiling joists in an otherwise sprinklered attic [See 11.2.3.1.5.2(9) ]. (3) Concealed spaces over isolated small roofs or canopies not exceeding 55 ft [2] (5.1 m [2] ).

  Delete language to section 9.2.3.3 and reserve section number. 9.2.3.3 Reserved.

  Revise Section 9.3.19.1 as follows:*

  9.3.19.1* Unless the requirements of 9.2.3.1 or 9.2.3.2 are met, sprinklers shall be installed under exterior roofs, canopies, porte-cochere, balconies, decks or similar projections exceeding 4 ft (1.2 m) in width.

  Revise Annex Section A9.3.19.2 as follows:

  A9.3.19.2 The presence of planters, newspaper machines and similar items, should not be considered storage.

  Add Section 9.3.19.3 as follows:

  9.3.19.3 Sprinklers may be omitted for following structures:

  (1) Solar photovoltaic panel structures with no use underneath. Signs may be provided, as determined by the enforcing agency prohibiting any use underneath including storage. (2) Solar photovoltaic (PV) panels supported by framing that have sufficient uniformly distributed and unobstructed openings throughout the top of the array (horizontal plane) to allow heat and gases to escape, as determined by the enforcing agency.

  Add new Sections 16.9.3.1.3.4 and 16.9.3.1.3.5 as follows:

• CBC § 806.6. Medium relevance — show source text

  4. Roof coverings that have an A, B or C classification.

  5. Interior floor finish and floor covering materials installed in accordance with Section 804.

  6. Millwork such as doors, door frames, window sashes and frames.

  7. Interior wall and ceiling finishes installed in accordance with Section 803.

  8. Trim installed in accordance with Section 806.6.

  9. Where not installed greater than 15 feet (4572 mm) above grade, show windows, nailing or furring strips and wooden bulkheads below show windows, including their frames, aprons and show cases.

  10. Finish flooring installed in accordance with Section 805.

  11. Partitions dividing portions of stores, offices or similar places occupied by one tenant only and that do not establish a corridor serving an occupant load of 30 or more shall be permitted to be constructed of fire-retardant-treated wood complying with Section 2303.2, 1-hour fire-resistance-rated construction or of wood panels or similar light construction up to 6 feet (1829 mm) in height.

  12. Stages and platforms constructed in accordance with Sections 410.2 and 410.3, respectively.

  13. Combustible exterior wall coverings, balconies and similar projections and bay or oriel windows in accordance with Chapter 14 and Section 705.2.3.1.

  14. Blocking such as for handrails, millwork, cabinets and window and door frames.

  15. Light-transmitting plastics as permitted by Chapter 26.

  16. Mastics and caulking materials applied to provide flexible seals between components of exterior wall construction.

  17. Exterior plastic veneer installed in accordance with Section 2605.2.

  18. Nailing or furring strips as permitted by Section 803.15.

  19. Heavy timber as permitted by Note c to Table 601 and Sections 602.4.4.4 and 705.2.3.1.

  20. Aggregates, component materials and admixtures as permitted by Section 703.2.1.2.

  21. Sprayed fire-resistive materials and intumescent fire-resistive materials, determined on the basis of fire resistance tests in accordance with Section 703.2 and installed in accordance with Sections 1705.15 and 1705.16, respectively.

  2025 CALIFORNIA BUILDING CODE 6-7

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

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  TYPES OF CONSTRUCTION

  22. Materials used to protect penetrations in fire-resistance-rated assemblies in accordance with Section 714.
  23. Materials used to protect joints in fire-resistance-rated assemblies in accordance with Section 715.
  24. Materials allowed in the concealed spaces of buildings of Types I and II construction in accordance with Section 718.5.
  25. Materials exposed within plenums complying with the California Mechanical Code .
  26. Wall construction of freezers and coolers of less than 1,000 square feet (92.9 m [2] ), in size, lined on both sides with noncombustible materials and the building is protected throughout with an automatic sprinkler system in accordance with Section 903.3.1.1.
  27. Wood nailers for parapet flashing and roof cants.
  28. Vapor retarders as required by Section 1404.3.

  603.1.1 Ducts. The use of nonmetallic ducts shall be permitted where installed in accordance with the limitations of the California Mechanical Code .

• CBC § 403.6.1 Medium relevance — show source text

  Fire Service Access Elevators 403.6.1, 3007 Fire Walls 706 Aircraft hangar 412.3.6.2 Combustible framing 706.7 Continuity 706.5, 706.6 Exterior walls Table 705.5, 706.5.1 Fire-resistance rating 703, 706.4 Glazing, rated 716.3.4 Inspection 110.3.8 Joints 706.10, 715 Materials 706.3

  Opening protection 706.8, 706.11, 714.4, 716, 717.5.1 Penetration 706.9, 714.4 Special provisions Covered and open mall buildings 402.4.2.2

  Group H-5 415.11.1.6 Structural stability 706.2 Fire Windows (see Opening Protectives) Fireblocking 718.2 Chimneys 718.2.5.1, 2113.20 Fireplaces 2111.13 Wood construction 718.2.1, 718.2.7,

  1405.1.3 Wood stairways 718.2.4 Fireplaces, Factory-Built 2111.14.1 Fireplaces, Masonry 202 Clearance to combustibles 2111.12

  Drawings 2111.2 General provisions 2111 Hearth extension 2111.10, 2111.11 Steel units 2111.6.1

  Fire-Resistant Construction 701.1

  Fire-Retardant-Treated Wood 2303.2

  Awnings 3105.2 Balconies 705.2.3.1

  Canopies 3105.3 Concealed spaces 718.5 Fastening 2304.10.6 Fire wall vertical continuity 706.6 Partitions 603.1

  Platforms 410.3

  Projections 705.2.3 Roof construction Table 601, 705.12, 706.6, 1505 Shakes and shingles 1505.6 Type I and II construction 603.1 Type III construction 602.3 Type IV construction 602.4 Veneer 1404.6 Firestop 714, 1705.18.1 Fireworks 307.2, 307.3, 307.5 Flamespread 803.1.2, Table 803.13 Flammable Finishes 307.1, 416 Flammable Liquids 307.4, 307.5, 406.8.2, 412, 414, 415 Flammable Solids 307.5, 415 Flashing Roof 1503.2, 1507.2.8, 1507.3.9, 1507.5.7, 1507.7.7, 1507.8.8, 1507.9.9, 1512.5 Wall, veneer 1404.4, 1404.13.7 Flood Hazard Areas Appendix G, 1612.3 Coastal A zone 1402.10, 1603.1.7, 1612.2, 1612.4 Coastal high hazard area 1402.10, 1603.1.7, 1612.2,

• CBC § 9.2.3.2 Medium relevance — show source text

  Revise Section 9.2.3.2

  9.2.3.2 Sprinklers shall be permitted to be omitted from below the canopies, roofs, balconies, decks or similar projections are combustible construction, provided the exposed finish material on the roof or canopy is noncombustible, limited-combustible or fire retardant treated wood as defined in NFPA 703, Standard for Fire Retardant–Treated Wood and Fire-Retardant Coatings for Building Materials, and the roofs or canopies contains only sprinklered concealed spaces or any of the following unsprinklered combustible concealed spaces:

  (1) Combustible concealed spaces filled entirely with noncombustible insulation.

  (2) Light or ordinary hazard occupancies where noncombustible or limited-combustible ceilings are directly attached to the bottom of solid wood joists so as to create enclosed joist spaces 160 ft [3] (4.5 m [3] ) or less in volume, including space below insulation that is laid directly on top or within the ceiling joists in an otherwise sprinklered attic [See 11.2.3.1.5.2(9)]. (3) Concealed spaces over isolated small roofs or canopies not exceeding 55 ft [2] (5.1 m [2] ).

  80-12 2025 CALIFORNIA FIRE CODE

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

  REFERENCED STANDARDS

  Delete language to section 9.2.3.3 and reserve section number. 9.2.3.3 Reserved.

  Revise Section 9.3.19.1 as follows:*

  9.3.19.1* Unless the requirements of 9.2.3.1 or 9.2.3.2 are met, sprinklers shall be installed under exterior roofs, canopies, porte-cochere, balconies, decks or similar projections exceeding 4 ft (1.2 m) in width.

  Revise Annex Section A9.3.19.2 as follows:

  A9.3.19.2 The presence of planters, newspaper machines and similar items, should not be considered storage.

  Add Section 9.3.19.3 as follows:

  9.3.19.3 Sprinklers may be omitted for following structures:

  (1) Solar photovoltaic panel structures with no use underneath. Signs may be provided, as determined by the enforcing agency prohibiting any use underneath including storage.

  (2) Solar photovoltaic (PV) panels supported by framing that have sufficient uniformly distributed and unobstructed openings throughout the top of the array (horizontal plane) to allow heat and gases to escape, as determined by the enforcing agency.

  Add new Sections 16.9.3.1.3.4 and 16.9.3.1.3.5 as follows:

• CBC § 2205.1 Medium relevance — show source text

  Cold-Formed Steel 2204

  Cold-formed Stainless Steel 2205.1 Cutting and notching 2206.3 Light-frame construction 2206 Special inspection 1705.12.2, 1705.13.3, 1705.2.3, 1705.2.7 Combustible Dusts 307.4, 414.5.1, 426.1 Combustible Liquids 307.1, 307.4, 307.5, 414.2.5, 414.5.3, 415.9.2, 415.10.1, 418.6

  Combustible Material

  Concealed spaces 413.2, 718.5 Exterior side of exterior wall 1405 High-pile stock or rack storage 413.1, 910.2.2 Type I and Type II 603, 805 Combustible Projections 705.2, 705.2.3.1 Combustible Storage 413, 910.2.2 Common Path of Egress Travel 1006.2.1 Compartmentation Ambulatory care facilities 422.2, 422.3 Group I-2 407.5, 407.6 Group I-3 408.6 Laboratory suites 428.3 Underground buildings 405.4, 405.5.2 Compressed Gas 307.2, 415.11.8 Concealed Spaces 413.2, 718 Concrete Chapters 19 and 19A Anchorage 1901.3 Calculated fire resistance 722.2

  Cellular 721.2

  Construction documents 1603.1,

  1901.5 Durability 1904 Footings 1809, 1906 Foundation walls 1807.1.5, 1808.8 Materials 1705.3.2, 1901, 1903 Plain, structural 1906 Reinforced gypsum concrete 2514 Rodentproofing Appendix F Roof tile 1504.3, 1507.3, 1513 Shotcrete 1908 Slabs-on-ground 1907 Special inspections 1705.3, Table 1705.3 Specifications 1903 Strength testing 1705.3.2 Structural concrete with GFRP

  reinforcement 1901.2.1 Wood support 2304.13 Concrete Masonry Calculated fire resistance 722.3

  Construction 2104

  Design 2101.2, 2108, 2109 Materials 2103.1 Surface bonding 2103.2.2, 2109.2 Wood support 2304.13 Concrete Roof Tile 1504.3, 1507.3, 1513 Wind Resistance 1504.3, 1609.6.3.1 Condominium (see Apartment Houses) Conduit, Penetration Protection 713.3,

  1023.5 Conflicts in Code 102, 104.2.4.1 Congregate Living Facilities 310.2, 310.3, 310.4

  Construction (See Safeguards During Construction) Construction Documents 107, 1603 Alarms and detection 907.1.1

  Balconies 107.2.5

• CBC § 705.2.3.2 Medium relevance — show source text

  Exceptions:

  1. On buildings of Types I and II construction, three stories or less above grade plane, fire-retardant-treated wood shall be permitted for balconies, porches, decks and exterior stairways not used as required exits.

  2. Untreated wood and plastic composites that comply with ASTM D7032 and Section 2612 are permitted for pickets, rails and similar guard components that are limited to 42 inches (1067 mm) in height.

  3. Balconies and similar projections on buildings of Types III, IV-HT and V construction shall be permitted to be of Type V construction and shall not be required to have a fire-resistance rating where sprinkler protection is extended to these areas.

  4. Where sprinkler protection is extended to the balcony areas, the aggregate length of the balcony on each floor shall not be limited.

  705.2.3.2 Vents. [SFM] Vents required by Section 2304.12.2.5 in fire-rated exterior balconies or elevated walkway surfaces shall be designed where the voids created at the intersection of the exterior curtain wall and the balcony floor are sealed with an approved material or system to retard the interior spread of flame, hot gases and products of combustion. Rated assemblies shall comply with Section 715. Ventilation openings shall comply with the fire sprinkler protection as required by Section 903.3.1.1 or 903.3.1.2 and the reference standard.

  705.2.4 Bay and oriel windows. Bay and oriel windows constructed of combustible materials shall conform to the type of construction required for the building to which they are attached.

  Exception: Fire-retardant-treated wood shall be permitted on buildings three stories or less above grade plane of Type I, II, III or IV construction.

  705.3 Buildings on the same lot. For the purposes of determining the required wall and opening protection, projections and roofcovering requirements, buildings on the same lot shall be assumed to have an imaginary line between them.

  Where a new building is to be erected on the same lot as an existing building, the location of the assumed imaginary line with relation to the existing building shall be such that the exterior wall and opening protection of the existing building meet the criteria as set forth in Sections 705.5 and 705.9.

  Exceptions:

  1. Two or more buildings on the same lot shall be either regulated as separate buildings or shall be considered as portions of one building if the aggregate area of such buildings is within the limits specified in Chapter 5 for a single building. Where the buildings contain different occupancy groups or are of different types of construction, the area shall be that allowed for the most restrictive occupancy or construction.
  2. Where an S-2 parking garage of Construction Type I or IIA is erected on the same lot as a Group R-2 building, and there is no fire separation distance between these buildings, then the adjoining exterior walls between the buildings are permitted to have occupant use openings in accordance with Section 706.8. However, opening protectives in such openings shall only be required in the exterior wall of the S-2 parking garage, not in the exterior wall openings in the R-2 building, and these opening protectives in the exterior wall of the S-2 parking garage shall be not less than 1 [1] / 2 -hour fire protection rating.

  705.4 Materials. Exterior walls shall be of materials permitted by the building’s type of construction.

• CBC § 14-16 Medium relevance — show source text

  14-16 2025 CALIFORNIA BUILDING CODE

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

  EXTERIOR WALLS

  TABLE 1405.1.1.1.2—MINIMUM FIRE SEPARATION FOR COMBUSTIBLE EXTERIOR WALL COVERINGS	Col2
  FIRE SEPARATION DISTANCE (feet)	TOLERABLE LEVEL INCIDENT RADIANT HEAT ENERGY (kW/m2)
  5	12.5
  6	11.8
  7	11.0
  8	10.3
  9	9.6
  10	8.9
  11	8.3
  12	7.7
  13	7.2
  14	6.7
  15	6.3
  16	5.9
  17	5.5
  18	5.2
  19	4.9
  20	4.6
  21	4.4
  22	4.1
  23	3.9
  24	3.7
  25	3.5
  For SI: 1 foot = 304.8 mm, 1 Btu/H2 × °F = 0.0057 kW/m2 × K.	For SI: 1 foot = 304.8 mm, 1 Btu/H2 × °F = 0.0057 kW/m2 × K.

  1405.1.2 Location. Combustible exterior wall coverings located along the top of exterior walls shall be completely backed up by the exterior wall and shall not extend over or above the top of the exterior wall.

  1405.1.3 Fireblocking. Where the combustible exterior wall covering is furred out from the exterior wall and forms a solid surface, the distance between the back of the exterior wall covering and the exterior wall shall not exceed 1 [5] / 8 inches (41 mm). The concealed space thereby created shall be fireblocked in accordance with Section 718. Exception: The distance between the back of the exterior wall covering and the exterior wall shall be permitted to exceed 1 [5] / 8 inches (41 mm) where the concealed space is not required to be fireblocked by Section 718.

  SECTION 1406—METAL COMPOSITE MATERIAL (MCM)

  1406.1 General. The provisions of this section shall govern the materials, construction and quality of metal composite material (MCM) for use as exterior wall coverings in addition to other applicable requirements of Chapters 14 and 16.

  1406.2 Exterior wall covering. MCM used as exterior wall covering or as elements of balconies and similar projections and bay and oriel windows to provide cladding or weather resistance shall comply with Sections 1406.4 through 1406.13.

  1406.3 Architectural trim and embellishments. MCM used as architectural trim or embellishments shall comply with Sections 1406.7 through 1406.13.

  [BS] 1406.4 Structural design. MCM systems shall be designed and constructed to resist wind loads as required by Chapter 16 for components and cladding.

  1406.5 Approval. Results of approved tests or an engineering analysis shall be submitted to the building official to verify compliance with the requirements of Chapter 16 for wind loads.

• CBC § 603.1.1 Medium relevance — show source text

  ** Combustible materials shall be permitted in buildings of Type I or II construction in the following applications and in accordance with Sections 603.1.1 through 603.1.3:

  1. Fire-retardant-treated wood complying with Section 2303.2 shall be permitted in: 1.1. Nonbearing partitions where the required fire-resistance rating is 2 hours or less except in shaft enclosures within Group I-2 occupancies and ambulatory care facilities. 1.2. Nonbearing exterior walls where fire-resistance-rated construction is not required. 1.3. Roof construction, including girders, trusses, framing and decking. Exceptions:

  2. In buildings of Type IA construction exceeding two stories above grade plane, fire-retardant-treated wood is not permitted in roof construction where the vertical distance from the upper floor to the roof is less than 20 feet (6096 mm).

  3. Group I-2, roof construction containing fire-retardant-treated wood shall be covered by not less than a Class A roof covering or roof assembly, and the roof assembly shall have a fire-resistance rating where required by the construction type. 1.4. Balconies, porches, decks and exterior stairways not used as required exits on buildings three stories or less above grade plane.

  4. Thermal and acoustical insulation, other than foam plastics, having a flame spread index of not more than 25. Exceptions:

  5. Insulation placed between two layers of noncombustible materials without an intervening airspace shall be allowed to have a flame spread index of not more than 100.

  6. Insulation installed between a finished floor and solid decking without intervening airspace shall be allowed to have a flame spread index of not more than 200.

  7. Foam plastics in accordance with Chapter 26.

  8. Roof coverings that have an A, B or C classification.

  9. Interior floor finish and floor covering materials installed in accordance with Section 804.

  10. Millwork such as doors, door frames, window sashes and frames.

  11. Interior wall and ceiling finishes installed in accordance with Section 803.

  12. Trim installed in accordance with Section 806.6.

  13. Where not installed greater than 15 feet (4572 mm) above grade, show windows, nailing or furring strips and wooden bulkheads below show windows, including their frames, aprons and show cases.

  14. Finish flooring installed in accordance with Section 805.

  15. Partitions dividing portions of stores, offices or similar places occupied by one tenant only and that do not establish a corridor serving an occupant load of 30 or more shall be permitted to be constructed of fire-retardant-treated wood complying with Section 2303.2, 1-hour fire-resistance-rated construction or of wood panels or similar light construction up to 6 feet (1829 mm) in height.

  16. Stages and platforms constructed in accordance with Sections 410.2 and 410.3, respectively.

  17. Combustible exterior wall coverings, balconies and similar projections and bay or oriel windows in accordance with Chapter 14 and Section 705.2.3.1.

  18. Blocking such as for handrails, millwork, cabinets and window and door frames.

  19. Light-transmitting plastics as permitted by Chapter 26.

  20. Mastics and caulking materials applied to provide flexible seals between components of exterior wall construction.

  21. Exterior plastic veneer installed in accordance with Section 2605.2.

  22. Nailing or furring strips as permitted by Section 803.15.
• CBC § 1406.10.3 Medium relevance — show source text

  2. The MCM is used as elements of balconies and similar projections, architectural trim or embellishments.

  1406.10.3 Full-scale tests. The MCM system shall be tested in accordance with, and comply with, the acceptance criteria of NFPA 285. Such testing shall be performed on the MCM system with the MCM in the maximum thickness intended for use.

  1406.11 Type V construction. MCM shall be permitted to be installed on buildings of Type V construction.

  1406.12 Foam plastic insulation. Where MCM systems are included in an exterior wall assembly containing foam plastic insulation, the exterior wall assembly shall also comply with the requirements of Section 2603.

  1406.13 Labeling. MCM shall be labeled in accordance with Section 1703.5.

  SECTION 1407—EXTERIOR INSULATION AND FINISH SYSTEMS (EIFS)

  1407.1 General. The provisions of this section shall govern the materials, construction and quality of exterior insulation and finish systems (EIFS) for use as exterior wall coverings in addition to other applicable requirements of Chapters 7, 14, 16, 17 and 26.

  1407.2 Performance characteristics. EIFS shall be constructed such that it meets the performance characteristics required in ASTM E2568.

  [BS] 1407.3 Structural design. The underlying structural framing and substrate shall be designed and constructed to resist loads as required by Chapter 16.

  1407.4 Weather resistance. EIFS shall comply with Section 1402 and shall be designed and constructed to resist wind and rain in accordance with this section and the manufacturer’s application instructions.

  1407.4.1 EIFS with drainage. EIFS with drainage shall have an average minimum drainage efficiency of 90 percent when tested in accordance the requirements of ASTM E2273 and is required on framed walls of Type V construction, Group R1, R2, R3 and R4 occupancies.

  1407.4.1.1 Water-resistive barrier. For EIFS with drainage, the water-resistive barrier shall comply with Section 1403.2 or ASTM E2570.

  1407.5 Exterior walls of buildings of any height. Exterior wall assemblies containing an EIFS exterior wall covering shall comply with Section 2603.5.

  1407.6 Installation. Installation of the EIFS and EIFS with drainage shall be in accordance with the EIFS manufacturer’s instructions.

  1407.7 Special inspections. EIFS installations shall comply with the provisions of Sections 1704.2 and 1705.17.

  SECTION 1408—HIGH-PRESSURE DECORATIVE EXTERIOR-GRADE COMPACT LAMINATES (HPL)

  1408.1 General. The provisions of this section shall govern the materials, construction and quality of High-Pressure Decorative ExteriorGrade Compact Laminates (HPL) for use as exterior wall coverings in addition to other applicable requirements of Chapters 14 and 16.

  1408.2 Exterior wall covering. HPL used as exterior wall covering or as elements of balconies and similar projections and bay and oriel windows to provide cladding or weather resistance shall comply with Sections 1408.4 through 1408.14.

  1408.3 Architectural trim and embellishments. HPL used as architectural trim or embellishments shall comply with Sections 1408.7 through 1408.14.