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Every 2024 IRC section and the IBC as it loads, by number or topic, plus the local rules for your city. Free to search.

Detached houses, duplexes and townhouses up to 3 stories with their own exits use the IRC; every other building uses the IBC (IBC 101.2).

47 sections matching “IBC 705” for San Antonio, TX, the 2024 IRC

  • IBC 705.5

    Fire-resistance ratings

    • Exterior walls are rated per Table 601 and Table 705.5; walls with FSD over 10 ft are rated from inside only, 10 ft or less from both sides.
    • Groups A, B, E, F-2, I, R, S-2, U: under 5 ft 1 hour; 5–10 ft 1 hour; 10–30 ft 1 hour (0 for IIB and VB); 30 ft or more 0. F-1, M, S-1: 2 / 1–2 / 0–1 / 0. H: 3 / 2–3 / 1–2 / 0. R-3 of IIB/VB and private garages need no rating at FSD 5 ft or more.

    Works withIBC 601IBC Table 705.5IRC R302.1

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.6

    Continuity

    • Exterior wall ratings run from foundation or floor to the deck above, or to a rated ceiling where FSD exceeds 10 ft; parapets per 705.12.

    Works withIBC 705.12

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.7

    Structural stability

    • Interior members bracing an exterior wall take their Table 601 rating; those in or outside the wall plane take the wall's rating too.

    Works withIBC 601IBC 705.5

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.8

    Unexposed surface temperature

    • Temperature-rise limits don't apply to exterior walls, but where openings are limited, hot wall area counts as equivalent opening (Ae = A + Af × Feo).

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.9

    Openings

    • Exterior wall openings follow 705.9.1 to 705.9.6 and Table 705.9.
    • Percent of wall per story (unprotected unsprinklered / unprotected sprinklered or protected): under 3 ft not allowed; 3–5 ft none/15%; 5–10 ft 10/25%; 10–15 ft 15/45%; 15–20 ft 25/75%; 20–25 ft 45%/unlimited; 25–30 ft 70%/unlimited; 30 ft or more unlimited. R-3 is unlimited at 5 ft or more.

    Works withIBC Table 705.9

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.11

    Ducts and air transfer openings

    • Ducts in rated exterior walls needing protected openings follow 717; foundation vents allowed.

    Works withIBC 717

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.12

    Parapets

    • Exterior walls need parapets, except unrated walls, buildings 1,000 sq ft or less per floor, 2-hour or noncombustible roofs, 1-hour walls to the deck with rated roof edges, R-2/R-3 with Class C roofs and 4-ft protected decks, and walls allowed 25% unprotected openings.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.2.1

    Types I and II construction

    • Projections from Type I/II walls are noncombustible except as 705.2.3.1 and 705.2.4 allow.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.2.2

    Type III, IV or V construction

    • Projections from Type III–V walls may be any approved material.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.2.3

    Projection protection

    • Projections within 5 ft of the FSD line are noncombustible, 1-hour, heavy timber or FRT wood; Type VB allowed for R-3 and U at FSD 5 ft or more.

    Works withIBC 2304.11

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.2.4

    Bay and oriel windows

    • Combustible bay windows match the building's construction type; FRT wood OK up to 3 stories in Types I–IV.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.7.1

    Floor assemblies in Type III construction

    • In Type III, floor parts supporting an exterior wall are rated like the wall; rim joists in the wall plane follow interior Type III rules.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.9.1

    Allowable area of openings

    • Openings per story may not exceed Table 705.9; first stories facing a street over 15 ft or 30-ft open space, and unrated buildings, may have unlimited openings.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.9.3

    Unprotected openings

    • Unprotected windows and doors may be any approved material; glazing per Chapters 24 and 26.

    Works withIBC Chapter 24IBC Chapter 26

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.9.4

    Mixed openings

    • With both kinds: (protected ÷ allowed protected) + (unprotected ÷ allowed unprotected) ≤ 1.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.9.5

    Vertical separation of openings

    • Openings within 5 ft horizontally in adjacent stories need 3 ft vertical separation or a 30-in flame barrier, both 1-hour; buildings up to 3 stories, sprinklered buildings and open garages excepted.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.9.6

    Vertical exposure

    • Openings less than 15 ft above an adjacent roof on the same lot need ¾-hour protection unless that roof is 1-hour for 10 ft.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.12.1

    Parapet construction

    • Parapets match the wall rating, are at least 30 in high with noncombustible top 18 in.

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 705.2.3.1

    Balconies and similar projections

    • Combustible balconies are rated like floors or heavy timber and total no more than 50% of the perimeter per floor, unless sprinklered.

    Works withIBC 601IBC 2612

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 704.9

    Exterior structural members

    • Exterior load-bearing members take the highest of Table 601 for the element, Table 601 for exterior bearing walls, and Table 705.5.

    Works withIBC 601IBC 705.5

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

  • IBC 1705.3

    Concrete construction

    • Concrete special inspections and tests per Table 1705.3 (rebar placement, welding, anchors, mix, sampling, placement, curing, prestressing, precast). Exempt: small-building spread or wall footings (3 stories or less, f'c ≤ 2,500 psi), slabs on grade, prescriptive foundation walls, patios and driveways.

    Works withIBC Table 1809.7IBC Table 1807.1.6.2IBC 1705.13IBC Table 1705.3

    International Building Code, 2024 · Chapter 17, Special Inspections and TestsRead the full text (opens UpCodes in a new tab)

  • IBC 1705.6

    Soils

    • Soils inspections per Table 1705.6: bearing material, excavation depth, fill testing, continuous inspection of fill placement and compaction. Without a geotech report, fill must reach 90% of ASTM D1557 density.

    Works withIBC 1803IBC Table 1705.6

    International Building Code, 2024 · Chapter 17, Special Inspections and TestsRead the full text (opens UpCodes in a new tab)

  • IBC 1705.13

    Special inspections for seismic resistance

    • Seismic special inspections per 1705.13.1–1705.13.9; exempt light-frame with SDS ≤ 0.5 and height ≤ 35 ft, reinforced masonry/concrete with SDS ≤ 0.5 and ≤ 25 ft, and regular one- and two-family dwellings of two stories or less.

    Works withIBC 1705.13.1IBC 1705.13.9IBC 1704.2IBC 1613.2.4

    International Building Code, 2024 · Chapter 17, Special Inspections and TestsRead the full text (opens UpCodes in a new tab)

  • IBC 712.1.15

    Skylights

    • Skylights through rated roofs may be unprotected if structure is maintained, except where 705.9.6 requires a rated roof.

    Works withIBC 705.9.6

    International Building Code, 2024 · Chapter 7, Fire and Smoke Protection FeaturesRead the full text (opens UpCodes in a new tab)

Searches all 4,276 IRC 2024 sections, 5,532 IBC 2024 sections and defined terms (Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 so far) and each city's local rules as they are added. Section numbers and titles from the International Residential Code and International Building Code, 2024 editions, copyrighted by the International Code Council; the IRC's electrical chapters (34 to 43) follow NFPA 70, the National Electrical Code. Requirements are summarized in our words (IRC Chapters 3 to 43, IBC Chapters 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33); read the full text at the link on each result. Local values come from each city's published documents.

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