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HAZARDOUS LOCATIONS
<br />SECTION 2406 SAFETY GLAZING
<br />2406.1 Human impact loads.
<br />- Individual glazed areas, including glass mirrors, in hazardous locations as defined in
<br />Section 2406.4 shall comply with Sections 2406.1.1 through 2406.1.4.
<br />Exception: Exception: Mirrors and other glass panels mounted or hung on a surface
<br />that provides a continuous backing support.
<br />2406.1.1 impact test.
<br />Except as provided in Sections 2406.1.2 through 2406.1.4, all glazing shall pass the
<br />impact test requirements of Section 2406.2.
<br />2406.1.2 Plastic glazing.
<br />Plastic glazing shall meet the weathering requirements of ANSI Z97.1.
<br />2406.1.3 Glass block.
<br />Glass -block walls shall comply with Section 2101.2.5.
<br />2406.1.4 Louvered windows and jalousles.
<br />Louvered windows and jalousies shall comply with Section 2403.5.
<br />2406.2 Impact test.
<br />Where required by other sections of this code, glazing shall be tested in accordance
<br />with CPSC 16 CFR Part 1201. Glazing shall comply with the test criteria for Category 11,
<br />unless otherwise indicated in Table 2406.2(1).
<br />Exception: Glazing not in doors or enclosures for hot tubs, whirlpools, saunas, steam
<br />rooms, bathtubs and showers shall be permitted to be tested in accordance with ANSI
<br />Z97.1. Glazing shall comply with the test criteria for Class A, unless otherwise indicated
<br />in Table 2406.2(2).
<br />2406.3 Identification of safety glazing.
<br />Except as indicated in Section 2406.3.1, each pane of safety glazing installed in
<br />hazardous locations shall be identified by a manufacturer's designation specifying who
<br />applied the designation, the manufacturer or installer and the safety glazing standard
<br />with which it complies, as well as the information specified in Section 2403.1. The
<br />designation shall be acid etched, sand blasted, ceramic fired, laser etched, embossed
<br />or of a type that once applied, cannot be removed without being destroyed. A label as
<br />defined in Section 202 and meeting the requirements of this section shall be permitted
<br />in lieu of the manufacturer's designation.
<br />Exceptions:
<br />1. For other than tempered glass, manufacturer's designations are not required,
<br />provided the building official approves the use of a certificate, affidavit or other
<br />evidence confirming compliance with this code.
<br />2. Tempered spandrel glass is permitted to be identified by the manufacturer with a
<br />removable paper designation.
<br />2406.3.1 Multi -pane assemblies.
<br />Multi -pane glazed assemblies having individual panes not exceeding 1 square foot
<br />(0.09 m2) in exposed areas shall have at least one pane in the assembly marked as
<br />indicated in Section 2406.3. Other panes in the assembly shall be marked "CPSC 16
<br />CFR Part 1201„ or "ANSI Z97.1," as appropriate.
<br />2406.4 Hazardous locations.
<br />The locations specified in Sections 2406.4.1 through 2406.4.7 shall be considered
<br />specific hazardous locations requiring safety glazing materials.
<br />2406.4.1 Glazing in doors.
<br />Glazing in all fixed and operable panels of swinging, sliding, and bifold doors shall be
<br />considered a hazardous location.
<br />Exceptions:
<br />1. Glazed openings of a size through which a 3- inch -diameter (76 mm) sphere is
<br />unable to pass.
<br />2. Decorative glazing.
<br />3. Glazing materials used as curved glazed panels in revolving doors.
<br />4. Commercial refrigerated cabinet glazed doors.
<br />2406.4.2 Glazing adjacent to doors.
<br />Glazing in an individual fixed or operable panel adjacent to a door where the nearest
<br />vertical edge of the glazing is within a 24-inch (610 mm) arc of either vertical edge of
<br />the door in a closed position and where the bottom exposed edge of the glazing is less
<br />than 60 inches (1524 mm) above the walking surface shall be considered a hazardous
<br />location.
<br />Exceptions:
<br />1. Decorative glazing.
<br />2. Where there is an intervening wall or other permanent barrier between the door and
<br />glazing.
<br />3. Where access through the door is to a closet or storage area 3 feet (914 mm) or less
<br />in depth. Glazing in this application shall comply with Section 2406.4.3.
<br />4. Glazing in walls on the latch side of and perpendicular to the plane of the door in a
<br />closed position in one- and two-family dwellings or within dwelling units in Group R-2.
<br />2406.4.3 Glazing in windows.
<br />Glazing in an individual fixed or operable panel that meets all of the following conditions
<br />shall be considered a hazardous location:
<br />1. The exposed area of an individual pane is greater than 9 square feet (0.84 m2);
<br />2. The bottom edge of the glazing is less than 18 inches (457 mm) above the floor;
<br />3. The top edge of the glazing is greater than 36 inches (914 mm) above the floor; and
<br />4. One or more walking surface(s) are within 36 inches (914 mm), measured
<br />horizontally and in a straight line, of the plane of the glazing.
<br />Exceptions:
<br />1. Decorative glazing.
<br />2. Where a horizontal rail is installed on the accessible sides) of the glazing 34 to 38
<br />inches (864 to 965 mm) above the walking surface. The rail shall be capable of
<br />withstanding a horizontal load of 50 pounds per linear foot (730 N/m) without contacting
<br />the glass and be a minimum of 1 1/2 inches (38 mm) in cross -sectional height.
<br />3. Outboard panes in insulating glass units or multiple glazing where the bottom
<br />exposed edge of the glass is 25 feet (7620 mm) or more above any grade, roof, walking
<br />surface or other horizontal or sloped (within 45 degrees of horizontal) (0.78 rad) surface
<br />adjacent to the glass exterior.
<br />2406.4.4 Glazing in guards and railings.
<br />Glazing in guards and railings, including structural baluster panels and nonstructural in -
<br />fill panels, regardless of area or height above a walking surface shall be considered a
<br />hazardous location.
<br />_2406.4.5 Glazing and wet surfaces. Glazing in walls, enclosures or fences containing
<br />or facing hot tubs, spas, whirlpools, saunas, steam rooms, bathtubs, showers and
<br />indoor or outdoor swimming pools where the bottom exposed edge of the glazing is
<br />less than 60 inches (1524 mm) measured vertically above any standing or walking
<br />surface shall be considered a hazardous location. This shall apply to single glazing and
<br />all panes in multiple glazing.
<br />Exception: Glazing that is more than 60 inches (1524 mm), measured horizontally and
<br />in a straight line, from the water's edge of a bathtub, hot tub, spa, whirlpool, or
<br />swimming pool.
<br />2406.4.6 Glazing adjacent to stairs and ramps.
<br />Glazing where the bottom exposed edge of the glazing is less than 60 inches (1524
<br />mm) above the plane of the adjacent walking surface of stairways, landings between
<br />flights of stairs, and ramps shall be considered a hazardous location.
<br />Exceptions:
<br />1. The side of a stairway, landing or ramp that has a guard complying with the
<br />provisions of Sections 1013 and 1607.8, and the plane of the glass is greater than 18
<br />inches (457 mm) from the railing.
<br />2. Glazing 36 inches (914 mm) or more measured horizontally from the walking
<br />surface.
<br />2406.4.7 Glazing adjacent to the bottom stair landing.
<br />Glazing adjacent to the landing at the bottom of a stairway where the glazing is less
<br />than 36 inches (914 mm) above the landing and within 60 inches (1524 mm)
<br />horizontally of the bottom tread shall be considered a hazardous location.
<br />Exception: Glazing that is protected by a guard complying with Sections 1013 and
<br />1607.8 where the plane of the glass is greater than 18 inches (457 mm) from the guard.
<br />2406.5 Fire department access panels.
<br />Fire department glass access panels shall be of tempered glass. For insulating glass
<br />units, all panes shall be tempered glass.
<br />SECTION 2407 GLASS IN HANDRAILS AND GUARDS
<br />2407.1 Materials.
<br />Glass used as a handrail assembly or a guard section shall be constructed of either
<br />single fully tempered glass, laminated fully tempered glass or laminated heat
<br />strengthened glass. Glazing in railing in -fell panels shall be of an approved safety
<br />glazing material that conforms to the provisions of Section 2406.1.1. For all glazing
<br />types, the minimum nominal thickness shall be '/a inch (6.4 mm). Fully tempered glass
<br />and laminated glass shall comply with Category iI of CPSC 16 CFR Part 1201 or Class
<br />A of ANSi Z97.1.
<br />2407.1.1 Loads.
<br />The panels and their support system shall be designed to withstand the kaads specified
<br />in Section 1607.8. A safety factor of four shall be used.
<br />2407.1.2 Support.
<br />Each handrail or guard section shall be supported by a minimum of three glass
<br />balusters or shall be otherwise supported to remain in place should one baluster panel
<br />fail. Glass balusters shall not be installed without an attached handrail or guard.
<br />Exception: A top rail shall not be required where the glass balusters are laminated
<br />glass with two or more glass plies of equal thickness and the same glass type when
<br />approved by the building official. The pars shall be designed to withstand the loads
<br />specified in Section 1607.8.
<br />2407.1.3 Parking garages.
<br />Glazing materials shall not be installed in handrails or guards in parking garages except
<br />for pedestrian areas not exposed to impact from vehicles.
<br />2407.1.4 Glazing in wind-borne debris regions.
<br />Glazing installed in in -fill panels or balusters in wind-borne debris regions shall comply
<br />with the following.
<br />2407.1.4.1 Ballusters and in -fill panels.
<br />Glass installed in exterior railing in -fill panels or balusters shall be laminated glass
<br />complying with Category II of CPSC 16 CFR Part 1201 or Class A of ANSI Z97.1.
<br />2407.1.4.2 Glass supporting top rail.
<br />When the top rail is supported by glass, the assembly shall be tested according to the
<br />impact requirements of Section 1609.1.2 (HVHZ shall comply with Section 1618.4.6.4).
<br />The top rail shall remain in place after impact.
<br />FIRE BLOCKING:
<br />R 302.11 Fire blocking.
<br />In combustible construction, fire blocking shall be provided to cut off both
<br />vertical and horizontal concealed draft openings and to form an effective
<br />fire barrier between stories, and between a top story and the roof space.
<br />Fire blocking shall be provided in wood framed construction in the following
<br />locations:
<br />1. In concealed spaces of stud walls and partitions, including furred spaces
<br />and parallel rows of studs or staggered studs, as follows:
<br />1.1. Vertically at the ceiling and floor levels.
<br />1.2. Horizontally at intervals not exceeding 10 feet (3048 mm).
<br />2. At interconnections between concealed vertical and horizontal spaces
<br />such as occur at soffits, drop ceilings and cove ceilings.
<br />3. In concealed spaces between stair stringers at the top and bottom of
<br />the run. Enclosed spaces under stairs shall comply with Section
<br />R302.7.
<br />4. At openings around vents, pipes, ducts, cables and wires at ceiling
<br />and floor level, with an approved material to resist the free passage of
<br />flame and products of combustion. The material filling this annular
<br />space shall not be required to meet the ASTM El 36 requirements.
<br />5. For the fire blocking of chimneys and fireplaces, see Section
<br />R 1003.19.
<br />6. Fire blocking of cornices of a two-family dwelling is required at the
<br />line of dwelling unit separation.
<br />R 302.11.1 Fire blocking materials.
<br />Except as provided in Section R302.11, Item 4, fire blocking shall consist of
<br />the following materials.
<br />1. Two-inch (51 mm) nominal lumber.
<br />2. Two thicknesses of 1-inch (25.4 mm) nominal lumber with broken lap
<br />joints.
<br />3. One thickness on 23/32 inch (18.3) wood structural panels with joints
<br />backed by 23/32 inch (18.3) wood structural panels.
<br />4. One thickness of 3/4 inch (19.1 mm) particleboard with joints backed
<br />by 3/4 inch (19.1 mm) particleboard.
<br />5. One -half -inch (12.7 mm) gypsum board.
<br />6. One -quarter -inch (6.4 mm) cement -based millboard.
<br />7. Batts or blankets of mineral wool or glass fiber or other approved
<br />materials installed in such a manner as to be securely retained in
<br />place.
<br />8. Cellulose insulation installed as tested in accordance with ASTM
<br />Ell or UL 263, for the specific application.
<br />REVISIONS
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<br />JOB NO.
<br />MASTER
<br />DATE
<br />JANUARY 1, 2018
<br />DRAWN BY
<br />Daniel M. Ossman
<br />SHEET NO.
<br />S - 3
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