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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
<br />defined in 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
<br />surface 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
<br />the 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 jalousies.
<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
<br />accordance with CPSC 16 CFR Part 1201. Glazing shall comply with the test
<br />criteria for Category II, unless otherwise indicated in Table 2406.2(1).
<br />Exception: Glazing not in doors or enclosures for hot tubs, whirlpools, saunas,
<br />steam rooms, bathtubs and showers shall be permitted to be tested in
<br />accordance with ANSI Z97.1. Glazing shall comply with the test criteria for Class
<br />A, unless otherwise indicated 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
<br />specifying who applied the designation, the manufacturer or installer and the
<br />safety glazing standard with which it complies, as well as the information
<br />specified in Section 2403.1. The designation shall be acid etched, sand blasted,
<br />ceramic fired, laser etched, embossed or of a type that once applied, cannot be
<br />removed without being destroyed. A label as defined in Section 202 and meeting
<br />the requirements of this section shall be permitted in lieu of the manufacturer's
<br />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
<br />a removable paper designation.
<br />2406.3.1 Multi -pane assemblies.
<br />Multi -pane glazed assemblies having individual panes not exceeding 1 square
<br />foot (0.09 m2) in exposed areas shall have at least one pane in the assembly
<br />marked as indicated in Section 2406.3. Other panes in the assembly shall be
<br />marked "CPSC 16 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
<br />considered 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
<br />shall be 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
<br />nearest vertical edge of the glazing is within a 24-inch (610 mm) arc of either
<br />vertical edge of the door in a closed position and where the bottom exposed
<br />edge of the glazing is less than 60 inches (1524 mm) above the walking surface
<br />shall be considered a hazardous location.
<br />Exceptions:
<br />1. Decorative glazing.
<br />2. Where there is an intervening wall or other permanent barrier between the
<br />door and glazing.
<br />3. Where access through the door is to a closet or storage area 3 feet (914 mm)
<br />or less 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
<br />in a closed position in one- and two-family dwellings or within dwelling units in
<br />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
<br />conditions shall be considered a hazardous location:
<br />1. The exposed area of an individual pane is greater than 9 square feet (0.84
<br />m2);
<br />2. The bottom edge of the glazing is less than 18 inches (457 mm) above the
<br />floor;
<br />3. The top edge of the glazing is greater than 36 inches (914 mm) above the
<br />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 side(s) of the glazing 34
<br />to 38 inches (864 to 965 mm) above the walking surface. The rail shall be
<br />capable of withstanding a horizontal load of 50 pounds per linear foot (730 N/m)
<br />without contacting the glass and be a minimum of 1 1/2 inches (38 mm) in cross -
<br />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,
<br />walking surface or other horizontal or sloped (within 45 degrees of horizontal)
<br />(0.78 rad) surface 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
<br />nonstructural in -fill panels, regardless of area or height above a walking surface
<br />shall be considered a hazardous location.
<br />2406.4.5 Glazing and wet surfaces. Glazing in walls, enclosures or fences
<br />containing or facing hot tubs, spas, whirlpools, saunas, steam rooms, bathtubs,
<br />showers and indoor or outdoor swimming pools where the bottom exposed edge
<br />of the glazing is less than 60 inches (1524 mm) measured vertically above any
<br />standing or walking surface shall be considered a hazardous location. This shall
<br />apply to single glazing and all panes in multiple glazing.
<br />Exception:
<br />1. Glazing that is more than 60 inches (1524 mm), measured horizontally and in
<br />a straight line, from the water's edge of a bathtub, hot tub, spa, whirlpool or
<br />swimming pool.
<br />2. Outboard sacrificial panes in laminated insulating glass units in walls where
<br />the exterior of the unit is not exposed to any of the hazardous locations specified
<br />in Section 2406.4.3 or 2406.4.5.
<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
<br />(1524 mm) above the plane of the adjacent walking surface of stairways,
<br />landings between flights of stairs, and ramps shall be considered a hazardous
<br />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
<br />than 18 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
<br />less 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
<br />and 1607.8 where the plane of the glass is greater than 18 inches (457 mm) from
<br />the guard.
<br />2406.5 Fire department access panels.
<br />Fire department glass access panels shall be of tempered glass. For insulating
<br />glass 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
<br />either single fully tempered glass, laminated fully tempered glass or laminated
<br />heat strengthened glass. Glazing in railing in -fill panels shall be of an approved
<br />safety glazing material that conforms to the provisions of Section 2406.1.1. For
<br />all glazing types, the minimum nominal thickness shall be 1/4 inch (6.4 mm). Fully
<br />tempered glass and laminated glass shall comply with Category II of CPSC 16
<br />CFR Part 1201 or Class A of ANSI Z97.1.
<br />2407.1.1 Loads.
<br />The panels and their support system shall be designed to withstand the loads
<br />specified in Section 1607.8 using a safety factor of four.
<br />2407.1.2 Structural glass baluster panels.
<br />Guards with structural glass baluster panels shall be installed with an attached
<br />top rail or handrail. The top rail or handrail shall be supported by not fewer than
<br />three glass baluster panels, or shall be otherwise supported to remain in place
<br />should one glass baluster panel fail.
<br />Exception: An attached top rail or handrail is not required where the glass
<br />baluster panels are laminated glass with two or more glass plies of equal
<br />thickness and of the same glass type. The panels shall be tested to remain in
<br />place as a barrier following impact or glass breakage in accordance with ASTM
<br />E2353.
<br />2407.1.3 Parking garages.
<br />Glazing materials shall not be installed in handrails or guards in parking garages
<br />except 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
<br />comply with the following.
<br />2407.1.4.1 Balusters and in -fill panels.
<br />Glass installed in exterior railing in -fill panels or balusters shall be laminated
<br />glass complying with Category II of CPSC 16 CFR Part 1201 or Class A of ANSI
<br />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
<br />to the impact requirements of Section 1609.1.2 (HVHZ shall comply with Section
<br />1618.4.6.4). The top rail shall remain in place after impact.
<br />SECTIONR903
<br />WEATHER PROTECTION
<br />R903.1 General.
<br />Roof decks shall be covered with approved roof coverings
<br />secured to the building or structure in accordance with the
<br />provisions of this chapter. Roof assemblies shall be designed and
<br />installed in accordance with this code and the approved
<br />manufacturer's installation instructions such that the roof
<br />assembly shall serve to protect the building or structure.
<br />R903.2 Flashing.
<br />Flashings shall be used to seal roofing systems, where the
<br />system is interrupted or terminated and shall be installed in a
<br />manner that prevents moisture from entering the wall and roof
<br />through joints in copings, through moisture permeable materials
<br />and at intersections with parapet walls and other penetrations
<br />through the roof plane.
<br />R903.2.1 Locations.
<br />Flashings shall be installed at wall and roof intersections,
<br />wherever there is a change in roof slope or direction and around
<br />roof openings. Where flashing is of metal, the metal shall be
<br />corrosion resistant with a thickness of not less than provided in
<br />Table R903.2.1 or in compliance with RAS 111.
<br />Exception: Flashing is not required at hip and ridge junctions.
<br />TABLE R903.2.1 METAL FLASHING MATERIAL
<br />GAGE MINIMUM
<br />WEIGHT
<br />MATERIAL
<br />THICKNESS
<br />GAGE
<br />(inches)
<br />Copper
<br />0.024
<br />-
<br />1 (16 oz)
<br />Aluminum
<br />0.024
<br />-
<br />-
<br />5tainless steel
<br />-
<br />28
<br />-
<br />26
<br />26
<br />Galvanized
<br />0.0179
<br />(zinc coated
<br />(zinc coated
<br />steel
<br />G90)
<br />G90)
<br />Aluminum
<br />26
<br />26
<br />zinc coated
<br />0.0179
<br />(AZ50
<br />(AZ50
<br />steel
<br />alum zinc)
<br />alum zinc)
<br />Zinc alloy
<br />0.027
<br />-
<br />-
<br />Lead
<br />-
<br />2.5 (40 oz.)
<br />-
<br />Painted terne
<br />-
<br />-
<br />1.25 (20 oz.)
<br />REVISIONS
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<br />JOB NO.
<br />MASTER
<br />DATE
<br />JANUARY 1, 2021
<br />DRAWN BY
<br />Daniel M. Ossman
<br />SHEET NO.
<br />S-4
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