SECTION
1013 GUARDS
1013.1 Where required. Guards shall be located along
open-sided walking surfaces, mezzanines, industrial equipment
platforms, stairways, ramps and landings that are located
more than 30 inches (762 mm) above the floor or grade below.
Guards shall be adequate in strength and attachment in accordance
with Section 1607.7. Where glass
is used to provide a guard or as a portion of the guard
system, the guard shall also comply with Section
2407. Guards shall also be located along
glazed sides of stairways, ramps and landings that are located
more than 30 inches (762 mm) above the floor or grade below
where the glazing provided does not meet the strength and
attachment requirements in Section
1607.7.
Exception:
Guards are not required for the following locations:
1. On the loading side of
loading docks or piers.
2. On the audience side
of stages and raised platforms, including steps leading
up to the stage and raised platforms.
3. On raised stage and
platform floor areas, such as runways, ramps and side
stages used for entertainment or presentations.
4. At vertical
openings in the performance area of stages and platforms.
5. At elevated
walking surfaces appurtenant to stages and platforms for
access to and utilization of special lighting or equipment.
6. Along vehicle
service pits not accessible to the public.
7. In assembly
seating where guards in accordance with Section
1025.14 are permitted and provided.
1013.2 Height. Guards
shall form a protective barrier not less than 42 inches
(1067 mm) high, measured vertically above the leading edge
of the tread, adjacent walking surface or adjacent seat
board.
Exceptions:
1. For
occupancies in Group R-3, and within individual I dwelling
units in occupancies in Group R-2, guards whose top rail
also serves as a handrail shall have a height not less
than 34 inches (864 mm) and not more than 38 inches (965
mm) measured vertically from the leading edge of the stair
tread nosing.
2. The height in assembly
seating areas shall be in accordance with Section
1025.14.
1013.3
Opening limitations. Open guards shall have balusters
or ornamental patterns such that a 4-inch-diameter (102
mm) sphere cannot pass through any opening up to a height
of 34 inches (864 mm). From a height of 34 inches (864 mm)
to 42 inches (1067 mm) above the adjacent walking surfaces,
a sphere 8 inches (203 mm) in diameter shall not pass.
Exceptions:
1.The
triangular openings formed by the riser, tread and bottom
rail at the open side of a stairway shall be of a maximum
size such that a sphere of 6 inches (152 mm) in diameter
cannot pass through the opening.
2. At
elevated walking surfaces for access to and use of electrical,
mechanical or plumbing systems or equipment, guards shall
have balusters or be of solid materials such that a sphere
with a diameter of 21 inches (533 mm) cannot pass through
any opening.
3. In
areas that are not open to the public within occupancies
in Group 1-3, F, H or S, balusters, horizontal intermediate
rails or other construction shall not permit a sphere
with a diameter of 21 inches (533 mm) to pass through
any opening.
4. In
assembly seating areas, guards at the end of aisles where
they terminate at a fascia of boxes, balconies and galleries
shall have balusters or ornamental patterns such that
a 4-inch-diameter (102 mm) sphere cannot pass through
any opening 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, a sphere 8 inches
(203 mm) in diameter shall not pass.
5.
Within individual dwelling units and sleeping units in
Group R-2 and R-3 occupancies, openings for required guards
on the sides of stair treads shall not allow a sphere
of 4.375 inches (111 mm) to pass through.
1013.4
Screen porches. Porches and decks which 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.
1013.5 Mechanical equipment.
Guards shall be provided where appliances, equipment, fans,
roof hatch openings or other 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 be constructed so as to
prevent the passage of a 21-inch-diameter (533 mm) sphere.
The guard shall extend not less than 30 inches (762 mm)
beyond each end of such appliance, equipment, fan or component.
1013.6
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 be constructed
so as to prevent the passage of a 21-inch-diameter (533
mm) sphere.