International Building Code Section 3104


International Building Code 3104.1

General. This section shall apply to connections
between buildings such as pedestrian walkways or tunnels,
located at, above or below grade level, that are used as a means
of travel by persons. The pedestrian walkway shall not contribute
to the building area or the number of stories or height of
connected buildings.

International Building Code 3104.10

Tunneled walkway. Separation between the tunneled
walkway and the building to which it is connected shall not be
less than 2-hour fire-resistant construction and openings
therein shall be protected in accordance with Table 715.4.

International Building Code 3104.2

Separate structures. Connected buildings shall be
considered to be separate structures.
Exceptions:
1. Buildings on the same lot in accordance with Section
503.1.2.
2. For purposes of calculating the number of Type B
units required by Chapter 11, structurally connected
buildings and buildings with multiple wings shall be
considered one structure.
530 2006 INTERNATIONAL BUILDING CODE.
SPECIAL CONSTRUCTION

International Building Code 3104.3

Construction. The pedestrian walkway shall be of
noncombustible construction.
Exceptions:
1. Combustible construction shall be permitted where
connected buildings are of combustible construction.
2. Fire-retardant-treated wood, in accordance with
Table 601, Note c, shall be permitted for the roof construction
of the pedestrian walkway where connected
buildings are a minimum of Type I or II construction.

International Building Code 3104.4

Contents. Only materials and decorations approved by
the building official shall be located in the pedestrianwalkway.

International Building Code 3104.5

Fire barriers between pedestrian walkways and
buildings.Walkways shall be separated from the interior of the
building by fire-barrierwalls with a fire-resistance rating of not
less than 2 hours. This protection shall extend vertically from a
point 10 feet (3048 mm) above the walkway roof surface or the
connected building roof line, whichever is lower, down to a
point 10 feet (3048 mm) below the walkway and horizontally
10 feet (3048 mm) from each side of the pedestrian walkway.
Openings within the l0-foot (3048 mm) horizontal extension of
the protectedwalls beyond thewalkway shall be equipped with
devices providing a 3/4-hour fire protection rating in accordance
with Section 715.
Exception: The walls separating the pedestrian walkway
from a connected building are not required to have a
fire-resistance rating by this section where any of the following
conditions exist:
1. The distance between the connected buildings is more
than 10 feet (3048 mm), the pedestrian walkway and
connected buildings, except for open parking
garages, are equipped throughout with an automatic
sprinkler system in accordance with NFPA 13 and the
wall is constructed of a tempered, wired or laminated
glass wall and doors subject to the following:
1.1. The glass shall be protected by an automatic
sprinkler system in accordance with NFPA 13
and the sprinkler system shall completely wet
the entire surface of interior sides of the glass
wall when actuated.
1.2. The glass shall be in a gasketed frame and installed
in such a manner that the framing system
will deflect without breaking (loading)
the glass before the sprinkler operates.
1.3. Obstructions shall not be installed between
the sprinkler heads and the glass.
2. The distance between the connected buildings is more
than 10 feet (3048 mm) and both sidewalls of the
pedestrian walkway are at least 50 percent open with
the open area uniformly distributed to prevent the
accumulation of smoke and toxic gases.
3. Buildings are on the same lot in accordance with Section
503.1.2.
4. Where exterior walls of connected buildings are
required by Section 704 to have a fire-resistance rating
greater than 2 hours, the walkway shall be
equipped throughout with an automatic sprinkler system
installed in accordance with NFPA 13.

International Building Code 3104.6

Public way. Pedestrian walkways over a public way
shall also comply with Chapter 32.

International Building Code 3104.7

Egress. Access shall be provided at all times to a pedestrian
walkway that serves as a required exit.

International Building Code 3104.8

Width. The unobstructed width of pedestrian walkways
shall not be less than 36 inches (914 mm). The total width
shall not exceed 30 feet (9144 mm).

International Building Code 3104.9

Exit access travel. The length of exit access travel shall
not exceed 200 feet (60 960 mm).
Exceptions:
1. Exit access travel distance on a pedestrian walkway
equipped throughout with an automatic sprinkler system
in accordance withNFPA 13 shall not exceed 250
feet (76 200 mm).
2. Exit access travel distance on a pedestrian walkway
constructed with both sides at least 50 percent open
shall not exceed 300 feet (91 440 mm).
3. Exit access travel distance on a pedestrian walkway
constructed with both sides at least 50 percent open,
and equipped throughout with an automatic sprinkler
system in accordance with NFPA 13, shall not exceed
400 feet (122 m).