International Building Code Section 711


International Building Code 711.1

General. Floor and roof assemblies required to have a
fire-resistance rating shall comply with this section.

International Building Code 711.2

Materials. The floor and roof assemblies shall be of
materials permitted by the building type of construction.

International Building Code 711.3

Fire-resistance rating. The fire-resistance rating of
floor and roof assemblies shall not be less than that required by
the building type of construction. Where the floor assembly
separates mixed occupancies, the assembly shall have a
fire-resistance rating of not less than that required by Section
508.3.2 based on the occupancies being separated. Where the
floor assembly separates a single occupancy into different fire
areas, the assembly shall have a fire-resistance rating of not less
than that required by Section 706.3.9. Floor assemblies separating
dwelling units in the same building or sleeping units in
occupancies in Group R-1, hotel occupancies, R-2 and I-1 shall
be a minimum of 1-hour fire-resistance-rated construction.
Exception: Dwelling unit and sleeping unit separations in
buildings of Type IIB, IIIB, and VB construction shall have
fire-resistance ratings of not less than 1/2 hour in buildings
equipped throughout with an automatic sprinkler system in
accordance with Section 903.3.1.1.

Ceiling panels. Where the weight of lay-in ceiling
panels, used as part of fire-resistance-rated floor/ceiling or
roof/ceiling assemblies, is not adequate to resist an upward
force of 1 lb/ft.2 (48 Pa), wire or other approved devices
shall be installed above the panels to prevent vertical displacement
under such upward force.

Access doors. Access doors shall be permitted in
ceilings of fire-resistance-rated floor/ceiling and roof/ceiling
assemblies provided such doors are tested in accordance
with ASTM E 119 as horizontal assemblies and labeled by
an approved agency for such purpose.

Unusable space. In 1-hour fire-resistance-rated
floor construction, the ceiling membrane is not required to
be installed over unusable crawl spaces. In 1-hour fire-resistance-
rated roof construction, the floor membrane is not
required to be installed where unusable attic space occurs
above.

International Building Code 711.3.1

Ceiling panels. Where the weight of lay-in ceiling
panels, used as part of fire-resistance-rated floor/ceiling or
roof/ceiling assemblies, is not adequate to resist an upward
force of 1 lb/ft.2 (48 Pa), wire or other approved devices
shall be installed above the panels to prevent vertical displacement
under such upward force.

International Building Code 711.3.2

Access doors. Access doors shall be permitted in
ceilings of fire-resistance-rated floor/ceiling and roof/ceiling
assemblies provided such doors are tested in accordance
with ASTM E 119 as horizontal assemblies and labeled by
an approved agency for such purpose.

International Building Code 711.3.3

Unusable space. In 1-hour fire-resistance-rated
floor construction, the ceiling membrane is not required to
be installed over unusable crawl spaces. In 1-hour fire-resistance-
rated roof construction, the floor membrane is not
required to be installed where unusable attic space occurs
above.

International Building Code 711.4

Continuity. Assemblies shall be continuous without
openings, penetrations or joints except as permitted by this section
and Sections 707.2, 712.4, 713 and 1020.1. Skylights and
other penetrations through a fire-resistance-rated roof deck or
slab are permitted to be unprotected, provided that the structural
integrity of the fire-resistance-rated roof construction is
maintained. Unprotected skylights shall not be permitted in
roof construction required to be fire-resistance rated in accordance
with Section 704.10. The supporting construction shall
be protected to afford the required fire-resistance rating of the
horizontal assembly supported.

International Building Code 711.5

Penetrations. Penetrations of fire-resistance-rated horizontal
assemblies shall comply with Section 712.

[edit]International Building Code 711.6

Joints. Joints made in or between fire-resistance-rated
horizontal assemblies shall comply with Section 713. The void
created at the intersection of a floor/ceiling assembly and an
exterior curtain wall assembly shall be protected in accordance
with Section 713.4.

International Building Code 711.7

Ducts and air transfer openings. Penetrations in horizontal
assemblies by ducts and air transfer openings shall comply
with Sections 716.

International Building Code 711.8

Floor fire door assemblies. Floor fire door assemblies
used to protect openings in fire-resistance-rated floors shall be
tested in accordance with NFPA 288, and shall achieve a
fire-resistance rating not less than the assembly being penetrated.
Floor fire door assemblies shall be labeled by an
approved agency. The label shall be permanently affixed and
shall specify the manufacturer, the test standard and the
fire-resistance rating.