|
|
|
|
|
|
|
|
SECTION 712 PENETRATIONS
712.4.1.1 Through penetrations.
Through penetrations of fire-resistance-rated horizontal assemblies
shall comply with Section 712.4.1.1.1
or 712.4.1.1.2.
Exceptions:
1.Penetrations by steel, ferrous or copper conduits, pipes,
tubes or vents or concrete or masonry items through
a single fire-resistance-rated floor assembly where the
annular space is protected with materials that prevent the
passage of flame and hot gases sufficient to ignite cotton
waste when subjected to ASTM E 119 time-temperature fire
conditions under a minimum positive pressure differential
of 0.01 inch (2.49 Pa) of water at the location of the penetration
for the time period equivalent to the fire-resistance rating
of the construction penetrated. Penetrating items with a
maximum 6-inch (152 mm) nominal diameter shall not be limited
to the penetration of a single fire-resistance-rated floor
assembly, provided the aggregate area of the openings through
the assembly does not exceed 144 square inches (92 900 mm2)
in any 100 square feet (9.3 m2) of floor area.
2.Penetrations
in a single concrete floor by steel, ferrous or copper conduits,
pipes, tubes or vents • with a maximum 6-inch (152
mm) nominal diameter, provided the concrete, grout or mortar
is installed the full thickness of the floor or the thickness
required to maintain the fire-resistance rating. The penetrating
items shall not be • limited to the penetration of
a single concrete floor, provided the area of the opening
through each floor does not exceed 144 square inches (92
900 mm2).
3.Penetrations by listed electrical
boxes of any material, provided such boxes have been tested
for use in fire-resistance-rated assemblies and installed
in accordance with the instructions included in the listing.
|
|
|
All
Rights Reserved. This 2006 International Building Code® is a
copyrighted work owned by the International Code Council, Inc. Without
advance written permission from the copyright owner, no part of
this book may be reproduced, distributed, or transmitted in any
form or by any means, including, without limitation, electronic,
optical or mechanical means (by way of example and not limitation,
photocopying, or recording by or in an information storage retrieval
system). For information on permission to copy material exceeding
fair use, please contact: Publications, 4051West Flossmoor Road,
Country Club Hills, IL 60478-5795. Phone 1-888-ICC-SAFE (422-7233).
Trademarks: “International Code Council,” the “International
Code Council” logo and the “International Building Code”
are trademarks of the International Code Council, Inc.
|
|
