UFC 3-600-01
26 September 2006
Provide complete automatic sprinkler protection for all windowless (limited
access) structures.
6-25
UNDERGROUND STRUCTURES.
Underground structures are defined in and must conform to the requirements in
NFPA 101. Provide underground structures that consist of two occupied levels
or more, or that has an occupied level that is greater than 7.6 m (25 ft) below
grade level, with a manually activated smoke exhaust system.
6-25.1
Sprinkler Protection.
Provide complete automatic sprinkler protection for all occupiable underground
structures.
6-26
GAS SERVICE.
Install gas service mains in accordance with NFPA 54, National Fuel Gas Code,
and NFPA 58, Liquefied Petroleum Gas Code. Gas service mains are not
permitted within the perimeter of foundation lines. Provide natural draft cross
ventilation for building crawl spaces containing gas service piping. Raise supply
connections from the gas service mains above grade outside the foundation wall
and pass through a full swing joint or loop of metallic tubing before entering the
building. This will avoid pipe rupture in the event of differential settlement or
earthquake. Locate pressure regulators outside of buildings or vent to the
outside. Standards for heating system components common to all fuel systems
are provided in NFPA 211, Chimneys, Fireplaces, Vents, and Solid Fuel-Burning
system devices listed by an NRTL.
6-27
COAL.
6-27.1
Storage.
Locate coal storage to comply with the following restrictions:
6-27.1.1
Do not locate coal storage in an area where contact with an
external heat source is possible. Avoid locating storage near piping, flues, boiler
walls, and over steam mains, even if buried. Coal must not be stored over or
under fire service mains. Maintain a separation distance of at least 6.1 m (20 ft)
from any fire service main.
6-27.1.2
Do not pile coal over manhole covers or covered pipe trenches that
might allow air to find its way into the pile. Do not arrange piles of coal around or
in contact with timbers, columns, or large pipes, as air may pass along these
surfaces and produce a flue effect. Do not vent coal piles with pipes or flues.
72
Previous Page
