UFC 3-420-01
25 October 2004
IPC CHAPTER 10 "INTERCEPTORS AND SEPARATORS" SUPPLEMENTS.
A.
SECTION 1003.1 Where required. Add after the last sentence: "Grease
interceptors should be provided to receive the wastes from pot sinks, pre-wash sinks,
dishwashers without pre-wash sections and soup kettles. Interceptors will be installed
underground outside the building. The area surrounding interceptors will be paved and
provided with suitable drainage facilities. Where design temperatures are less than 0F
(18C), interceptors should be located within the building, remote from the kitchen
area. An interceptor shall not be required or provided for individual dwelling units or any
private living quarters."
IPC CHAPTER 11 "STORM DRAINAGE" SUPPLEMENTS.
A.
SECTION 1101.1 Scope. Add after the last sentence: "Storm drainage will
include roof drains, leaders, and conductors within the building and to a point 5 feet
(1-1/2 m) outside the building. This manual does not cover storm drainage outside
buildings and building perimeter foundation drainage systems."
B.
SECTION 1104.2 Combining storm with sanitary drainage. Replace the
last sentence with the following: "When a combined drainage system is to be provided,
the systems should be maintained as separate systems within the building. Systems
should be combined outside of the building and preferably at a manhole."
C.
Add "SECTION 1104.4 Insulation of rainwater conductors. To prevent
condensation, insulate horizontal piping runs and roof drains inside the building with a
minimum of one-inch (25 mm) thick insulation".
D.
SECTION 1106.1 General. Add after the last sentence: "For Army and Air
Force projects, roof drainage systems will be designed in accordance with rainfall
intensity-frequency data in TM 5-820-1/AFR 88-5, Vol. 1 Water Supply Sources and
General Considerations."
IPC CHAPTER 12 "SPECIAL PIPING AND STORAGE SYSTEMS" SUPPLEMENTS.
A.
[For Army and Air Force projects only] Delete Chapter 12 "SPECIAL
PIPING AND STORAGE SYSTEMS" in it's entirety. Central systems for medical gas
and vacuum will be in accordance with AFR 88-50, Criteria for Design and Construction
of Air Force Health Facilities.
IPC CHAPTER 13 "REFERENCED STANDARDS" SUPPLEMENTS.
A.
Delete the last sentence of the first paragraph.
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