Project Name
Project Number
TEMF
Statement of Work
UFC 4-214-02, 24 Jul 03
and 0.51 mm minimum thickness over 150 mm diameter corrosion-resistant steel. Connect to
duct by welding or with screws or flanged joint with gasket. Install vehicle adapters provided by
the using activity. Secure hose terminal connections by screws, clamps, or flanged
connections. [Provide winch operated hose assembly.]
10-12.1.4 Supporting Elements. Support ducting with anti-sway bracing to resist perceptible
movement in response to forces imposed by flexible tubing location on handling. Suspend
tubing from overhead location and provide means to raise and lower for use. Assemble
suspension system with rigid pulley restraint, 3 mm diameter aircraft cable, pulleys, and
manually operated winch fitted with safety ratchet lock and slip resistant hand grip.
10-12.2
Welding exhaust. Provide a [hanging] [long reach type] welding fume exhaust
system as specified and indicated. Construct and install in accordance with applicable
requirements of NFPA 91.
10-2.2.1 Fans. Fans shall be centrifugal type. [Provide unit of all welded construction,
utilizing minimum 14-gage carbon steel in AMCA Class II construction.] [Internal and external
protective coating shall be manufacturer's standard, engineered quality type, with properties
comparable to [air-dry or baked phenolic,] [or] [epoxy] applied in multiple coats of 0.10 to 0.15
mm dry film thickness.] [Mount entire assembly for vibration isolation on structural steel base
and spring or elastomer type isolators with minimum transmissibility of [10] [5] percent.]
[Provide split sleeve or flexible connection at fan inlet.]
10-2.2.2 Ducts. Construct ducts and miter or stamped fittings with galvanized steel. Duct
sheet metal gages shall conform to Class I in SMACNA RIDCSTD and SMACNA RIDCS.
Construct suction side ductwork with lock groove seam longitudinal joints. Connect
circumferential joints between sections with push-on or bead and crimp type, secured with a
minimum 4 rivets or screws on ducts up to and including 100 mm diameter, and with screws or
rivets a minimum 80 mm on center on larger sizes of duct. Lap joints in the direction of air flow.
On disappearing overhead systems, assemble roller duct sections using pop rivets. Solder all
joints or construct ductwork leak-tight as for discharge side ductwork below. Construct ductwork
on the discharge side of the fan leak-tight with joints and seams welded, brazed, or soldered.
Provide flanges with suitable gaskets, where required. Repair damaged galvanizing with
galvanizing repair compound.
10-2.2.3 Flexible Tail Pipe Exhaust Tubing and Connectors. Provide corrosion protected,
spring steel helix reinforced, neoprene impregnated, woven fibrous glass fabric laminate,
flexible tubing with cuffed ends or equivalent construction. Connect to duct with clamp or
gasketed flange [and fit with swivel connected conical fume hood, constructed of minimum 20
gage aluminum [or 26 gage galvanized steel] and fitted with 13 mm mesh intake screen and
magnets for holding receptor in fixed location]. Secure tubing to terminal devices by clamping.
[Provide spring or weight counterbalanced supporting arms for flexible hose section of long
reach system.]
10-2.2.4 Supporting Elements. Support ducting with anti-sway bracing to resist perceptible
movement in response to forces imposed by flexible tubing location on handling. Suspend
tubing from overhead location [and provide means to raise and lower for use].
10-13
PIPING SYSTEMS. Piping systems shall be in accordance with the following
subparagraphs. Fittings and valves shall be compatible for the piping systems in which installed.
Provide dielectric unions where required. Provide flexible connections where necessary to
SOW-99
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