not cast-in, voids shall be filled with latex mixed mortar cast to shape of
sleeve, and flange/external collar type sleeve shall be assembled with
butyl elastomer vapor barrier sealant through penetration to cold side
surface vapor barrier overlap and fastened to surface with masonry anchors.
Integral cast-in collar type sleeve shall be flashed [as indicated.] [with
not less than 100 mm 4 inches of cold side vapor barrier overlap of sleeve
surface.] Normally noninsulated penetrating round surfaces shall be sealed
to sleeve bore with mechanically expandable seals in vapor tight manner and
remaining warm and cold side sleeve depth shall be insulated with not less
than [100] [_____] mm [4] [_____] inches of foamed-in-place rigid
polyurethane or foamed-in-place silicone elastomer. Vapor barrier sealant
shall be applied to finish warm side insulation surface. Warm side of
penetrating surface shall be insulated beyond vapor barrier sealed sleeve
insulation for a distance which prevents condensation. Wires in
refrigerated space surface penetrating conduit shall be sealed with vapor
barrier plugs or compound to prevent moisture migration through conduit and
condensation therein.
3.1.3.2
General Service Areas
Each sleeve shall extend through its respective wall, floor, or roof, and
shall be cut flush with each surface. Pipes passing through concrete or
masonry wall or concrete floors or roofs shall be provided with pipe
sleeves fitted into place at the time of construction. Sleeves shall
provide a minimum of 6 mm 1/4 inch all-around clearance between bare pipe
and sleeves or between jacketed-insulation and sleeves. Except in pipe
chases or interior walls, the annular space between pipe and sleeve or
between jacket over-insulation and sleeve shall be sealed in accordance
with Section 07920 JOINT SEALANTS.
3.1.3.3
Waterproof Penetrations
Pipes passing through roof or floor waterproofing membrane shall be
installed through a 0.48 kg 17 ounce copper sleeve or a 0.81 mm 0.032 inch
thick aluminum sleeve, each within an integral skirt or flange. Flashing
sleeve shall be suitably formed, and skirt or flange shall extend not less
than 200 mm 8 inches from the pipe and shall be set over the roof or floor
membrane in a troweled coating of bituminous cement. The flashing sleeve
shall extend up the pipe a minimum of 50 mm 2 inches above the roof or
floor penetration. The annular space between the flashing sleeve and the
bare pipe or between the flashing sleeve and the metal-jacket-covered
insulation shall be sealed as indicated. Penetrations shall be sealed by
either one of the following methods.
a.
Waterproof Clamping Flange: Pipes up to and including 250 mm 10
inches in diameter passing through roof or floor waterproofing
membrane may be installed through a cast iron sleeve with caulking
recess, anchor lugs, flashing clamp device, and pressure ring with
brass bolts. Waterproofing membrane shall be clamped into place
and sealant shall be placed in the caulking recess.
b.
Modular Mechanical Type Sealing Assembly: In lieu of a waterproof
clamping flange, a modular mechanical type sealing assembly may be
installed. Seals shall consist of interlocking synthetic rubber
links shaped to continuously fill the annular space between the
pipe/conduit and sleeve with corrosion protected carbon steel
bolts, nuts, and pressure plates. Links shall be loosely
assembled with bolts to form a continuous rubber belt around the
pipe with a pressure plate under each bolt head and each nut.
SECTION 15652A
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