Complete Compiled Specification.pdf - Peck Ormsby Construction

Approved sealer equal to "Hard Cast" shall be applied to the coupling and fittings. Sealer is applied to the
outside of the joint, extending 1 inch on each side of the joint bead and covering all screw heads. Plastic
backed tape is immediately applied over the wet sealer.
The duct sealer must be specifically formulated for the job sealing the field joints for high-pressure systems.
The sealer shall be compatible with plastic-backed duct tape so the two shall cure and bond together.
Samples of sealer and tape and the specification data sheets shall be submitted to the Owner's
representative for approval.
Flanged joints shall be sealed by Neoprene Rubber Gaskets.
ACCESS DOORS AND PANELS:
Location: Provide access doors in casings, plenums, and ducts where shown on the drawings and where
specified for ready access to operating parts including fire dampers, smoke dampers, valves, and concealed
coils.
Pressure Clarification: Construct and install access doors in accordance with SMACNA Standards to suit
the static pressure classifications and the locations where installed.
Access Doors in Ducts: Provide and size doors as follows:
1. Minimum 24-inch by 24-inch clear opening.
2. When field conditions require an access opening smaller than 16-inch by 12-inch, provide a 24-inch
long removable section of casing or duct, secured with quick acting locking devices, 6 inches on
centers, to permit ready access without dismantling other equipment.
Door Requirements: Provide doors in casings and duct as follows:
1. Arrange doors so that system air pressure will assist closure and prevent opening when the system
is in operation.
2. Coordinate doors and equipment to provide unrestricted passage through clear door opening,
without removal of any equipment.
3. Where pressure regulating dampers are installed in ducts or plenums, provide access doors with a
clear wire glass observation port, 6-inch by 6-inch minimum size. Anchor port with structural metal
frame, resilient gaskets and stainless steel bolts.
4. Hinges for doors in zinc coated or aluminum construction shall be steel or iron, zinc coated with
brass pins.
5. Hinges for doors in copper, copper nickel alloy construction shall be all brass.
CLOSURE COLLARS:
A duct ending at a wall or partition shall have the edge turned back to form a closure collar and flanged tight
to the wall or partition so that no sharp or ragged edge appears.
FLASHING:
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SEGO LILY ELEMENTARY SCHOOL CLASSROOM ADDITION March 2, 2009
AIR DISTRIBUTION 15800 - 2