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[DOC File]Section 15010 - Mechanical General - Kinetics Noise
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This specification does not allow the use of the “12-inch rule” where the piping, duct and electrical may be exempted from seismic restraint based on the length of the support rods provided that the rods are not subjected to bending moments. Install restraint cables so they do not bend across edges of adjacent equipment or building structure.
12 inch diameter duct pipe

[DOCX File]Section 23 07 11 - HVAC, PLUMBING, AND BOILER PLANT …
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4.3.3.1 Pipe insulation and coverings, duct coverings, duct linings, vapor retarder facings, adhesives, fasteners, tapes, and supplementary materials added to air ducts, plenums, panels, and duct silencers used in duct systems, unless otherwise provided for in 4.3.3.1.1 or 4.3.3.1.2., shall have, in the form in which they are used, a maximum ...
12 inch galvanized duct pipe

SECTION 230529 - HANGERS AND SUPPORTS FOR HVAC …
Hangers for Pipe Sizes ½ (12.7 mm) to 1-1/2 Inch (38 mm): Carbon steel, adjustable swivel ring, UL listed, Grinnell Fig. 69 or equal. Use plastic coated hangers at all uninsulated copper piping. Hangers for Pipe Sizes 2 Inches (50.8 mm) and Cold Pipe Sizes 6 Inches (152.4 mm) and Over: Carbon steel, black or galvanized, adjustable, clevis, UL ...
12 inch round ductwork

[DOCX File]23 07 00 - DOA Home
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Grease ducts (Type I kitchen hood serving appliances that produce grease vapors or smoke) must be enclosed from the point of penetration of a ceiling, wall or floor to the outlet terminal in a 2-hour rated enclosure vented to the outside and constructed with 6”-12” clearance to the duct.
12 inch heating duct

[DOC File]SECTION 210529 - HANGERS AND SUPPORTS FOR FIRE …
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Hangers for Pipe Sizes ½ (12.7 mm) to 1-1/2 Inch (38 mm): Carbon steel, adjustable swivel ring, UL listed, Grinnell Fig. 69 or equal. Use plastic coated hangers at all uninsulated copper piping. Hangers for Pipe Sizes 2 Inches (50.8 mm) and Cold Pipe Sizes 6 Inches (152.4 mm) and Over: Carbon steel, black or galvanized, adjustable, clevis, UL ...
4 inch metal duct pipe

[DOC File]SECTION 260543 - UNDERGROUND DUCTS AND RACEWAYS …
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Warning Planks: Bury warning planks approximately 12 inches above direct-buried ducts and duct banks, placing them 24 inches o.c. Align planks along the width and along the centerline of duct bank. Provide an additional plank for each 12-inch increment of duct-bank width over a nominal 18 inches.
12 round metal duct pipe

[DOCX File]23 05 48 - DOA Home
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Above 12 inch, this product may be available only in single sphere, neoprene construction where the pressure/temperature ratings will need verification. STEAM AND STEAM CONDENSATE: Seamless corrugated bronze or type 321 stainless steel flexible hose …
6 inch round duct pipe

[DOCX File]Section 23 22 13 - STEAM AND CONDENSATE HEATING PIPING
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15 mm (1/2 inch) wide fiberglass reinforced pressure sensitive cloth tape to fasten cable to pipe at 300 mm (12 inch) intervals. Pipe surface temperature control thermostat: Cast aluminum, NEMA 4 (watertight) enclosure, 15 mm (1/2 inch) NPT conduit hub, SPST switch rated 20 amps at 480 volts ac, with capillary and copper bulb sensor.
12 inch metal ducting

12 inch duct pipe