PART 1- GENERAL
A. This Section includes metal, vertical, gravity-type chutes including:
1. Waste chutes
2. Extra 1/4-inch thick steel plates at bends in chutes
B. Related Sections include the following:
1. Division 11 Section “Waste Compactor”.
2. Division 15 Sections for water service connections.
3. Division 16 Sections for electrical service connections.
A. Product Data: For each type of product indicated.
B. Shop Drawings: Detail chute assemblies and indicate installation details,
dimensions, required clearances, method of field assembly, components,
and location and size of each field connection.
1.3 QUALITY ASSURANCE
A. NFPA Compliance: Provide chutes complying with NFPA 82.
PART 2- PRODUCTS
A. Manufacturers: Subject to compliance with requirements, provide
products by one of the following:
1. American Chute Systems
2. Cutler Manufacturing Corporation
3. US Chutes Corp.
4. Wilkinson Co., Inc.
A. Chute Metal: Aluminum-coated, cold-rolled, commercial steel sheet, ASTM A
463, Type 1 with not less than T1-40 coating.
1. Specified (Nominal) Thickness: 0.060 inch. (16 gauge).
B. Reinforcing: Steel Plates, Shapes, and Bars: ASTM A 36.
A. Intake Door Assemblies: ASTM A 240/A 240M, Type 304 stainless steel,
self-closing units with positive latch and latch handle; Class B labeled;
1-1/2 hour fire rated with 30-minute temperature rise of 250 deg F; and
with frame suitable for enclosing chase construction.
1. Door Type: Hopper
2. Size: Manufacturer’s standard size for door type, and chute type and
3. Provide 1/4-inch thick rubber back draft baffle at each intake door
4. Finish: Manufacturer’s standard satin or No.3 directional polish finish.
B. Discharge Door Assemblies: Aluminum-coated-steel doors of 1-hour fire-rated
construction that is suitable for Class B openings; equipped with fusible links that
cause doors to close in the event of a fire.
1. Direct Vertical Discharge: Provide inclined, horizontally rolling, shutter-
C. Access Door Assemblies: Manufacturer’s standard ASTM A 240, Type 304
Stainless steel doors; Class B labeled; 1-1/2 hour fire rated with 30-minute
temperature rise of 250 deg F; with frame suitable for enclosing chase
construction; and in satin or No. 3 directional polish finish.
C. Reinforcing: Provide hot-dipped galvanized 1/4-inch thick steel plates as external
reinforcing at all bends, offsets or where indicated on drawings. Plates shall
be hot-dip galvanized to comply with ASTM A 123.
A. Fire Sprinklers: NPS ˝ fire sprinklers ready for piping connections.
B. Flushing Spray Unit: NPS ˝ spray head unit located in chute above highest
intake door, ready for hot-water piping connection, and with access for head
and piping maintenance.
D. Sanitizing Unit: NPS 3/4 disinfecting and sanitizing spray head unit located in
chute above highest intake door, including 1-gallon tank and adjustable proportioning
valve with bypass for manual control of sanitizing and flushing operation, ready
for hot-water piping connection, and with access for head and piping maintenance.
E. Provide Daubert 3680V-DAMP sound coat (or equal) vibration dampening
compound to the exterior of the chute only. Included sound isolator pads at
floor support frame.
F. Sprinkler System: Chute shall be protected internally by automatic sprinklers. This requires at or above the top intake door of the chute, and in addition, a sprinkler shall be installed within the chute at alternate floor levels in buildings over two stories in height with mandatory sprinkler located at the lowest level.
A. General: Factory-assemble chute to greatest extent practical with continuously
welded or lock-seamed joints without bolts, rivets, or clips projecting on chute interior.
Include intake-door assemblies and chute-support frames at each floor, and chute
expansion joints between each support point.
B. Roof Vent: Fabricate vent unit to extend 48” above roof with full-diameter,
screened vent and metal safety cap or glass explosion-release cap. Fabricate with
roof-deck flange, and with counter flashing and clamping ring of nonferrous metal
compatible with chute metal.
C. Fire Sprinklers: Comply with NFPA 13. Locate fire sprinklers at or above the top
service opening of chutes, within the chute at alternate floor levels and at the lowest
D. Equipment Access: Fabricate chutes with access for maintaining equipment located
with the chute, such as flushing and sanitizing units, fire sprinklers and plumbing.
PART 3 – EXECUTION
A. General: Comply with NFPA 82 requirements and with chute manufacture’s written
instructions. Assemble components with tight, non-leaking joints. Anchor securely to
supporting structure to withstand impact and stresses on vent units. Install chute and
components to maintain fire-resistive construction of chute and enclosing chase.
B. Install chutes plumb, without offsets or obstructions that might prevent materials from free falling within chutes.
C. Coordination with Roofing: Anchor roof flanges of chute vents before installing roofing and flashing. Install counter-flashing after roofing and flashing are installed.
D. Intake and Discharge Doors: Align door units with throat sections of chutes for
safe, snag-resistant, sanitary depositing of materials in chutes by users.
E. Touch-Up and Re-Coating: After installation provide field touch-up of sound coating at
all damaged areas and recoat all field joints with sound coating material.
A. Test chute components after installation. Operate doors, locks, to demonstrate that hardware (and electrical wiring, if applicable) is adjusted and operating correctly. Complete test operations before installing chase enclosures.
B. Test fire sprinklers and heat- and smoke-sensing devices for proper operation.
C. Operate sanitizing unit through one complete cycle of chute use and cleanup, and replenish chemicals or cleaning fluids in unit containers.
A. After completing chase enclosure, clean exposed surfaces of chute system’s components. Do not remove labels of independent testing and inspecting agencies.
A. Demonstrate use of chute and equipment to Owner’s personnel.
B. Demonstrate replenishment of sanitizing-unit chemicals or cleaning fluids.
END OF SECTION