Clicky

SECTION 11175

 

LINEN CHUTES

 

PART 1- GENERAL

 

1.1       SUMMARY

 

A.           This Section includes metal, vertical, gravity-type chutes including:

1.       Linen chutes.

 

B.           Related Sections include the following:

1.       Division 15 Sections for water service connections.

2.       Division 16 Sections for electrical service connections.

 

1.2                 SUBMITTALS

 

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 Standard No. 82.

 

PART 2- PRODUCTS

 

2.1   MANUFACTURERS

 

A.           Manufacturers:  Subject to compliance with requirements, provide

Products by one of the following:

 

1.       American Chute Systems.

 

 

2.2   MATERIALS

 

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.

 

 

2.3   DOORS

 

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:  Square, side-hinged, 180 degree swing.

2.       Size:  Manufacturer’s standard size for door type, and chute type and

Diameter indicated.

3.       Finish:  Manufacturer’s standard satin or No.3 directional polish finish.

 

B.    Discharge Door Assemblies:  Stainless steel doors of 1-hour fire-rated construction

that is suitable for Class B openings; equipped with fusible link that cause door to

close in the event of a fire.

 

      1.  Hopper Discharge:  Provide top hinged, self-closing hopper door with self-latching    

           hardware; floor leg-brace designed to absorb impact of material dropping against chute;

           and minimum  2” NPS drain pipe connection.

 

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.

 

 

2.4        ACCESSORIES

 

A.           Fire Sprinklers:  NPS ½ fire sprinklers ready for piping connections.

 

B.           Flushing Spray Unit:  NPS ½ spray head unit located in chute above highest

intake door, ready for hot-water piping connection, and with access for head

and piping maintenance.

  

C.           Individual Key Locks:  Provide individual key locking devices at each intake door for

        building maintenance.

 

 

2.5   FABRICATION

 

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

        service level.

 

D.         Equipment Access:  Fabricate chutes with access for maintaining equipment located

        with the chute, such as flushing and sanitizing units, fire sprinklers and plumbing and

        electrical connections.

 

 

PART 3 – EXECUTION

 

 

3.1    INSTALLATION

 

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 flashing.  Install counter-flashing after roofing and flashing are installed. 

 

D.           Intake and Discharge Doors:  Interface 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.

 

 

3.2    TESTING

 

A.         Test chute components after installation.  Operate doors, locks, to demonstrate that hardware

        is adjusted and operating correctly.  Complete test operations before installing chase enclosures.

 

 

 

3.3   CLEANING

 

A.         After completing chase enclosure, clean exposed surfaces of chute system’s components.

         Do not remove labels of independent testing and inspecting agencies.

 

 

3.4   DEMONSTRATION

 

A.          Demonstrate use of chute and equipment to Owner’s personnel.

 

B.          Demonstrate replenishment of sanitizing-unit chemicals or cleaning fluids.

 

 

 

 

www.americanchutesystems.com