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DRY PIPE AND PREACTION SPRINKLER SYSTEM

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DRY PIPE AND PREACTION SPRINKLER SYSTEM

DRY PIPE AND PREACTION SPRINKLER SYSTEM SECTION 211316

    TABLE OF CONTENTS

    DRY PIPE AND PREACTION SPRINKLER SYSTEM - SECTION 211316 .............................................. 1 PART 1 - GENERAL ........................................................................................................................................ 1 1.01 RELATED DOCUMENTS ................................................................................................................ 1 1.02 SUMMARY....................................................................................................................................... 1 1.03 ALLOWANCES ................................................................................................................................ 1 1.04 UNIT PRICES ................................................................................................................................... 1 1.05 DEFINITIONS................................................................................................................................... 1 1.06 SYSTEM DESCRIPTION: ................................................................................................................ 2 1.07 PERFORMANCE REQUIREMENTS ................................................................................................ 2 1.08 SUBMITTALS .................................................................................................................................. 3 1.09 QUALITY ASSURANCE .................................................................................................................. 5 1.10 DELIVERY STORAGE AND HANDLING ...................................................................................... 6 1.11 PROJECT CONDITIONS .................................................................................................................. 6 1.12 COORDINATION ............................................................................................................................. 6 1.13 WARRANTY .................................................................................................................................... 6 PART 2 - PRODUCTS ...................................................................................................................................... 6 2.01 ACCEPTABLE MANUFACTURERS ............................................................................................... 6 2.02 ABOVEGROUND PIPING SYSTEMS ............................................................................................. 7 2.03 BACKFLOW ASSEMBLIES............................................................................................................. 9 2.04 DRY PIPE VALVE.......................................................................................................................... 10 2.05 AUTOMATIC AIR COMPRESSOR ................................................................................................ 10 2.06 PREACTION VALVE ..................................................................................................................... 10 2.07 DETECTION SYSTEM ................................................................................................................... 10 2.08 MANUAL RELEASE STATION..................................................................................................... 10 2.09 SPRINKLER HEADS ...................................................................................................................... 11 2.10 VALVES: ........................................................................................................................................ 11 2.11 FIRE DEPARTMENT CONNECTION ............................................................................................ 11 2.12 ALARMS ........................................................................................................................................ 11 2.13 CABINET ........................................................................................................................................ 12 2.14 STANDPIPE VALVES .................................................................................................................... 12 PART 3 - EXECUTION .................................................................................................................................. 12 3.01 INSTALLATION............................................................................................................................. 12 3.02 FIELD CHANGES .......................................................................................................................... 12 3.03 CONNECTIONS TO EXISTING SPRINKLER SYSTEM ............................................................... 12 3.04 FIELD PAINTING .......................................................................................................................... 12 3.05 FIELD TESTING AND FLUSHING................................................................................................ 13 END SECTION 211316 .................................................................................................................................. 14

DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - i

EDITING NOTE

    All bracketed blanks, words, phrases, sentences, and paragraphs in this specification require the editor to either

    include or delete the bracketed section, or provide required information.

DRY PIPE AND PREACTION SPRINKLER SYSTEM - SECTION 211316

    PART 1 - GENERAL

    1.01 RELATED DOCUMENTS

    A. Drawings and general provisions of the Contract, including General and Supplementary Conditions

    and Division 1 Specification Sections, apply to this Section.

    B. The following sections apply to the work of this section:

    1. 211100 Exterior Water Supply Main

    2. 078413 Penetration Firestopping

    3. 238111 Fire Detection and Alarm Systems

    4. 211000 Fire Protection General Requirements

    5. 213110 Fire Pump Systems 1.02 SUMMARY

    A. Scope: Provide a complete dry-pipe [preaction] sprinkler system, and associated equipment, ready

    for operation.

    B. The work includes designing and [modifying][installing] an automatic dry-pipe [preaction]fire

    extinguishing sprinkler system for [[Ordinary Hazard II] [Extra Hazard - Group [I] [II]] and uniform

    distribution of water by hydraulic design to afford complete fire protection coverage throughout the

    contract area.

    C. Existing Sprinkler Equipment: Existing sprinkler equipment shall be maintained fully operational

    until the new equipment has been tested and accepted by the COTR and OSHEM fire protection

    engineer. [After acceptance of the new equipment, all existing equipment so indicated shall be

    removed.]]

    D. Authority Having Jurisdiction: Any reference in the specifications or applicable codes to the

    "authority having jurisdiction" shall be interpreted to mean the OSHEM Fire Protection Engineer.

1.03 ALLOWANCES

    [List Allowances, if included as part of the contract. Confirm with OSHEM and COTR]

1.04 UNIT PRICES

    [List Unit Prices, if included as part of the contract. Confirm with OSHEM and COTR]

    1.05 DEFINITIONS

    A. COTR: Contracting Officer Technical Representative

    B. FM: FM Global (Factory Mutual)

    C. FPE: Fire Protection Engineer

    D. Furnish: To supply the stated equipment or materials

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 1

E. Install: To set in position and connect or adjust for use

    F. NFPA: National Fire Protection Association

    G. NICET: National Institute for Certification in Engineering Technologies H. OSHEM: Office of Safety Health and Environmental Management

    I. Provide: To furnish and install the stated equipment or materials

    J. UL: Underwriters Laboratories

    1.06 SYSTEM DESCRIPTION:

    A. The design shall conform to NFPA 13 and the requirements specified herein. Design of the

    automatic dry-pipe (preaction) sprinkler system shall be for [[Ordinary Hazard II] [Extra Hazard -

    Group [I] [II]] occupancy by hydraulic calculation. The design, equipment, materials, installation,

    workmanship, examination, inspection and testing shall be in strict accordance with NFPA 13,

    except as modified herein.

    B. The system shall include all materials, accessories, and equipment inside and outside the building to

    provide a system complete and ready for use. Refer to Section 211100 for Installation of Exterior

    Water Supply Main for Fire Protection Service.

    C. Design and provide each system giving full consideration to blind spaces, piping, electrical

    equipment, duct work and other construction and equipment in accordance with detailed drawings to

    be submitted for approval.

    D. Equipment for fire protection service shall be UL listed or FM approved for use in wet pipe sprinkler

    systems.

    E. In the NFPA publications referred to herein, the advisory provisions shall be considered mandatory,

    as though the word "shall" had been substituted for "should," wherever it appears.

    1.07 PERFORMANCE REQUIREMENTS

    A. Water Distribution: Distribution shall be uniform throughout the area which it is assumed the

    sprinkler heads will open. Variation in discharge from individual heads in the hydraulically most

    remote area shall be between 100 and 120 percent of the specified density. B. Piping Restrictions: Piping is prohibited in the following areas, except when solely supplying

    sprinklers in such areas:

    1. Transformer, switchgear, or similar rooms

    2. Elevator machine rooms and elevator shafts.

    3. IT Computer spaces (mission critical).

    4. Collection storage rooms.

    C. Clearance From Electrical Equipment: Piping and automatic sprinklers are prohibited directly over:

    1. Transformers.

    2. Substations.

    3. Switchboards.

    4. Motor control centers.

    5. Emergency generators.

    6. Bus Ducts.

    7. Electrical panels.

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 2

    D. If installing pipe over electrical equipment is unavoidable, provide drip pans under piping to protect

    electrical equipment.

    E. In seismic design categories D, E, & F sprinkler systems shall be designed for earthquake protection

    in accordance with the requirements and recommendations of NFPA 13.

    F. Location of Sprinkler Heads: Heads in relation to the ceiling and the spacing of sprinkler heads shall

    not exceed their listed area of coverage for [[Ordinary Hazard II] [Extra Hazard - Group [I] [II]].

    Uniformly space sprinklers on the branch piping. Locate sprinkler heads in a consistent pattern with

    ceiling grid, lights, and supply air diffusers.

    G. Sprinkler Discharge Area: The sprinkler discharge area shall be the hydraulically most remote areas

    as defined in NFPA 13. Remote area reductions permitted per NFPA 13 shall not apply.

    H. Hose Allowances: System design shall include an allowance of 100 gpm (6.31 l/s) for inside hose

    stream, and 250 gpm (15.77 l/s) for total combined inside and outside hose streams.

    I. Hydraulic Calculations: Hydraulic calculations shall be in conformance with NFPA 13 and the

    following requirements:

    1. Water Supply: [Base hydraulic calculations on a static pressure of ____ psi (kPa) with ____

    gpm (LPM) available at a residual pressure of ____psi (kPa) at __________________.] [The

    Contractor shall determine the characteristics of the water supply and if necessary, conduct

    appropriate flow tests at their expense.] [Provide a copy of the most recent waterflow test with

    the hydraulic calculations. Water supply test may be no more than 10 months old when used for

    hydraulic calculations.]

    2. Margin of Safety: The sprinkler system shall be hydraulically designed so that the total

    waterflow and pressure demand is at least 10% less than the available water flow and pressure

    at the site.

    3. Friction Losses: Calculate losses in piping in accordance with the Hazen-Williams formula

    with "C" value of 100 for unlined ductile iron piping, 120 for steel piping, 140 for cement-lined

    ductile-iron piping, 150 for copper tubing and plastic piping.

    4. Flow Velocity: Piping shall be sized so that the water flow velocity does not exceed 20 ft/sec

    (6.1 m/s) at any point in the system during maximum water flow (including inside hose

    demand). Flow velocity in each pipe segment is to be provided in the calculations.

    5. Test Point: Calculations shall be brought back to the flow test point.

    6. Area of Coverage and Density: The area of coverage and density for each sprinkler shall be

    provided in the calculations.

    7. Equivalent Lengths: The equivalent lengths for all types of fitting and valve used shall be

    provided.

    8. Supply and Demand Graph(s): A graph comparing the water supply and the sprinkler and hose

    stream demand for each remote area shall be provided. Pressure and flow values for the supply 1.85 graph paper. and demand curves are to be provided on N

    1.08 SUBMITTALS

    A. Partial submittals will not be acceptable. Any installation work performed prior to the approval of

    the submittal shall be at the Contractor’s own risk.

    B. Before any work is commenced, submit manufacturer's data (with listing or approval), system

    calculations, [water supply data,] and complete sets of working drawings.

    C. The OSHEM Fire Protection Engineer shall review and approve submittals.

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 3

    D. Manufacturers' Data: Annotate descriptive data to show the specific model, type and size of each item the Contractor proposes to furnish. Include data for proper installation of each system including: 1. Pipe and fittings

    2. Dry pipe valves

    3. Preaction valves

    4. Gate and check valves

    5. Globe valves

    6. Backflow preventers

    7. Water motor alarms

    8. Sprinkler heads

    9. Pipe hangers and supports

    10. Pressure and waterflow switches

    11. Tamper switches

    12. Inspector's test station

    13. Retard chamber

    14. Ball drip

    15. Fire department connections

    16. Lubricating compound/PTFE tape.

    17. Signs

    18. Caps, chains

    19. Cabinets

    20. Hose valves

    21. Drip pans

    22. Air Compressor

    E. Shop Drawings: Prepare working drawings on sheets not smaller than 24 in by 36 in (610 mm by 914 mm), in accordance with the requirements for "Working Plans" as specified in NFPA 13. A scaled site plan, with the location and elevation of the water flow test, shall be provided on the drawings. [Drawings are to include isometric diagram of sprinkler risers and feed mains, including all control valves.]

    F. As-Built (Record) Working Drawings: On a weekly basis, the Contractor Superintendent, in conjunction with the COTR, shall review and record as-built conditions on a set of drawings maintained at the job site. After completion, but before final acceptance of the work, furnish a complete set of as-built drawings for review and approval by OSHEM. Make all necessary corrections to the drawings and furnish four sets of as-built drawings for record purposes. All deviations from the approved shop drawings shall be highlighted on the as-built drawings; if required by OSHEM the Contractor shall also provide hydraulic calculations justifying deviations. The drawings shall not be smaller than 24 in by 36 in (610 mm by 914 mm) on reproducible sepia with title block similar to full size contract documents. [Provide 1 compact disc containing CAD based drawings in DXF and PDF based format of all as-built drawings and schematics.]

    G. Operation And Maintenance Manuals: Furnish four (4) instruction manuals containing complete operation and maintenance instructions for the specific make and model of all check valves, detector

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 4

check valves, alarm valves, dry-pipe valve and deluge valve assemblies waterflow and tamper

    switches, backflow preventers, and other trim furnished. Serial numbers and ordering information

    shall be provided. Place one copy of each instruction manual in a flexible, oil-resistant protective

    binder and mount in an accessible location in the vicinity of each dry-pipe or preaction control valve. Furnish three additional copies of each instruction manual.

    1.09 QUALITY ASSURANCE

    A. The publications listed below form a part of this specification to the extent referenced. The

    publications are referred to in the text by the basic designation only. All publications listed below

    refer to the most current edition.

    B. Manufacturers Qualifications

    1. American Society for Testing and Materials (ASTM) Publications:

    a. A53 Pipe, Steel, Black and Hot Dipped, Zinc-Coated, Welded and Seamless

    b. A135 Welded and Seamless Steel Pipe 2. Factory Mutual System (FM) Publications

    a. Approval Guide

    3. National Fire Protection Association (NFPA) Publications

    a. 13 Installation of Sprinkler Systems

    b. 14 Installation of Standpipe and Hose Systems

    c. 70 National Electrical Code

    d. 72 National Fire Alarm Code

    e. 101 Life Safety Code

    f. 291 Fire Flow Testing and Marking of Hydrants

    g. 1963 Fire Hose Connections 4. International Code Council (ICC)

    a. International Building Code 5. Underwriters Laboratories, Inc. (UL) Publications:

    a. Fire Protection Equipment Directory

    b. 262 Gate Valves for Fire Protection Service

    c. 789 Indicator Posts for Fire Protection Service 6. American Society of Mechanical Engineers (ASME)

    a. A17.1 Safety Code for Elevators and Escalators

    C. Qualifications Of Installer:

    1. Prior to installation, submit data for approval by OSHEM, showing that the Contractor has

    successfully installed automatic, wet pipe, fire extinguishing sprinkler systems of at least 200

    sprinkler heads each, or there is a firm contractual agreement with a subcontractor having such

    required experience. These systems shall be the same type and design which have been

    retrofitted into existing museums and historical buildings as specified herein. The data shall

    include the names and locations of at least two installations where the Contractor, or the

    subcontractor referred to above, has installed such systems. The Contractor shall indicate the

    type and design of each system and certify that each system has performed satisfactorily in the

    manner intended for a period of not less than 18 months.

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 5

    2. Design (including hydraulic calculations) shall be by a NICET Level III or IV Technician (in

    automatic sprinkler system design) or a Professional Engineer (P.E.), licensed in Fire Protection

    Engineering. Qualifications of the designer must be submitted to OSHEM for approval. D. Service Organization: The Contractor shall furnish, to the COTR, evidence that there is an

    experienced and effective service organization which carries a stock of repair parts for the system in

    order to readily effect repairs throughout the warranty period. Should the Contractor fail to comply

    with the service requirements of this section, the Government will then have the option to make the

    necessary repairs and back charge the Contractor without any loss of warranty or guarantee as

    provided by the contract documents.

    1.10 DELIVERY STORAGE AND HANDLING

    A. Deliver products to project site in original, unopened packages with intact and legible manufacturers’

    labels identifying product and manufacturer, date of manufacture, and shelf life if applicable. B. Store materials inside, under cover, above ground, and kept dry and protected from physical damage

    until ready for use. Remove from site and discard wet or damaged materials. C. Automatic sprinklers must be kept in original packaging until they are installed. Loose carrying or

    storage is not permitted. Loose sprinklers shall be discarded immediately and replaced at

    Contractor’s expense

    1.11 PROJECT CONDITIONS

    [List any special project conditions and/or environmental limitations on system installation, such as

    temperature, humidity, ventilation, etc.]

    1.12 COORDINATION

    A. Coordinate sprinkler head layout with reflected ceiling plan and all ceiling mounted equipment,

    including diffusers, lights, security cameras, fire alarm devices, exit signs, and other devices. B. Coordinate major equipments and piping layouts with other trades to avoid obstructions and

    excessive changes in direction for piping.

    1.13 WARRANTY

    A. The Contractor shall guarantee labor, materials, and equipment provided under this contract against

    defects for a period of one year after the date of final acceptance of this work by the Government. B. Final acceptance includes, but is not limited to, the receipt and OSHEM approval of, as-built

    drawings and operation and maintenance manuals.

    PART 2 - PRODUCTS

    2.01 ACCEPTABLE MANUFACTURERS

    A. All products are subject to the following listed acceptable manufacturers. If the product is not

    addressed herein the product shall be from a US based manufacturer and listed for fire protection use. B. All products shall be FM approved/ UL listed.

    C. Double Check Detector Backflow Preventer Assembly

    1. Ames

    2. Watts

    3. Febco

    4. Hersey

    D. Fire Department Connections

    1. Allenco

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 6

    2. Elkhart Brass

    3. Potter-Roemer Inc

    4. Reliable Automatic Sprinkler Co.

    E. Fire Protection Valves and Drain Assemblies

    1. Tyco Fire & Building Products

    2. Victaulic

    3. Stockham

    4. Kennedy

    5. Jenkins

    6. Reliable Automatic Sprinkler Co.

    7. Viking Corporation

    F. Sprinklers

    1. Tyco Fire & Building Products

    2. Reliable Automatic Sprinkler Co.

    3. Viking Corporation

    4. Victaulic Corporation

    G. Valve Supervisory Switches

    1. Potter Electric Signal

    2. System Sensor

    3. McWane, In. Kennedy Valve Div.

    2.02 ABOVEGROUND PIPING SYSTEMS

    A. Provide fittings for changes in direction of piping and for all connections. Arrange piping so that it

    can be drained at the main riser. Make changes in piping sizes through standard tapered, reducing

    pipe fittings; the use of bushings will not be permitted. Perform welding in the shop; field welding

    will not be permitted.

    B. Jointing compound for pipe threads shall be polytetrafluoroethylene (PTFE) pipe thread tape only;

    apply on male threads. Pipe dope may not be used.

    C. Lubricant used on gaskets for mechanical fittings must be non-petroleum based and approved by

    OSHEM.

    D. Run piping concealed in areas with suspended ceilings, except as noted on the drawings. E. Sprinkler Pipe and Fittings: Provide in accordance with NFPA 13, except as modified herein. Steel

    piping shall be Schedule 40 per ASTM A53 for sizes less than 4 inches (101.6 mm) and Schedule 10

    or 40 per ASTM A53 for sizes 4 inches(101.6 mm) and larger. ASTM A135, Schedule 40 piping

    may be used for pipe sizes less than 2 ? inches (63.5 mm).

    1. Standard Installation:

    a. Nominal pipe sizes 4 inches or larger: Schedule 10 or 40 Pipe meeting ASTM A-53, A-135

    or A-795 with factory- or field-formed, roll-grooved for Schedule 10 or 40 ends, or cut-

    grooved for Schedule 40 ends.

    b. For connections between 4 inch and larger pipes the requirements are as follows.

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 7

    1) Grooved pipe couplings and fittings for grooved pipe.

    2) Outlet coupling with screwed connection for grooved pipe. c. For connection between 4 inch and larger pipes to pipes smaller than 4 inches the

    requirement is as follows.

    1) Welded outlet with screwed connection or threaded coupling or fittings. d. Nominal pipe sizes smaller than 4-inches: Schedule 40 Pipe meeting ASTM A-53, A-135,

    and A-795 with factory- or field-formed threaded ends: e. For connections to and between pipes less than 4 inches the requirement is as follows.

    1) Threaded pipe couplings and fittings only. 2. Animal Holding Area/Keeper Areas:

    a. Nominal pipe sizes 4-inches or larger: Schedule 10 or 40 Pipe meeting ASTM A-53, A-135

    or A-795, hot-dip galvanized and with factory- or field-formed, roll-grooved for Schedule

    10 or 40 ends, or cut-grooved for Schedule 40 ends.

    b. For connections between 4 inch and larger pipes the requirements are as follows.

    1) Galvanized grooved pipe couplings and fittings for grooved pipe.

    2) Galvanized outlet coupling with screwed connection for grooved pipe. c. For connection between 4 inch or larger pipes to pipes smaller than 4 inches (100 mm) the

    requirement is as follows.

    1) Galvanized welded outlet with screwed connection or threaded coupling or fittings. d. Nominal pipe sizes smaller than 4-inches: Schedule 40 Pipe meeting ASTM A-53, A-135,

    and A-795 hot-dip galvanized and with factory- or field-formed threaded ends: e. For connections to and between pipes less than 4 inches the requirement is as follows.

    1) Galvanized threaded pipe couplings and fittings only. 3. Underground piping: All underground pipes shall be centrifugally cast ductile iron.

    4. Pressure ratings: Pressure ratings of all fittings and gaskets shall meet or exceed maximum

    working pressures available within the system.

    5. Corrosion protection: All piping and hangers where exposed to the weather or installed in a

    corrosive atmosphere shall be protected against corrosion.

    6. Pipe and Hanger Supports: Provide pipe supports, hangers, and clamps conforming to NFPA 13

    and listed by UL or approved by FM. Provide galvanized supports, hangers, and clamps for all

    galvanized piping.

    7. Joint Construction

    a. Branch outlet mechanical fittings and clamp type fittings are not permitted. b. Procedures for welding outlets shall be in strict conformance with the welding

    requirements of NFPA 13, including submission of welding certifications. Welding shall

    not be performed on site.

    c. Threaded Joints: Comply with NFPA 13 for pipe thickness and threads. Do not thread

    pipe with wall thickness less than Schedule 40.

    d. Grooved Joints and Fittings: Assemble joints and fittings with listed coupling and gasket,

    lubricant, and bolts from same manufacturer. Fittings and attached couplings shall be

    from the same manufacturer.

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 8

    e. Steel Pipe: Square-cut or roll-groove piping as indicated. Use grooved-end fittings and

    rigid, grooved-end-pipe couplings, unless otherwise indicated.

    f. If the galvanized coating on piping is found to be chipped or cracked upon grooving of

    joint, two coats of liquid galvanizing material shall be applied to groove. The first coat

    shall be thoroughly dry prior to applying the second coat. F. Rubber-gasketed, grooved-end pipe and fittings with mechanical couplings shall only be permitted in

    pipe sizes 4 inches (101.6 mm) and larger.

    G. Use of restriction orifices, reducing flanges, unions, and plain-end fittings will not be permitted. H. The corrosion resistance ratio of pipe and fitting method shall not be less than 0.95.

    I. Pipe Hangers and Supports: Provide in accordance with NFPA 13.

    J. Identification Signs: Attach properly lettered approved metal or polycarbonate signs conforming to

    NFPA 13 to each valve and alarm device. Polycarbonate signs shall be red with engraved white

    letters. Signs at valves shall describe the sprinkler zone it controls and state that the valve is to

    remain open. Permanently affix design data nameplate to the riser of each system.

    K. Inspector's Test Connection: Provide test connections no higher than 6 ft (1.83)m above the floor for

    each sprinkler system or portion of each sprinkler system equipped with an alarm device; locate at

    the [hydraulically most remote part of each system and at the] control valve/drain assembly. Provide

    combination drain valve and test connection. Discharge shall be readily visible from the inspector's

    test connection, either by direct observation of the discharge or through a sight glass. Discharge

    shall be piped to either an open building drain or to the outside. Drainage and test valves shall be

    bronze globe, angle, or gate valves.

    L. Drains: Provide drain piping to discharge at safe points outside the building or to sight cones

    attached to drains of adequate size to readily receive the full flow from each drain under maximum

    pressure. All drain piping is to be galvanized. Provide auxiliary drains as required by NFPA 13.

    Splash guards are to be provided where necessary at discharge outlets.

    M. Pipe Sleeves and Seals. Provide where conduit or piping passes through walls, floors, roofs and

    partitions. Provide clearance between exterior of piping and interior of sleeve in accordance with

    NFPA 13. See Section 078413 Penetration Firestopping, for sleeves and seals through fire-rated

    assemblies. Secure sleeves in proper position and location during construction. Provide sleeves of

    sufficient length to pass through the entire thickness of walls, floors, roofs, and partitions.

    1. Sleeves in Masonry and Concrete Walls, Floors, and Roofs: Provide ASTM A53, Schedule 40,

    zinc-coated steel pipe sleeves. Sleeves in floors shall project 4 inches (101.6 mm) above

    finished floors to prevent seepage.

    2. Sleeves in Partitions and Other than Masonry and Concrete Walls, Floors and Roofs: Sleeves

    shall be constructed from either zinc-coated schedule 40 steel pipe or zinc-coated 26 gauge steel

    sheet.

    N. Escutcheon Plates: Provide one piece or split-hinge-type metal plates for piping passing through

    floor, walls, and ceilings in exposed and concealed areas. Provide chromium-plated or color-

    coordinated metal plates where pipe passes through finished ceilings. Securely anchor plates in

    proper position. Provide sprinkler escutcheon plates to match sprinkler head finish.

    2.03 BACKFLOW ASSEMBLIES

    A. Backflow assemblies installed in buildings within the limits of Washington DC shall comply with

    DC Water and Sewer Authority (DC WASA) and ASSE 1048 requirements. Backflow preventers

    outside of Washington DC shall comply with the requirements of the local water authority.

    DRY PIPE AND PREACTION SPRINKLER SYSTEM Revision 0, May 29, 2009 211316 - 9

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