CONSTRUCTION STANDARD SPECIFICATION

SECTION 15311

[PREFABRICATED OFFICE COMPLEX AUTOMATIC SPRINKLER SYSTEM]{.underline}

[Page]{.underline}

PART 1 - GENERAL

[1.01 Summary 2](#summary)

[1.02 References 2](#references)

[1.03 System Description 3](#system-description)

[1.04 Submittals 5](#submittals)

[1.05 Quality Assurance 8](#quality-assurance)

#### PART 2 - PRODUCTS

[2.01 Materials 8](#materials)

[2.02 Sprinklers 8](#sprinklers)

[2.03 Pipe 9](#pipe)

[2.04 Pipe Fittings 10](#pipe-fittings)

[2.05 Pipe Hangers And Supports 10](#pipe-hangers-and-supports)

[2.06 Fire Protection Check Valves 11](#fire-protection-check-valves)

[2.07 Fire Protection Interior Control Valves
11](#fire-protection-interior-control-valves)

[2.08 Supervisory Devices 11](#supervisory-devices)

[2.09 Fire Department Connections 12](#fire-department-connections)

#### PART 3 - EXECUTION

[3.01 Installation 12](#installation)

[3.02 Sprinkler Main System Riser 15](#sprinkler-main-system-riser)

[3.03 Sprinklers 15](#sprinklers-1)

[3.04 Drains 16](#drains)

[3.05 Fire Department Connections 16](#fire-department-connections-1)

[3.06 Identification 17](#identification)

[3.07 Flushing 17](#flushing)

[3.08 Testing 18](#testing)

[3.09 Protection Against Freezing 18](#protection-against-freezing)

[3.10 Protection For Backflow Prevention
18](#protection-for-backflow-prevention)

[3.11 Painting And Labeling 19](#painting-and-labeling)

[3.12 Disinfection 20](#disinfection)

#### PART 4 - CADD SOFTWARE GUIDELINES FOR DRAWING SUBMITTALS

[4.01 MicroStation J 21](#microstation-j)

[4.02 AutoCAD 21](#autocad)

#### PART 5 - ATTACHMENTS

[5.01 Attachment 1 -- Shotgun Riser Detail
22](#attachment-1-shotgun-riser-detail)

CONSTRUCTION SPECIAL SPECIFICATION

SECTION 15311

[PREFABRICATED OFFICE COMPLEX AUTOMATIC SPRINKLER SYSTEM]{.underline}

## [PART 1 - GENERAL]{.underline}

## 1.01 SUMMARY

A.  This specification, in conjunction with the contract documents and
    drawings, indicates the materials and operations required for the
    design and installation of a wet-pipe automatic sprinkler system in
    prefabricated office complexes. Requirements are included for the
    design and installation of fire protection systems, shop drawings,
    equipment, pipe, pipe fittings, valves, check valves, backflow
    prevention devices, alarm initiation and supervisory devices, fire
    department connections, sprinkler systems, operating instructions,
    identification, tests, and disinfecting of piping.

B.  This specification applies to all fire protection piping downstream
    of the flanged stub-up at the base of the sprinkler riser, unless
    otherwise noted on the contract drawings.

C.  Any variation, clarification or apparent conflict from within this
    specification shall be submitted to the Sandia Delegated
    Representative (SDR).

## 1.02 REFERENCES

A.  Sandia National Laboratories (Sandia/NM) Standard Specifications

> 01065 ES&H for Construction & Maintenance Contracts
>
> 01330 Submittal Procedures
>
> 02200 Earthwork
>
> 02665 Underground Water Lines for Domestic and Fire Protection Systems
>
> 09900 Painting
>
> 15050 Basic Mechanical Materials and Methods
>
> 15994 Mechanical Systems Demonstration

D.  

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B.  American Public Health Association (APHA)

> Standard Methods for the Examination of Water and Wastewater

E.  American Water Works Association Standard Specifications (AWWA)

> C500 Metal-Seated Gate Valves for Water Supply Service
>
> C651 Disinfecting Water Mains
>
> Manual M14 Recommended Practice for Backflow Prevention and Cross
> Connection Control

F.  
G.  
H.  

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3.  

4.  A.  

    B.  

    C.  

    D.  

    E.  

    F.  

    G.  National Fire Protection Association (NFPA)

> NFPA 13 Standard for the Installation of Sprinkler Systems

H.  Underwriters\' Laboratories, Inc. (UL)

> Fire Protection Equipment Directory

F.  Reflected Ceiling Plan (to be included with the Contract Package)

G.  Floor Plan (to be included with the Contract Package)

H.  Site Plan showing location of riser (to be included with the
    Contract Package)

## 1.03 SYSTEM DESCRIPTION

A.  Designer Requirements

    1.  The designer of the fire protection systems shall meet one of
        the requirements below.

        a.  A registered Professional Fire Protection Engineer in the
            State of New Mexico.

        b.  Minimum National Institute for Certification in Engineering
            Technologies (NICET) Level III for wet-pipe, Light Hazard
            Sprinkler Systems, regardless of size.

        c.  Where NICET design is used, copies of the designer\'s
            certificates from NICET shall be submitted along with the
            drawings for approval. The registered Professional Engineer
            shall stamp all other plans.

    2.  The contractor shall produce design drawings (design files) that
        indicate the extent and arrangement of the automatic sprinkler
        system.

    3.  Unless indicated in the contract, drawing(s) refers to the
        plotted hard copy document or print and the electronic computer
        aided drafting design (CADD) file.

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A.  Design Criteria

    1.  The Designer is responsible for the design and installation of a
        wet-pipe automatic sprinkler system in accordance with these
        specifications and the requirements in NFPA 13. The contractor
        shall coordinate with architectural, civil, mechanical, and
        electrical, design and construction documents, to ascertain the
        required information, to properly design and install an
        automatic sprinkler system for the prefabricated office complex.

    2.  The design of the automatic sprinkler system shall be complete
        with all necessary accessories for proper operation.

    3.  The fire protection water supply lines, controlling devices,
        protective devices, alarm systems, supervisory devices, and
        related equipment shall be compatible so that all equipment will
        function together as specified.

    4.  Light Hazard design criteria:

        a.  Office space shall be designed for Light Hazard, Business
            occupancy.

        b.  Sprinkler density (gpm/ft^2^) -- 0.10

        c.  Area of Application (ft^2^) -- 1,500.

        d.  Sprinkler orifice, temperature -- ½-in., 155°F QR.

    5.  Ordinary Hazard design criteria:

        a.  Prefabricated office complexes with lab space shall be
            designed for Ordinary Hazard, Group II, Business occupancy.

        b.  Sprinkler density (gpm/ft^2^) -- 0.17

        c.  Area of Application (ft^2^) -- 3,000.

        d.  Sprinkler orifice, temperature -- ½-in., 155°F QR.

    6.  Hydraulic design shall be as follows:

        a.  The design area shall be the hydraulically most demanding
            \"rectangular area\" having a dimension parallel to the
            branch lines equal to 1.4 times the square root of the area
            of sprinkler operation.

        b.  Where the design area includes a corridor protected by a
            single row of sprinklers, the maximum number of sprinklers
            that need be calculated is 7, when openings into the
            corridor are unprotected by fire rated construction. When
            openings into the corridor are protected, the maximum number
            of sprinklers that need to be calculated is 5.

        c.  Maximum waterflow velocity shall not exceed 20-feet per
            second (6-m/s) in any sprinkler system piping of
            hydraulically designed systems.

        d.  Hydraulic design shall be based upon the water supply data
            shown on information supplied by the SDR. The water supply
            data curve shall be based upon 85% of the available water
            supply as tested.

        e.  Hydraulic calculations shall be performed using an Sandia/NM
            approved (Firecad, HAAS, HydraCalc, Hydronics, HyperCalc,
            THE, Water, etc.) computer program. Hand calculations or
            calculations on spreadsheets will not be accepted. All
            calculation programs shall use the Hazen-Williams
            calculation method. Utilize the C Factors in NFPA 13 for the
            hydraulic calculations.

            Hydraulic calculations shall include the following adjusted
            C Factors when using new or existing pipe for sprinkler
            systems and exterior piping systems.

        f.  Extend all (regardless of job size, and including
            modifications, new installations, retrofits, recalculations,
            etc.) hydraulic calculations back to the effective point of
            connection (ring-main) of the sprinkler lead-in to the fire
            water main supplying the office complex, unless indicated
            otherwise on the contract drawings.

    7.  The distance between sprinklers either on branch lines or
        between branch lines shall not be less than 6 feet distance
        apart.

    8.  Manifolding of sprinkler risers to one single sprinkler lead-in
        shall not be permitted.

B.  Fire department connections shall be as follows:

    1.  Install fire department connections, where show on the drawings.
        Install underground piping, if required, in accordance with
        standard specification 02665, \"Underground Water Lines for
        Domestic and Fire Protection Systems.\"

C.  Exposure protection design shall be as follows.

    1.  A minimum of 3 gpm (11.4-L/Min) per linear feet (0.3-M) using
        ½-inch orifice sprinklers spaced a maximum of 10 feet apart
        horizontally apart shall be calculated. Sprinklers shall be
        high-temperature rated.

    2.  Hydraulic calculations shall include all of the sprinklers
        facing the exposure, on every row.

## 1.04 SUBMITTALS

A.  Provide as required by Specification Section 01330, "Submittal
    Procedures", to the SDR.

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D.  After award of contract and prior to fabrication, Fire Protection
    System Contractor shall submit to the SDR for approval, complete
    design submittals. Design submittals package shall include:

    1.  Paper copies and electronic (if available) of manufacturers\'
        catalog data, system and component operating instructions, and
        paper and electronic copies of hydraulic calculations for the
        sprinkler system and underground piping shown on plot plans.

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    1.  Paper copies and electronic copies of graphic design drawings
        (CADD files) showing any underground piping, office complex fire
        protection floor plans, riser diagram, and any other graphic
        drawings to clearly delineate the design.

    2.  If welded joints are to be used in the sprinkler system
        installation, then the Contractor shall provide a paper copy and
        electronic (if available) of the welding procedure to be used,
        the quality assurance procedure and the welder's qualifications.

E.  No installation will be permitted prior to Sandia/NM Fire Protection
    Engineering approval of the complete shop drawings, calculations,
    and materials submittal.

F.  Electronic Design Submittal

    1.  All manufacturers\' catalog data, system and component operating
        instructions, design drawings, and calculations for the fire
        protection system shall be included in the deliverable file
        package as follows. The fire protection deliverable package,
        both CADD and non-CADD shall be delivered to Sandia in printed
        format (hard copy), quantity to be determined by SDR, in
        addition to one electronic copy. Microsoft Word, Microsoft
        PowerPoint, Microsoft Project, and Microsoft Access are the
        required software (latest versions suitable for Windows/NT) to
        be used. In addition to electronic copies of the bond (paper)
        documentation, the contractor will provide electronic copies of
        all engineered calculated project software in the format
        originally generated (i.e., Firecad, HASS, Hydronics, HyperCalc,
        etc.). Where these software packaged cannot be used, the
        contractor shall produce the documents in portable document file
        (PDF) format, or scanned image in \*.jpg or \*.bmp format. All
        files will be returned with the file name, description/content,
        software and software version requirements listed. All
        deliverable data, designs, records, graphics, and supporting
        tools are the property of Sandia/NM. Sandia/NM also has the
        right to provide any of this information to others, as it deems
        appropriate.

    2.  All graphic design drawings will be plotted CADD files. CADD
        files will follow Sandia/NM File Naming conventions, and utilize
        a Sandia/NM border title block.

    3.  Floor Plans

        a.  All fire protection floor plans will reference architectural
            floor plans.

        b.  Files will be completed at a one-to-one scale.

        c.  The contractor will identify location of post indicator
            valve (PIV) and Fire Department Connection that are attached
            to the office complex.

        d.  Each floor will be a single file (i.e., MicroStation --
            Master Floor Plan, or AutoCAD -- Model File).

        e.  Orientation of North, key play breakout will match
            architectural construction of floor plans.

        f.  Unless otherwise specified, new floor plans and full height
            cross sections shall be plotted at ¼\"=1\' 0\".

    4.  Riser Diagram

        a.  Riser will be detailed in nature showing each fire
            protection component. Each component will be labeled, at a
            minimum with description, size, and equipment part and
            manufacturer information.

        b.  Riser details will show at a minimum all components from the
            PIV and Fire Department Connection up to top of the riser.
            Riser will be to scale, or dimensions shall be shown
            indicating height and distances between components.

    5.  Site Plans: The contractor will verify location on the
        construction site plans of PIV, fire department connection, and
        hydrants that are not attached to the office complex.

    6.  All requirements listed under submittals apply regardless of use
        of MicroStation or AutoCAD.

G.  CADD Drawings: Sandia/NM Facilities maintains MicroStation J for
    Windows/NT, as its standard CADD software. Refer to the requirements
    in Part 4 for CADD drawing submittals.

H.  As-Built Drawings:

    1.  Upon completion of the installation, the Contractor shall revise
        all Fire Protection Design files, calculations, manuals,
        operating instructions to agree with the construction as
        actually accomplished. The notation \"As-Built\" shall be
        entered in the revision block, dated and initialed. All as-built
        records will follow the requirements listed under 1.05
        Submittals.

    2.  Fire Protection Design files must be requested from Sandia/NM
        prior to as-builts. As-builts will reflected on the existing
        design file records.

    3.  The as-built files, whether on new or original contract shall
        show the entire sprinkler system, existing and new construction,
        as it exists at the completion of the contract work. Delete all
        references to \"new work,\" \"existing,\" \"NIC,\" etc.

    4.  As-built submittals shall be submitted to the Sandia/NM SDR
        prior to the final acceptance testing. This delivery shall
        include BOTH electronic and hard copies.

    5.  Final hydraulic calculations shall reflect the \"As-Built\"
        condition. These calculations must be submitted before final
        acceptance testing by Sandia/NM.

## 1.05 QUALITY ASSURANCE

A.  General: Where specific manufacturers or model numbers are mentioned
    in these specifications, proposed substitutions shall be included in
    the submittal package furnished to the Sandia Delegated
    Representative (SDR) for approval after contract award and before
    installation.

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A.  Warranty: All sprinkler system components furnished under this
    contract shall be guaranteed against defective design, materials,
    and workmanship for the full warranty time, which is standard with
    the manufacturer and/or supplier. Refer to contract requirements. In
    no case shall the warranty be less than one year from the date of
    system acceptance.

## [PART 2 - PRODUCTS]{.underline}

## 2.01 MATERIALS

A.  Materials and equipment used in the installation of the sprinkler
    system shall be new and listed by the UL Fire Protection Equipment
    Directory or the FM Approval Guide, latest edition. The standard
    products and the latest design of the manufacturer shall be used,
    and installed per their listing, approval, or manufacturer
    recommendations. All products listed or approved by prior editions
    of the UL Directory of FM Approval Guide will not be acceptable, if
    not listed or approved in the most recent edition of the directory
    or approval guide.

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I.  Where two or more units of the same class of equipment are required,
    these units shall be products of the same manufacturer (e.g.,
    couplings shall be from one manufacturer.) All materials shall be
    installed per their listing or approval and per the manufacturer\'s
    recommendations and specifications.

J.  Tape for screwed joints shall be minimum, 3 mil., ½-inch wide.

K.  Corrosion protection tape shall be Scotchwrap 51, manufactured by 3M
    Company or approved equivalent.

## 2.02 SPRINKLERS

A.  Types:

    1.  Unless otherwise specified, allowed per other sections of this
        document, or shown on the drawings, sprinklers shall be nominal,
        1/2-inch orifice, automatic, closed-head sprinklers rated at
        155o F (68o C) Quick Response, frangible bulb type fusible
        element.

    2.  Higher temperature rated sprinklers shall be installed where
        heads are exposed to high ambient temperature, exposed to the
        direct rays of the sun, installed in the vicinity of heating
        equipment, or in attics. The sprinkler temperature chosen shall
        be a minimum of 50º F above the maximum ambient temperature, and
        no greater than 100º F above the ambient conditions, unless
        specifically directed by NFPA 13.

    3.  Quick Response (QR) sprinklers, where specified on the drawings,
        shall have a Response Time Index (RTI) of 50 or less in English
        units and 28 or less in metric units.

    4.  Sidewall sprinklers shall be Underwriters\' Laboratories listed
        or Factory Mutual approved for Light Hazard Occupancy.

    5.  Extended coverage sprinklers are not allowed.

    6.  Only sprinklers with a \"Belleville\" type seal shall be used.
        No O-Ring sealed sprinklers shall be allowed either in \"crush\"
        seals or \"radial\" seal styles. Sprinklers shall be of all
        brass frame construction with a coated metal to metal seating
        mechanism.

    7.  Sprinklers in unheated areas (e.g., vestibules) shall be dry
        sidewall type or dry pendant type.

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B.  Position and Finish

    1.  Sprinklers installed on exposed piping shall be manufacturer\'s
        standard finish pendent sprinklers. Sprinklers and escutcheons
        installed below dropped ceilings shall have a finish matching
        the color of the ceiling tile. Only factory applied finishes
        shall be acceptable. If the factory has a finish that cannot
        match the ceiling tile color, standard finish sprinklers are
        allowed.

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    1.  In rooms where sprinkler heads penetrate a suspended ceiling,
        only quick response, semi-recessed or recessed sprinklers are
        acceptable. Standard pendant sprinklers with \"cup and skirt\"
        escutcheons, one-piece escutcheons, or flush or concealed
        sprinklers are not allowed.

        a.  EXCEPTION: On existing installations only, where sprinkler
            head relocations or small modifications (less than 20 heads)
            take place, the new sprinklers and escutcheons shall match
            the existing sprinklers.

    2.  Escutcheons, head guards, and water shields from the supplied
        sprinkler manufacturer shall be used solely with the installed
        sprinkler. No after market escutcheons, head guards, or water
        shields are allowed.

    3.  Head guards shall be two-piece, universal attachments, bolted in
        place on the sprinkler. \"Snap-on\" one-piece units are not
        allowed.

## 2.03 PIPE

A.  Pipe for installation above ground shall conform to the requirements
    of NFPA 13. Pipe shall be listed by UL and be FM approved, and
    installed per its listing and approval and meet the following
    requirements:

    1.  Unless otherwise specified, the minimum steel pipe wall
        thickness shall be Schedule 10 for pipe sizes 1¼ inches or
        larger. Pipe sizes smaller than 1¼ inches shall be Schedule 40.
        Threaded or cut groove steel pipe shall be Schedule 40 for sizes
        less than 8 inches and a minimum of Schedule 30 in sizes 8
        inches and larger for pressures up to 300 psi (2.1-MPa.)

    2.  Mechanical rolled groove pipe or welded pipe shall be a minimum
        of Schedule 10 for sizes 1¼ inches up to 5 inches, 0.134-inch
        wall thickness for 6 inches, and 0.188-inch wall thickness for
        8- and 10-inch pipe for pressures up to 300-psi (2.1-MPa.)

    3.  Steel pipe from drain line valves and inspector\'s test valves,
        and where pipe is exposed to outdoor weather, etc., shall be
        internally and externally galvanized. Galvanized fittings are
        required where galvanized piping is used.

## 2.04 PIPE FITTINGS

A.  Pipe fittings for installation above ground shall conform to the
    requirements of NFPA 13 and shall be FM approved or UL listed.

    1.  Mechanical groove couplings are required on all 4 inches and
        larger pipe.

    2.  Plain-end pipe couplings shall not be used in any new
        installation.

    3.  Galvanized pipe fittings shall be installed where galvanized
        piping is specified.

    4.  Welded branch outlet fittings (weld-o-lets, groove-o-lets,
        thread-o-lets, etc) shall be minimum Schedule 10 for pipe sizes
        1¼ inches or larger. Pipe sizes smaller than 1¼ inches shall be
        Schedule 40 standard wall pipe thickness. Welded outlets shall
        UL listed or FM approved, affixed with the UL or FM
        identification stamps, and pressure rated for 300-PSI maximum.

    5.  Adjustable, two-piece drop nipples shall not be used. All drop
        nipples shall be one-piece, non-adjustable units with a minimum
        1-inch diameter.

## 2.05 PIPE HANGERS AND SUPPORTS

A.  Pipe hangers, and hangar assemblies shall be UL listed or FM
    approved.

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C.  C-clamps and beam clamps shall have lock nuts and pipe rings shall
    be of the solid-band adjustable swivel type.

D.  Provide rod ceiling plates at finished ceilings for coach screw
    rods, expansion shields, and toggle hangers.

E.  When fastening hangars to purlins, bolt-through fastening methods
    shall be used. Beam clamps with restraining straps shall not be used
    in any circumstance.

## 2.06 FIRE PROTECTION CHECK VALVES

A.  Check valves in sprinkler system shall be UL listed or FM approved,
    have hand hole covers to provide adequate access to facilitate
    inspection and repair, without the removal of the valve from the
    system, and shall be listed for installation in the vertical or
    horizontal position. Wafer check valves are unacceptable. All check
    valves shall have a working water pressure of 250 PSI.

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L.  Backflow prevention devices shall be installed on all sprinkler
    systems at Sandia/NM as follows, please see section 3.12 for further
    guidance.

    1.  A double check valve backflow prevention assembly shall be
        installed to prevent cross-connection contamination between
        potable water systems and any fire sprinkler system, at the
        service connection for the fire sprinkler system.

## 2.07 FIRE PROTECTION INTERIOR CONTROL VALVES

A.  Each system shall have interior control valves as follows:

    1.  All control valves 2½ inches or larger shall be provided with an
        electric valve supervision device, connected to the office
        complex fire alarm system.

    2.  All control valves shall be OS&Y. Butterfly valves are not
        permitted, unless directed by Sandia/NM on the drawings. Valves
        shall be manufactured in accordance with AWWA Standard C500, and
        have a clear waterway equal to the full nominal diameter of the
        valve. Valves shall be provided with a hand wheel, with arrow
        cast in metal to indicate direction of opening.

## 2.08 SUPERVISORY DEVICES

A.  Provide the equipment listed below.

    1.  Electric valve supervision switches shall be installed for all
        internal (inside) and external (outside) fire protection valves
        2½ inches or larger. The devices shall be electrical;
        single-pole, double-throw; with normally closed contacts and
        include design that signals controlled valve is in other than
        normal position.

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    1.  Install vane-type waterflow alarm initiation devices with 250
        psig (1725 kPa) pressure rating and designed for horizontal or
        vertical installation. Include two single-pole, double-throw,
        circuit switches for isolated alarm and auxiliary contacts, 7 A,
        125 V ac and 0.25 A, 24 V dc, complete with tamperproof cover.

    2.  All vane type waterflow alarm initiation devices shall be
        equipped with an adjustable delay of audible alarm initiation.
        Adjustment range shall be from 0 to 120 seconds. Vane type
        waterflow switch shall be Potter Model VSR-F or approved equal.

    3.  Waterflow vane-type alarm initiation devices shall be labeled as
        to the correct orientation of flow when mounted on system
        piping. When drilling of the system riser is necessary to mount
        flow switch, the drilled out disc (coupon) shall be retrieved
        and attached to the mounting u-bolt of the flow switch.

## 2.09 FIRE DEPARTMENT CONNECTIONS

A.  Fire department connections shall have a minimum of two 2½-inch
    inlets with National Standard Hose (NSH) threads, internal double
    clapper check valve, brass plugs, and attached chains.

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F.  Fire department connections shall be installed down stream of the
    riser check valve.

G.  The completed installations shall include a metal sign or escutcheon
    plate, with raised lettering, marked \"FIRE DEPARTMENT CONNECTION
    \"AUTOMATIC SPKR.\"

## [PART 3 - EXECUTION]{.underline}

## 3.01 INSTALLATION

A.  Responsibilities

    1.  The Contractor is responsible for the installation of the
        automatic sprinkler system in accordance with these
        specifications and the contract drawings. The Contractor shall
        coordinate with architectural, mechanical, and electrical,
        design and construction documents, to ascertain the required
        information, to effect a properly designed and installed
        sprinkler system for the office complex construction and
        occupancy classification.

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    1.  The installation of the automatic sprinkler system shall be
        complete with all necessary accessories for proper operation and
        shall be accomplished by a licensed sprinkler contractor or
        licensed company regularly engaged in this type of work, and in
        accordance with requirements of the National Fire Protection
        Association Standards (NFPA).

    2.  The fire protection system installation shall be coordinated
        with the other trades (mechanical, electrical and structural,
        etc.).

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M.  Contamination and Obstruction Prevention. Pipe interiors shall be
    kept free of debris.

N.  Pipe and Fittings Above Ground

    1.  Pipe, fittings, and hangers shall be installed where shown on
        the drawings and in accordance with the requirements of NFPA 13.

    2.  Overhead sprinkler piping, drain and test piping, fire
        department connection piping, etc. installed through exterior
        walls shall be galvanized. All sprinkler piping shall be
        substantially supported from office complex structure and only
        UL listed or FM approved type hangers shall be used. Sprinkler
        lines under ducts shall not be supported from ductwork but shall
        be supported from office complex structure (with trapeze hangers
        where necessary), or from steel angles supporting ductwork in
        accordance with NFPA 13.

    3.  Flanged Fittings or Mechanical Groove Couplings

        a.  Flanged fittings or mechanical groove couplings shall be
            used at the base of risers.

        b.  A flanged tapered reducer shall be installed at the flange
            and spigot piece when riser is smaller than the underground
            supply line.

        c.  Pipe shall be installed straight and true with no greater
            deflection at mechanical groove pipe couplings than is
            recommended by the manufacturer.

        d.  Plain end couplings are not acceptable.

        e.  Only rigid-type mechanical couplings shall be used. Only in
            those areas identified by NFPA 13 where flexible type
            mechanical couplings are specified will the use of flexible
            couplings be permitted. All other parts of the system shall
            use rigid-type mechanical groove couplings.

    4.  Pipe Hangers and Anchors

        a.  Offsets in hanger rods will not be permitted.

        b.  Supports, hangers, braces, etc., shall be attached to the
            office complex primary structural members only.

        c.  When fastening hangars or braces to bar joists, the fastener
            shall be located within 4 inches of the panel point on the
            bar joist or truss.

        d.  All piping larger than 4 inches in diameter shall be
            supported from a minimum of two-bar joists when run parallel
            to a bar joist.

    5.  Welded joints: Welded joints are acceptable when shop fabricated
        in conformance to provisions of NFPA 13.

    6.  Screwed joints: Teflon paste and tape shall be used as
        pipe-joint compound at screwed joints.

    7.  Bushings: Bushings are not permitted.

    8.  Control valves: Control valves shall be provided with
        identification signs describing the areas protected. Where the
        valve location is concealed above the ceiling, a sign below the
        ceiling shall indicate the valve location, and identify the
        protected area.

    9.  Wall, Ceiling, and Floor Penetrations

        a.  Unless otherwise specified, sleeves shall be of Schedule 10
            steel and a minimum of two pipe sizes larger in diameter
            than the passing pipe.

        b.  Holes through walls, floors, and ceilings shall be large
            enough to accommodate pipe expansion. Spaces between pipe
            and sleeve or pipe and opening for floors and exterior walls
            shall be filled with a non-hardening sealant material and
            made watertight.

        c.  Escutcheons shall be provided at wall, ceiling and floor
            penetrations of piping in occupied areas.

    10. The cutting of structural members for the passage of sprinkler
        piping or for pipe-hanger fastenings is not permitted.

    11. Joints

        a.  Joints shall be made in accordance with the requirements of
            NFPA 13.

        b.  Joints shall be left exposed until final inspection and
            testing have been witnessed by the SDR.

        c.  Swing joints are preferred for connecting pendent sprinklers
            to branch lines.

    12. Dielectric unions shall be used to connect dissimilar metals
        (such as steel to copper) to prevent electrolytic action.

O.  Flange Joints, General

    1.  Flanged joints shall be face matched. Raised face flanges shall
        not be mated to flat-face cast-iron flanges on valves or
        equipment. The raised face shall be machined flush. All flange
        bolt holes shall straddle the horizontal and vertical
        centerlines unless otherwise noted. Bolting shall comply with
        ANSI B31.1, Power Piping. Torque values and tightening sequence
        for bolts shall be in accordance with flange manufacturer\'s
        instructions.

    2.  Install insulating kits on flanges connecting dissimilar metals
        (such as steel to copper) to prevent electrolytic action.

    3.  The following procedure shall be followed when making final
        assembly of a bolted flange joint.

        a.  Install the gasket on the gasket-seating surface and bring
            the cover flange in contact with the gasket.

        b.  Install all bolts, ensuring that they are free of dirt and
            grit, and are well lubricated.

        c.  Run-up all nuts finger tight.

        d.  Develop the required torque in each bolt in a minimum of
            four steps. A fairly even compressive force will be exerted
            on the gasket by:

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        1.  The first sequence shall set the bolts at 30 percent of the
            required torque. Damage to the gasket can result beyond this
            amount for the first sequence.

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        1.  The second sequence shall set the bolts at 60 percent of the
            required torque.

        2.  The third sequence shall set the bolts at 90 percent of the
            required torque.

        3.  The fourth sequence shall set the bolts at 100 percent of
            the required torque. A final tightening shall be performed
            in a clockwise bolt-to-bolt sequence to ensure that all
            bolts have been evenly stressed.

## 3.02 SPRINKLER MAIN SYSTEM RISER

A.  The main system riser shall not be less than 4" in diameter and
    consist of the following:

    1\. A double check valve backflow assembly.

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2.  A gauge downstream of the double check valve assembly.

3.  A 2" drain valve (not a quick opening type) located downstream of
    the double check valve assembly.

4.  A vane-type water flow alarm initiation device installed down stream
    of the double check valve assembly.

5.  An electric bell located on the exterior of the prefabricated office
    complex adjacent to the fire department connection.

## 3.03 SPRINKLERS

A.  Pendent sprinklers below ceiling shall be aligned, and parallel to
    ceiling features, walls, etc. In areas without a suspended ceiling,
    install sprinkler piping as high as possible, using necessary
    fittings and auxiliary drains to maintain maximum clear headroom.

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A.  Where two sprinkler systems abut, the pendent sprinklers shall be
    aligned in different directions to distinguish the boundaries of
    each sprinkler system.

B.  Sprinklers shall not be installed closer than 6 feet apart.

C.  Ceiling Areas: Where suspended ceilings are installed, the sprinkler
    Contractor shall install pendent sprinklers as shown on the
    reflected ceiling plans. Where reflected ceiling plans do not
    specify the location of the pendent sprinklers, the Contractor shall
    design sprinkler locations at least 6 inches from ceiling tile edges
    and 2 feet 6 inches from HVAC supply louvers. Install intermediate
    degree rated sprinklers if 2 feet 6 inches cannot be maintained from
    HVAC supply louvers. Sprinklers shall be installed following a
    repetitive pattern and along straight lines to the extent possible.
    Swing joints shall feed pendent sprinklers from 1-inch outlet tees
    in branch lines.

## 3.04 DRAINS

A.  Two-inch drains shall be installed on all main risers and downstream
    of any interior sectional valves, and shall be piped to drain.

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D.  A pressure gage cock and approved gage shall be installed downstream
    of interior sectional valves of 4 inches size and larger. 3/4-inch
    valve auxiliary drains with standard hose threads and caps shall be
    installed at all low points in the system, where more than five
    sprinklers are trapped. Where the capacity of trapped piping exceeds
    20 gallons (75-1), the overflow shall be piped to drain.

E.  Inspector\'s test connections shall be installed on each sprinkler
    system as near the most hydraulically remote end of the system as
    possible. The orifice shall be sized to discharge a flow equivalent
    to the smallest orifice sprinkler in the system. The inspector\'s
    test valve shall be located not more than seven feet above the floor
    in a visible, easily accessible location.

F.  Drains shall be piped to discharge outside prefabricated office
    complex in visible location.

G.  Drains and inspector\'s test connections through outside walls shall
    be run through the walls as close to the floor or grade line as
    possible, terminating with a 45 degree galvanized elbow turned down
    to splash blocks.

H.  Concrete splash blocks, 18\" x 18\" x 4\" (45 cm x 45 cm x 10 cm)
    minimum in size, shall be installed under each drain or test outlet.

## 3.05 FIRE DEPARTMENT CONNECTIONS

A.  

B.  The check valve and normally open automatic ball drip (ABD) shall be
    located at points where they will not be subject to freezing
    temperatures, and the discharge from the ball drip shall be piped to
    drain. The ball drip shall close when the flow of water through the
    valve is in the range of 4 through 10 gpm (0.25 to 0.6 l/s). All
    ball drips shall be rated at 175 psi (1.2 MPa). Use valve- drains in
    place of automatic ball drip drains when the static head of water
    above the ABD will exceed 11\'6\" (3.5 m) (5 psi) (34 kPa). Check
    valves shall be UL listed or FM approved and shall have bodies with
    the UL or FM stamp.

    A.  The fire department connection shall be installed between 18
        inches and 48 inches above grade.

        C. Fire Department Connection shall be installed in an area
        accessible by the Fire Department.

## 3.06 IDENTIFICATION

A.  Control, drain, test, and zone water flow switches shall be provided
    with identification signs of the standard design adopted by the
    automatic-sprinkler industry, or their equivalent.

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A.  A hydraulic data information nameplate shall be secured to the riser
    with chain, directly above the controlling check valve and shall
    include the following design data.

    1.  Office complex designation

    2.  Location of remote area

    3.  Design density

    4.  Area of application

    5.  System demand (gpm (l/s) and psi (kPa) at base of riser)

    6.  Data shall be permanently engraved on the nameplate as follows:

    7.  Material shall be durable plastic or aluminum. Minimum height of
        lettering is 1/8\".

B.  The Contractor shall furnish and place in a clear, plastic envelope
    attached to each sprinkler main system riser the following:

    1.  One complete set of typed or printed maintenance and operating
        instructions.

    2.  A set of prints of the as-built working drawings and hydraulic
        calculations of the sprinkler system.

C.  Contractor shall supply each riser with a cabinet containing
    maintenance and repair equipment (spare heads, wrench, etc.)

D.  Each Contractor shall affix an identification tag on each system
    riser indicating:

    Name of the Contractor

    Business Address of the Installing Contractor

    Phone Number

    24-hour emergency contact phone number.

## 3.07 FLUSHING

A.  Before connecting sprinkler systems to the main supply, each
    sprinkler supply line shall be flushed out thoroughly by the
    Sprinkler Contractor in the presence of the SDR, through an
    unrestricted opening not less than 4 inches in diameter. Minimum
    flowing quantities are specified in NFPA 13.

B.  Failure to comply with this requirement shall necessitate flushing
    of the entire sprinkler system by the Contractor at no additional
    cost to Sandia/NM.

C.  A 4-inch temporary pipe or two 2½-inch fire hoses shall be provided
    by the Contractor to discharge water to a suitable location, as
    designated by the SDR.

D.  The Contractor shall flush interior sprinkler piping when required
    by the SDR.

## 3.08 TESTING

A. Aboveground Tests: Prior to acceptance of the installation, the
Contractor shall, in the presence of the SDR, subject the system to the
tests required by NFPA 13 for the completion of the Contractor\'s
Material and Test Certificate.

1.  Hydrostatic testing shall be performed before any ceiling is
    installed below the sprinkler piping. Each water control valve shall
    be fully opened and closed under water pressure to ensure proper
    operation.

2.  Where sprinkler locations are roughed-in, using plugged drop nipples
    projecting below the level of the finished ceiling; the hydrostatic
    testing shall be performed two times.

    a.  First, after the system is completed using the plugged drops,
        and before the ceiling panels are installed.

    b.  Second, after the plugged drop nipples are cut to length for the
        finished ceiling, or replaced with other drop nipples of the
        correct length, and the sprinklers installed.

3.  The addition of sodium silicate (also known as water-glass) and
    related substances before hydrostatic testing, to stop water
    leakage, is not permitted.

4.  Pipe interiors shall be kept free of debris.

    B. Alarm Testing: Contractor shall be responsible for testing new
    alarms and modified alarms installed under this contract. Defective
    alarms shall be replaced immediately.

## 3.09 PROTECTION AGAINST FREEZING

A. Sprinkler piping passing through any unheated spaces in, under, or
outside prefabricated office complex exposed to freezing, shall be
protected as shown on the plans or in accordance with the methods
specified in NFPA 13. Exposed to freezing is defined as any location
where the temperature may drop below (40ºF) 5°C at any time during the
year.

B. Heating shall be provided for sprinkler protected spaces in lieu of
providing anti-freeze systems except where otherwise noted on the
drawings or specified herein.

## 3.10 PROTECTION FOR BACKFLOW PREVENTION

A. A double check valve backflow prevention assembly shall be installed
on all new systems and where shown on the drawings for modifications to
systems to prevent cross-connection contamination between potable water
systems and any fire sprinkler system. Install the (DCVA) at the service
connection for the fire sprinkler system or as noted on the contract
drawings.

B. (DCVA) assemblies shall be either FM approved or UL listed and be
approved by the Foundation for Cross-Connection Control and Hydraulic
Research, University of Southern California (USC-FCCHR).

C. Backflow prevention assemblies used or installed under this contract
shall be tested by a \"Certified Backflow Control Assembly Tester\" who
possesses a current (within three (3) years from date of issuance)
certificate that confirms successful completion of an approved (SDR
specified or USC-FCCCHR or Colorado Environmental Training Center,
Golden, Colorado) training course.

D. DCVA assemblies shall be installed in accordance with AWWA Manual M14
requirements, or as directed by the SDR.

E. If DCVA devices will be installed outside the office complex they
must be in heated enclosures and with adequate space for inspection,
tests and maintenance.

F. The Contractor shall perform an operational test on any new or
relocated backflow prevention assemblies used or installed under this
contract. Passing backflow preventers shall be labeled with a tag
indicating: test performed, tester\'s initials and date. Testing
documentation shall be submitted to the Sandia Delegated Representative
(SDR).

G. Repairs to DCVA shall be made with original manufacturer\'s parts.

H. A full forward flow test shall be conducted per NFPA 13 requirements
at the time of system acceptance and witnessed by the Sandia/NM Fire
Protection Engineer.

## 3.11 PAINTING AND LABELING

A. Contractor shall paint those portions of fire protection as required
by Section 09900, "Painting". Labeling shall be as follows:

1\. Sprinkler system (e.g., inspectors tests, drain valves) shall be
labeled with all information required by NFPA Standard 13.

2\. Labeling shall be accomplished with the use of permanently marked
weatherproof metal or rigid plastic identification signs. The signs
shall be secured with corrosion-resistant wire, chain, or other approved
means. These signs shall be provided by the manufacturer,
manufacturer\'s representative, or installer of the sprinkler system.

3\. Sprinkler riser shall be labeled with office complex and sprinkler
system riser numbers. Labeling shall be accomplished with the use of
\"Brady\" or approved equal self-sticking labels. The color and size
shall contrast the surface that it is applied to. The labels shall be
provided and applied by Sandia/NM Fire Protection Systems Maintenance
Organization.

## 3.12 DISINFECTION

A. Piping installed under this contract shall be disinfected per AWWA
C651 before it is placed in operation, by using one of the following
methods.

B. EXCEPTION: Where non-potable fire protection piping is added
downstream of a RPBFP, disinfection is not required.

C. Continuous Feed Method:

1\. Place calcium hypochlorite in pipe sections when installing pipe or
inject liquid chlorine into the system via the injection port. Pipe is
filled with water and chlorine concentration shall remain at 10 mg/l for
a minimum of 24 hours. During this time, all valves in new section will
be cycled open and closed to allow for adequate disinfection. Valves
connecting the new or repaired line with mains in active service shall
remain closed to prevent chlorine pollution.

2\. Samples shall be drawn at 1-, 4-, 8-, 12-, 16-, 20-, and 24-hour
marks to determine the chlorine concentration. Acceptable tests are the
N-diethyl-p-phenylenediamine (DPD) drop dilution method (AWWA C651,
Appendix A) or the High Range Test Kit. The tests shall be done by the
contractor and witnessed by the SDR. The results shall be recorded for
auditing purposes.

D. Slug Method:

1\. Similar to the continuous feed method. Follow AWWA C651. Chlorine
concentration to be 100 mg/l for a minimum of 3 hours. During this time,
all valves shall be cycled open and closed to allow for adequate
disinfection. Valves connecting new or repaired lines with mains in
active service shall remain closed to prevent chlorine pollution.

2\. Samples shall be drawn every 15 minutes to determine concentration.
Acceptable tests are the DPD drop dilution method or the High Range Test
Kit. The tests shall be conducted by the contractor and witnessed by the
SDR. The results shall be recorded for auditing purposes.

E. Repairing or Cutting into Existing Mains:

1\. New interior piping surfaces shall be swabbed with a one- percent
hypochlorite solution. The section being modified shall be subjected to
a high chlorine disinfection process per AWWA C651. The concentration
shall be a minimum of 300 mg/l for 15 minutes.

2\. Samples shall be drawn before the chlorine is injected and every 5
minutes thereafter. Chlorine concentration shall be tested by the
contractor or SDR designee using the High Range Test Kit. SDR shall
witness the test and results shall be recorded.

E.  Flushing:

    1.  After the lines have been chlorinated using one of the above
        methods, it becomes necessary to flush the lines with water
        until test sample indicates that the water is suitable for
        drinking. The residual chlorine concentration in the water is to
        be between 0.2 and 2.0 mg/l, as measured using a Low Range Test
        Kit. The test shall be witnessed by SDR or other SDR designee
        and the results recorded.

    2.  Heavily contaminated water shall be disposed of or neutralized
        under the direction of Sandia/NM Pollution Prevention and
        Environmental Monitoring Department.

F.  Bacteriological Testing:

    1.  All new and modified water lines require testing for coliform
        organisms per AWWA C651. The testing shall occur after
        successful chlorination and flushing of the lines. Samples shall
        be taken from the new line in sodium thiosulfate treated sterile
        bottles and analyzed as specified by APHA's Standard Methods for
        the Examination of Water and Wastewater. Analysis, at the
        discretion of the SDR representative shall be performed by
        Sandia/NM Industrial Hygiene or an independent laboratory.

    2.  Results shall be recorded with the original documentation of
        results attached. These will be used for auditing purposes.

    3.  Fire protection lines will not be accepted until a negative
        bacteriological test is performed. Lines will be chlorinated and
        flushed repeatedly, at no additional cost to Sandia/NM, until
        such a negative test is accomplished.

## [PART 4 -- CADD SOFTWARE GUIDELINES FOR DRAWING SUBMITTALS]{.underline}

## 4.01 MicroStation J

A. Sandia/NM Facilities maintains MicroStation J for Windows/NT, release
05.07.01.14 (vector) as its standard CADD software. When future upgrades
occur, it is required that the Fire Alarm Designer utilize the new
workspace and MicroStation software. To maximize efficiency, Sandia/NM
will provide a custom MicroStation J workspace environment, which
includes toolboxes, tool frames, macros, MicroStation Development
Language (MDL) application, user commands, help routines, and menu bars
to help in the production of facilities CADD files. Refer to the
Facilities CADD Standards Manual for further instructions.

## 4.02 AutoCAD

A. AutoCAD 2000 or later versions may be used in lieu of MicroStation J
under the condition that the following requirements will be met:

1\. The translated MicroStation architectural floor plan must be
referenced into AutoCAD model. Each AutoCAD model will show the Fire
Alarm Design for a given floor.

2\. The Sandia/NM standard border files must be referenced into all
project sheets (layout tabs). Each layout tab will contain border, keyed
notes, general notes, details, and title block information. Each layout
tab will be identified (labeled) with correct Sandia/NM plotted file
name.

3\. All data, designs, records, graphics and supporting tools generated
during project creation shall be included in the deliverable file
package.

4\. Any fonts, line styles, or blocks used to generate these files that
are not AutoCAD 2000 standard must be submitted as part of the
deliverable package.

5\. All layers will follow CAD Layer Guidelines, 2nd edition or newer,
established by the American Institute of Architects.

6\. A table, listing all line, text, and block information will be
created within each design file just outside of the plotted area.
Information to include: layer names, color, pen width association, line
style, description, text size, block names and identification of frozen
layers.

7\. When design is completed, all deliverables must be in MicroStation J
format. Any assistance or questions should be directed to and from the
Sandia/NM CADD Coordinator.

## [PART 5 - ATTACHMENTS]{.underline}

## Attachment 1 -- Shotgun Riser Detail

END OF SECTION

![](media/image1.png){width="6.99375in" height="6.593055555555556in"}

Attachment 1 -- SHOTGUN RISER DETAIL