Spec Disk 1998 Spring 4.0/Spec Disk 1998 Spring 4.0.iso/text/07612cda.txt

Text File | 1998-06-10 | 18.2 KB | 440 lines

                         SECTION 07612

                      SHEET COPPER ROOFING

NOTE ** This section includes copper and lead-covered sheet
        copper roofing.  Styles include flat seam, standing
        seam, batten seam, and horizontal seam (Bermuda
        style) systems.
NOTE **
NOTE ** Information in this section is provided by the
        Copper Development Association (CDA), the central
        authoritative source of technical data on the
        design specification and installation of
        architectural copper products.  With capabilities
        for providing seminars, technical publications,
        design assistance and review, CDA can be an
        invaluable resource to the architect specifying any
        architectural copper products or applications.
NOTE **
NOTE ** For additional information about copper roofing,
        contact CDA at:
NOTE **    260 Madison Avenue
NOTE **    New York, New York  10016
NOTE **    Tel:  [phone];  Fax:  [phone]
NOTE **
NOTE ** SECTION 07612 - SHEET COPPER ROOFING, Copyright
        1998, The Architect's Catalog, Inc.
PART 1  GENERAL

1.1 SECTION INCLUDES
NOTE ** Edit list below to conform to project requirements.

    A.  Flat-seam copper roofing.

    B.  Standing-seam copper roofing.

    C.  Batten-seam copper roofing.

    D.  Horizontal-seam (Bermuda type) copper roofing.

    E.  Custom-designed copper roofing.

1.2 RELATED SECTIONS
NOTE ** Delete paragraphs below and add others as
        appropriate for project.

    A.  Section 05120 - Structural Steel:  Roof framing.

    B.  Section 06100 - Rough Carpentry:  Wood framing and
        decking.

    C.  Section 07200 - Thermal Insulation:  Roof insulation.

    D.  Section 07622 - Copper Flashing and Trim:  Flashing and
        other trim not part of roofing.

    E.  Section 07712 - Copper Roof Specialties:  Accessories on
        roof other than mechanical and structural items.
NOTE ** Paragraph above may be edited to identify specific
        items such as reglets, relief vents, roof expansion
        assemblies, ornamental items, etc.

    F.  Section 07900 - Joint Sealers:  Field-applied panel
        sealants.

    G.  Section 09900 - Paints and Coatings:  Copper roofing
        finishes.

1.3 REFERENCES

    A.  ASCE 7 - Minimum Design Loads for Buildings and Other
        Structures.

    B.  ASTM B 32 - Standard Specification for Solder Metal.

    C.  ASTM B 101 - Standard Specification for Lead-Coated
        Copper Sheet and Strip for Building Construction.

    D.  ASTM B 370 - Standard Specification for Copper Sheet and
        Strip for Building Construction.

    E.  UL 580 - Tests for Uplift Resistance of Roof Assemblies.

    F.  CDA 4115-1929 - Copper in Architecture Handbook; Copper
        Development Association.
NOTE ** Delete article below if not required.

1.4 PERFORMANCE REQUIREMENTS

    A.  Design roof assembly to conform to the requirements of
        ASCE 7, Minimum Design Loads for Buildings.

1.5 SUBMITTALS

    A.  Submit in accordance with Section 01300.

    B.  Product Data:  Submit metal manufacturer's and
        fabricator's specifications, installation instructions,
        and general recommendations for roofing applications.
NOTE ** Delete paragraph below if work is fully concealed,
        to be left unfinished, or field painted, or if
        appearance is unimportant.

    C.  Samples: 6 inch square specimens of specified copper
        roofing material.
NOTE ** Delete paragraph below if details are of no
        importance or are adequately covered by working
        drawings.

    D.  Shop Drawings:  Show manner of forming, joining, and
        securing copper roofing, and pattern of seams.  Show
        expansion joint details and waterproof connections to
        adjoining work and at obstructions and penetrations.

1.6 QUALITY ASSURANCE

    A.  Installer:  A firm with 3 years of successful experience
        with installation of copper roofing of type and scope
        equivalent to project requirements.

    B.  Industry Standard:  Except as otherwise shown or
        specified, comply with applicable recommendations and
        details of CDA 4115-1929, "Copper in Architecture
        Handbook" by Copper Development Association (CDA).
        Conform to dimensions and profiles indicated.
NOTE ** Delete paragraph below if UL Class 90 roof not
        required, or modify if FM Class I-90 or I-60
        required.

    C.  Wind Uplift:  Provide roof assemblies meeting
        requirements of UL 580 for Class 90 wind uplift
        resistance.
NOTE ** Delete mock-up provisions below unless the
        expenditure is justified by an extensive, unusual,
        or crucial application of metal roofing.

    D.  Mock-Up:  Before proceeding with final purchase of
        materials and fabrication of copper roofing components,
        prepare a mock-up of work in location indicated on
        Drawings.  Incorporate materials and methods of
        fabrication and installation identical with project
        requirements.  Retain accepted mock-up as quality
        standard for acceptance of completed copper roofing.  If
        accepted, mock-up may be incorporated as part of copper
        roofing work.

1.7 DELIVERY, STORAGE, AND HANDLING

    A.  Store copper sheet and coil products, both uncoated and
        lead-coated, in dry location and in a manner so as to
        preclude the formation of condensation on copper
        surfaces.

PART 2  PRODUCTS

2.1 MANUFACTURERS

    A.  Provide products manufactured by one of the following:
NOTE ** Names listed below are examples only.  Retain or
        insert only those manufacturers whose materials
        correspond with other requirements and whose
        availability and suitability for project
        application have been verified.

        1.  Revere Copper Products, Inc.
        2.  Hussey Copper, Ltd.
        3.  Outokumpu American Brass Company.

2.2 MATERIALS

    A.  Copper Roofing Sheets:  Cold-rolled copper sheet
        complying with ASTM B 370 temper designation, H00, unless
        otherwise indicated, and as follows:
        1.  Weight:  16 oz. per sq. ft. unless otherwise
            indicated.
NOTE ** Delete paragraph above or below as appropriate.
        Refer to manufacturers' literature for selection of
        thickness appropriate to application indicated.
        2.  Weight:  20 oz. per sq. ft. unless otherwise
            indicated.
NOTE ** Retain below for batten roofing.

    B.  Batten Caps:  20 oz. per sq. ft. copper unless otherwise
        indicated.
NOTE ** Retain paragraph below for lead-coated copper.

    C.  Lead-Coated Copper Roofing Sheets:  Lead-coated copper
        sheet complying with ASTM B 101, temper designation H00,
        consisting of cold-rolled copper sheet coated both sides
        with lead weighing not less than 12 lbs. nor more than 15
        lbs. per 100 sq. ft. of copper sheet (one half of total
        weight of lead applied each side), and as follows:
        1.  Weight of Coated Sheet:  Not less than 17.1 oz. per
            sq. ft. (nominal weight of bare copper sheet, 16
            oz.), unless otherwise indicated.
NOTE ** Delete either above or below.  Refer to reference
        materials;  modify if other than Class A used.
        2.  Weight of Coated Sheet:  Not less than 21.2 oz. per
            sq. ft. (nominal weight of uncoated copper sheet, 20
            oz. per sq. ft.) unless otherwise indicated.
NOTE ** Retain below for batten roofing.

    D.  Batten Caps:  21.2 oz. per sq. ft. lead-coated copper
        unless otherwise indicated.

    E.  Miscellaneous Materials:  Provide materials and types of
        fasteners, solder, welding rods, protective coatings,
        separators, sealants and accessory items as recommended
        by copper sheet manufacturer and fabricator for copper
        roofing work, except as otherwise indicated.
NOTE ** Delete paragraph below if joints described are not
        required.

    F.  Expansion Joint Sealant:  For hooked-type expansion
        joints, which must be free to move, provide nonsetting,
        nonhardening, nonmigrating, heavy-bodied polyisobutylene
        mastic sealant.
NOTE ** Retain paragraph below for copper and lead coated
        copper installed on underlayment sheet.

    G.  Paper Slip Sheet:  Minimum 4-lb. rosin-sized building
        paper.
NOTE ** Revise below with specific requirements where
        desired for project.

    H.  Accessories:  Except as indicated as work of another
        specification section, provide components required for a
        complete roof system, including trim, copings, fascias,
        ridge closures, clips, seam covers, battens, flashings,
        gutters, louvers, sealants, gaskets, and closure strips.
        Match materials and finishes of roof.
        1.  Sealing Tape:  Pressure-sensitive 100 percent solids
            polyisobutylene compound sealing tape with release
            paper backing.  Provide permanently elastic, nonsag,
            nontoxic, nonstaining tape.
        2.  Joint Sealant:  One-part elastomeric polyurethane,
            polysulfide, butyl, or silicone rubber sealant as
            recommended by the building manufacturer.

    I.  Bituminous Coating:  Cold-applied asphalt mastic, SSPC-
        Paint 12, compounded for 15-mil dry film thickness per
        coat, except as otherwise indicated.  Provide inert-type
        noncorrosive compound, nominally free of sulfur
        components and other deleterious impurities.

    J.  Roofing Felt:  Asphalt or coal tar saturated felt
        weighing not less than 30 lbs per 100 square feet.
NOTE ** Delete above if alternative underlayment is used.

    K.  Fabric Underlayment:  Manufacturer's standard nonwoven
        polyester fabric marketed for use in cold-applied single
        ply roof systems, weighing 6.0 oz. per sq. yd., white,
        nonswelling, rot and mildew resistant.
        1.  Product:  E-6-N Rufon Fabric; Phillips Fibers Corp.
NOTE ** Retain paragraph below if battens are intended as
        part of roofing work.

    L.  Batten Bars and Strips:  If size is not indicated,
        provide battens of nominal 2 inch by 2 inch size (1-1/2
        inch by 1-1/2 inch minimum).
        1.  Copper Batten Bars:  20-ounce cold-rolled copper.
NOTE ** Delete if no batten-type roofing requiring wood
        strips or if battens are to be specified as part of
        Division 6 carpentry work.

        2.  Wood Batten Strips:  Fabricated to size indicated
            from lumber complying with requirements of Section
            06100 - Rough Carpentry and preservative treated by
            pressure process using a chemical solution that is
            nonhygroscopic and noncorrosive to type of copper
            roofing.
NOTE ** Insert other materials as needed for roofing work
        (elastomeric sealants, insulation, solder, reglets,
        gaskets, etc.)

    M.  Nails:  Copper or hardware bronze, 0.109 inch minimum not
        less than 7/8 inch long barbed with large head.

    N.  Screws and Bolts:  Bronze, brass, or stainless steel.

    O.  Cleats:  16 ounce cold rolled copper; 2 inches wide x 3
        inches long.

    P.  Solder:  ASTM Specification B 32, Composition 50/50
        tin/lead; 60/40 tin/lead for lead-coated copper.

    Q.  Flux:  Muriatic acid neutralized with zinc or approved
        brand of soldering flux.

2.3 SHOP-FABRICATED UNITS

    A.  General Metal Fabrication:  Shop-fabricate work to
        greatest extent possible.  Comply with details shown and
        with applicable requirements of CDA "Copper in
        Architecture Handbook" and other recognized industry
        practices.  Fabricate for waterproof and weather-
        resistant performance with expansion provisions for
        running work, sufficient to permanently prevent leakage,
        damage, or deterioration of the work.  Form work to fit
        substrate.  Comply with material manufacturer's
        instructions and recommendations for forming material.
        Form exposed copper work without excessive oil-canning,
        buckling, and tool marks, true to line and levels
        indicated, with exposed edges folded back to form hems.

    B.  Seams:  Fabricate nonmoving seams in copper sheet with
        flat-lock seams.  Tin edges to be seamed, form seams, and
        solder.  Rivet joints for additional strength where
        indicated.

    C.  Expansion Provisions:  Where lapped or bayonet-type
        expansion provisions in work cannot be used, or would not
        be sufficiently water/weatherproof, form expansion joints
        of intermeshing hooked flanges, not less than 1 inch
        deep, filled with mastic sealant (concealed within
        joints).

    D.  Sealant Joints:  Where movable, non-expansion-type joints
        are indicated or required for proper performance of work,
        form copper to provide for proper installation of
        elastomeric sealant, in compliance with CDA standards.

    E.  Separations:  Provide for separation of copper from
        noncompatible metal or corrosive substrate by coating
        concealed surfaces at locations of contact, with
        bituminous coating or other permanent separation as
        recommended by manufacturer/fabricator.


PART 3  EXECUTION
NOTE ** Delete any of the following provisions that are not
        applicable to the type of roofing required.

3.1 COORDINATION

    A.  Coordinate copper roofing with rain drainage work,
        flashing, trim and construction of decks, parapets,
        walls, and other adjoining work to provide a permanently
        leakproof, secure, and noncorrosive installation.

3.2 PREPARATION

    A.  Clean surfaces to receive copper roofing.  Substrate to
        be smooth and free of defects.  Drive all projecting
        nails or other fasteners flush with substrate.

3.3 INSTALLATION

    A.  Manufacturer's Recommendations:  Except as otherwise
        shown or specified, comply with recommendations and
        instructions of manufacturer of copper being fabricated
        and installed.

    B.  Separate dissimilar metals by painting each metal surface
        in area of contact with a bituminous coating, by applying
        rubberized asphalt underlayment to each metal surface, or
        by other permanent separation as recommended by
        manufacturers of dissimilar metals.
NOTE ** Most substrate conditions require underlayment and
        slip sheets.  Delete below only upon recommendation
        of metal manufacturer for specific project
        conditions.

    C.  Install underlayment and paper slip sheet on substrate
        under copper roofing to greatest extent possible unless
        otherwise recommended by manufacturer of sheet metal.
        Paper slip sheets must be installed over the
        underlayment.  Use adhesive for temporary anchorage,
        where possible, to minimize use of mechanical fasteners
        under copper roofing.  Lap joints 2 inches minimum.

    D.  Form and fabricate sheets, seams, strips, cleats,
        valleys, ridges, edge treatments, integral flashings and
        other components of copper roofing to profiles, patterns
        and drainage arrangements shown and as required for
        permanently leakproof construction.  Provide for thermal
        expansion and contraction of the work, as indicated.
        Seal joints as shown and as required for leakproof
        construction.  Shop-fabricate materials to greatest
        extent possible.

    E.  Sealant-Type Joints:  Where sealant-filled joints are
        used, embed hooked flanges of joint members not less than
        1 in. into sealant.  Form joints to conceal sealant
        completely.  When ambient temperature is moderate at time
        of installation, 40 degrees to 70 degrees F  (4 degrees
        to 21 degrees C), set joint members for 50 percent
        movement either way.  Adjust setting proportionately for
        installation at higher ambient temperatures.  Do not
        install sealant-type joints at temperatures below 40
        degrees F (4 degrees C).  Comply with requirements of
        Section 07900 for handling and installing sealants.

    F.  Fabricate and install work with lines and corners of
        exposed units true and accurate.  Form exposed faces flat
        and free of buckles, excessive waves, and avoidable tool
        marks considering temper and reflectivity of metal.
        Provide uniform, neat seams with minimum exposure of
        solder, welds, and sealant.  Except as otherwise shown,
        fold back sheet metal to form a hem on concealed side of
        exposed edges.

    G.  Conceal fasteners and expansion provisions where possible
        in exposed work, and locate so as to minimize possibility
        of leakage.  Cover and seal fasteners and anchors as
        required for a tight installation.

    H.  Tin uncoated copper surfaces at edges of sheets to be
        soldered, for a width of 1-1/2 inches, using solder
        recommended for copper work.  Where surfaces to be
        soldered are lead-coated, do not tin the edges, but wire
        brush lead coating before soldering.

3.4 CLEANING

    A.  Remove protective film (if any) from exposed surfaces of
        copper roofing promptly upon installation.  Strip with
        care to avoid damage to finishes.

    B.  Clean exposed metal surfaces of substances that would
        interfere with uniform oxidation and weathering.
NOTE ** Delete provisions below if copper will be allowed
        to weather naturally.

3.5 FINISHING
NOTE ** Review paint selection with coatings manufacturer.

    A.  To retard natural weathering, apply a uniform coating of
        high grade paraffin oil or a clear lacquer coating.

3.6 PROTECTION

    A.  Provide final protection in a manner acceptable to
        installer that ensures that copper roofing is without
        damage or deterioration at time of Substantial
        Completion.


                         END OF SECTION