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    SECTION 11337

    WEIRS

   PART 1 - GENERAL

   1.01 SECTION INCLUDES

    A. Influent and Overflow Weirs in Detention Basin.

   1.02 RELATED SECTIONS

    A. Section 05500 - Metal Fabrications.

   1.03 REFERENCES

    A. ASTM D256: Resistance of Plastics and Electrical Insulating Materials.

    B. ASTM A276: Stainless and Heat-Resisting Steel Bars and Shapes.

    C. ASTM D570: Water Absorption of Plastics.

    D. ASTM D638: Tensile Properties of Plastics.

    E. ASTM D790: Flexural Properties of Unreinforced and Reinforced Plastics and Electrical Insulating Materials.

   1.04 SUBMITTALS

    A. Submit under provisions of Section 01300.

    B. Shop Drawings: Indicate layout, general assembly, components, dimensions, and anchor bolt setting.

    C. Product Data: Provide manufacturer's literature.

    D. Samples: Submit three 6-inch x 6-inch x 1/4-inch samples of polyester laminate to be used in the weirs, baffles, and supports, and three 6-inch long actual weirs with anchor bolt holes.

   1.05 DELIVERY, STORAGE AND HANDLING

    A. Deliver to site, store, protect, and handle weirs and baffles under provisions of Section 01600.

    B. Protect weirs from physical damage including effects of weather, water and construction debris.

   PART 2 - PRODUCTS

   2.01 MANUFACTURERS

    A. F. B. Leopold Company, Inc., Zelienople, PA.

    B. Substitutions: Under provisions of Section 01600.

   2.02 MATERIALS

    A. Weir plates: Fabricated plate stock with cut edges or notches will not be acceptable.

    B. Weir plates, butt plates, washers, and support brackets: Fiberglass reinforced polyester plastic, molded by the matched die method to produce uniform, smooth surfaces.

    C. All surfaces: Smooth, resin rich, free of voids and porosity, without dry spots, crazes, or unreinforced areas; provide for increased corrosion resistance and weathering.

    D. Laminate: Glass content of 30 plus or minus 2 percent using Type "E" glass with chrome or silane finish.

    E. Powdered reinforcements: 47.5 plus or minus 1 percent of resin mixture.

    F. Final laminate thickness: Plus or minus 10 percent of the nominal specified thickness.

    G. Laminate: Ultra-violet inhibitors added to protect the laminate from deterioration from sunlight.

    H. Color: Aqua.

    I. Minimum physical properties:

    Test Method

    Tensile Strength 7,000 psi ASTM D638

    Flexural Strength 16,000 psi ASTM D790

    Flexural Modulus 800,000 ASTM D790

    Impact, Notches, Izod

    foot pound per inch 10.0 ASTM D256

    Barcol Hardness minimum 35 Barcol

    Impressor

    GYZJ-934-1

    Average coefficient

    of thermal expansion -

    inch per inch,

    per degree F 0.000016

    Water absorption,

    percent, 24 hours 0.2 ASTM D570

   2.03 ACCESSORIES

    A. Fasteners: ASTM A276, Type 316 stainless steel.

    B. Anchor Bolts and Nuts: ASTM A276, Type 316 stainless steel.

    C. Caulking compound: Acrylic polymer or a two part sealant equal or exceeding Federal Spec. TT-S227B.

   PART 3 - EXECUTION

   3.01 INSTALLATION

    A. Install weirs in accordance with manufacturer's instructions.

    B. Erect weirs to the elevations shown on the Drawings.

    C. Install caulking compound between the contact surface of weirs and face of concrete to completely prevent flow of liquid up between these contact surfaces.

    END OF SECTION