SECTION FIBERGLASS WEIRS AND BAFFLES

Transcription

1 SECTION FIBERGLASS WEIRS AND BAFFLES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: 1. Furnish and install fiberglass weir plates, baffles, mounting brackets, lap plates, cover washers and all hardware required. 2. Specific applications include: a. V-notch weirs at final clarifier. b. Scum baffle at final clarifier. c. Rectangular or straight-edge weirs at aeration basins d. Rectangular or straight-edge weir at post aeration. B. Related Sections: 1. Division 6 Section "Density Current Baffles" for density current deflectors for installation in final clarifier. 1.3 REFERENCES AND DEFINITIONS A. References: 1. American Water Works Association (AWWA): a. F102 Standard for Matched-Die-Molded, Fiberglass-Reinforced Plastic Weir Plates, Scum Baffles, and Mounting Brackets B. Definitions: 1. Baffle: A plate usually in front of the weir plate that prevents floating particles from flowing over the weir plates. 2. Cosmetic Defect: A blemish that has no effect on the ability of the component to meet the structural design and production test requirements of AWWA F102 Standard. Should the blemish or the activity of plugging, grinding, or repairing of such blemish or the activity of plugging, grinding, or repairing the blemish caused the component to fail these requirements, then the blemish shall be considered a structural defect. 3. Weir Plate: A plate with straight edges, V-notches, or square cutouts along the top edge to allow water to flow over each notch at a predetermined rate. 1.4 PERFORMANCE REQUIREMENTS A. General Performance: Weirs and Baffles shall withstand the forces imposed during water treatment operations without failure due to manufacturer s design of individual components or complete system, defective manufacture, fabrication, installation, or other defects in construction. B. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes without exceeding deflection or strain in Accordance with the requirements of AWWA F Temperature Change (Range): -10 F to 110 F. 1.5 SUBMITTALS A. Product Data: For each type of product indicated. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for v-notch weirs for final clarifier. B. Shop Drawings: For Process Treatment Unit. Include plans, elevations, sections, details, and attachments to other work Page 1 of 4 FIBERGLASS WEIRS AND BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06330 Fiberglass Weirs and Baffles_Final.docx

2 1. Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. C. Qualification Data: For qualified manufacturer. D. Product Certificates: For each type of product, provide Affidavit of Compliance from manufacturer. 1.6 QUALITY ASSURANCE A. Manufacturer Qualifications: All equipment shall be the product of a manufacturer having at least ten (10) U.S. installations of the type being proposed, each with a minimum of 5 years of satisfactory service. B. Source Limitations: Obtain from single source. 1.7 DELIVERY, STORAGE, AND HANDLING A. Deliver, handle and store fiberglass components in accordance with AWWA F102, Section 6: Delivery, the manufacturer s written instructions and the requirements of Division 1 Section Product Requirements. 1.8 PROJECT CONDITIONS A. NSF Certified: All surfaces and materials in contact with water or in contact with a chemical being added to water that is being treated for potable water use and conveyance, shall comply with the requirements of the Safe Drinking Water Act and shall conform to NSF-61. Product shall bear the mark or seal of an accredited testing laboratory. B. Field Measurements: Verify actual dimensions of construction contiguous with weirs and baffles by field measurements before fabrication. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Bedford Reinforced Plastics, Inc.; Bedford, PA. 2. Fiberglass Fabricators, Inc.; Smithfield, RI. 3. MFG Water Treatment Products Company; Union City, PA. 4. Warminster Fiberglass Company; Southampton, PA. 2.2 WEIRS, BAFFLES AND BRACKETS A. Description: 1. Provide die-matched-molded, fiberglass-reinforced plastic weir plates, baffles, lap plates and mounting brackets in accordance with the requirements of AWWA F Materials: Comply with the requirements of AWWA F102, Section 4: Requirements. 3. Resin: a. Type 1: Commercial-grade polyester thermosetting resin for general purpose applications. b. Type 2: Commercial-grade, chemical resistance polyester thermosetting resin. c. Provide Ultraviolet Stabilizers. 4. Color: Pigments shall be suitable for potable water, light stable, not soluble in water, with typical colors of phthalo green, blue-green, white, or as listed in the Schedule. 5. Minimum Physical Requirements: All laminates shall meet the minimum physical properties of AWWA F102, Table 2 - Minimum Physical Properties of Laminates. B. Weir Plates: 1. Provided with oversized mounting holes to allow vertical or horizontal adjustment. 2. Weir Plate Openings: Page 2 of 4 FIBERGLASS WEIRS AND BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06330 Fiberglass Weirs and Baffles_Final.docx

3 a. V-Notch: Weir plates with 90 spaced at intervals center to center, within ±1/16-inch, as shown on the Drawings or listed in the Weir and Baffle Schedule. Depth shall be as shown on the Drawings or listed in the Weir and Baffle Schedule, within ±1/8-inch. The angle of the V-notch shall 90 ±2. b. Rectangular or Straight-Edge Weir: Rectangular weir plates shall be straight, varying not more than ±1/32-inch in 12 feet. Draft angle across the 1/4-inch dimension shall not exceed 7. c. Thickness not less than 3/16-inch. 3. Provision for Attachment: a. Weir-Plate Anchor Bolt Holes. Anchor bolt holes for wall mounting shall be round or square, a minimum of 2-inch dimension ±1/8, and a maximum dimension as shown on the drawings. Center to center dimensions between holes shall be not more than the distance recommended by the manufacturer, or more than 24-inches on center. Bolt spacing shall start near the ends of weir plates, as shown on the drawings, to prevent flaring out from the surface. b. Plate Washers. Plate washers shall be cut from 3/16-inch flat plate 304 stainless steel at a minimum dimension of 4-inches square and a maximum dimension as shown on the drawings. c. Slots: Slots for mounting scum baffles to brackets shall not be more than 1/16- inch wider than the bolts, and shall provide for a minimum adjustment of ±1/2-inch, after allowing for the diameter of the bolt. d. Thermal Expansion/Contraction: In compliance with the requirements or AWWA F102. C. Scum-Baffles: 1. Countersinking Provisions: Scum-baffle mounting holes shall be countersunk to a depth that allows the flat head bolts to be flush or below the surface. 2. Scum-Baffle Mounting Brackets Dimensions: Designed and fabricated to meet the physical requirements of AWWA F102. a. Length of the bracket bases shall not be less than 6 inches. b. Depths shall be such that the mounted scum baffle is not less than 8 inches from the v-notch weir. c. Thickness shall not be less than 3/8-inch. 3. Mounting Bracket Spacing: a. Straight Walls: 24-inch maximum. b. Curved Walls: 48 inches maximum. c. Adjustment Provisions: Maximum 3/4-inch adjustment in any plane. D. Finish and Appearance: 1. Surface finish shall be smooth and resin-rich. 2. Surfaces and edges shall be free from porosity, voids, dry glass, or delamination. 3. Allowable cosmetic defects shall be in accordance with AWWA F102, Table 1 - Allowable Cosmetic Defects of Fiberglass Components. 2.3 ACCESSORIES A. Lap Plates: Provide as required to secure ends of scum baffle plates. B. Mounting Fasteners: Provide Type 316 stainless steel fasteners. 1. Mounting Bolts and Nuts: Mounting bolts and nuts shall be ½-inch x 4 ¼ - inches with capsule epoxy anchors for clarifier weir and scum baffle mounting or 5/8 inch x 6- inch with capsule epoxy anchors for straight-edge weir mounting. 2. Attachment Bolts and Nuts: All attachment bolts and nuts for scum baffles shall be 316 stainless steel at minimum sizes shown on the drawings or as recommended by the manufacturer. 2.4 SOURCE QUALITY CONTROL A. Factory Tests: Test and inspect fiberglass components in accordance with AWWA F102, Section Page 3 of 4 FIBERGLASS WEIRS AND BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06330 Fiberglass Weirs and Baffles_Final.docx

4 PART 3 - EXECUTION 3.1 EXAMINATION A. Examine fiberglass components before installation. Reject fiberglass components that do not comply or have surface defects exceeding the requirements listed in AWWA F102, Table 1 - Allowable Cosmetic Defects of Fiberglass components. B. Verify that dimensions are correct and project conditions are suitable for installation. C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION GENERAL A. Install fiberglass components in accordance with manufacturer s instructions. B. Ensure fiberglass components are installed plumb and true, free of warp or twist, within tolerances specified by the manufacturer and as indicated on the Drawings. C. Adjust weir plate elevation for the flow indicated or directed by the ENGINEER. D. When necessary to adjust lengths of plates due to field conditions and when approved by the ENGINEER, seal cut or machined edges thus exposed with polyester resin. Excessive cutting will not be acceptable. 3.3 ADJUST AND CLEAN A. Clean surfaces in accordance with manufacturer s instructions. B. Remove trash and debris, and leave site in a clean condition. 3.4 WEIR AND BAFFLE SCHEDULE A. The Weir and Baffle Schedule located after END OF SECTION is part of this Section. END OF SECTION WEIR AND BAFFLE SCHEDULE Item Location Weir Description Resin Color Final Clarifier D Effluent Launder Final Clarifier D Effluent Launder Aeration Basin D Influent and Effluent Boxes 4 Post Aerator Effluent V-notch, 2-1/2 depth, 6-inch centers Type 1 Baffle Type 1 White Rectangular or straight-edge weir, see Detail 430 Rectangular or straight-edge weir, see Detail 430 Type 1 Type 1 Blue-Green or Phthalo-Green White White Page 4 of 4 FIBERGLASS WEIRS AND BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06330 Fiberglass Weirs and Baffles_Final.docx

5 SECTION DENSITY CURRENT BAFFLES PART 1 - GENERAL 1.1 RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes: The design, fabrication, and installation of density current baffles as shown on the Drawings and described herein. B. Related Sections: 1. Section "Fiberglass Weirs and Baffles" for fiberglass-reinforced weirs and baffles. 1.3 REFERENCES AND DEFINITIONS A. References: 1. American Water Works Association (AWWA): a. F101 - Standard for Contact-Molded, Fiberglass-Reinforced Plastic Wash Water Troughs and Launders B. Definitions: 1. Contact Molding: Used herein to include hand lay-up or a combination of hand layup and spray-up manufacturing processes. 2. Cosmetic Defect: A blemish that has no effect on the ability of the component to meet the structural design and production test requirements of AWWA F101 Standard. Should the blemish or the activity of plugging, grinding, or repairing of such blemish or the activity of plugging, grinding, or repairing the blemish caused the component to fail these requirements, then the blemish shall be considered a structural defect. 1.4 PERFORMANCE REQUIREMENTS A. General Performance: Density current baffles shall withstand the forces imposed during water treatment operations without failure due to defective manufacture, fabrication, installation, or other defects in construction. B. Thermal Movements: Allow for thermal movements from ambient and surface temperature changes without exceeding deflection or strain in Accordance with the requirements of AWWA F Temperature Change (Range): -10 F to 110 F. 1.5 SUBMITTALS A. Product Data: For each type of product indicated. Include construction details, material descriptions, dimensions of individual components and profiles, and finishes for Insert product. B. Shop Drawings: For Process Treatment Unit. Include plans, elevations, sections, details, and attachments to other work. 1. Detail equipment assemblies and indicate dimensions, weights, loads, required clearances, method of field assembly, components, and location and size of each field connection. C. Qualification Data: For qualified manufacturer. D. Product Certificates: For each type of product, provide Affidavit of Compliance from manufacturer. 1.6 DESIGN REQUIREMENTS A. Density Current Baffle System: Page 1 of 4 DENSITY CURRENT BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06340 Density Current Baffles_Final.docx

6 1. Consist of a series of baffles segments that are attached to the wall of the basin, forming an inclined, shelf-like surface around the interior perimeter of the basin. 2. Each segment shall be molded to follow the curvature of the basin. 3. The width, inclination angle and mounting location of the baffle segments shall be determined based upon the clarifier configuration in order to provide optimum performance. 4. The baffle segments shall be of a design permitting adjacent segment connection without field cutting. 5. Provisions shall be made for attachment to the basin wall, interconnection of baffle segments, as well as supports provided for a rigid structure. 6. The baffle system shall be capable of supporting its own weight, plus snow and wind loads in the event the basin is out of service. The baffle system shall also be designed to withstand a buoyant force load equal to the weight of the water displace from the volume beneath the baffle. 7. The angle of the working surface of each baffle shall be sufficient in pitch and width to divert the flow and to create a self-cleaning action of the baffle itself. 8. Provision shall also be made to vent gases that may form beneath the baffle. 1.7 QUALITY ASSURANCE A. Manufacturer Qualifications: All equipment shall be the product of a manufacturer having at least ten (10) U.S. installations of the type being proposed, each with a minimum of 5 years of satisfactory service. B. Source Limitations: Obtain from single source. 1.8 DELIVERY, STORAGE, AND HANDLING A. Deliver, handle and store fiberglass components in accordance with AWWA F101, Section 6: Delivery, the manufacturer s written instructions and the requirements of Division 1 Section Product Requirements. 1.9 PROJECT CONDITIONS A. Field Measurements: Verify actual dimensions of construction contiguous with weirs and baffles by field measurements before fabrication. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. Bedford Reinforced Plastics, Inc.; Bedford, PA. 2. Fiberglass Fabricators, Inc.; Smithfield, RI. 3. MFG Water Treatment Products Company; Union City, PA. 4. Warminster Fiberglass Company; Southampton, PA. 2.2 FABRICATION REQUIREMENTS A. The Density Current Baffle System shall consist of a series of baffle panels that are attached to the wall of the clarifier to form an inclined, shelf-like surface around the entire inner periphery of the tank. Each panel shall be molded of corrosion-resistant, UV-treated fiberglass. The panel shall have dimensions shown in the drawings and shall be curved to follow the curvature of the clarifier tank. The width, inclination angle and mounting location of the baffle shall be determined based upon the clarifier configuration in order to provide optimum baffle performance. The panels shall be designed such that adjacent panels fit together without overlapping or cutting, and the completed baffle when installed, has a wellengineered and professional appearance. B. Provision shall be made to attach the panels to the clarifier wall and support them at the proper angle using a triangular panel bracket or internal panel support system. The panel and bracket shall be molded as an integral part of each panel, forming a baffle module, or separate Page 2 of 4 DENSITY CURRENT BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06340 Density Current Baffles_Final.docx

7 06340 Page 3 of 4 DENSITY CURRENT BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06340 Density Current Baffles_Final.docx panels and brackets may be supplied. If the panel and bracket are molded as an integral unit with adequate stiffeners, only one bracket is required per panel. Panel support system must meet loadings as stated in Paragraph 2.2 C. A specially formed "free-end" bracket shall be provided to support the free end of the last panel where the run of panels is interrupted by an obstruction. Panels may be cut as required to fit around obstructions. Any penetrations into steel support members shall be covered with fiberglass resin to prevent corrosion. All hardware shall be Type 316 stainless steel including fasteners, washers and anchors. Wedge type concrete anchors are not acceptable. C. A method of interconnecting adjacent panels shall be provided such that the entire assembly forms a rigid structure capable of supporting its own weight plus snow and wind loads in the event the tank is out of service. The baffle shall also be designed to withstand a buoyant force load equal to the weight of the water displaced from the volume beneath the baffle. The angled working surface of each baffle shall be sufficient in pitch and width to divert the flow and to create a self-cleaning action of the baffle itself. Provision shall also be made to vent gases that may form beneath the baffle through 2 radius half round openings molded into the panel at its highest point. D. Description: 1. Provide contact molded, fiberglass-reinforced inclined, density current baffle system for attachment to basin walls of a clarification unit constructed in accordance with the requirements of AWWA F Materials: Comply with the requirements of AWWA F101, Section 4: Requirements. 3. Resin: a. Type 1: Commercial-grade polyester thermosetting resin for general purpose applications. b. Type 2: Commercial-grade, chemical resistance polyester thermosetting resin. c. Provide Ultraviolet Stabilizers. 4. Color: Pigments shall be suitable for potable water, light stable, not soluble in water, with typical colors of thalo green, blue-green, white, or as listed in the Schedule. 5. Metallic Components: When metal reinforcements are used, they shall completely encapsulate with a minimum 1/8-inch thick laminate. 6. Minimum Physical Requirements: All laminates shall meet the minimum physical properties of AWWA F101, Table 6 - Minimum Physical Properties of Laminates. E. Laminate Construction and Design: 1. Laminate construction shall consist of a molded or inner surface, a structural layer, and an exterior or outer surface, with integral metallic structural elements as required. 2. Construction shall comply with the requirements of AWWA F101, Section 4: Requirements and the following: a. Molded of fiberglass-reinforced polyester resin composite laminate. b. Thickness: 3/16-inch minimum. c. Gel Coat: 20-mil minimum thickness, each surface. d. Mold face sloping inward and downward to resist solids build-up. e. Molded integral mounting flange, 1/4-inch thick, along top edge, factory drilled for anchors. f. Provide factory drilled holes in mounting flange, 8-inch centers, for attachment to basin wall. g. Molded integral reinforcing flange, 1/4-inch thickness, along bottom edge to resist sag and uplift. h. Nominal Length: 10-feet. i. Circular Basins: Mold baffle segments curved for basin diameter indicated on Drawings. j. Provide factory drilled holes for end-to-end connection of baffle segments in field. k. Resin coat all cut edges and drilled holes. 3. The density current baffles shall be designed to support, within stress and deflection limitations, the loadings as listed in the design section of AWWA F101. These loading include, but not limited to: a. Downward vertical loads. b. Buoyant loadings. c. Lateral loadings.

8 d. Thermal stress. e. Torsional stability. F. Finish and Appearance: 1. Surface finish shall be smooth and free from porosity, voids, dry glass, or delamination. 2. Allowable cosmetic defects shall be in accordance with AWWA F101, Table 5 - Allowable Cosmetic Defects. 2.3 ACCESSORIES A. Mounting Brackets: 1. Provide angle brackets fabricated of same composition as baffle segments. 2. Provide a minimum of two angular support brackets, 3/8-inch x 3-inch x 3-inch minimum, for each baffle segment. Install on 5-foot centers. B. Mounting Fasteners: Provide Type 316 stainless steel fasteners. 1. Epoxy Anchor Bolts: 1/2-inch diameter. 2. Fasteners: 1/4-inch minimum size. 2.4 SOURCE QUALITY CONTROL A. Factory Tests: Test and inspect fiberglass components in accordance with AWWA F101, Section 5; Verification. PART 3 - EXECUTION 3.1 EXAMINATION A. Examine fiberglass components before installation. Reject fiberglass components that do not comply or have surface defects exceeding the requirements listed in AWWA F101, Table 5 - Allowable Cosmetic Defects. B. Verify that dimensions are correct and project conditions are suitable for installation. C. Proceed with installation only after unsatisfactory conditions have been corrected. 3.2 INSTALLATION GENERAL A. Install fiberglass components in accordance with manufacturer s instructions. B. Ensure fiberglass components are installed plumb and true, free of warp or twist, within tolerances specified by the manufacturer and as indicated on the Drawings. C. Install two mounting brackets per baffle segment, equally spaced. D. When necessary to adjust lengths of components due to field conditions and when approved by the ENGINEER, seal cut or machined edges thus exposed with polyester resin. Excessive cutting will not be acceptable. 3.3 ADJUST AND CLEAN A. Clean surfaces in accordance with manufacturer s instructions. Remove trash and debris, and leave site in a clean condition. END OF SECTION Page 4 of 4 DENSITY CURRENT BAFFLES \\aus1.aus.apai\share\projects\0933\003-04\specs\100% Spec\Division 06\06340 Density Current Baffles_Final.docx

9 PART 1 - GENERAL 1.1 RELATED DOCUMENTS SECTION FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 1 Specification Sections, apply to this Section. 1.2 SUMMARY A. Section Includes fiberglass reinforced plastic (FRP): 1. Grating and Stair Treads 2. Grating Embed Frames 3. Structural Fabrications 4. Ladders and Cages B. Scope of Work: The CONTRACTOR shall furnish all labor, materials, equipment, and incidentals as required to properly install the entire fiberglass reinforced plastic (FRP) products specified herein. Specific applications include: 1. Ladders and Cages: a. Bulk Alum Storage Tanks. b. Bulk Sodium Hypochlorite Storage Tanks. c. Bulk Sodium Bisulfite Storage Tanks. 2. Structural Fabrications and Grating: a. Alum feed pump table and pipe/equipment mounting rack. b. Sodium Hypochlorite feed pump table and pipe/equipment mounting rack. c. Sodium Bisulfite feed pump table and pipe/equipment mounting rack. d. Polymer feed area at the Sludge Dewatering Facility. e. Containment sump cover around the current and future Belt Presses at the Sludge Dewatering Facility. 3. FRP Grating at the following locations: a. Alum storage tank containment sump and feed pump trench drain. b. Sodium Hypochlorite tank containment sump and feed pump trench drain. c. Sodium Bisulfite containment sump and feed pump trench drain. d. Floor drains at the Sludge Dewatering Facility. C. Related Sections: 1. Division 5 Section Anchor Bolts and Concrete Inserts. 1.3 REFERENCES A. ASTM International, Inc. (ASTM): 1. D Rate of Burning and/or Extent and Time of Burning of Self-Supporting Plastics in a Horizontal Position 2. D Practice for Classifying Reinforced Plastic Pultruded Shapes According to Composition 3. D Specification for Dimensional Tolerance of Thermosetting Glass-Reinforced Plastic Pultruded Shapes 4. D Practice for Classifying Visual Defects in Thermosetting Reinforced Plastic Pultruded Products 5. E 84 - Surface Burning Characteristics of Building Materials 6. F Specification for Fiberglass (GRP) Pultruded Open-Weather Storm and Guard, Square Railing Systems B. Occupational Safety and Health Act (OSHA): 1. 29CFR Code of Federal Regulations Page 1 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

10 C. Underwriters Laboratories, Inc. (UL): Standard for Safety Tests for Flammability of Plastic Materials for Parts in Devices and Appliances 1.4 PERFORMANCE REQUIREMENTS A. Design Requirements: 1. Environmental Conditions: Fiberglass fabrications will be exposed to severe environmental conditions including temperatures to 120 o F with 100 percent humidity and hydrogen sulfide gases. All fiberglass components shall have UV inhibitors. 2. Structural Performance: FRP products shall withstand the effects of gravity loads and the following loads and stresses within limits and under conditions indicated: a. OSHA -29 CFR as it pertains to worker safety and walking-working surfaces for stairs, ladders, handrail, and platforms. b. Design all grating support system components based on the load and deflection criteria specified herein. c. Design components to support water lines, electrical conduits, control panels, light posts and other items shown on the Plans. d. FRP Grating: Designed for applicable dead load plus a walkway live load of 100 lbs per square foot Uniform Load. Deflection shall not exceed 1/4-inch. e. FRP Structural Shapes: Designed into structures, supporting all applicable loads. Deflection shall not exceed L/180. f. FRP Grating and Stair Treads: Designed to support a uniform load of 100 pounds per square foot with maximum deflection of L/180, but not over 1/4-inch. Provide extra stiffness around openings. g. ADA Compliant Grating: Provide maximum gap between bars of 1/2-inch, designed for 200 lbs per square foot live load with maximum deflection of 1/4-inch. h. Fiberglass Handrail Posts and Toe Plates: 1) Designed in accordance with OSHA with a minimum safety factor of 3 for the load requirements. 2) Top rail shall withstand a load of the greater of 200 pounds or 50 pounds per foot applied in any direction at the top of the railing. 3) All handrails shall comply with ASTM F i. Ladder Rungs: Provide a non-slip surface. 1.5 SUBMITTALS A. Product Data: For each type of product indicated. 1. Catalog information and catalog cuts showing materials, design tasks, and showing load, span, and deflection; include manufacturer's specifications. 2. Resin material data, safety sheet, and chemical resistance charts. 3. Color selection chart or samples. 4. Information regarding each type of grating and handrail connection. B. Shop Drawings: 1. Include plans, elevations, sections, details, and attachments to other work. 2. Show all FRP materials as required and include all dimensions, connections, fasteners, tolerances, assembly and installation details as required. C. Informational Submittals: 1. Manufactures installation instructions. 2. Handling and storage requirements. 3. Qualification Data: For qualified manufacturer. 4. Certificate of Compliance: For each type of product proposed from manufacturer. 5. Product Test Reports: Based on evaluation of comprehensive tests performed by an independent laboratory, dated within two years of submittal, of a fire retardant test report on type of grating proposed. 6. Field quality-control reports. 7. Warranty: Sample of special warranty Page 2 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

11 1.6 QUALITY ASSURANCE A. Manufacturer Qualifications: 1. All items to be provided under this Section shall be furnished only by manufacturers having a minimum of ten (10) years experience in the design and manufacture of similar products and systems. 2. Additionally, if requested, a record of at least five (5) previous, separate, similar successful installations in the last five (5) years shall be provided. 3. Manufacturer shall be certified to the ISO standard. B. The Installing Contractor shall; assure that all field dimensions are taken accurately and communicated properly to the FRP Fabricator, that other trades will not affect a proper installation of the FRP, and that all manufacturer s instruction and recommendations are followed. C. Surface-Burning Characteristics: 1. As determined by testing identical products according to ASTM E 84 by a qualified testing agency. Identify products with appropriate markings of applicable testing agency. a. Flame-Spread Index: 25 or less. 2. Gratings shall also have tested burn time of less than 30 seconds and an extent of burn rate of less than or equal to 10 millimeters per ASTM D PROJECT CONDITIONS A. Field Measurements: Verify actual locations of walls and other construction contiguous with FRP fabrications by field measurements before fabrication and indicate measurements on Shop Drawings. 1. Established Dimensions: Where field measurements cannot be made without delaying the Work, establish dimensions and proceed with fabricating metal fabrications without field measurements. Coordinate wall and other contiguous construction to ensure that actual dimensions correspond to established dimensions. 2. Provide allowance for trimming and fitting at site. 1.8 COORDINATION A. Coordinate installation of anchorages for metal fabrications. Furnish setting drawings, templates, and directions for installing anchorages, including sleeves, concrete inserts, anchor bolts, and items with integral anchors, which are to be embedded in concrete or masonry. Deliver such items to Project site in time for installation. 1.9 DELIVERY, STORAGE, AND HANDLING A. Deliver, handle and store pumping system components in accordance with manufacturer s written instructions and the requirements of Division 1 Section Product Requirements. B. Delivery of Materials: 1. Ship FRP items factory assemble as practical, with ladders fully shop-fabricated and assembled. 2. Package and clearly tag parts and assemblies that are of necessity shipped unassembled in a manner that will protect the materials from damage, and facilitate identification and final assembly in the field. C. Storage of Products: 1. All materials shall be carefully handled to prevent them from abrasion, cracking, chipping, twisting, other deformations, and other types of damage. Store adhesives, resins, and their catalysts and hardeners in dry indoor storage facilities between 70 o F and 85 o F Page 3 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

12 2. If FRP materials are not to be installed immediately, then store to prevent twisting, bending, breaking, or damage of any kind. Keep material covered to prevent unnecessary exposure to UV WARRANTY A. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace FRP grating, handrails and structural fabrications that fail(s) in materials or workmanship within specified warranty period. 1. Warranty Period: Three (3) years from date of Substantial Completion. PART 2 - PRODUCTS 2.1 MANUFACTURERS A. Manufacturers: Subject to compliance with requirements, available manufacturers offering products that may be incorporated into the Work include, but are not limited to, the following: 1. American Grating, LLC 2. Morrison Molded Fiberglass Company (MMFG). 3. Fibergrate Composite Structures, Inc. 4. International Grating, Inc. 5. Seasafe, Inc. 6. IKG/Borden. 7. Chemgrate Corporate. 2.2 GENERAL REQUIREMENTS A. All FRP items furnished under this Section shall be composed of fiberglass reinforcement and resin in qualities, quantities, properties, arrangements and dimensions as necessary to meet the design requirements and dimensions as specified in the Contract Documents. B. FRP items shall be constructed of strand roving, transverse mat, and a synthetic surface veil, including ultraviolet light inhibitors. C. All finished surfaces of FRP items and fabrications shall be smooth, resin-rich, and free of voids without dry spots, cracks, crazes or unreinforced areas. All glass fibers shall be well covered with resin to protect against their exposure to corrosives, wear or weathering. D. All FRP products shall be flame retardant per ASTM E-84 Class 1 Flame Spread of 25 or less. Gratings shall also have tested burn time of less than 30 seconds and an extent of burn rate of less than or equal to 10 millimeters per ASTM D MATERIALS A. Description: 1. FRP structural shapes and handrail systems shall be a composite of glass reinforcements and resin mixture of approximately 45 percent resin to glass ratio, or as required achieving desired properties, manufactured by the pultrusion process, unless otherwise noted, and free of visual defects. Dimensional tolerances shall conform to ASTM D Fittings shall be made from solid blocks derived from pultruded components. The grating shall be pultruded fiberglass. B. Resins: Premium grade, chemical resistant, thermosetting vinyl ester containing a UV inhibitor and a flame retardant. Provide synthetic surface veil and polyurethane coating protection system on all components Page 4 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

13 C. Fiberglass reinforcements shall be Type E glass, unless noted otherwise herein, in continuous glass fiber strand roving, continuous glass strand mats, and surface mats which will produce a resin rich surface for maximum chemical resistance. Assembled grating panels shall have a permanently bonded grit, baked epoxy, and anti-skid surface. D. Provide smooth surfaces with no exposed glass fibers and free of cracks, rips, and blisters. Manufacture pultruded sections with a colored resin so that the color is throughout the section. Use one color for all portions of the system. Coat all cut ends with a compatible resin or a polyurethane coating in accordance with manufacturer's recommendations. E. All anchors, fasteners and hardware shall be Type 316 stainless steel. All grated, walkway, ladder rungs, and stair tread surfaces shall have a non-skid grit top surface using course epoxy grit. F. Products shall have the following minimum structural properties: Property Test Method ASTM Longitudinal Direction Transverse Direction Tensile Stress. psi D ,000 7,000 Tensile Modules, psi D x x 10 6 Compressive Stress, psi D ,000 15,000 Compressive Modulus, psi D x x 10 6 Flexural Stress, psi D ,000 10,000 Flexural Modulus, psi D x x 10 6 Modules of Elasticity, psi Full Section 2.8 x GRATING AND STAIR TREADS A. General: 1. Grating may be either molded sheets or fabricated of pultruded systems. 2. Assembled using a locking cross-rod design that makes a permanent connection between the cross-rod and bearing bar, and shall completely bonded into a one-piece panel. B. Pultruded Grating: 1. Pultruded type, I-Bar shaped according to ASTM 3647, Type GCOF, pultruded with ASTM D 3917 dimensional tolerances and defects not exceeding requirements of ASTM D 4385, Level II. 2. Grating sized by the manufacturer, with bearing bar spacing not to exceed 1-inch, a maximum 50 percent open area, and cross tie spacing not to exceed 6 inches, unless permitted by the ENGINEER. 3. Minimum depth 1-1/2 inch. C. Molded Grating: Fabricated by interweaving continuous glass filaments in both directions, perpendicular to each other and impregnating them with a thermosetting resin. Provide 1-1/2 inch square by 1-1/2 inch or 1-inch thick grid pattern. Minimum depth 1-1/2 inch Page 5 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

14 D. Requirements: Provide 1-1/2-inch minimum bearing surface, with a minimum bearing of 1-inch after maximum displacements to restraints. Anchors shall be spaced at a maximum of 18 inches on centers on each support. Grating shall have a maximum glass content of 70 percent. 1. Color: Gray. 2. Grating and Stair Treads shall be made from pultruded bearing bars and cross rods. 3. Stair Treads shall have a square tube nosing. 4. Grating shall have a slip resistant epoxy grit surface. 5. Grating clips shall be Type 316 stainless steel. Minimum of 4 clips per piece. E. Bolts and Connectors: 1. Corrosion-resistant FRP or Type 316 stainless steel. 2. Size and strength to meet UBC requirements. 2.5 GRATING EMBED FRAMES A. Requirements: 1. All FRP Grating set in concrete openings shall have a FRP embed angle frame. 2. Embed angle frame to be EBA-10, EBA-15, or EBA-20 as required for the grating specified above. 3. Embed angle have continuous integral anchor. 4. FRP embed angle frames shall be Vinylester. 2.6 STRUCTURAL COMPONENTS A. Provide all necessary beam cross-members, connection angles, fasteners and mounting brackets, designed and sized by manufacturer. Structural shapes shall be fabricated with good workmanship, closely fitted joints, and finished true to line and in accurate position to permit installation and proper joining of parts in the field. 1. Minimum Thickness: a. Primary structural components (main beams) shall be 3/8-inch. b. All other components shall be 1/4-inch. 2. Field verify dimensions and arrangement prior to fabrication. 3. Use Type 316 stainless steel bolts and washers. 4. All joint surfaces to be bonded shall be abraded to remove surface gloss and be free of burrs or other foreign materials that would prevent proper adhesion. 5. Use high-strength epoxy adhesives designed for FRP use and mechanical fasteners. 6. All pieces to have easily identified part numbers or piece marks. 7. Shop assemble pieces into the largest practical assembly suitable for shipping. B. Deflection and Safety Factors: 1. Deflection Criteria: Not to exceed L/ Safety Factors: Minimum ratios of the ultimate stress to the allowable static service stress: a. Flexural Members: 2.5. b. Compression Members: 3.0. c. Shear: 3.0. d. Connections: Minimum design safety factors for dynamic or impact loads shall be twice the values for static service loads. C. Loads: lbs per square foot uniform live load over platform. 2. Static and dynamic loads for equipment shown. 2.7 LADDERS AND CAGES A. Ladders: Page 6 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

15 1. Ladder Rails: 2 x 2 x ¼ square tube; ladder rungs 1 inch diameter solid round. 2. Ladder Rungs: a. Penetrate inside wall of ladder rail tube, countersunk into outside wall of ladder rail tube, providing support for the ladder rung in 4 places. b. This connection is to be fully bonded and with epoxy adhesives and pinned to prevent rung rotation. c. Provide slip-resistant quartz epoxy grit surface on ladder rungs. 3. Ladder Stand-off Brackets: FRP and installed on 6 feet centers maximum. 4. Ladder Base Mount Brackets: FRP construction with bolts of Type 316 stainless steel. 5. Color: Safety yellow. B. Ladder Cages: 1. Fabricated from FRP Hoops and Straps. 2. FRP Hoops are to be 3 x ¼ preformed FRP. Hoop spacing shall be a max. of 4-0 on center. 3. FRP Straps are to be 2 x ¼ FRP and are to be spaced at 9 on center. 4. Hoops and Straps are to be bonded with epoxy adhesives and riveted with Type 316 stainless steel rivets. PART 3 - EXECUTION 3.1 INSTALLATION A. Install all fiberglass components in accordance with the manufacturer's instructions, shop drawing, Drawings and Division 1 Section Execution Requirements. All items shall be shop fabricated to the required dimensions and tolerances. Joints to be completed in the field shall be prepared in the factory with correct bevels, and supplied with kits and instructions for completing joints. All cut or machined edges shall be ground smooth and sealed with a compatible bonding resin. Provide and install necessary internal and external joint reinforcements, connections and anchors. B. Components shall be installed accurately to alignments and elevations shown with bridge and handrails level, and handrail posts plumb, to within 1/4-inch. Anchor the posts securely as recommended by the fiberglass bridge manufacturer. Install the existing or replacement water lines, conduits, light posts, control panels and other items as shown on the drawings. C. Erect floor gratings in place on supporting members with full, uniform bearing on supports. Wedges or shimming devices will not be permitted. Lock grating panels securely in place with removable hold-down fasteners. Not more than 1/4-inch clearance shall exist between grating sections or grating frames. Each section shall be readily removable, except as indicated on drawings. Adjacent sections shall fit together with transverse members forming uninterrupted straight line. D. Provide openings and holes as required. Provide openings in gratings indicated for protrusions as required for installing piping, wiring, and equipment. End cuts shall be coated with resin per the manufacturer's recommendations. Gratings which fit around protrusions shall be discontinuous at centerline of opening so each section of grating is readily removable. Gratings shall be fabricated free from warps, twists, or other defects which affect appearance and serviceability. No section of grating shall exceed 125 pounds. E. All fiberglass shall be cleaned of foreign material in accordance with manufacturer's instructions. Materials containing defects, such as nicks, gouges, blisters, sharp projections, delaminations or exposed fibers shall not be accepted until repaired or replaced as directed by ENGINEER and OWNER. END OF SECTION Page 7 of 7 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS \\AUS1.AUS.APAI\SHARE\PROJECTS\0933\003-04\SPECS\100% SPEC\DIVISION 06\06600 FIBERGLASS REINFORCED PLASTIC GRATING, HANDRAILS, AND STRUCTURAL FABRICATIONS_FINAL.DOCX

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