Specifications for FRP Covers


Download FRP Covers Specifications


1.1 Work of This Section

1. The work of this Section covers the design, supply, delivery and installation of the insulated Fiberglass Reinforced Plastic (FRP) covers and accessories including all required supports and covers hold in place system.

2. Unit Responsibility: The work requires that the fiberglass reinforced plastic covers, complete with all accessories be the end product of one responsible FRP cover manufacturer or responsible system supplier. Unless otherwise indicated, the Contractor shall obtain each components from the responsible supplier of the insulated covers, which supplier shall furnish all components and accessories of the system to enhance compatibility, ease of installation and as necessary to place the covers in conformance with the specified requirements, features and functions without altering or modifying the Contractor’s responsibilities under the Contract Documents. The Contractor is responsible to the Region for providing the FRP covers as specified herein.

1.2 Related Sections

1. Division 1 – General Requirements

1.3 Measurement and Payment

1. The work outlined in this Section shall be included in the lump sum price for Item No. XXXX in the Bid Form.

1.4 References

1. Ontario Building Code
2. ASTM D4385 and CAN-CGSB 41-GP-22
3. ASTM E84 Standard Method of Test for Surface Burning

1.5 Definitions

1. FRP: Fiberglass Reinforced Plastic.

1.6 Submittals

1. General: Administrative, shop drawings, samples, quality control, and closeout submittals shall conform to the requirements of Section 01300 – submittals.

2. In addition to the requirements of Section 01300 – Submittals, submit the following additional detailed shop drawing information:

1. Fabricator’s catalog information, descriptive literature, specifications, and identification of materials of construction, including complete resin system information.
2. Letter from resin manufacturer stating that selected resin is suitable for intended service.
3. Catalog information and cuts for all manufactured items, highlighted to show items proposed to be installed.
4. Complete design calculations for covers, supports, and appropriate accessories, including safety factors used.
5. All dimensions and location of all major elements of the FRP covers and accessories, critical clearance requirements, and support dimensions requirements.
6. Recommended bolt torque for bolted FRP connections.

3. Design drawings and calculations shall be designed, stamped and sealed by a professional engineer registered in the province of Ontario.
4. Samples: Laminate Sample representative of production quality of surface finish and visual imperfections.
5. Quality Control Submittals: In addition to the requirements of Section 01300 – Submittals, provide the following quality control information.
1. Fabricator’s Certificate of Compliance with fabrication requirements covers.
2. Qualifications of Fabricator’s Quality Assurance Supervisor.

3. Quality Assurance Inspection:
1. Initial QA Inspection Report.
2. Certification of Factory Testing.

4. Manufacturer’s Certificate of Proper Installation in accordance with Section 01640 – Manufacturers’ Services.

1.7 Quality Assurance

1. Installer: Trained and approved by the FRP cover manufacturer and having a minimum of five years of experience in the installation FRP covers and can show evidence of satisfactory completion of project of similar size, scope and type. Provide letter of certification from the manufacturers stating the installer is a certified installer of its products and is familiar with proper procedures and installation requirements required by the manufacturer. The manufacturing of the cover shall not be initiated until the Consultant has received proof of certification from the installer carried for the project.

2. Maintenance Seminar: Instruct the Region’s operating staff on proper care, cleaning and maintenance procedures of the FRP covers.

3. Manufacturer’s Site Inspection: Have the manufacturer’s technical representative inspect the Work at suitable intervals during installation and upon the conclusion of the Work of this Section, to ensure that the Work is correctly installed. Submit manufacturer’s inspection report and verification that the Work of this Section is correctly installed.

1.8 Delivery, Storage, and Handling

1. In accordance with Section 01600 – Material and Equipment.


2.1 Approved Manufacturers

1. Access Industrial Inc., 5205 Timberlea Blvd, Mississauga Ont.
2. Or Approved Equal

2.2 Service Conditions
1. Location: Outdoors

2. Existing Rectangular Secondary Clarifier covers: +/- 4.8 KPa

3. All filed dimension for the existing secondary clarifiers shall be filed confirmed by the Contractor and the cover supplier prior to fabrication of covers. The field dimensions shall be included with the shop drawing submittals.

4. Covers must have UV resistance

5. Cover suitable for installation in a wet, humid and corrosive environment.

2.3 General

1. The cover shall be self-supporting. The configuration shall be:

1. Separate panels and beams shall be used in conjunction with FRP supports.
2. Include all fixings, hinges, latches, fastening brackets and connections to concrete substrata using grade 316 stainless steel materials.
3. Finished top surface of cover shall be non-slip with a UV resistant surface.
4. Provide hinged access openings for each cover where indicated on the Drawings.

2.4 Design Criteria

1 Engineering Design:

Have the Work of this Section designed and sealed by a professional engineer licensed in the Province of Ontario. Submitting design calculations and drawings not sealed by a professional engineer registered in the Province of Ontario will result is rejection of the submission.

2. Covers shall be designed in accordance with the requirements of the CSA and the Ontario building Code requirements:
1. Live load: 100 psf (4.8 kPa) minimum
2. L/180 allowable maximum deflection
3. Personnel load: 1.2 kN in 300 mm square with an L/240 deflection
4. Seismic, Wind and Snow load: Refer to the Ontario Building Code
5. A design safety factor of 4:1 for allowable stresses shall be met for all load combinations.
3. Horizontal loads shall be contained by both support structures and panel sections.
1. The design and installation shall incorporate provisions for thermal expansion and contraction over an ambient air temperature range of -350C to 500C.
2. Interlocking panels shall not allow penetration of air or water inside the clarifiers headspace provided by the cover.
3. Stresses produced by specified load conditions shall be determined consistent with recognized methods of analysis.

2.5 Materials

1. All materials shall be new and shall be specially designed or selected for the function and service specified. No material may be used for this Contract that has not been approved by the Consultant. Approval for incorporation into the Work will be granted only after the review of the shop drawings and material specifications.

2. All materials used in the fabrication of covers shall be suitable for exposure to potentially corrosive and/or humid foul air streams consistent with municipal wastewater.
3. Resin Requirements:
1. The resin shall be isophthalic Polyester Resin
2. Ultraviolet-light inhibitors shall be added to the laminate for all covers.
3. Use the same resin throughout the entire fabrication.

4. General Requirements:

1. Standard colour shall be gray.
2. Cut edges or drilled holes shall be deburred and sealed with a paraffinated resin solution.
3. Covers: A non-skid gritted surface shall be supplied.
5. Gasketing for the panel joints shall be EPDM or neoprene sponge.

2.6 Openings for Covers

1. Locations to be as shown in the Drawings and to be field confirm by the Contractor.
2. Coordinate location of opening around helical drive and chain and flight drive chain system.
3. Hatches for opening shall be hinged. The hinge shall not cause any tripping hazard for operations staff.

2.7 Supports

.1 Provide all necessary hardware and mounting accessories for the insulated covers.
.2 Provide all support as determined by the cover supplier.

2.8 Accessories

1. Gaskets and Sealants:
1. All panel side laps and perimeter conditions shall have gaskets.

2. Flashing and Trim:

1. Fiberglass flashing shall be isophthalic polyester.
2. Non-radius end flashing shall be factory attached to desk panels. Flashing with a radius or at perimeter of circular tank shall be a separate part and field attached by the Contractor.


3.1 Manufacture

1 Fabrication:

1. Provisions shall be made to provide adequate drainage of water from the cover.
2. The Vendor shall confirm all field measurements with the approved cover fabrication drawing before fabrication is initiated.

2. Shop Assembly:

1. The Vendor shall pre-assemble a minimum of three (3) equal cover segments to a full scale layout to ensure proper fit and assembly. If the cover consists of less than (3) equal segments, the Vendor shall pre-assemble the cover in its entirety.

2. Assembly of panel segments will be such as to allow all bolting to be performed from the exterior of the cover.

3. Anchor bolts, assembly hardware, hinges and lock sets, shall be type 316 stainless steel.

3.2 Manufacturer’s Service

1. The manufacturer is to provide only a factory trained, licensed and experienced service technician for start-up testing, commissioning and training. The manufacturer shall provide, and allow for in his quotation, the services of a factory-trained technical representative to provide the following on-site services:

1. Install all equipment in accordance with Section 11050 – Equipment General Clauses, and the manufacturer’s details and recommendations.

2. Install continuous neoprene gasket in each interlocking rib and where panels rest on supporting structure.
3. Accurately place anchor bolts using templates furnished by the fabricator,
4. Coordinate with the various Subcontractors, Suppliers and manufacturers. No claims for extra work will be entertained for lack of coordination and conflicts.
2. The Owners Operations and Maintenance staff shall be trained on the procedure for sealing the covers and maintaining those seals.