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| | SECTION 16140 |
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| | CORROSION--RESISTANT CONDUIT SYSTEMS |
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| | ** NOTE TO SPECIFIER ** Thomas and Betts Corp., conduits and boxes for corrosive environments.
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This section is based on the products of Thomas and Betts Corp. which is located at:
8155 T&B Blvd.
Memphis, TN 38125
Toll Free Tel: (800) 888-0211
Tel: (901) 252-8000
Fax: (800) 888-0790
E-mail:
Web: www.tnb.com.
[ Click Here ] for additional information.
For nearly 50 years, Thomas & Betts has been a leader in providing the highest-quality, most reliable and innovative connectors and connector systems for the electrical power industry. Our Blackburn® product family includes bolted and mechanical connectors, compression connectors, and grounding clamps and couplings, as well as tools and dies specifically designed to simplify installation. Our Elastimold® product line includes the broadest line of molded separable connectors available today, including the broadest line of tapping, terminating, splicing, isolating, testing and grounding products for 200 to 600 amp systems and medium voltage (5kV to 35kV) applications.
Thomas & Betts offers a broad range of high quality, modular, steel, aluminum and fiberglass-reinforced plastic framing products and accessories suitable for electrical, industrial, construction and infinite other applications. Requiring no welding and available in a variety of finishes including corrosion-resistant, galvanized, pvc-coated or electroplated zinc, T&B's Kindorf®, Superstrut® and Steel City® brands are known to contactors for their superior performance, high quality and versatility.
Thomas & Betts Corp. Boxes & Covers
Thomas & Betts Corp. Cable Ties & Accessories
Thomas & Betts Corp. Conduit & Cable Fittings
Thomas & Betts Corp. Connectors - Industrial Power Control
Thomas & Betts Corp. Connectors - Power & Grounding
Thomas & Betts Corp. Connectors - Telecom/CATV
Thomas & Betts Corp. Electrician Supplies
Thomas & Betts Corp. Hardware & Closures
Thomas & Betts Corp. HVAC
Thomas & Betts Corp. Lighting |
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| | PART 1 | GENERAL |
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| | 1.1 | SECTION INCLUDES |
| | ** NOTE TO SPECIFIER ** Delete items below not required for project. |
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| | | A. | Furnishing, installation, and assembly of PVC coated electrical rigid metal conduit (ERMC) systems and stainless steel fittings. |
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| | 1.2 | RELATED SECTIONS: |
| | ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required. |
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| | | A. | Section 16050 - Basic Electrical Materials and Methods. |
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| | | B. | Section 16070 - Hangers and Supports for Electrical Systems |
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| | 1.3 | REFERENCES |
| | ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section. |
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| | | A. | National Electrical Manufacturers Association (NEMA): |
| | | | 1. | NEMA RN1: Polyvinyl-Chloride (PVC) Externally Coated Galvanized Rigid Steel Conduit and Intermediate Metal Conduit. |
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| | | B. | National Fire Protection Association (NFPA): |
| | | | 1. | NFPA 70: National Electrical Code (NEC). |
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| | | C. | American Society for Testing and Materials (ASTM): |
| | | | 1. | ASTM A 239: Standard Practice for Locating the Thinnest Spot in a Zinc (Galvanized) Coating on Iron or Steel Articles. |
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| | | D. | Underwriters Laboratories, 1nc. (UL): |
| | | | 1. | UL 6: Safety Standard for Rigid Metal Conduit. |
| | | | 2. | UL 514B: Safety Standard for Fittings for Conduit and Outlet Boxes. |
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| | | E. | American National Standards Institute (ANSI): |
| | | | 1. | ANSI C80.1: American National Standard for Rigid Steel Conduit-Zinc Coated. |
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| | | F. | Steel Tube Institute of North America: |
| | | | 1. | Guidelines for Installing Steel Conduit/Tubing. |
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| | 1.4 | SUBMITTALS |
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| | | A. | General: Submit in accordance with Section 01300. |
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| | | B. | Product Data: |
| | | | 1. | Submit manufacturer's descriptive literature and product specifications for each product. |
| | | | 2. | Manufacturer's installation literature and training guide. |
| | | | 3. | Manufacturer's product drawings, when requested. |
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| | 1.5 | QUALITY ASSURANCE |
| | ** NOTE TO SPECIFIER ** Provide qualifications required for the performance and quality of the products. Delete if not required. |
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| | | A. | Manufacturer Qualifications: Products shall be free of defects in material and workmanship. |
| | ** NOTE TO SPECIFIER ** Provide qualifications required for the installation quality of the products and systems. Delete if not required. |
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| | | B. | Installer Qualifications: Installer shall be trained and certified based on the acceptable manufacturers listed requirements. |
| | ** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project. |
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| | | C. | Mock-Up: Provide a mock-up for evaluation of installation techniques and application workmanship. |
| | | | 1. | Finish areas designated by Architect. |
| | | | 2. | Do not proceed with remaining work until workmanship is approved by Architect. |
| | | | 3. | Redo mock-up area as required to produce acceptable work. |
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| | 1.6 | DELIVERY, STORAGE, AND HANDLING |
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| | | A. | Store products in manufacturer's unopened packaging until ready for installation. |
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| | | B. | Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction. |
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| | 1.7 | PROJECT CONDITIONS |
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| | | A. | Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits. |
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| | 1.8 | WARRANTY |
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| | | A. | Product is warranted free of defects in material or workmanship. |
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| | | B. | Product is warranted to perform the intended function within design limits. |
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| | | C. | Field-applied paint coatings on raceway, boxes, plates or fittings shall be excluded from raceway manufacturer's warranty. |
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| | PART 2 | PRODUCTS |
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| | 2.1 | MANUFACTURERS |
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| | | A. | Acceptable Manufacturer: Thomas & Betts Corp., which is located at: 8155 T&B Blvd. ; Memphis, TN 38125; Toll Free Tel: 800-888-0211; Tel: 901-252-8000; Email: request info; Web: www.tnb.com |
| | ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions. |
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| | | B. | Substitutions: Not permitted. |
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| | | C. | Requests for substitutions will be considered in accordance with provisions of Section 01600. |
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| | 2.2 | GENERAL |
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| | | A. | Furnish PVC coated ERMC of size as indicated. If not indicated, the smallest trade size shall be 3/4-inch (19 mm). The PVC coated ERMC system shall include necessary PVC coated fittings, boxes and covers to form a complete encapsulated system. |
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| | 2.3 | MATERIALS / COMPONENTS |
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| | | A. | Ocal PVC Coated Conduit and Fittings as manufactured by Thomas and Betts. |
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| | | B. | Materials and components shall be manufactured and supplied by a single manufacturer. |
| | ** NOTE TO SPECIFIER ** Delete steel conduit if not required. |
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| | 2.4 | PVC COATED RIGID STEEL CONDUIT |
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| | | A. | The PVC coated rigid steel conduit shall be hot dip galvanized inside and out with hot dipped galvanized threads. The interior galvanizing shall be listed per UL 6. The exterior galvanizing shall be listed per UL 6 as primary corrosion protection. Thread protectors shall be used on the exposed threads of the PVC coated conduit. PVC coated ERMC steel conduit shall comply with UL 6, ANSI C80.1, and NEMA RN-1 standards without exception. |
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| | | B. | The PVC coating, in compliance with NEMA RN-1, shall be nominal 40 mils (1 mm) in thickness continuous over the entire length of the conduit except at the threads, and be free of blisters, bubbles or pinholes. PVC shall be UL listed as a primary corrosion protection. |
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| | | C. | A blue urethane coating shall be uniformly and consistently applied to the interior of conduit. This internal coating shall be a nominal 2 mils (.05 mm) thickness. All male threads on elbows and nipples shall be protected by this same application of urethane coating. |
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| | | D. | Coated couplings shall be used with coated conduit. The thickness of the coating on couplings shall be at least equal to the thickness of the coating on the conduit. Each coated coupling shall have a flexible PVC sleeve which extends from each end of the coupling and which will overlap the PVC coating on the conduit when the coupling has been installed on the conduit. The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes up through 2 inches (51 mm). For sizes 2 inches through 6 inches (51 through 152 mm), the length of the sleeve extension(s) shall be at least 2 inches (51 mm). The PVC sleeve shall be a nominal thickness of 40 mils (1 mm) in thickness. The inside diameter of the overlapping sleeve shall be less than the outside diameter of the PVC-coated conduit. |
| | ** NOTE TO SPECIFIER ** Delete aluminum conduit if not required. |
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| | 2.5 | PVC COATED RIDIG ALUMINUM CONDUIT: |
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| | | A. | The PVC coated ERMC- aluminum conduit prior to coating shall be UL listed. |
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| | | B. | The exterior of the conduit shall have a PVC coating of a minimum thickness of nominal 40 mils (1 mm). |
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| | | C. | A blue urethane coating shall be uniformly and consistently applied to the interior of conduit. This internal coating shall be a nominal 2-mils (.05 mm) thickness. All male threads on elbows and nipples shall be protected by this same application of urethane coating. |
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| | | D. | Coated couplings shall be used with coated conduit. The thickness of the coating on couplings shall be at least equal to the thickness of the coating on the conduit. Each coated coupling shall have a flexible PVC sleeve which extends from each end of the coupling and which will overlap the PVC coating on the conduit when the coupling has been installed on the conduit. The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes up through 2 inches (51 mm). For sizes 2 inches through 6 inches (51 through 152 mm), the length of the sleeve extension(s) shall be at least 2 inches (51 mm). The PVC sleeve shall be a nominal thickness of 40 mils (1 mm) in thickness. The inside diameter of the overlapping sleeve shall be less than the outside diameter of the PVC-coated conduit. |
| | ** NOTE TO SPECIFIER ** Delete fittings if not required. |
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| | 2.6 | PVC COATED ORDINARY LOCATION FITTINGS |
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| | | A. | PVC coated ferrous and aluminum fittings for general service and corrosive locations must be UL listed. The PVC coating shall be minimum 40 mils (1 mm) in thickness, and be free of blisters, bubbles or pinholes. Female threads on fittings shall be protected by application of urethane coating. |
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| | | B. | Female ends of PVC coated conduit fittings shall have a flexible PVC sleeve which extends from the female ends of the fitting and which will overlap the PVC coating on the conduit when the fitting has been installed on the conduit. The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes up through 2 inches (51 mm). For sizes 2 inches through 6 inches 951 through 152 mm), the length of the sleeve extension(s) shall be at least 2 inches (51 mm). The PVC sleeve shall be a nominal thickness of 40 mils (1 mm) in thickness. The inside diameter of the overlapping sleeve shall be less than the outside diameter of the PVC-coated conduit. |
| | | | 1. | The PVC coating on all form 8 covers shall form a gasket-like flange of at least 5/16 inch (8 mm) wide and minimum 40 mils (1 mm) covering the top of the fitting around the opening and the bottom of the cover/matting with the flange of the fitting. |
| | | | | a. | A blue urethane coating shall be uniformly and consistently applied to the interior, exterior and threads of all conduit bodies, including but not limited to, form 8 and form 7 conduit bodies. This coating shall be a nominal 2 mil (.05 mm) thickness. |
| | | | | b. | Stainless steel encapsulated screws shall be supplied with all form 7 and form 8 fittings. |
| | | | 2. | Rigid Hubs shall have a nominal 40 mils (1 mm) PVC coating thickness with a nominal 2 mils (.05 mm) of blue urethane on interior and threads. The male threads and locknut of the hub shall remain uncoated. |
| | | | 3. | Liquid-Tight fittings shall have an exterior PVC coating of a minimum thickness of nominal 40 mils (1 mm). |
| | ** NOTE TO SPECIFIER ** Delete if fittings not required. |
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| | 2.7 | PVC COATED HAZARDOUS LOCATION FITTINGS |
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| | | A. | Hazardous location fittings, prior to PVC coating must be UL listed. |
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| | | B. | All female ends of PVC coated conduit fittings shall have a flexible PVC sleeve which extends from the female ends of the fitting and which will overlap the PVC coating on the conduit when the fitting has been installed on the conduit. The length of the sleeve extension(s) shall be at least equivalent to the nominal conduit size for sizes up through 2 inches (51 mm). For sizes 2 inches through 6 inches (51 mm through 152 mm), the length of the sleeve extension(s) shall be at least 2 inches (51 mm). The PVC sleeve shall be a nominal thickness of 40 mils (1 mm) in thickness. The inside diameter of the overlapping sleeve shall be less than the outside diameter of the PVC-coated conduit. |
| | ** NOTE TO SPECIFIER ** Delete if not required. |
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| | 2.8 | PVC COATED STRUT, HANGERS, AND CLAMPS |
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| | | A. | Right angle beam clamps and U-bolts shall be specially formed and sized to snugly fit the outside diameter of the PVC coated conduit. Support products such as ferrous strut, beam clamps, pipe straps, clamp back spacers, conduit clamp hangers and all thread rods shall have minimum 15 mil (0.4 mm) PVC coating by the manufacturer of the ERMC conduit and system components. |
| | ** NOTE TO SPECIFIER ** Delete if not required. |
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| | 2.9 | STAINLESS STEEL FITTINGS |
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| | | A. | Stainless steel Liquid-Tight fittings shall be made of 304-grade stainless steel or better. |
| | ** NOTE TO SPECIFIER ** Delete if not required. |
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| | 2.10 | STAINLESS STEEL STRUTS, HANGERS, ETC. |
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| | | A. | Stainless steel strut, beam clamps, pipe straps, clamp back spacers, conduit clamp hangers and all thread rods shall be made of 304-grade stainless steel or better. |
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| | PART 3 | EXECUTION |
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| | 3.1 | EXAMINATION |
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| | | A. | The PVC coated ERMC and system components have been selected for use in an atmosphere considered to be corrosive for this project. The corrosive atmosphere is considered to be more damaging than merely the presence of moisture. Accordingly, conduit and the corresponding fittings for it shall have PVC protection as described under Part 2 Products. Conduit and fittings that are merely galvanized for this purpose are not acceptable and not permitted. |
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| | 3.2 | PREPARATION |
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| | | A. | Preparation shall be done in accordance with manufacturer's printed instructions. |
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| | 3.3 | INSTALLATION - UNDERGROUND CONDUIT |
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| | | A. | Install raceways, and fittings underground as indicated on the Drawings. |
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| | | B. | Install in accordance with manufacturer's printed instructions and manufacturer's installation training. |
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| | | C. | At conduit entries into manholes that are not part of concrete-encased duct bank construction, install wall sleeves and provide conduit seals and wire and cable seals to prevent water entry into manholes. Use sealing fittings described in Part 2 of this Section. |
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| | 3.4 | QUALITY CONTROL |
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| | | A. | General: Comply with requirements of Section 16050. |
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| | 3.5 | CLEANING & PAINTING |
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| | | A. | Swab conduits clean after installation and plug ends until conductors are installed. |
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| | | B. | Remove dust, construction debris, plaster and paint spatters from raceways, boxes, and fittings after all trades have completed their work, and prior to painting. |
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| | | C. | After completing installation of exposed, factory-finished raceways and boxes, inspect exposed finishes, touch up damage, and prepare for finish painting. |
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| | 3.6 | IDENTIFICATION |
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| | | A. | Identify raceways, boxes, and fittings as required in Section 15050 "Basic Electrical Materials and Methods". |
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| | 3.7 | PROTECTION DURING CONSTRUCTION |
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| | | A. | Provide final protection and maintain conditions that ensure coatings and finishes without damage or deterioration at time of Substantial Completion. |
| | | | 1. | Repair damage to factory finishes with repair products recommended by manufacturer. |
| | | | 2. | Repair damage to PVC or paint finishes with matching touchup coating recommended by manufacturer. |
| | ** NOTE TO SPECIFIER ** The time required for this training is estimated to be two (2) hours. Delete if not required. |
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| | 3.8 | MANUFACTURER'S FIELD SERVICES |
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| | | A. | Provide on-site installation training course by company representative. The representative shall conduct the onsite training course in order to qualify for the installation certificate. |
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| | | B. | After the on site training installation, the representative shall then register the installer in his database and provide certification for installation. |
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| | END OF SECTION |