SECTION1614 CABLETRAYS
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1 SECTION1614 CABLETRAYS PART 1 GENERAL 1.01 SECTION INCLUDES A. Cable trays and accessories RELATED SECTIONS 1.03 REFERENCES A. ANSI/NFPA 70 - National Electrical Code. B. ASTM A123 - Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products. C. ASTM A653 - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process. D. NEMA VE Metal Cable Tray Systems E. NEMA VE Metal Cable Tray Installation Guidelines 1.04 ABBREVIATIONS A. Cable Tray Abbreviations: The following abbreviations are used in this section and on the drawings: 1. ASTM American Society of Testing and Materials 2. NEMA National Electrical Manufacturers Association 3. NEC National Electrical Code 4. U.L Underwriters Laboratory 5. ALUM Aluminum 6. HDGAF Hot Dipped Galvanized After Fabrication 7. PGSTL Milled Galvanized Steel 8. S.S. Stainless Steel 1.05 SUBMITTALS A. Submit under provisions of Section B. Shop Drawings: Indicate Cablofil part numbers, tray type, dimensions, NEMA class, support points, and finishes. C. Product Data: Provide data for fittings and accessories.
2 D. Manufacturer's Instructions: Indicate application conditions and limitations of use stipulated by product testing agency specified under Regulatory Requirements. Include instructions for storage, handling, protection, examination, preparation, installation, and starting of Product PROJECT RECORD DOCUMENTS A. Submit under provisions of Section B. Record actual routing of cable tray and locations of supports. PART 2 PRODUCTS 2.01 MANUFACTURERS A. Manufacturer: All cable trays shall be manufactured by Cablofil or engineer-approved equal. For location of nearest manufacturers representative, contact Cablofil at or on the world wide web at B. Cable Tray Types 1. Center Hung Type Tray: A prefabricated metal structure consisting of one longitudinal rail with individual rungs. Standard manufacturer ladder tray selections shall include full width and half width bottom rung configurations. a. Length of Straight Sections: Actual lengths and quantities shall be as indicated on drawings. Standard manufacturer lengths shall be 10 ft (actual 118-1/2 inch) or 12 ft (actual 142-1/2 inch) not including connectors if attached. Straight section lengths shall be greater than or equal to the support span length. Straight section lengths shall be used such that a maximum of one splice joint is between any two tray supports. b. Tray Widths: Actual widths shall be as indicated on drawings. Standard manufacturer widths shall be in accordance with NEMA Standard VE1 Section and shall be 6, 9, 12, 18, 24 inches. c. Center Rail Height: Actual tray center rail shall be 1-1/2 inch wide hollow tube by 3.76 inches high. Center rail shall be aluminum alloy d. Rungs: Rungs shall be minimum 5/8 inch wide by 5/8 inch deep hollow tube with reinforcing rib as specified by manufacturer. Rungs shall be attached to center rail by welding. Each rung shall be welded in minimum 2 places per manufacturer's specifications. Attachment of standard tray rungs to center rail shall not be by mechanical means. Rungs shall be aluminum alloy e. Rung Height: Rung heights shall be 3, 4, or 6 inches and as specified on drawings. Standard manufacturer rung heights shall be in accordance with NEMA Standard VE1 Section f. Rung Spacing: Rung spacing on straight tray sections shall be 6, 9, or 12 inches on center and as indicated on drawings. Standard manufacturer rung spacing on straight sections shall be 6, 9, or 12 inches. Distance between rungs on fittings shall not exceed rung spacing and tolerances for straight tray. g. Tray Fittings: Tray fitting types and quantities shall be as indicated on the drawings. All tray fittings shall be constructed of same material as straight tray sections.
3 h. Working (Allowable ) Load Capacity: Working load capacity and span shall be in accordance with NEMA Standard VE1 Sections 4.8, 5.2 and Table 1. Tray deflection shall not exceed manufacturers published engineering data for project cable tray working load capacity and minimum support span requirements. i. Safety Factor: Minimum load capacity safety factor shall be 1.5 in accordance with NEMA Standard VE1 Section j. Materials: All cable tray sections, fittings and accessories shall be made from corrosion resistant metal or metal with a factory applied corrosion resistant finish. All materials shall be as indicated on drawings and in accordance with NEMA Standard VE1 Sections 4.1 and ) Aluminum (ALUM.): Cable tray rails and rungs shall be constructed from copper free alloy type All fittings and accessories shall be constructed from corrosion resistant aluminum alloy that is compatible with alloy 6063 such as type 5052 or type k. Connectors: Connector splice shall have less than ohms electrical resistance. Expansion connectors shall provide for minimum 1" tray expansion and shall be placed as shown on drawings or as required to prevent damage to the tray system from thermal expansion and contraction. Grounding bonding jumpers shall be installed at all expansion connectors. Each straight tray section shall be supplied with one tray connector with hardware at no charge. l. Connector Hardware: 3/8 inch diameter hex bolt and serrated-face flanged hex nut which does not need a washer. Connector hardware finish shall be protected against corrosion. Connector hardware finish shall be zinc plated. m. Grounding: Provide continuous ground from cable tray to building ground in accordance with Grounding section of specifications. The cable tray system shall be capable of being is used as equipment grounding conductor in accordance with the National Electric Code (NEC) Article 392-7(b). Cable tray sections and fittings shall be marked to show the minimum cross sectional area in accordance with the National Electric Code (NEC) Article Bonding jumpers shall be constructed of laminated aluminum or insulated copper wire with a minimum of 1000 rated amperes or as indicated on drawings in accordance with NEC Ladder Type Tray: A prefabricated metal structure consisting of two longitudinal side members connected by individual transverse members or individual rungs. Standard manufacturer ladder tray selections shall include both flange in and flange out configurations. a. Length of Straight Sections: Actual lengths and quantities shall be as indicated on drawings. Standard manufacturer lengths shall be 12 ft or 20 ft not including connectors if attached. Straight section lengths shall be greater than or equal to the support span length. Straight section lengths shall be used such that a maximum of one splice joint is between any two tray supports. b. Widths: Actual widths shall be as indicated on drawings. Standard manufacturer widths shall be in accordance with NEMA Standard VE1 Section and shall be 6, 9, 12, 18, 24, 30, 36 inches. c. Side Rail Height: Actual tray side rail height shall be {4, 5, 6, 7} inches and as indicated on drawings. Standard manufacturer heights shall be in accordance with NEMA Standard VE1 Section and shall be {4, 5, 6, 7} inches.
4 d. Side Channels: Side channel members to be of 'C' channel configuration. Top flange shall be minimum 1 or 1-3/4 inches as specified in manufacturers catalog. e. Rungs: Rungs shall be minimum 1 inch wide as specified by manufacturer. Rungs shall be attached to side rails by welding. Attachment of rungs to side rails shall not be by mechanical means. Rungs shall be constructed from same material as side rails. f. Rung Spacing: Rung spacing on straight tray sections shall be {6, 9, 12} inches on center and as indicated on drawings. Standard manufacturer rung spacing on straight sections shall be 6, 9, 12. Distance between rungs on fittings shall not exceed rung spacing and tolerances for straight tray and shall be measured at the center of the fitting. g. Tray Fittings: Tray fittings types and quantities shall be as indicated on the drawings. All tray fittings shall be constructed of same material as straight tray sections. Tangent sections of tray fittings shall be at least 2 inches for NEMA class 12A,12B,12C. Tangent sections of tray fittings shall be at least 5 inches for NEMA class 20A,20B,20C. Manufacturer tray fittings shall include the following minimum standard fittings types: 1) Horizontal elbow fittings in 30, 45, 60, and 90 degree angles. 2) Vertical elbow fittings in 30, 45, 60 and 90 degree angles with inside and outside radius options. 3) Horizontal adjustable elbow fittings with adjustable angle. 4) Horizontal and vertical tee fittings, branch at 90 degree angle. 5) Horizontal wye fittings, branch at 45 degree angle. 6) Horizontal and vertical cross fittings, branch at 90 degree angles. 7) Horizontal reducers A) Straight type: Reducer fitting has two symmetrical offsets from the centerline of the fitting. B) Right hand type: Reducer fitting when viewed from large tray width side, has straight side on right. C) Left hand type : Reducer fitting when viewed from large tray width side, has straight side on left. 8) Fitting Radius: The nominal bend radius of all fittings shall be {12, 24, 36} inches as measured on the smallest side as indicated on the drawings and shall be appropriate for the allowable bending radius of the cables to be installed in the fitting. Standard manufacturers fitting radii in accordance with NEMA Standard VE1 shall be 12, 24, 36, and 48 inch. h. Working ( Allowable ) Load Capacity: Working load capacity and span shall be in accordance with NEMA Standard VE1 Sections 4.8, 5.2, and Table 1. NEMA Load/Class designation shall be (12A, 12B, 12C, 20A, 20B, 20C} and as indicated on drawings. Tray deflection shall not exceed manufacturers published engineering data for project cable tray working load capacity and minimum support span
5 requirements. i. Safety Factor: Minimum load capacity safety factor shall be 1.5 in accordance with NEMA Standard VE1 Section j. Materials: All cable tray sections, fittings and accessories shall be made from corrosion resistant metal or metal with a factory applied corrosion resistant finish. All materials shall be as indicated on drawings and in accordance with NEMA Standard VE1 Sections 4.1 and ) Mill Galvanized (PGSTL): Mill galvanized coatings shall be applied at the steel mill in accordance with ASTM specification A924 and in accordance with ASTM Publication No ) Hot Dipped Galvanized after fabrication (HDGAF): Hot dipped galvanized after fabrication shall be applied in accordance with ASTM Publication No. A123. k. Connectors: Connector splice shall have less than ohms electrical resistance. Expansion connectors shall provide for minimum 1" tray expansion and shall be placed as shown on drawings or as required to prevent damage to the tray system from thermal expansion and contraction. Grounding bonding jumpers shall be installed at all adjustable connectors and expansion connectors. l. Connector Hardware: 3/8" diameter, truss head, ribbed neck steel screw with phillips recess and a free spinning, lock type steel nut which does not need a washer. Connector hardware finish shall be protected against corrosion. Connector hardware shall be {cadmium plated steel with yellow chromate finish per ASTM B766, Class 5, Type 2, Type 316 Stainless Steel}. m. Grounding: Provide continuous ground from section to section and from cable tray to building ground in accordance with Grounding section of specifications. The cable tray system shall be capable of being is used as equipment grounding conductor in accordance with the National Electric Code (NEC) Article 392-7(b). Cable tray sections and fittings shall be marked to show the minimum cross sectional area in accordance with the National Electric Code (NEC) Article Bonding jumpers shall be constructed of laminated aluminum or insulated copper wire with a minimum of 200 rated amperes or as indicated on drawings in accordance with NEC Trough Type Tray: A fabricated metal structure greater than 4 inches in width consisting of integral or separate longitudinal side rails and a bottom having openings sufficient for the passage of air. a. Length of Straight Sections: Actual lengths and quantities shall be as indicated on drawings. Standard manufacturer lengths shall be 12 ft or 20 ft not including connectors if attached. Straight section lengths shall be greater than or equal to the support span length. Straight section lengths shall be used such that a maximum of one splice joint is between any two tray supports. b. Widths: Actual widths shall be as indicated on drawings. Standard manufacturer widths shall be in accordance with NEMA Standard VE1 Section and shall be 6, 9, 12, 18, 24, 30, 36 inches. c. Side Rail Height: Actual tray side rail height shall be {4, 5, 6, 7} inches and as indicated on drawings. Standard manufacturer heights shall be in accordance with NEMA Standard VE1 Section and shall be {4, 5, 6, 7} inches.
6 d. Transverse Elements: The maximum open spacing between transverse elements shall be 4 inches measured in the direction parallel to the side rails. e. Rung Style Troughs: Standard manufacturer rung spacing on straight sections shall be 4 inch wide channels on 8 inch centers for aluminum trays and 1-1/4 wide rungs on 5 centers for steel trays. Rung spacing on fittings shall be on 5 inch centers. Rungs shall be attached to side rails by welding. f. Ventilated, Corrugated Bottom Style Troughs: Standard manufacturer bottoms shall include ventilated corrugated bottoms welded to the side rails. Standard ventilation slots shall be 3/8" wide by 1-1/4" long spaced on 1-1/2" centers across the tray width and located 2.19" on center along the tray length. Corrugated bottom shall be 0.5" high with 0.875" top cable supporting ribs spaced on 2.19" centers along tray length. g. Tray Fittings: Tray fittings types and quantities shall be as indicated on the drawings. All tray fittings shall be constructed of same material as straight tray sections. Manufacturer tray fittings shall include the following minimum standard fittings types: 1) Horizontal elbow fittings in 30, 45, 60, and 90 degree angles. 2) Vertical elbow fittings in 30, 45, 60 and 90 degree angles with inside and outside radius options. 3) Horizontal adjustable elbow fittings with adjustable angle. 4) Horizontal and vertical tee fittings, branch at 90 degree angle. 5) Horizontal wye fittings, branch at 45 degree angle. 6) Horizontal and vertical cross fittings, branch at 90 degree angles. 7) Horizontal reducers A) Straight type: Reducer fitting has two symmetrical offsets from the centerline of the fitting. B) Right hand type: Reducer fitting when viewed from large tray width side, has straight side on right. C) Left hand type : Reducer fitting when viewed from large tray width side, has straight side on left. h. Fitting Radius: The nominal bend radius of all fittings shall be 12 inches as measured on the smallest side as indicated on the drawings and shall be appropriate for the allowable bending radius of the cables to be installed in the fitting. Standard manufacturers fitting radii in accordance with Working ( Allowable ) Load Capacity: i. Working (Allowable ) Load Capacity: Working load capacity shall be in accordance with NEMA Standard VE1 Sections 4.8, 5.2, and Table 1. NEMA Load/Class designation shall be (12A, 12B, 12C, 20A, 20B, 20C} and as indicated on drawings. Tray deflection shall not exceed manufacturers published engineering data for project cable tray working load capacity and minimum support span requirements.
7 j. Safety Factor: Minimum load capacity safety factor shall be 1.5 in accordance with NEMA Standard VE1 Section k. Materials: All cable tray sections, fittings and accessories shall be made from corrosion resistant metal or metal with a factory applied corrosion resistant finish. All materials shall be as indicated on drawings and in accordance with NEMA Standard VE1 Sections 4.1 and ) Mill Galvanized (PGSTL): Mill galvanized coatings shall be applied at the steel mill in accordance with ASTM specification A924 and in accordance with ASTM Publication No P.W. system numbers 05-2C31 shall be mill galvanized steel. 2) Hot Dipped Galvanized after fabrication (HDGAF): Hot dipped galvanized after fabrication shall be applied in accordance with ASTM Publication No. A123. P.W. system numbers 05-1C31 shall be hot dipped galvanized after fabrication steel. 3) Aluminum (ALUM.): Cable tray straight section side rails shall be constructed from copper free alloy type 6063-T6. All fittings and accessories shall be constructed from corrosion resistant aluminum alloy that is compatible with alloy 6063 such as type 5052 or type l. Connectors: Connector splice shall have less than ohms electrical resistance. Expansion connectors shall provide for minimum 1" tray expansion and shall be placed as shown on drawings or as required to prevent damage to the tray system from thermal expansion and contraction. Grounding bonding jumpers shall be installed at all adjustable connectors and expansion connectors. m. Connector Hardware: 3/8" diameter, truss head, ribbed neck steel screw with phillips recess and a free spinning, lock type steel nut which does not need a washer. Connector hardware finish shall be protected against corrosion. Connector hardware shall be {cadmium plated steel with yellow chromate finish per ASTM B766, Class 5, Type 2, Type 316 Stainless Steel}. n. Grounding: Provide continuous ground from section to section and from cable tray to building ground in accordance with Grounding section of specifications. The cable tray system shall be capable of being is used as equipment grounding conductor in accordance with the National Electric Code (NEC) Article 392-7(b). Cable tray sections and fittings shall be marked to show the minimum cross sectional area in accordance with the National Electric Code (NEC) Article Bonding jumpers shall be constructed of laminated aluminum or insulated copper wire with a minimum of 200 rated amperes or as indicated on drawings in accordance with NEC Corrugated Solid Bottom Type Tray: A prefabricated metal structure consisting of a solid bottom with no openings within an integral or two separate longitudinal side rails. Corrugated tray bottoms shall have no more than 1-5/16 inch space between corrugations.. a. Length of Straight Sections: Actual lengths and quantities shall be as indicated on drawings. Standard manufacturer lengths shall be 12 ft or 20 ft not including connectors if attached. Straight section lengths shall be greater than or equal to the support span length. Straight section lengths shall be used such that a maximum of one splice joint is between any two tray supports.
8 b. Widths: Actual widths shall be as indicated on drawings. Standard manufacturer widths shall be in accordance with NEMA Standard VE1 Section and shall be 6, 9, 12, 18, 24, 30, 36 inches. c. Side Rail Height: Actual tray side rail height shall be {4, 5, 6, 7} inches and as indicated on drawings. Standard manufacturer heights shall be in accordance with NEMA Standard VE1 Section and shall be {4, 5, 6, 7} inches. d. Side Channels: Side channel members to be of 'C' channel configuration. Top flange shall be minimum 1 or 1-3/4 inches as specified in manufacturers catalog. e. Bottoms: Standard manufacturer bottoms shall include solid corrugated bottoms welded to the side rails. Corrugated bottom shall be 0.5" high with 0.875" top cable supporting ribs spaced on 2.19" centers along tray length. f. Tray Fittings: Tray fittings types and quantities shall be as indicated on the drawings. All tray fittings shall be constructed of same material as straight tray sections. Manufacturer tray fittings shall include the following minimum standard fittings types: 1) Horizontal elbow fittings in 30, 45, 60, and 90 degree angles. 2) Vertical elbow fittings in 30, 45, 60 and 90 degree angles with inside and outside radius options. 3) Horizontal adjustable elbow fittings with adjustable angle. 4) Horizontal and vertical tee fittings, branch at 90 degree angle. 5) Horizontal wye fittings, branch at 45 degree angle. 6) Horizontal and vertical cross fittings, branch at 90 degree angles. 7) Horizontal reducers A) Straight type: Reducer fitting has two symmetrical offsets from the centerline of the fitting. B) Right hand type: Reducer fitting when viewed from large tray width side, has straight side on right. C) Left hand type : Reducer fitting when viewed from large tray width side, has straight side on left. 8) Fitting Radius: The nominal bend radius of all fittings shall be 12 inches as measured on the smallest side as indicated on the drawings and shall be appropriate for the allowable bending radius of the cables to be installed in the fitting. Standard manufacturers fitting radii in accordance with NEMA Standard VE1 shall be 12, 24, 36, and 48 inch. g. Working (Allowable ) Load Capacity: Working load capacity shall be in accordance with NEMA Standard VE1 Sections 4.8, 5.2, and Table 1. NEMA Load/Class designation shall be (12A, 12B, 12C, 20A, 20B, 20C} and as indicated on drawings. Tray deflection shall not exceed manufacturers published engineering data for project cable tray working load capacity and minimum support span requirements.
9 h. Safety Factor: Minimum load capacity safety factor shall be 1.5 in accordance with NEMA Standard VE1 Section i. Materials: All cable tray sections, fittings and accessories shall be made from corrosion resistant metal or metal with a factory applied corrosion resistant finish. All materials shall be as indicated on drawings and in accordance with NEMA Standard VE1 Sections 4.1 and ) Mill Galvanized (PGSTL): Mill galvanized coatings shall be applied at the steel mill in accordance with ASTM specification A924 and in accordance with ASTM Publication No P.W. system numbers B360 shall be mill galvanized steel. 2) Hot Dipped Galvanized after fabrication (HDGAF): Hot dipped galvanized after fabrication shall be applied in accordance with ASTM Publication No. A123. P.W. system numbers A360 shall be hot dipped galvanized after fabrication steel. 3) Aluminum (ALUM.): Cable tray straight section side rails shall be constructed from copper free alloy type 6063-T6. All fittings and accessories shall be constructed from corrosion resistant aluminum alloy that is compatible with alloy 6063 such as type 5052 or type P.W. system numbers 5720 shall be aluminum. j. Connectors: Connector splice shall have less than ohms electrical resistance. Expansion connectors shall provide for minimum 1" tray expansion and shall be placed as shown on drawings or as required to prevent damage to the tray system from thermal expansion and contraction. Grounding bonding jumpers shall be installed at all adjustable connectors and expansion connectors. k. Connector Hardware: 3/8" diameter, truss head, ribbed neck steel screw with phillips recess and a free spinning, lock type steel nut which does not need a washer. Connector hardware finish shall be protected against corrosion. Connector hardware shall be {cadmium plated steel with yellow chromate finish per ASTM B766, Class 5, Type 2, Type 316 Stainless Steel}. l. Grounding: Provide continuous ground from section to section and from cable tray to building ground in accordance with Grounding section of specifications. The cable tray system shall be capable of being is used as equipment grounding conductor in accordance with the National Electric Code (NEC) Article 392-7(b). Cable tray sections and fittings shall be marked to show the minimum cross sectional area in accordance with the National Electric Code (NEC) Article Bonding jumpers shall be constructed of laminated aluminum or insulated copper wire with a minimum of 200 rated amperes or as indicated on drawings in accordance with NEC Channel Type Tray: A prefabricated metal structure consisting of a one piece ventilated bottom or solid bottom channel section, or both, not exceeding 6 inches in width. a. Length of Straight Sections: Actual lengths shall be as indicated on drawings. Standard manufacturer lengths shall be 12 ft long not including connectors if attached. b. Widths: Actual widths shall be as indicated on drawings. Standard manufacturer widths shall be 3, 4, 6 inches.
10 c. Outside Depths: Actual depths shall be as indicated on drawings. Standard manufacturer depths shall be 1-3/4 inches. d. Channel Fittings: Channel fittings types and quantities shall be as indicated on the drawings. All channel fittings shall be constructed of same material as straight tray sections. Tangent sections of channel fittings shall be at least 2 inches. Manufacturer tray fittings shall include the following minimum standard fittings types: 1) Horizontal elbow fittings in 30, 45, 60, and 90 degree angles. 2) Vertical elbow fittings in 30, 45, 60 and 90 degree angles with inside and outside radius options. 3) Horizontal tee fittings, branch at 90 degree angle. 4) Horizontal cross fittings, branch at 90 degree angles. e. Fitting Radius: The nominal bend radius of all fittings shall be 12 inches as measured on the smallest side and as indicated on the drawings. Standard manufacturers fitting radii in accordance with NEMA Standard VE1 shall be 12, 24, and 36 inch. f. Materials: All cable tray sections, fittings and accessories shall be made from corrosion resistant metal or metal with a factory applied corrosion resistant finish. All materials shall be as indicated on drawings and in accordance with NEMA Standard VE1 Section ) Mill Galvanized (PGSTL): Mill galvanized coatings shall be applied at the steel mill in accordance with ASTM specification A924 and in accordance with ASTM Publication No P.W. system numbers shall be mill galvanized steel. 2) Hot Dipped Galvanized after fabrication (HDGAF): Hot dipped galvanized after fabrication shall be applied in accordance with ASTM Publication No. A123. P.W. system numbers shall be hot dipped galvanized after fabrication steel. 3) Aluminum (ALUM.): Cable tray straight section side rails shall be constructed from copper free alloy type 6063-T6. All fittings and accessories shall be constructed from corrosion resistant aluminum alloy that is compatible with alloy 6063 such as type 5052 or type P.W. system numbers shall be aluminum. g. Connectors: Expansion connectors shall provide for minimum 1" Channel expansion and shall be placed as shown on drawings or as required to prevent damage to the tray system from thermal expansion and contraction. Grounding bonding jumpers shall be installed at all adjustable connectors and expansion connectors. h. Connector Hardware: 3/8" diameter, truss head, ribbed neck steel screw with phillips recess and a free spinning, lock type steel nut which does not need a washer. Connector hardware finish shall be protected against corrosion. Connector hardware shall be {cadmium plated steel with yellow chromate finish per ASTM B766, Class 5, Type 2, Type 316 Stainless Steel}.
11 6. Accessories PART 3 EXECUTION 3.01 INSTALLATION a. Covers: Tray covers shall be provided as indicated on drawings. Covers for fittings shall be available in same configuration as covers for straight tray. Covers for tray shall be supplied of the same material as straight tray and fittings or as indicated on drawings. Manufacturers standard tray covers shall include flat covers with no side flanges, flat covers with side flanges, louvered flat covers with no side flanges, louvered flat covers with side flanges, and 15 degree peaked covers with side flanges. Provide standard manufacturer's hardware as required to hold covers to cable tray sections. "Clip Type" clamps may be used on indoor, horizontal cable trays. Heavy duty "Strap Type" clamps shall be used on all outdoor and vertical cable tray sections. b. Divider Strips: Divider strips shall be provided as indicated on drawings. Divider strips shall be attached to cable tray rungs in the field with standard manufacturer supplied hardware. Divider strips shall be supplied of the same material as straight tray and fittings or as indicated on drawings. c. Blind End Plates: Blind end plates shall be provided as indicated on drawings. Blind end plates shall be supplied of the same material as straight tray and fittings or as indicated on drawings. d. Cable Dropouts: Cable dropouts shall be provided as indicated on drawings. Cable dropouts shall be supplied of the same material as straight tray and fittings or as indicated on drawings. e. Wall Penetration Sleeves: Provide wall penetration sleeves for all wall penetrations where indicated on drawings. Wall penetration sleeves shall be fabricated from steel, hot dipped galvanized after fabrication material per ASTM A-123. The penetration sleeve shall be designed for a single run of cable tray in standard overall tray widths and overall tray depths. In fire rated locations, install Hilti firestop blocks in sufficient quantities to meet maximum 2 hour wall fire rating. f. Conduit and Pipe Clamps: Provide standard manufacturer designed conduit and pipe clamps and/or brackets as required by code to clamp conduit and pipe. A. Install in accordance with manufacturer's instructions. B. Install metallic cable tray in accordance with NEMA Standards Publications VE1and VE2 and as indicated on drawings. C. Provide cable tray supports at locations as shown in NEMA Standard VE2 and maintain spacing between supports of { } feet maximum. D. Elevation: Straight cable tray, fittings, and accessories shall be at height from the floor to the bottom of the cable tray { } feet and as indicated on the drawings. E. Use expansion connectors where required. ENDOFSECTION
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