PHILADELPHIA REGIONAL PORT AUTHORITY VOLUME 2 SPECIFICATIONS FOR VEHICLE PROCESSING FACILITY NAVAL BUSINESS CENTER PHILADELPHIA PA Prepared By STV Incorporated 205 West Welsh Drive Douglassville, PA 19518 STV Project No. 30-19039-0002 FINAL BRIDGING DOCUMENT SUBMISSION February 23, 2018
TABLE OF CONTENTS VOLUME 1 Section Title Bid Form for Vehicle Processing Facility DIVISION 01 GENERAL REQUIREMENTS 011000 Summary 011010 Statement of Work 012300.B Alternates 013300 Submittal Procedures 013316 Design after Award 013543 Environmental Procedures 014000 Quality Requirements 015000 Temporary Facilities and Controls 016000 Product Requirements 017300 Execution 017419 Construction Waste Management and Disposal 017700 Closeout Procedures DIVISION 03 CONCRETE 033000.B Cast-In-Place Concrete DIVISION 05 METALS 051200 Structural Steel Framing 053100 Steel Decking 055213 Pipe and Tube Railings DIVISION 06 WOOD, PLASTICS, AND COMPOSITES 061000 Rough Carpentry 064116 Plastic-Laminate-Clad Architectural Cabinets 066400 Plastic Paneling DIVISION 07 THERMAL AND MOISTURE PROTECTION 072100 Thermal Insulation 078400 Firestopping 079200 Joint Sealants 079513.13 Interior Expansion Joint Cover Assemblies DIVISION 08 OPENINGS 081110 Metal Doors and Frames 084313 Aluminum-Framed Storefronts TABLE OF CONTENTS TOC - i
TABLE OF CONTENTS Continued Section Title DIVISION 08 OPENINGS Continued 084523 Translucent Panel Assemblies 087100 Door Hardware 088000 Glazing 089119 Fixed Louvers DIVISION 09 FINISHES 092900 Gypsum Board 093013 Ceramic Tile 095113 Acoustical Tile Ceilings 096513 Resilient Base and Accessories 096519 Resilient Tile Flooring 096813 Tile Carpet 099100 Painting DIVISION 10 SPECIALTIES 102115 Toilet Compartments 102600 Wall and Door Protection 102800 Toilet and Bath Accessories 104400 Fire Protection Specialties 105113 Metal Lockers DIVISION 11 EQUIPMENT 111316 Loading Dock Seals and Shelters 111319 Stationary Loading Dock Equipment DIVISION 12 FURNISHINGS 123661.16 Solid Surfacing Countertops DIVISION 13 SPECIAL CONSTRUCTION 133419.B Metal Building Systems DIVISION 21 FIRE SUPPRESSION 210517 Sleeves and Sleeve Seals for Fire-Suppression Piping 210518 Escutcheons for Fire-Suppression Piping 210523 General-Duty Valves for Fire Protection Piping 210529 Hangers and Supports for Fire Suppression Piping and Equipment TABLE OF CONTENTS TOC - ii
TABLE OF CONTENTS Continued Section Title DIVISION 21 FIRE SUPPRESSION Continued 210548.13 Vibration Controls for Fire-Suppression Piping and Equipment 210553 Identification for Fire-Suppression Piping and Equipment 211100 Facility Fire-Suppression Water-Service Piping 211119 Fire Department Connections 211313 Wet-Pipe Sprinkler Systems 213113 Electric-Drive, Centrifugal Fire Pumps 213413 Pressure-Maintenance Pumps DIVISION 22 PLUMBING 220513 Common Motor Requirements for Plumbing Equipment 220516 Expansion Fittings and Loops for Plumbing Piping 220517 Sleeves and Sleeve Seals for Plumbing Piping 220518 Escutcheons for Plumbing Piping 220519 Meters and Gages for Plumbing Piping 220523.12 Ball Valves for Plumbing Piping 220523.14 Check Valves for Plumbing Piping 220523.15 Gate Valves for Plumbing Piping 220529 Hangers and Supports for Plumbing Piping and Equipment 220548.13 Vibration Controls for Plumbing Piping and Equipment 220553 Identification for Plumbing Piping and Equipment 220719 Plumbing Piping Insulation 221116 Domestic Water Piping 221119 Domestic Water Piping Specialties 221123 Domestic-Water Pumps 221129 Natural Gas Pressure Boosters 221316 Sanitary Waste and Vent Piping 221319 Sanitary Waste Piping Specialties 221319.13 Sanitary Drains 221429 Sump Pumps 221513 General-Service Compressed-Air Piping 221519 General-Service Packaged Air Compressors and Receivers 223300 Electric, Domestic-Water Heaters 223400 Fuel-Fired, Domestic-Water Heaters 224213.13 Commercial Water Closets 224213.16 Commercial Urinals 224216.13 Commercial Lavatories 224216.16 Commercial Sinks 224500 Emergency Plumbing Fixtures 224716 Pressure Water Coolers TABLE OF CONTENTS TOC - iii
TABLE OF CONTENTS Continued Section Title DIVISION 23 HEATING, VENTILATING, AND AIR CONDITIONING (HVAC) 230513 Common Motor Requirements for HVAC Equipment 230517 Sleeves and Sleeve Seals for HVAC Piping 230548.13 Vibration Controls for HVAC 230553 Identification for HVAC Piping and Equipment 230593 Testing, Adjusting, and Balancing for HVAC 230713 Duct Insulation 230719 HVAC Piping Insulation 230900 Vehicle Wash Equipment 230910 Paint Spray Booth 230911 Electric Vehicle Charging Station 230912 Tire Changer and Wheel Balancer 230913 Asymmetrical Two-Post Lift 230914 Compact Vertical Baler 230923 Direct Digital Control (DDC) System for HVAC 230923.12 Control Dampers 230923.16 Gas Instruments 230923.27 Temperature Instruments 231123 Facility Natural-Gas Piping 231324 Facility Aboveground Gasoline Storage Tank and Dispensing System 232113 Hydronic Piping 232116 Hydronic Piping Specialties 232300 Refrigerant Piping 232513 Water Treatment for Closed-Loop Hydronic Systems 233113 Metal Ducts 233300 Air Duct Accessories 233346 Flexible Ducts 233423 HVAC Power Ventilators 233433 Air Curtains 233500 Overhead Vehicle Tailpipe Exhaust Removal Systems 233713.13 Air Diffusers 233713.23 Registers and Grilles 235216 Condensing Boilers 235523.13 Low-Intensity, Gas-Fired, Radiant Heaters 236200 Packaged Compressor and Condenser Units 237313.13 Indoor, Basic Air-Handling Units 237423.16 Heating and Ventilation Units 237423.17 Energy Recovery Unit 237433 Dedicated Outdoor-Air Units 238126 Split-System Air Conditioners 238239.13 Cabinet Unit Heaters 238316 Radiant-Heating Hydronic Piping 239200 Prep Environment Booth TABLE OF CONTENTS TOC - iv
TABLE OF CONTENTS Continued VOLUME 2 Section Title DIVISION 26 ELECTRICAL 260519.B Low-Voltage Electrical Power Conductors and Cables 260526 Grounding and Bonding for Electrical Systems 260529 Hangers and Supports for Electrical Systems 260533 Raceways and Boxes for Electrical Systems 260544 Sleeves and Sleeve Seals for Electrical Raceways and Cabling 260553.B Identification for Electrical Systems 260573.13 Short Circuit Studies 260573.19 Arc-Flash Hazard Analysis 260800 Commissioning of Electrical Systems 260923 Lighting Control Devices 262213.B Low-Voltage Distribution Transformers 262413 Switchboards 262416.B Panelboards 262726 Wiring Devices 262816 Enclosed Switches and Circuit Breakers 262913.03 Manual and Magnetic Motor Controllers 262933 Controllers for Fire-Pump Drivers 263213.16 Gaseous Emergency Engine Generators 263600 Transfer Switches 264113 Lightning Protection for Structures 265119 LED Interior Lighting 265213 Emergency and Exit Lighting 265619.B LED Exterior Lighting DIVISION 27 COMMUNICATIONS 270526 Grounding and Bonding Communications Systems 270528 Pathways for Communications Systems 270536 Cable Trays for Communications Systems 270544 Sleeves and Sleeve Seals for Communications Pathways and Cabling 270553 Identification for Communications Systems 271100 Communications Equipment Room Fittings 271116 Communications Racks, Frames, and Enclosures 271323 Communications Optical Fiber Backbone Cabling 271513 Communications Copper Horizontal Cabling 275116 Public Address Systems TABLE OF CONTENTS TOC - v
TABLE OF CONTENTS Continued Section Title DIVISION 28 ELECTRONIC SAFETY AND SECURITY 281300 Access Control Software and Database Management 281500 Access Control Hardware Devices 282000 Video Surveillance 284621.11 Addressable Fire-Alarm Systems Attachments Scoring Committee Matrix for Technical Submission Bid Form for Vehicle Processing Facility Note: Sections with Suffix B applies to the Building Portion of the Project. In the Civil Package Specs, Sections with a Suffix C pertaining only to Site Work. TABLE OF CONTENTS TOC - vi I:\Projects\3019039\3019039_0001\70_Specifications\0002\Table of Contents.docx
SECTION 260519.B - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 1.1 SUMMARY A. Section Includes: 1. Copper building wire rated 600 V or less. 2. Metal-clad cable, Type MC, rated 600 V or less. 3. Connectors, splices, and terminations rated 600 V and less. 1.2 ACTION SUBMITTALS A. Product Data: For each type of product. B. Product Schedule: Indicate type, use, location, and termination locations. 1.3 INFORMATIONAL SUBMITTALS A. Field quality-control reports. PART 2 - PRODUCTS 2.1 COPPER BUILDING WIRE A. Description: Flexible, insulated and uninsulated, drawn copper current-carrying conductor with an overall insulation layer or jacket, or both, rated 600 V or less. B. Standards: 1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. 2. RoHS compliant. 3. Conductor and Cable Marking: Comply with wire and cable marking according to UL's "Wire and Cable Marking and Application Guide." C. Conductors: Copper, complying with ASTM B 3 for bare annealed copper and with ASTM B 8 for stranded conductors. D. Conductor Insulation: 1. Type THHN and Type THWN-2: Comply with UL 83. 2. Type THW and Type THW-2: Comply with NEMA WC-70/ICEA S-95-658 and UL 83. 3. Type XHHW-2: Comply with UL 44. LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519.B - 1
2.2 METAL-CLAD CABLE, TYPE MC A. Description: A factory assembly of one or more current-carrying insulated conductors in an overall metallic sheath. B. Standards: 1. Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. 2. Comply with UL 1569. 3. RoHS compliant. 4. Conductor and Cable Marking: Comply with wire and cable marking according to UL's "Wire and Cable Marking and Application Guide." C. Circuits: 1. Single circuit. 2. Power-Limited Fire-Alarm Circuits: Comply with UL 1424. D. Conductors: Copper, complying with ASTM B 3 for bare annealed copper and with ASTM B 8 for stranded conductors. E. Ground Conductor: Insulated. F. Conductor Insulation: 1. Type TFN/THHN/THWN-2: Comply with UL 83. 2. Type XHHW-2: Comply with UL 44. G. Armor: Steel, interlocked. H. Jacket: PVC applied over armor. 2.3 CONNECTORS AND SPLICES A. Description: Factory-fabricated connectors, splices, and lugs of size, ampacity rating, material, type, and class for application and service indicated; listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and use. B. Jacketed Cable Connectors: For steel and aluminum jacketed cables, zinc die-cast with set screws, designed to connect conductors specified in this Section. C. Lugs: One piece, seamless, designed to terminate conductors specified in this Section. 1. Material: Copper. 2. Type: Two hole with standard barrels. 3. Termination: Compression. LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519.B - 2
PART 3 - EXECUTION 3.1 CONDUCTOR MATERIAL APPLICATIONS A. Feeders: Copper; solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger. B. Branch Circuits: Copper. Solid for No. 10 AWG and smaller; stranded for No. 8 AWG and larger. C. Power-Limited Fire Alarm and Control: Solid for No. 12 AWG and smaller. 3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND WIRING METHODS A. Service Entrance: Type XHHW-2, single conductors in raceway. B. Exposed Feeders: Type THHN/THWN-2, single conductors in raceway. C. Feeders Concealed in Ceilings, Walls, Partitions, and Crawlspaces: Type THHN/THWN-2, single conductors in raceway. D. Feeders Concealed in Concrete, below Slabs-on-Grade, and Underground: Type XHHW-2, single conductors in raceway. E. Exposed Branch Circuits, Including in Crawlspaces: Type THHN/THWN-2, single conductors in raceway. F. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN/THWN-2, single conductors in raceway and metal-clad cable, Type MC. G. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground: Type XHHW- 2, single conductors in raceway. 3.3 INSTALLATION OF CONDUCTORS AND CABLES A. Conceal cables in finished walls, ceilings, and floors unless otherwise indicated. B. Complete raceway installation between conductor and cable termination points according to Section 260533 "Raceways and Boxes for Electrical Systems" prior to pulling conductors and cables. C. Use manufacturer-approved pulling compound or lubricant where necessary; compound used must not deteriorate conductor or insulation. Do not exceed manufacturer's recommended maximum pulling tensions and sidewall pressure values. D. Use pulling means, including fish tape, cable, rope, and basket-weave wire/cable grips, that will not damage cables or raceway. E. Install exposed cables parallel and perpendicular to surfaces of exposed structural members, and follow surface contours where possible. LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519.B - 3
F. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems." 3.4 CONNECTIONS A. Tighten electrical connectors and terminals according to manufacturer's published torquetightening values. If manufacturer's torque values are not indicated, use those specified in UL 486A-486B. B. Make splices, terminations, and taps that are compatible with conductor material and that possess equivalent or better mechanical strength and insulation ratings than unspliced conductors. 1. Use oxide inhibitor in each splice, termination, and tap for aluminum conductors. C. Wiring at Outlets: Install conductor at each outlet, with at least 6 inches of slack. 3.5 IDENTIFICATION A. Identify and color-code conductors and cables according to Section 260553.B "Identification for Electrical Systems." B. Identify each spare conductor at each end with identity number and location of other end of conductor, and identify as spare conductor. 3.6 SLEEVE AND SLEEVE-SEAL INSTALLATION FOR ELECTRICAL PENETRATIONS A. Install sleeves and sleeve seals at penetrations of exterior floor and wall assemblies. Comply with requirements in Section 260544 "Sleeves and Sleeve Seals for Electrical Raceways and Cabling." 3.7 FIRESTOPPING A. Apply firestopping to electrical penetrations of fire-rated floor and wall assemblies to restore original fire-resistance rating of assembly according to Section 078400 "Firestopping." END OF SECTION 260519.B LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES 260519.B - 4 I:\Projects\3019039\3019039_0001\70_Specifications\0002\260519.B.docx
SECTION 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS PART 1 - GENERAL 1.1 SUMMARY A. Section includes grounding and bonding systems and equipment. B. Section includes grounding and bonding systems and equipment, plus the following special applications: 1. Underground distribution grounding. 2. Foundation steel electrodes. 1.2 ACTION SUBMITTALS A. Product Data: For each type of product. 1.3 INFORMATIONAL SUBMITTALS A. Coordination Drawings: Plans showing dimensioned as-built locations of grounding features specified in "Field Quality Control" Article. B. Qualification Data: For testing agency and testing agency's field supervisor. C. Field quality-control reports. 1.4 CLOSEOUT SUBMITTALS A. Operation and maintenance data. 1. Plans showing as-built, dimensioned locations of grounding features specified in "Field Quality Control" Article, including the following: a. Test wells. b. Ground rods. c. Ground rings. d. Grounding arrangements and connections for separately derived systems. 2. Instructions for periodic testing and inspection of grounding features at test wells based on NETA MTS. a. Tests shall determine if ground-resistance or impedance values remain within specified maximums, and instructions shall recommend corrective action if values do not. b. Include recommended testing intervals. GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-1
1.5 QUALITY ASSURANCE A. Testing Agency Qualifications: Certified by NETA. PART 2 - PRODUCTS 2.1 SYSTEM DESCRIPTION A. Electrical Components, Devices, and Accessories: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. B. Comply with UL 467 for grounding and bonding materials and equipment. 2.2 CONDUCTORS A. Insulated Conductors: Copper wire or cable insulated for 600 V unless otherwise required by applicable Code or authorities having jurisdiction. B. Bare Copper Conductors: 1. Solid Conductors: ASTM B 3. 2. Stranded Conductors: ASTM B 8. 3. Tinned Conductors: ASTM B 33. 4. Bonding Cable: 28 kcmil, 14 strands of No. 17 AWG conductor, 1/4 inch in diameter. 5. Bonding Conductor: No. 4 or No. 6 AWG, stranded conductor. 6. Bonding Jumper: Copper tape, braided conductors terminated with copper ferrules; 1-5/8 inches wide and 1/16 inch thick. C. Grounding Bus: Predrilled rectangular bars of annealed copper, 1/4 by 4 inches in cross section, with 9/32-inch holes spaced 1-1/8 inches apart. Stand-off insulators for mounting shall comply with UL 891 for use in switchboards, 600 V and shall be Lexan or PVC, impulse tested at 5000 V. 2.3 CONNECTORS A. Listed and labeled by an NRTL acceptable to authorities having jurisdiction for applications in which used and for specific types, sizes, and combinations of conductors and other items connected. B. Welded Connectors: Exothermic-welding kits of types recommended by kit manufacturer for materials being joined and installation conditions. C. Bus-Bar Connectors: Compression type, copper or copper alloy, with two wire terminals. D. Beam Clamps: Mechanical type, terminal, ground wire access from four directions, with dual, tin-plated or silicon bronze bolts. E. Cable-to-Cable Connectors: Compression type, copper or copper alloy. GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-2
F. Cable Tray Ground Clamp: Mechanical type, zinc-plated malleable iron. G. Conduit Hubs: Mechanical type, terminal with threaded hub. H. Ground Rod Clamps: Mechanical type, copper or copper alloy, terminal with hex head bolt. I. Lay-in Lug Connector: Mechanical type, copper rated for direct burial terminal with set screw. J. Service Post Connectors: Mechanical type, bronze alloy terminal, in short- and long-stud lengths, capable of single and double conductor connections. K. Signal Reference Grid Clamp: Mechanical type, stamped-steel terminal with hex head screw. L. Straps: Solid copper, copper lugs. Rated for 600 A. M. Tower Ground Clamps: Mechanical type, copper or copper alloy, terminal two-piece clamp. N. U-Bolt Clamps: Mechanical type, copper or copper alloy, terminal listed for direct burial. O. Water Pipe Clamps: 1. Mechanical type, two pieces with zinc-plated bolts. a. Material: Die-cast zinc alloy. b. Listed for direct burial. 2. U-bolt type with malleable-iron clamp and copper ground connector rated for direct burial. 2.4 GROUNDING ELECTRODES A. Ground Rods: Copper-clad steel; 3/4 inch by 10 feet. B. Ground Plates: 1/4 inch thick, hot-dip galvanized. PART 3 - EXECUTION 3.1 APPLICATIONS A. Conductors: Install solid conductor for No. 10 AWG and smaller, and stranded conductors for No.8 AWG and larger unless otherwise indicated. B. Underground Grounding Conductors: Install bare tinned-copper conductor, No. 2/0 AWG minimum. 1. Bury at least 24 inches below grade. C. Grounding Bus: Install in electrical equipment rooms, in rooms housing service equipment, and elsewhere as indicated. GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-3
1. Install bus horizontally, on insulated spacers 2 inches minimum from wall, 6 inches above finished floor unless otherwise indicated. 2. Where indicated on both sides of doorways, route bus up to top of door frame, across top of doorway, and down; connect to horizontal bus. D. Conductor Terminations and Connections: 1. Pipe and Equipment Grounding Conductor Terminations: Bolted connectors. 2. Underground Connections: Welded connectors except at test wells and as otherwise indicated. 3. Connections to Ground Rods at Test Wells: Bolted connectors. 4. Connections to Structural Steel: Welded connectors. 3.2 GROUNDING AT THE SERVICE A. Equipment grounding conductors and grounding electrode conductors shall be connected to the ground bus. Install a main bonding jumper between the neutral and ground buses. 3.3 GROUNDING SEPARATELY DERIVED SYSTEMS A. Generator: Install grounding electrode(s) at the generator location. The electrode shall be connected to the equipment grounding conductor and to the frame of the generator. 3.4 GROUNDING UNDERGROUND DISTRIBUTION SYSTEM COMPONENTS A. Comply with IEEE C2 grounding requirements. B. Pad-Mounted Transformers and Switches: Install two ground rods and ground ring around the pad. Ground pad-mounted equipment and noncurrent-carrying metal items associated with substations by connecting them to underground cable and grounding electrodes. Install tinnedcopper conductor not less than No. 2 AWG for ground ring and for taps to equipment grounding terminals. Bury ground ring not less than 6 inches from the foundation. 3.5 EQUIPMENT GROUNDING A. Install insulated equipment grounding conductors with all feeders and branch circuits. B. Install insulated equipment grounding conductors with the following items, in addition to those required by NFPA 70: 1. Feeders and branch circuits. 2. Lighting circuits. 3. Receptacle circuits. 4. Single-phase motor and appliance branch circuits. 5. Three-phase motor and appliance branch circuits. 6. Flexible raceway runs. 7. Armored and metal-clad cable runs. GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-4
8. Busway Supply Circuits: Install insulated equipment grounding conductor from grounding bus in the switchgear, switchboard, or distribution panel to equipment grounding bar terminal on busway. C. Air-Duct Equipment Circuits: Install insulated equipment grounding conductor to duct-mounted electrical devices operating at 120 V and more, including air cleaners, heaters, dampers, humidifiers, and other duct electrical equipment. Bond conductor to each unit and to air duct and connected metallic piping. D. Water Heater, Heat-Tracing, and Antifrost Heating Cables: Install a separate insulated equipment grounding conductor to each electric water heater and heat-tracing cable. Bond conductor to heater units, piping, connected equipment, and components. 3.6 INSTALLATION A. Grounding Conductors: Route along shortest and straightest paths possible unless otherwise indicated or required by Code. Avoid obstructing access or placing conductors where they may be subjected to strain, impact, or damage. B. Ground Rods: Drive rods until tops are 2 inches below finished floor or final grade unless otherwise indicated. 1. Interconnect ground rods with grounding electrode conductor below grade and as otherwise indicated. Make connections without exposing steel or damaging coating if any. C. Bonding Straps and Jumpers: Install in locations accessible for inspection and maintenance except where routed through short lengths of conduit. 1. Bonding to Structure: Bond straps directly to basic structure, taking care not to penetrate any adjacent parts. 2. Bonding to Equipment Mounted on Vibration Isolation Hangers and Supports: Install bonding so vibration is not transmitted to rigidly mounted equipment. 3. Use exothermic-welded connectors for outdoor locations; if a disconnect-type connection is required, use a bolted clamp. D. Grounding and Bonding for Piping: 1. Metal Water Service Pipe: Install insulated copper grounding conductors, in conduit, from building's main service equipment, or grounding bus, to main metal water service entrances to building. Connect grounding conductors to main metal water service pipes; use a bolted clamp connector or bolt a lug-type connector to a pipe flange by using one of the lug bolts of the flange. Where a dielectric main water fitting is installed, connect grounding conductor on street side of fitting. Bond metal grounding conductor conduit or sleeve to conductor at each end. 2. Water Meter Piping: Use braided-type bonding jumpers to electrically bypass water meters. Connect to pipe with a bolted connector. 3. Bond each aboveground portion of gas piping system downstream from equipment shutoff valve. GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-5
3.7 FIELD QUALITY CONTROL A. Perform tests and inspections. B. Tests and Inspections: 1. After installing grounding system but before permanent electrical circuits have been energized, test for compliance with requirements. 2. Inspect physical and mechanical condition. Verify tightness of accessible, bolted, electrical connections with a calibrated torque wrench according to manufacturer's written instructions. 3. Test completed grounding system at each location where a maximum ground-resistance level is specified, at service disconnect enclosure grounding terminal, at ground test wells, and at individual ground rods. Make tests at ground rods before any conductors are connected. a. Measure ground resistance no fewer than two full days after last trace of precipitation and without soil being moistened by any means other than natural drainage or seepage and without chemical treatment or other artificial means of reducing natural ground resistance. b. Perform tests by fall-of-potential method according to IEEE 81. 4. Prepare dimensioned Drawings locating each test well, ground rod and ground-rod assembly, and other grounding electrodes. Identify each by letter in alphabetical order, and key to the record of tests and observations. Include the number of rods driven and their depth at each location, and include observations of weather and other phenomena that may affect test results. Describe measures taken to improve test results. C. Grounding system will be considered defective if it does not pass tests and inspections. D. Prepare test and inspection reports. E. Report measured ground resistances that exceed the following values: 1. Power and Lighting Equipment or System with Capacity of 500 kva and Less: 10 ohms. 2. Power and Lighting Equipment or System with Capacity of 500 to 1000 kva: 5 ohms. 3. Power and Lighting Equipment or System with Capacity More Than 1000 kva: 3 ohms. 4. Switchboards and Pad-Mounted Equipment: 5 ohms. 5. Manhole Grounds: 10 ohms. F. Excessive Ground Resistance: If resistance to ground exceeds specified values, notify Architect promptly and include recommendations to reduce ground resistance. END OF SECTION 260526 GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS 260526-6 I:\Projects\3019039\3019039_0001\70_Specifications\0002\220516.docx
SECTION 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Steel slotted support systems. 2. Conduit and cable support devices. 3. Support for conductors in vertical conduit. 4. Structural steel for fabricated supports and restraints. 5. Mounting, anchoring, and attachment components, including powder-actuated fasteners, mechanical expansion anchors, concrete inserts, clamps, through bolts, toggle bolts, and hanger rods. 6. Fabricated metal equipment support assemblies. 1.2 ACTION SUBMITTALS A. Product Data: For each type of product. B. Shop Drawings: For fabrication and installation details for electrical hangers and support systems. 1. Hangers. Include product data for components. 2. Slotted support systems. 3. Equipment supports. 4. Vibration Isolation Base Details: Detail fabrication including anchorages and attachments to structure and to supported equipment. Include adjustable motor bases, rails, and frames for equipment mounting. C. Delegated-Design Submittal: For hangers and supports for electrical systems. 1. Include design calculations and details of hangers. 2. Include design calculations for seismic restraints. 1.3 INFORMATIONAL SUBMITTALS A. Coordination Drawings: Reflected ceiling plan(s) and other details, drawn to scale, and coordinated with each other, using input from installers of the items involved. B. Seismic Qualification Data: Certificates, for hangers and supports for electrical equipment and systems, accessories, and components, from manufacturer. C. Welding certificates. HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529-1
1.4 QUALITY ASSURANCE A. Welding Qualifications: Qualify procedures and personnel according to AWS D1.1/D1.1M. B. Welding Qualifications: Qualify procedures and personnel according to the following: 1. AWS D1.1/D1.1M. PART 2 - PRODUCTS 2.1 PERFORMANCE REQUIREMENTS A. Delegated Design: Engage a qualified professional engineer, as defined in Section 014000 "Quality Requirements," to design hanger and support system. B. Surface-Burning Characteristics: Comply with ASTM E 84; testing by a qualified testing agency. Identify products with appropriate markings of applicable testing agency. 1. Flame Rating: Class 1. 2. Self-extinguishing according to ASTM D 635. 2.2 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS A. Steel Slotted Support Systems: Preformed steel channels and angles with minimum 13/32-inch diameter holes at a maximum of 8 inches o.c. in at least one surface. 1. Standard: Comply with MFMA-4 factory-fabricated components for field assembly. 2. Material for Channel, Fittings, and Accessories: Galvanized steel. 3. Channel Width: Selected for applicable load criteria. 4. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to MFMA-4. 5. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coating applied according to MFMA-4. 6. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-4. 7. Protect finishes on exposed surfaces from damage by applying a strippable, temporary protective covering before shipping. B. Conduit and Cable Support Devices: Steel hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported. C. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded body and insulating wedging plug or plugs for nonarmored electrical conductors or cables in riser conduits. Plugs shall have number, size, and shape of conductor gripping pieces as required to suit individual conductors or cables supported. Body shall be made of malleable iron. D. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M steel plates, shapes, and bars; black and galvanized. HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529-2
E. Mounting, Anchoring, and Attachment Components: Items for fastening electrical items or their supports to building surfaces include the following: 1. Powder-Actuated Fasteners: Threaded-steel stud, for use in hardened portland cement concrete, steel, or wood, with tension, shear, and pullout capacities appropriate for supported loads and building materials where used. 2. Mechanical-Expansion Anchors: Insert-wedge-type, zinc-coated steel, for use in hardened portland cement concrete, with tension, shear, and pullout capacities appropriate for supported loads and building materials where used. 3. Concrete Inserts: Steel or malleable-iron, slotted support system units are similar to MSS Type 18 units and comply with MFMA-4 or MSS SP-58. 4. Clamps for Attachment to Steel Structural Elements: MSS SP-58 units are suitable for attached structural element. 5. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325. 6. Toggle Bolts: Stainless-steel springhead type. 7. Hanger Rods: Threaded steel. 2.3 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES A. Description: Welded or bolted structural-steel shapes, shop or field fabricated to fit dimensions of supported equipment. PART 3 - EXECUTION 3.1 APPLICATION A. Comply with the following standards for application and installation requirements of hangers and supports, except where requirements on Drawings or in this Section are stricter: 1. NECA 1. 2. NECA 101 3. NECA 102. 4. NECA 105. 5. NECA 111. B. Comply with requirements in Section 078400 "Firestopping" for firestopping materials and installation for penetrations through fire-rated walls, ceilings, and assemblies. C. Comply with requirements for raceways and boxes specified in Section 260533 "Raceways and Boxes for Electrical Systems." D. Maximum Support Spacing and Minimum Hanger Rod Size for Raceways: Space supports for EMT, IMC, and RMC as scheduled in NECA 1, where its Table 1 lists maximum spacings that are less than those stated in NFPA 70. Minimum rod size shall be 1/4 inch in diameter. E. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted support system, sized so capacity can be increased by at least 20 percent in future without exceeding specified design load limits. HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529-3
1. Secure raceways and cables to these supports with two-bolt conduit clamps. F. Spring-steel clamps designed for supporting single conduits without bolts may be used for 1-1/2- inch and smaller raceways serving branch circuits and communication systems above suspended ceilings, and for fastening raceways to trapeze supports. 3.2 SUPPORT INSTALLATION A. Comply with NECA 1 and NECA 101 for installation requirements except as specified in this article. B. Raceway Support Methods: In addition to methods described in NECA 1, EMT, IMC, and RMC may be supported by openings through structure members, according to NFPA 70. C. Strength of Support Assemblies: Where not indicated, select sizes of components so strength will be adequate to carry present and future static loads within specified loading limits. Minimum static design load used for strength determination shall be weight of supported components plus 200 lb. D. Mounting and Anchorage of Surface-Mounted Equipment and Components: Anchor and fasten electrical items and their supports to building structural elements by the following methods unless otherwise indicated by code: 1. To Wood: Fasten with lag screws or through bolts. 2. To New Concrete: Bolt to concrete inserts. 3. To Masonry: Approved toggle-type bolts on hollow masonry units and expansion anchor fasteners on solid masonry units. 4. To Steel: Welded threaded studs complying with AWS D1.1/D1.1M, with lock washers and nuts. 5. To Light Steel: Sheet metal screws. 6. Items Mounted on Hollow Walls and Nonstructural Building Surfaces: Mount cabinets, panelboards, disconnect switches, control enclosures, pull and junction boxes, transformers, and other devices on slotted-channel racks attached to substrate by means that comply with seismic-restraint strength and anchorage requirements. E. Drill holes for expansion anchors in concrete at locations and to depths that avoid the need for reinforcing bars. 3.3 INSTALLATION OF FABRICATED METAL SUPPORTS A. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor electrical materials and equipment. B. Field Welding: Comply with AWS D1.1/D1.1M. END OF SECTION 260529 HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS 260529-4 I:\Projects\3019039\3019039_0001\70_Specifications\0002\260529.docx
SECTION 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS PART 1 - GENERAL 1.1 SUMMARY A. Section Includes: 1. Metal conduits and fittings. 2. Nonmetallic conduits and fittings. 3. Metal wireways and auxiliary gutters. 4. Nonmetal wireways and auxiliary gutters. 5. Surface raceways. 6. Boxes, enclosures, and cabinets. 7. Handholes and boxes for exterior underground cabling. 1.2 ACTION SUBMITTALS A. Product Data: For each type of product. B. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, and attachment details. 1.3 INFORMATIONAL SUBMITTALS A. Coordination Drawings: Conduit routing plans, drawn to scale, on which the following items are shown and coordinated with each other, using input from installers of items involved: 1. Structural members in paths of conduit groups with common supports. 2. HVAC and plumbing items and architectural features in paths of conduit groups with common supports. B. Seismic Qualification Data: Certificates, for enclosures, cabinets, and conduit racks and their mounting provisions, including those for internal components, from manufacturer. PART 2 - PRODUCTS 2.1 METAL CONDUITS AND FITTINGS A. Metal Conduit: 1. Listing and Labeling: Metal conduits, tubing, and fittings shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2. GRC: Comply with ANSI C80.1 and UL 6. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-1
3. ARC: Comply with ANSI C80.5 and UL 6A. 4. IMC: Comply with ANSI C80.6 and UL 1242. 5. PVC-Coated Steel Conduit: PVC-coated rigid steel conduit. a. Comply with NEMA RN 1. b. Coating Thickness: 0.040 inch, minimum. 6. EMT: Comply with ANSI C80.3 and UL 797. 7. FMC: Comply with UL 1; zinc-coated steel. 8. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360. B. Metal Fittings: Comply with NEMA FB 1 and UL 514B. 1. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2. Fittings, General: Listed and labeled for type of conduit, location, and use. 3. Conduit Fittings for Hazardous (Classified) Locations: Comply with UL 1203 and NFPA 70. 4. Fittings for EMT: a. Material: Steel. b. Type: Compression. 5. Expansion Fittings: PVC or steel to match conduit type, complying with UL 651, rated for environmental conditions where installed, and including flexible external bonding jumper. 6. Coating for Fittings for PVC-Coated Conduit: Minimum thickness of 0.040 inch, with overlapping sleeves protecting threaded joints. C. Joint Compound for IMC, GRC, or ARC: Approved, as defined in NFPA 70, by authorities having jurisdiction for use in conduit assemblies, and compounded for use to lubricate and protect threaded conduit joints from corrosion and to enhance their conductivity. 2.2 NONMETALLIC CONDUITS AND FITTINGS A. Listing and Labeling: Listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 1. ENT: Comply with NEMA TC 13 and UL 1653. 2. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwise indicated. 3. LFNC: Comply with UL 1660. B. Nonmetallic Fittings: 1. Fittings, General: Listed and labeled for type of conduit, location, and use. 2. Fittings for ENT and RNC: Comply with NEMA TC 3; match to conduit or tubing type and material. 3. Fittings for LFNC: Comply with UL 514B. 4. Solvents and Adhesives: As recommended by conduit manufacturer. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-2
2.3 METAL WIREWAYS AND AUXILIARY GUTTERS A. Description: Sheet metal, complying with UL 870 and NEMA 250, Type 1 or Type 3R unless otherwise indicated, and sized according to NFPA 70. 1. Metal wireways installed outdoors shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. B. Fittings and Accessories: Include covers, couplings, offsets, elbows, expansion joints, adapters, hold-down straps, end caps, and other fittings to match and mate with wireways as required for complete system. 2.4 SURFACE RACEWAYS A. Listing and Labeling: Surface raceways and tele-power poles shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. B. Surface Metal Raceways: Galvanized steel with snap-on covers complying with UL 5. C. Tele-Power Poles: 1. Material: Galvanized steel with ivory baked-enamel finish. 2. Fittings and Accessories: Dividers, end caps, covers, cutouts, wiring harnesses, devices, mounting materials, and other fittings shall match and mate with tele-power pole as required for complete system. 2.5 BOXES, ENCLOSURES, AND CABINETS A. General Requirements for Boxes, Enclosures, and Cabinets: Boxes, enclosures, and cabinets installed in wet locations shall be listed for use in wet locations. B. Sheet Metal Outlet and Device Boxes: Comply with NEMA OS 1 and UL 514A. C. Cast-Metal Outlet and Device Boxes: Comply with NEMA FB 1, ferrous alloy, Type FD, with gasketed cover. D. Nonmetallic Outlet and Device Boxes: Comply with NEMA OS 2 and UL 514C. E. Metal Floor Boxes: 1. Material: Cast metal or sheet metal. 2. Type: Fully adjustable. 3. Shape: Rectangular. 4. Listing and Labeling: Metal floor boxes shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. F. Luminaire Outlet Boxes: Nonadjustable, designed for attachment of luminaire weighing 50 lb. Outlet boxes designed for attachment of luminaires weighing more than 50 lb shall be listed and marked for the maximum allowable weight. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-3
G. Small Sheet Metal Pull and Junction Boxes: NEMA OS 1. H. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773, galvanized, cast iron with gasketed cover. I. Box extensions used to accommodate new building finishes shall be of same material as recessed box. J. Device Box Dimensions: 4 inches square by 2-1/8 inches deep. K. Gangable boxes are prohibited. L. Hinged-Cover Enclosures: Comply with UL 50 and NEMA 250, Type 1 or Type 3R with continuous-hinge cover with flush latch unless otherwise indicated. 1. Metal Enclosures: Steel, finished inside and out with manufacturer's standard enamel. 2. Interior Panels: Steel; all sides finished with manufacturer's standard enamel. M. Cabinets: 1. NEMA 250, Type 1 or Type 3R galvanized-steel box with removable interior panel and removable front, finished inside and out with manufacturer's standard enamel. 2. Hinged door in front cover with flush latch and concealed hinge. 3. Key latch to match panelboards. 4. Metal barriers to separate wiring of different systems and voltage. 5. Accessory feet where required for freestanding equipment. 6. Nonmetallic cabinets shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. 2.6 HANDHOLES AND BOXES FOR EXTERIOR UNDERGROUND WIRING A. General Requirements for Handholes and Boxes: 1. Boxes and handholes for use in underground systems shall be designed and identified as defined in NFPA 70, for intended location and application. 2. Boxes installed in wet areas shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. B. Polymer-Concrete Handholes and Boxes with Polymer-Concrete Cover: Molded of sand and aggregate, bound together with polymer resin, and reinforced with steel, fiberglass, or a combination of the two. 1. Standard: Comply with SCTE 77. 2. Configuration: Designed for flush burial with closed bottom unless otherwise indicated. 3. Cover: Weatherproof, secured by tamper-resistant locking devices and having structural load rating consistent with enclosure and handhole location. 4. Cover Finish: Nonskid finish shall have a minimum coefficient of friction of 0.50. 5. Cover Legend: Molded lettering, "ELECTRIC." 6. Conduit Entrance Provisions: Conduit-terminating fittings shall mate with entering ducts for secure, fixed installation in enclosure wall. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-4
PART 3 - EXECUTION 3.1 RACEWAY APPLICATION A. Outdoors: Apply raceway products as specified below unless otherwise indicated: 1. Exposed Conduit: GRC. 2. Concealed Conduit, Aboveground: GRC or IMC, EMT. 3. Underground Conduit: RNC, Type EPC-40-PVC, concrete encased. 4. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven Equipment): LFMC. 5. Boxes and Enclosures, Aboveground: NEMA 250, Type 3R. B. Indoors: Apply raceway products as specified below unless otherwise indicated. 1. Exposed, Not Subject to Physical Damage: EMT. 2. Exposed, Not Subject to Severe Physical Damage: EMT. 3. Exposed and Subject to Severe Physical Damage: GRC. Raceway locations include the following: a. Loading dock. b. Corridors used for traffic of mechanized carts, forklifts, and pallet-handling units. c. Mechanical rooms. d. Body Shop Below 12. e. Car Wash Below 12. f. PIO Below 12. 4. Concealed in Ceilings and Interior Walls and Partitions: EMT. 5. Connection to Vibrating Equipment (Including Transformers and Hydraulic, Pneumatic, Electric Solenoid, or Motor-Driven Equipment): FMC, except use LFMC in damp or wet locations. 6. Damp or Wet Locations: GRC. 7. Boxes and Enclosures: NEMA 250, Type 1, except use NEMA 250, Type 3R stainless steel in damp or wet locations. C. Minimum Raceway Size: 3/4-inch trade size. D. Raceway Fittings: Compatible with raceways and suitable for use and location. 1. Rigid and Intermediate Steel Conduit: Use threaded rigid steel conduit fittings unless otherwise indicated. Comply with NEMA FB 2.10. 2. PVC Externally Coated, Rigid Steel Conduits: Use only fittings listed for use with this type of conduit. Patch and seal all joints, nicks, and scrapes in PVC coating after installing conduits and fittings. Use sealant recommended by fitting manufacturer and apply in thickness and number of coats recommended by manufacturer. 3. EMT: Use compression, steel fittings. Comply with NEMA FB 2.10. 4. Flexible Conduit: Use only fittings listed for use with flexible conduit. Comply with NEMA FB 2.20. E. Do not install aluminum conduits, boxes, or fittings in contact with concrete or earth. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-5
F. Install surface raceways only where indicated on Drawings. G. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F. 3.2 INSTALLATION A. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems" for hangers and supports. B. Comply with NECA 1 and NECA 101 for installation requirements except where requirements on Drawings or in this article are stricter. Comply with NECA 102 for aluminum conduits. Comply with NFPA 70 limitations for types of raceways allowed in specific occupancies and number of floors. C. Do not install raceways or electrical items on any "explosion-relief" walls or rotating equipment. D. Do not fasten conduits onto the bottom side of a metal deck roof. E. Keep raceways at least 6 inches away from parallel runs of flues and steam or hot-water pipes. Install horizontal raceway runs above water and steam piping. F. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems" for hangers and supports. G. Arrange stub-ups so curved portions of bends are not visible above finished slab. H. Install no more than the equivalent of three 90-degree bends in any conduit run except for control wiring conduits, for which fewer bends are allowed. Support within 12 inches of changes in direction. I. Make bends in raceway using large-radius preformed ells. Field bending shall be according to NFPA 70 minimum radii requirements. Use only equipment specifically designed for material and size involved. J. Conceal conduit and EMT within finished walls, ceilings, and floors unless otherwise indicated. Install conduits parallel or perpendicular to building lines. K. Support conduit within 12 inches of enclosures to which attached. L. Raceways Embedded in Slabs: 1. Run conduit larger than 1-inch trade size, parallel or at right angles to main reinforcement. Where at right angles to reinforcement, place conduit close to slab support. Secure raceways to reinforcement at maximum 10-foot intervals. 2. Arrange raceways to cross building expansion joints at right angles with expansion fittings. 3. Arrange raceways to keep a minimum of 2 inches of concrete cover in all directions. 4. Do not embed threadless fittings in concrete unless specifically approved by Architect for each specific location. 5. Change to GRC before rising above floor. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-6
M. Stub-ups to Above Recessed Ceilings: 1. Use EMT, IMC, or RMC for raceways. 2. Use a conduit bushing or insulated fitting to terminate stub-ups not terminated in hubs or in an enclosure. N. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions: Apply listed compound to threads of raceway and fittings before making up joints. Follow compound manufacturer's written instructions. O. Coat field-cut threads on PVC-coated raceway with a corrosion-preventing conductive compound prior to assembly. P. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings to protect conductors including conductors smaller than No. 4 AWG. Q. Terminate threaded conduits into threaded hubs or with locknuts on inside and outside of boxes or cabinets. Install bushings on conduits up to 1-1/4-inch trade size and insulated throat metal bushings on 1-1/2-inch trade size and larger conduits terminated with locknuts. Install insulated throat metal grounding bushings on service conduits. R. Install pull wires in empty raceways. Use polypropylene or monofilament plastic line with not less than 200-lb tensile strength. Leave at least 12 inches of slack at each end of pull wire. Cap underground raceways designated as spare above grade alongside raceways in use. S. Surface Raceways: 1. Install surface raceway with a minimum 2-inch radius control at bend points. 2. Secure surface raceway with screws or other anchor-type devices at intervals not exceeding 48 inches and with no less than two supports per straight raceway section. Support surface raceway according to manufacturer's written instructions. Tape and glue are not acceptable support methods. T. Install raceway sealing fittings at accessible locations according to NFPA 70 and fill them with listed sealing compound. For concealed raceways, install each fitting in a flush steel box with a blank cover plate having a finish similar to that of adjacent plates or surfaces. U. Install devices to seal raceway interiors at accessible locations. Locate seals so no fittings or boxes are between the seal and the following changes of environments. Seal the interior of all raceways at the following points: 1. Where conduits pass from warm to cold locations, such as boundaries of refrigerated spaces. 2. Where an underground service raceway enters a building or structure. 3. Conduit extending from interior to exterior of building. 4. Conduit extending into pressurized duct and equipment. 5. Conduit extending into pressurized zones that are automatically controlled to maintain different pressure set points. RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS 260533-7