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20260701 ADV-1
ADVERTISEMENT FOR BIDS
Sealed bids will be received for the Orleans Parish School Board (OPSB) by the Procurement Department, Room 5055, 2401 Westbend Parkway, New Orleans, Louisiana 70114, until 2:00 PM CDT on Thursday, August 6, 2026.
Bids will be publicly opened and read aloud at that time, and a tabulation will be made for consideration by the Owner in awarding the Contract.
Bids received after the above-designated date and time will not be opened and will be rejected.
ANY PERSON REQUIRING SPECIAL ACCOMMODATIONS SHALL NOTIFY THE ORLEANS
PARISH SCHOOL BOARD OF THE TYPE(S) OF ACCOMMODATION REQUIRED NOT LESS THAN
SEVEN (7) DAYS BEFORE THE BID OPENING.
FOR: Mechanical Replacement at Edward Hynes School 990 Harrison Ave New Orleans, LA 70124
PROJECT NUMBER: ITB No. 26-FAC-0072
Complete Bidding Documents may be obtained from:
Marrero, Couvillion & Associates, LLC 2644 S. Sherwood Forest Blvd, Suite 200 Baton Rouge, LA 70816 Attn: Chad Blanchard cblanchard@mca-llc.com
(225) 408-8249
Bid documents will be emailed by Architect or a downloadable link will be provided to obtain bid documents in PDF format.
All Bids must be accompanied by bid security equal to five percent (5%) of the sum of the Base Bid and all Alternates, and must be in the form of a certified check, cashier's check or the Orleans Parish School Board Bid Bond Form written by a surety company licensed to do business in Louisiana, signed by the surety's agency or attorney-in-fact. Surety must be listed on the current U.S. Department of the Treasury Financial Management Service list of approved bonding companies as approved for an amount equal to or greater than the amount for which it obligates itself in the Bond, or must be a Louisiana domiciled insurance company with at least an A - rating in the latest printing of the A.M. Best's Key Rating Guide. If surety qualifies by virtue of its Best's listing, the amount of the Bond may not exceed ten percent of policyholders' surplus as shown in the latest A.M. Best's Key Rating Guide. The Bid Bond shall be in favor of the Orleans Parish School Board, and shall be accompanied by appropriate power of attorney. No Bid Bond indicating an obligation of less than five percent (5%) by any method is acceptable.
The successful Bidder shall be required to furnish a Performance Bond and a Payment Bond written by a company licensed to do business in Louisiana, in an amount equal to 100% of the Contract amount. Surety must be listed currently on the U. S. Department of Treasury Financial Management Service List (Treasury List) as approved for an amount equal to or greater than the contract amount, or must be an insurance company domiciled in Louisiana. If the Surety is not listed on the Treasury List, and has less than an “A-“ rating (as shown in the latest edition of A.M. Best’s Key Rating Guide) the maximum Contract amount for which that Surety may provide a Bond is $500,000.00 (Five Hundred Thousand Dollars), or fifteen percent of
20260701 ADV-2
the Surety’s policyholders' surplus (as shown by Surety's most recent financial statements filed with the Louisiana Department of Insurance), whichever is less. If the Surety is not listed on the Treasury List, and has at least an “A”- rating or better (as shown in the latest edition of A.M. Best’s Key Rating Guide), the maximum Contract amount for which that Surety may provide a Bond is fifteen percent of the Surety’s policyholders' surplus (as shown by Surety's most recent financial statements filed with the Louisiana Department of Insurance. The Bond shall be signed by the surety's agent or attorney-in-fact, and shall be in favor of the Orleans Parish School Board.
A PRE-BID CONFERENCE WILL BE HELD
at 10:00 a.m. Thursday, July 23, 2026 at Edward Hynes School located at 990 Harrison
Ave, New Orleans, LA 70124.
Attendance at this conference is NOT required but highly encouraged and Bidders are advised that they will be required to state on the Bid Form that they are familiar with the Project site located at 990 Harrison Ave, New Orleans, LA 70124.
Bids shall be accepted from Contractors who are licensed under LA. R.S. 37:2150-2163 for the classification of Building Construction or Mechanical Construction. Bidder is required to comply with provisions and requirements of LA R.S.38:2212 (A)(1)(a). No bid may be withdrawn for a period of thirty (30) days after receipt of bids, except under the provisions of LA. R.S. 38:2214.
The Owner reserves the right to reject any and all bids for just cause. In accordance with La. R.S. 38:2212 (B)(1), the provisions and requirements of this Section, those stated in the advertisement bids, and those required on the bid form shall not be considered as informalities and shall not be waived by any public entity.
NOTICE OF PUBLIC FUNDING:
Notice is hereby given that this Project is to be financed in whole or in part by federal or other funds which will not be readily available at the time the Bids are received. As a result, pursuant to La. R.S. 38:2215, the Owner is exempt from the requirement of acting to award the Contract or reject all Bids within forty-five (45) calendar days of receipt of the Bids. Pursuant to this Statute, the Owner specifically reserves the right to hold all Bids for greater than forty-five (45) calendar days.
The Orleans Parish School Board shall incur no obligation to the Contractor until the Contract Between Owner and Contractor is fully executed.
INCORPORATION OF INSTRUCTIONS TO BIDDERS INTO ADVERTISEMENT FOR BIDS
The Instructions to Bidders contained in the Bid Documents (referenced above), and all requirements contained therein, are incorporated into this Advertisement for Bids as if completely set forth herein.
By: Mr. Paul Lucius Executive Director of Procurement
Insertion dates: (1) Wednesday, July 8, 2026
(2) Wednesday, July 15, 2026
(3) Wednesday, July 22, 2026
| Div 00 |
| 0.0-Cover title |
| 0.1-Table of Contents |
| 0.2 SEALS PAGE |
| 1.1-Front End-Advertised Bid template(20260701) |
| 2.1-Louisiana Uniform Public Work Bid Form |
| 6-OPSB - DBE Program (5.29.26) |
| 7-Federal Compliance Provisions for Construction Contracts (11.3.21) |
| 8.1-Sample contract OPSB Template-over 50k |
| 9a-Conditional Lien waiver_20241210 |
| 9b-Unconditional Lien Waiver_20241210 |
| 11-Sales Tax Exempt Form LDR R1020 |
| 12-A312PerformanceBond-2010 - Working Draft |
| 13-A312PaymentBond-2010 - Working Draft |
| 16-Schedule of Values sample |
| Div 01 |
| 011000 Summary_tmpl STILL NEEDS DATES |
| 012500 Substitution Procedures_tmpl |
| 012600 Contract Modification Procedures_tmpl |
| 012601 Contract Modification back up |
| 012900 Payment Procedures_tmpl |
| 013100 Project Management and Coordination_tmpl |
| 013200 Construction Progress Documentation_tmpl |
| 013233 Photographic Documentation_tmpl |
| 013300 Submittal Procedures_tmpl |
| 014000 Quality Requirements_tmpl |
| 014200 References_tmpl |
| 015000 Temporary Facilities and Controls_tmpl |
| 016000 Product Requirements_tmpl |
| 017300 Execution_tmpl |
| 017413 Progress and Final Cleaning_tmpl |
| 017700 Closeout Procedures_tmpl |
| 017823 Operation and Maintenance Data_tmpl |
| 017839 Project Record Documents_tmpl |
| 017900 Demonstration and Training_tmpl |
| 078413-095123-ARCH |
| 078413 - Penetration Firestopping |
| 095123 - Acoustical Tile Ceilings |
| 230513-238216_Mechanical |
| 230513 - Common Motor Requirements for HVAC Equipment |
| 230517 - Sleeves and Sleeve Seals for HVAC Piping |
| 230529 - Hangers and Supports for HVAC Piping and Equipment |
| 230553 - Identification for HVAC Piping and Equipment |
| 230593 - Testing, Adjusting, and Balancing for HVAC |
| 230719 - HVAC Piping Insulation (condensate, refrigerant) |
| 232300 - Refrigerant Piping |
| 236313 - Air-Cooled Refrigerant Condensers |
| 238216.13 FL - Refrigerant Air Coils |
| 260519-262816_Electrical Specifications |
| 260519 - LOW-VOLTAGE ELECTRICAL POWER CONDUCTORS AND CABLES.pdf (p.1-5) |
| PART 1 - GENERAL |
| 1.1 RELATED DOCUMENTS |
| A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. |
| 1.2 SUMMARY |
| A. Section Includes: |
| 1. Building wires and cables rated 600 V and less. |
| 2. Connectors, splices, and terminations rated 600 V and less. |
| 1.3 DEFINITIONS |
| A. VFC: Variable frequency controller. |
| 1.4 ACTION SUBMITTALS |
| A. Product Data: For each type of product. |
| 1.5 INFORMATIONAL SUBMITTALS |
| A. Qualification Data: For testing agency. |
| B. Field quality-control reports. |
| 1.6 QUALITY ASSURANCE |
| A. Testing Agency Qualifications: Member company of NETA or an NRTL. |
| 1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing. |
| PART 2 - PRODUCTS |
| 2.1 CONDUCTORS AND CABLES |
| A. Aluminum and Copper Conductors: Comply with NEMA WC 70/ICEA S-95-658. |
| B. Conductor Insulation: Comply with NEMA WC 70/ICEA S-95-658 for Type THHN/THWN-2. |
| C. Multiconductor Cable: Comply with NEMA WC 70/ICEA S-95-658 for metal-clad cable, Type MC with ground wire. |
| D. VFC Cable: |
| 1. Comply with UL 1277, UL 1685, and NFPA 70 for Type TC-ER cable. |
| 2. Type TC-ER with oversized crosslinked polyethylene insulation, dual spirally wrapped copper tape shields and three bare symmetrically applied ground wires, and sunlight- and oil-resistant outer PVC jacket. |
| 3. Comply with UL requirements for cables in direct burial applications. |
| 2.2 CONNECTORS AND SPLICES |
| A. Description: Factory-fabricated connectors and splices of size, ampacity rating, material, type, and class for application and service indicated. |
| 2.3 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 NFPA 70. |
| 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, except VFC cable, which shall be extra flexible stranded. |
| 3.2 CONDUCTOR INSULATION AND MULTICONDUCTOR CABLE APPLICATIONS AND WIRING METHODS |
| A. Service Entrance: Type THHN/THWN-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 Installed below Raised Flooring: Type THHN/THWN-2, single conductors in raceway. |
| E. Feeders in Cable Tray: Type THHN/THWN-2, single conductors in raceway. |
| F. Exposed Branch Circuits, Including in Crawlspaces: Type THHN/THWN-2, single conductors in raceway. |
| G. Branch Circuits Concealed in Ceilings, Walls, and Partitions: Type THHN/THWN-2, single conductors in raceway. |
| H. Branch Circuits Concealed in Concrete, below Slabs-on-Grade, and Underground: Type THHN/THWN-2, single conductors in raceway. |
| I. Branch Circuits Installed below Raised Flooring: Type THHN/THWN-2, single conductors in raceway. |
| J. Branch Circuits in Cable Tray: Type THHN/THWN-2, single conductors in raceway. |
| K. Cord Drops and Portable Appliance Connections: Type SO, hard service cord with stainless-steel, wire-mesh, strain relief device at terminations to suit application. |
| L. VFC Output Circuits: Type XHHW-2 in metal conduit. |
| 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. |
| F. Support cables according to Section 260529 "Hangers and Supports for Electrical Systems." |
| G. Complete cable tray systems installation prior to installing conductors and cables. |
| 3.4 CONNECTIONS |
| A. Tighten electrical connectors and terminals according to manufacturer's published torque-tightening 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 (150 mm) of slack.
| 3.5 IDENTIFICATION |
| A. Identify and color-code conductors and cables according to Section 260553 "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. |
| 3.8 FIELD QUALITY CONTROL |
| A. Testing Agency: Engage a qualified testing agency to perform tests and inspections. |
| B. Manufacturer's Field Service: Engage a factory-authorized service representative to test and inspect components, assemblies, and equipment installations, including connections. |
| C. Perform the following tests and inspections with the assistance of a factory-authorized service representative: |
| 1. After installing conductors and cables and before electrical circuitry has been energized, test service entrance and feeder conductors and conductors feeding the following critical equipment and services for compliance with requirements. |
| 2. Perform each visual and mechanical inspection and electrical test stated in NETA Acceptance Testing Specification. Certify compliance with test parameters. |
| 3. Infrared Scanning: After Substantial Completion, but not more than 60 days after Final Acceptance, perform an infrared scan of each splice in conductors No. 3 AWG and larger. Remove box and equipment covers so splices are accessible to portable sca... |
| a. Follow-up Infrared Scanning: Perform an additional follow-up infrared scan of each splice 11 months after date of Substantial Completion. |
| b. Instrument: Use an infrared scanning device designed to measure temperature or to detect significant deviations from normal values. Provide calibration record for device. |
| c. Record of Infrared Scanning: Prepare a certified report that identifies splices checked and that describes scanning results. Include notation of deficiencies detected, remedial action taken, and observations after remedial action. |
| D. Test and Inspection Reports: Prepare a written report to record the following: |
| 1. Procedures used. |
| 2. Results that comply with requirements. |
| 3. Results that do not comply with requirements and corrective action taken to achieve compliance with requirements. |
E. Cables will be considered defective if they do not pass tests and inspections.
| 260526 - GROUNDING AND BONDING FOR ELECTRICAL SYSTEMS.pdf (p.6-12) |
| PART 1 - GENERAL |
| 1.1 RELATED DOCUMENTS |
| A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. |
| 1.2 SUMMARY |
| A. Section includes grounding and bonding systems and equipment. |
| 1.3 ACTION SUBMITTALS |
| A. Product Data: For each type of product indicated. |
| 1.4 INFORMATIONAL SUBMITTALS |
| A. As-Built Data: Plans showing dimensioned as-built locations of grounding features specified in "Field Quality Control" Article, including the following: |
| 1. Test wells. |
| 2. Ground rods. |
| 3. Ground rings. |
| 4. Grounding arrangements and connections for separately derived systems. |
| B. Qualification Data: For testing agency and testing agency's field supervisor. |
| C. Field quality-control reports. |
| 1.5 CLOSEOUT SUBMITTALS |
| A. Operation and Maintenance Data: For grounding to include in emergency, operation, and maintenance manuals. |
| 1. In addition to items specified in Section 017823 "Operation and Maintenance Data," include the following: |
| a. Instructions for periodic testing and inspection of grounding features at grounding connections for separately derived systems based on NFPA 70B. |
| 1) Tests shall determine if ground-resistance or impedance values remain within specified maximums, and instructions shall recommend corrective action if values do not. |
| 2) Include recommended testing intervals. |
| 1.6 QUALITY ASSURANCE |
| A. Testing Agency Qualifications: Member company of NETA or an NRTL. |
| 1. Testing Agency's Field Supervisor: Certified by NETA to supervise on-site testing. |
| B. 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. |
| C. Comply with UL 467 for grounding and bonding materials and equipment. |
| PART 2 - PRODUCTS |
| 2.1 MANUFACTURERS |
| 2.2 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. |
| 2.3 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 (6 mm) 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 (41 mm) wide and 1/16 inch (1.6 mm) thick. |
| 7. Tinned Bonding Jumper: Tinned-copper tape, braided conductors terminated with copper ferrules; 1-5/8 inches (41 mm) wide and 1/16 inch (1.6 mm) thick. |
C. Grounding Bus: Predrilled rectangular bars of annealed copper, 1/4 by 4 inches (6.3 by 100 mm) in cross section, with 9/32-inch (7.14-mm) holes spaced 1-1/8 inches (28 mm) apart. Stand-off insulators for mounting shall comply with UL 891 for use in...
| 2.4 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. Bolted Connectors for Conductors and Pipes: Copper or copper alloy. |
| C. Welded Connectors: Exothermic-welding kits of types recommended by kit manufacturer for materials being joined and installation conditions. |
| D. Bus-Bar Connectors: Mechanical type, cast silicon bronze, solderless compression-type wire terminals, and long-barrel, two-bolt connection to ground bus bar. |
| 2.5 GROUNDING ELECTRODES |
| A. Ground Rods: Copper-clad steel; 3/4 inch by 10 feet (19 mm by 3 m). |
| B. Chemical-Enhanced Grounding Electrodes: Copper tube, straight or L-shaped, charged with nonhazardous electrolytic chemical salts. |
| 1. Termination: Factory-attached No. 4/0 AWG bare conductor at least 48 inches (1200 mm) long. |
| 2. Backfill Material: Electrode manufacturer's recommended material. |
| PART 3 - EXECUTION |
| 3.1 APPLICATIONS |
| A. Conductors: Install solid conductor for No. 8 AWG and smaller, and stranded conductors for No. 10 AWG and larger unless otherwise indicated. |
| B. Underground Grounding Conductors: Install bare tinned-copper conductor, AWG minimum. |
| 1. Bury at least 24 inches (600 mm) below grade. |
| 2. Duct-Bank Grounding Conductor: Bury 12 inches (300 mm) above duct bank when indicated as part of duct-bank installation. |
| C. Isolated Grounding Conductors: Green-colored insulation with continuous yellow stripe. On feeders with isolated ground, identify grounding conductor where visible to normal inspection, with alternating bands of green and yellow tape, with at least ... |
| D. Grounding Bus: Install in electrical equipment rooms, in rooms housing service equipment, and elsewhere as indicated. |
| 1. Install bus horizontally, on insulated spacers 2 inches (50 mm) minimum from wall, 6 inches (150 mm) 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. |
| E. 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 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. Single-phase motor and appliance branch circuits. |
| 3. Three-phase motor and appliance branch circuits. |
| 4. Flexible raceway runs. |
| 5. Armored and metal-clad cable runs. |
| 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 ... |
| 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. |
| E. Isolated Grounding Receptacle Circuits: Install an insulated equipment grounding conductor connected to the receptacle grounding terminal. Isolate conductor from raceway and from panelboard grounding terminals. Terminate at equipment grounding cond... |
| F. Isolated Equipment Enclosure Circuits: For designated equipment supplied by a branch circuit or feeder, isolate equipment enclosure from supply circuit raceway with a nonmetallic raceway fitting listed for the purpose. Install fitting where raceway... |
| 3.5 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. G round Rods: Drive rods until tops are 2 inches (50 mm) 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. |
| 2. For grounding electrode system, install at least three rods spaced at least one-rod length from each other and located at least the same distance from other grounding electrodes, and connect to the service grounding electrode conductor. |
| 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 servi... |
| 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. |
E. Bonding Interior Metal Ducts: Bond metal air ducts to equipment grounding conductors of associated fans, blowers, electric heaters, and air cleaners. Install tinned bonding jumper to bond across flexible duct connections to achieve continuity.
| 3.6 FIELD QUALITY CONTROL |
| A. Testing Agency: Owner will engage a qualified testing agency to perform tests and inspections. |
| B. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect, test, and adjust components, assemblies, and equipment installations, including connections. |
| C. Perform tests and inspections. |
| 1. Manufacturer's Field Service: Engage a factory-authorized service representative to inspect components, assemblies, and equipment installations, including connections, and to assist in testing. |
| D. 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, 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 natura... |
| 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 dri...
| E. Grounding system will be considered defective if it does not pass tests and inspections. |
| F. Prepare test and inspection reports. |
| G. 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. Power Distribution Units or Panelboards Serving Electronic Equipment: 1 ohm(s). |
| 5. Substations and Pad-Mounted Equipment: 5 ohms. |
| 6. Manhole Grounds: 10 ohms. |
H. Excessive Ground Resistance: If resistance to ground exceeds specified values, notify Architect promptly and include recommendations to reduce ground resistance.
| 260529 - HANGERS AND SUPPORTS FOR ELECTRICAL SYSTEMS.pdf (p.13-18) |
| PART 1 - GENERAL |
| 1.1 RELATED DOCUMENTS |
| A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. |
| 1.2 SUMMARY |
| A. This Section includes the following: |
| 1. Hangers and supports for electrical equipment and systems. |
| 2. Construction requirements for concrete bases. |
| 1.3 DEFINITIONS |
| A. EMT: Electrical metallic tubing. |
| B. IMC: Intermediate metal conduit. |
| C. RMC: Rigid metal conduit. |
| 1.4 PERFORMANCE REQUIREMENTS |
| A. Delegated Design: Design supports for multiple raceways, including comprehensive engineering analysis by a qualified professional engineer, using performance requirements and design criteria indicated. |
| B. Design supports for multiple raceways capable of supporting combined weight of supported systems and its contents. |
| C. Design equipment supports capable of supporting combined operating weight of supported equipment and connected systems and components. |
| D. Rated Strength: Adequate in tension, shear, and pullout force to resist maximum loads calculated or imposed for this Project, with a minimum structural safety factor of five times the applied force. |
| 1.5 ACTION SUBMITTALS |
| A. Product Data: For the following: |
| 1. Steel slotted support systems. |
| 2. Nonmetallic slotted support systems. |
| B. Shop Drawings: Signed and sealed by a qualified professional engineer. Show fabrication and installation details and include calculations for the following: |
| 1. Trapeze hangers. Include Product Data for components. |
| 2. Steel slotted channel systems. Include Product Data for components. |
| 3. Nonmetallic slotted channel systems. Include Product Data for components. |
| 4. Equipment supports. |
| 1.6 INFORMATIONAL SUBMITTALS |
| A. Welding certificates. |
| 1.7 QUALITY ASSURANCE |
| A. Welding: Qualify procedures and personnel according to AWS D1.1/D1.1M, "Structural Welding Code - Steel." |
| B. Comply with NFPA 70. |
| 1.8 COORDINATION |
| A. Coordinate size and location of concrete bases. Cast anchor-bolt inserts into bases. Concrete, reinforcement, and formwork requirements are specified together with concrete Specifications. |
| B. Coordinate installation of roof curbs, equipment supports, and roof penetrations. |
| PART 2 - PRODUCTS |
| 2.1 SUPPORT, ANCHORAGE, AND ATTACHMENT COMPONENTS |
| A. Steel Slotted Support Systems: Comply with MFMA-4, factory-fabricated components for field assembly. |
| 1. Metallic Coatings: Hot-dip galvanized after fabrication and applied according to MFMA-4. |
| 2. Nonmetallic Coatings: Manufacturer's standard PVC, polyurethane, or polyester coating applied according to MFMA-4. |
| 3. Painted Coatings: Manufacturer's standard painted coating applied according to MFMA-4. |
| 4. Channel Dimensions: Selected for applicable load criteria. |
| B. Nonmetallic Slotted Support Systems: Structural-grade, factory-formed, glass-fiber-resin channels and angles with 9/16-inch- (14-mm-) diameter holes at a maximum of 8 inches (200 mm) o.c., in at least 1 surface. |
| 1. Fittings and Accessories: Products of channel and angle manufacturer and designed for use with those items. |
| 2. Fitting and Accessory Materials: Same as channels and angles, except metal items may be stainless steel. |
| 3. Rated Strength: Selected to suit applicable load criteria. |
| C. Raceway and Cable Supports: As described in NECA 1 and NECA 101. |
| D. Conduit and Cable Support Devices: Steel hangers, clamps, and associated fittings, designed for types and sizes of raceway or cable to be supported. |
| E. Support for Conductors in Vertical Conduit: Factory-fabricated assembly consisting of threaded body and insulating wedging plug or plugs for non-armored electrical conductors or cables in riser conduits. Plugs shall have number, size, and shape of ... |
| F. Structural Steel for Fabricated Supports and Restraints: ASTM A 36/A 36M, steel plates, shapes, and bars; black and galvanized. |
| G. 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, stainless steel, for use in hardened portland cement concrete with tension, shear, and pullout capacities appropriate for supported loads and building materials in which used. |
| 3. Concrete Inserts: Steel or malleable-iron, slotted support system units similar to MSS Type 18; complying with MFMA-4 or MSS SP-58. |
| 4. Clamps for Attachment to Steel Structural Elements: MSS SP-58, type suitable for attached structural element. |
| 5. Through Bolts: Structural type, hex head, and high strength. Comply with ASTM A 325. |
| 6. Toggle Bolts: All-steel springhead type. |
| 7. Hanger Rods: Threaded steel. |
| 2.2 FABRICATED METAL EQUIPMENT SUPPORT ASSEMBLIES |
| A. Description: Welded or bolted, structural-steel shapes, shop or field fabricated to fit dimensions of supported equipment. |
| B. Materials: Comply with requirements for steel shapes and plates. |
| PART 3 - EXECUTION |
| 3.1 APPLICATION |
| A. Comply with NECA 1 and NECA 101 for application of hangers and supports for electrical equipment and systems except if requirements in this Section are stricter. |
| B. Maximum Support Spacing and Minimum Hanger Rod Size for Raceway: Space supports for EMT, IMC, and RMC as required by scheduled in NECA 1, where its Table 1 lists maximum spacings less than stated in NFPA 70. Minimum rod size shall be 1/4 inch (6 mm... |
| C. Multiple Raceways or Cables: Install trapeze-type supports fabricated with steel slotted or other support system, sized so capacity can be increased by at least 25 percent in future without exceeding specified design load limits. |
| 1. Secure raceways and cables to these supports with two-bolt conduit clamps. |
D. Spring-steel clamps designed for supporting single conduits without bolts may be used for 1-1/2-inch (38-mm) and smaller raceways serving branch circuits and communication systems above suspended ceilings and for fastening raceways to trapeze suppo...
| 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, as permitted in 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 ... |
| 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 Existing Concrete: Expansion anchor fasteners. |
| 5. Instead of expansion anchors, powder-actuated driven threaded studs provided with lock washers and nuts may be used in existing standard-weight concrete 4 inches (100 mm) thick or greater. Do not use for anchorage to lightweight-aggregate concrete ... |
| 6. To Steel: Spring-tension clamps. |
| 7. To Light Steel: Sheet metal screws. |
| 8. 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 mean... |
E. Drill holes for expansion anchors in concrete at locations and to depths that avoid reinforcing bars.
| 3.3 INSTALLATION OF FABRICATED METAL SUPPORTS |
| A. Comply with installation requirements for site-fabricated metal supports. |
| B. Cut, fit, and place miscellaneous metal supports accurately in location, alignment, and elevation to support and anchor electrical materials and equipment. |
| C. Field Welding: Comply with AWS D1.1/D1.1M. |
| 3.4 CONCRETE BASES |
| A. Construct concrete bases of dimensions indicated but not less than 4 inches (100 mm) larger in both directions than supported unit, and so anchors will be a minimum of 10 bolt diameters from edge of the base. |
| B. Use 3000-psi (20.7-MPa), 28-day compressive-strength concrete. |
| C. Anchor equipment to concrete base. |
| 1. Place and secure anchorage devices. Use supported equipment manufacturer's setting drawings, templates, diagrams, instructions, and directions furnished with items to be embedded. |
| 2. Install anchor bolts to elevations required for proper attachment to supported equipment. |
| 3. Install anchor bolts according to anchor-bolt manufacturer's written instructions. |
| 3.5 PAINTING |
| A. Touchup: Clean field welds and abraded areas of shop paint. Paint exposed areas immediately after erecting hangers and supports. Use same materials as used for shop painting. Comply with SSPC-PA 1 requirements for touching up field-painted surfaces. |
| 1. Apply paint by brush or spray to provide minimum dry film thickness of 2.0 mils (0.05 mm). |
| B. Touchup: Comply with requirements for cleaning and touchup painting of field welds, bolted connections, and abraded areas of shop paint on miscellaneous metal. |
| C. Galvanized Surfaces: Clean welds, bolted connections, and abraded areas and apply galvanizing-repair paint to comply with ASTM A 780. |
| 260533 - RACEWAYS AND BOXES FOR ELECTRICAL SYSTEMS.pdf (p.19-28) |
| PART 1 - GENERAL |
| 1.1 RELATED DOCUMENTS |
| A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section. |
| 1.2 SUMMARY |
| A. Section Includes: |
| 1. Metal conduits, tubing, and fittings. |
| 2. Nonmetal conduits, tubing, and fittings. |
| 3. Metal wireways and auxiliary gutters. |
| 4. Nonmetal wireways and auxiliary gutters. |
| 5. Surface raceways. |
| 6. Boxes, enclosures, and cabinets. |
| 1.3 DEFINITIONS |
| A. ARC: Aluminum rigid conduit. |
| B. GRC: Galvanized rigid steel conduit. |
| C. IMC: Intermediate metal conduit. |
| 1.4 ACTION SUBMITTALS |
| A. Product Data: For surface raceways, wireways and fittings, floor boxes, hinged-cover enclosures, and cabinets. |
| B. LEED Submittals: |
| 1. Product Data for Credit IEQ 4.1: For solvent cements and adhesive primers, documentation including printed statement of VOC content. |
| 2. Laboratory Test Reports for Credit IEQ 4: For solvent cements and adhesive primers, documentation indicating that products comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the ... |
C. Shop Drawings: For custom enclosures and cabinets. Include plans, elevations, sections, and attachment details.
| 1.5 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. Qualification Data: For professional engineer. |
| C. Seismic Qualification Certificates: For enclosures, cabinets, and conduit racks and their mounting provisions, including those for internal components, from manufacturer. |
| 1. Basis for Certification: Indicate whether withstand certification is based on actual test of assembled components or on calculation. |
| 2. Dimensioned Outline Drawings of Equipment Unit: Identify center of gravity and locate and describe mounting and anchorage provisions. |
| 3. Detailed description of equipment anchorage devices on which the certification is based and their installation requirements. |
| 4. Detailed description of conduit support devices and interconnections on which the certification is based and their installation requirements. |
D. Source quality-control reports.
| PART 2 - PRODUCTS |
| 2.1 METAL CONDUITS, TUBING, AND FITTINGS |
| A. 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. |
| B. GRC: Comply with ANSI C80.1 and UL 6. |
| C. ARC: Comply with ANSI C80.5 and UL 6A. |
| D. IMC: Comply with ANSI C80.6 and UL 1242. |
| E. PVC-Coated Steel Conduit: PVC-coated rigid steel conduit. |
| 1. Comply with NEMA RN 1. |
| 2. Coating Thickness: 0.040 inch (1 mm), minimum. |
| F. EMT: Comply with ANSI C80.3 and UL 797. |
| G. FMC: Comply with UL 1; zinc-coated steel. |
| H. LFMC: Flexible steel conduit with PVC jacket and complying with UL 360. |
| I. Fittings for Metal Conduit: Comply with NEMA FB 1 and UL 514B. |
| 1. Conduit Fittings for Hazardous (Classified) Locations: Comply with UL 886 and NFPA 70. |
| 2. Fittings for EMT: |
| a. Material: Steel or die cast. |
| b. Type: compression. |
| 3. 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. |
| 4. Coating for Fittings for PVC-Coated Conduit: Minimum thickness of 0.040 inch (1 mm), with overlapping sleeves protecting threaded joints. |
J. 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 cond...
| 2.2 NONMETALLIC CONDUITS, TUBING, AND FITTINGS |
| A. Listing and Labeling: Nonmetallic 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. |
| B. RNC: Type EPC-40-PVC, complying with NEMA TC 2 and UL 651 unless otherwise indicated. |
| C. LFNC: Comply with UL 1660. |
| D. Fittings for ENT and RNC: Comply with NEMA TC 3; match to conduit or tubing type and material. |
| E. Fittings for LFNC: Comply with UL 514B. |
| F. Solvent cements and adhesive primers shall have a VOC content of 510 and 550 g/L or less, respectively, when calculated according to 40 CFR 59, Subpart D (EPA Method 24). |
| 2.3 METAL WIREWAYS AND AUXILIARY GUTTERS |
| A. Description: Sheet metal, complying with UL 870 and NEMA 250, 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. |
| C. Wireway Covers: Hinged type unless otherwise indicated. |
| D. Finish: Manufacturer's standard enamel finish. |
| 2.4 NONMETALLIC WIREWAYS AND AUXILIARY GUTTERS |
| A. Listing and Labeling: Nonmetallic wireways and auxiliary gutters shall be listed and labeled as defined in NFPA 70, by a qualified testing agency, and marked for intended location and application. |
| B. Description: Fiberglass polyester, extruded and fabricated to required size and shape, without holes or knockouts. Cover shall be gasketed with oil-resistant gasket material and fastened with captive screws treated for corrosion resistance. Connect... |
| C. Description: PVC, extruded and fabricated to required size and shape, and having snap-on cover, mechanically coupled connections, and plastic fasteners. |
| D. Fittings and Accessories: Couplings, offsets, elbows, expansion joints, adapters, hold-down straps, end caps, and other fittings shall match and mate with wireways as required for complete system. |
| E. Solvent cements and adhesive primers shall have a VOC content of 510 and 550 g/L or less, respectively, when calculated according to 40 CFR 59, Subpart D (EPA Method 24). |
| F. Solvent cements and adhesive primers shall comply with the testing and product requirements of the California Department of Health Services' "Standard Practice for the Testing of Volatile Organic Emissions from Various Sources Using Small-Scale Env... |
| 2.5 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. Manufacturer's standard enamel finish in color selected by Architect. |
| C. Surface Nonmetallic Raceways: Two- or three-piece construction, complying with UL 5A, and manufactured of rigid PVC with texture and color selected by Architect from manufacturer's standard colors. Product shall comply with UL 94 V-0 requirements f... |
| 2.6 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. Small Sheet Metal Pull and Junction Boxes: NEMA OS 1. |
| F. Cast-Metal Access, Pull, and Junction Boxes: Comply with NEMA FB 1 and UL 1773, cast aluminum with gasketed cover. |
| G. Box extensions used to accommodate new building finishes shall be of same material as recessed box. |
| H. Device Box Dimensions: 4 inches square by 2-1/8 inches deep (100 mm square by 60 mm deep). |
| I. Gangable boxes are allowed. |
| J. Hinged-Cover Enclosures: Comply with UL 50 and NEMA 250, with continuous-hinge cover with flush latch unless otherwise indicated. |
| 1. Metal Enclosures: Steel, finished inside and out with manufacturer's standard enamel. |
| 2. Nonmetallic Enclosures: Plastic. |
| 3. Interior Panels: Steel; all sides finished with manufacturer's standard enamel. |
| K. Cabinets: |
| 1. NEMA 250, 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. |
| PART 3 - EXECUTION |
| 3.1 RACEWAY APPLICATION |
| A. Outdoors: Apply raceway products as specified below unless otherwise indicated: |
| 1. Exposed Conduit: RNC, Type EPC-40-PVC. |
| 2. Concealed Conduit, Aboveground: RNC, Type EPC-40-PVC. |
| 3. Underground Conduit: RNC, Type EPC-40-PVC,. |
| 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 ENT or RNC. |
| 2. Exposed, Not Subject to Severe Physical Damage: RNC identified for such use. |
| 3. Exposed and Subject to Severe Physical Damage: IMC. Raceway locations include the following: |
| a. Mechanical rooms. |
| 4. Concealed in Ceilings and Interior Walls and Partitions: RNC, Type EPC-40-PVC. |
| 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 4 stainless steel in institutional and commercial kitchens and damp or wet locations. |
| C. Minimum Raceway Size: 3/4-inch (21-mm) 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 manufac... |
| 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. Install nonferrous conduit or tubing for circuits operating above 60 Hz. Where aluminum raceways are installed for such circuits and pass through concrete, install in nonmetallic sleeve. |
| F. Install surface raceways only where indicated on Drawings. |
| G. Do not install nonmetallic conduit where ambient temperature exceeds 120 deg F (49 deg C). |
| 3.2 INSTALLATION |
| A. 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 specif... |
| B. Keep raceways at least 6 inches (150 mm) away from parallel runs of flues and steam or hot-water pipes. Install horizontal raceway runs above water and steam piping. |
| C. Complete raceway installation before starting conductor installation. |
| D. Comply with requirements in Section 260529 "Hangers and Supports for Electrical Systems" for hangers and supports. |
| E. 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 (300 mm) of changes in direction. |
| F. Conceal conduit and EMT within finished walls, ceilings, and floors unless otherwise indicated. Install conduits parallel or perpendicular to building lines. |
| G. Support conduit within 12 inches (300 mm)of enclosures to which attached. |
| H. 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. |
| I. 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. |
| J. Coat field-cut threads on PVC-coated raceway with a corrosion-preventing conductive compound prior to assembly. |
| K. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating bushings to protect conductors including conductors smaller than No. 4 AWG. |
| L. 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 (35mm) trade size and insulated throat metal bushings on 1-1/2-inch (41-mm) trade size and lar... |
| M. Install raceways square to the enclosure and terminate at enclosures with locknuts. Install locknuts hand tight plus 1/4 turn more. |
This is the start of the file's text. The full file is on GovTribe.