17B0007_Amendment_0002_Specifications.pdf

ECS Crane Replacement 16002 Lake Washington Ship Canal, WA

00 73 00-A

W912DW-17-B-0007 R0002

INDEX OF DRAWINGS

FILE NO. E-2-3-244 DATED 14 JUNE 2017

SHEET

NUMBER

SHEET ID

TITLE

REVISION

DATE

1 G-001 TITLE, LOCATION AND VICINITY MAPS

2 G-002 DRAWING INDEX AND GENERAL

PROJECT DESCRIPTION

R0002 08/02/2017

3 C-101 GENERAL SITE AND ACCESS PLAN

4 C-102 CIVIL SITE PLAN

5 S-001 GENERAL NOTES R0002 08/02/2017

6 S-101 STRUCTURAL PLAN AND DETAILS

7 A-001 LEGEND, ABBREVIATIONS AND

GENERAL NOTES

8 AD101 DEMO 1 - OPERATING HOUSE DOOR

9 A-101 FLOOR PLANS AND SECTION

10 A-501 ARCHITECTURAL DETAILS

11 MD101 DEMO 1 - DERRICK CRANE AND DECK

12 MD401 DEMO 2 - OPERATING HOUSE

EQUIPMENT AND DECK

13 M-101 LUFFING CRANE LIFTING

REQUIREMENTS

14 M-201 LUFFING CRANE ELEVATION

15 M-501 DIESEL POWER GENERATOR

INSTALLATION

16 M-502 MECHANICAL DETAILS

17 E-001 ELECTRICAL LEGEND

18 ED101 ELECTRICAL DEMOLITION PLAN

19 ED401 EMERGENCY DAM HOIST HOUSE

DEMOLITION PLAN AND SECTIONS

20 ED402 CONTROL HOUSE DEMOLITION PLAN

AND SECTION

21 ED601 EXISTING ELECTRICAL ONE-LINE

DEMOLITION

22 E-101 EMERGENCY DAM HOIST HOUSE PLAN

AND SECTIONS

R0002 08/02/2017

23 E-401 CONTROL HOUSE ENLARGED PLANS

SHEET

SHEET ID

TITLE

24 E-601 ONE-LINE DIAGRAM R0002 08/02/2017

REFERENCE DRAWINGS

Reference drawings provided show conditions at time of construction. These drawings are furnished for information only and the Government does not warrant that conditions will be exactly as shown. Minor deviations can be anticipated and shall not be the basis for a claim for extra compensation.

Drawing File number_______________

REFERENCE

DRAWING

TITLE

1 14038 STIFF LEG DERRICK DESIGN -

OVERALL PLAN & SECTION

2 14051 GENERAL ARRANGEMENT OF

DERRICK CRANE

3 12424 DERRICK FOUNDATION

4 14040 MAST DESIGN

5 14122 BULL WHEEL DETAILS

6 14032 STEP BEARING (BASE OF MAST)

7 14117 STIFF LEGS DETAILS

8 14034 BOOM DETAILS

9 14118 BOOM DETAILS

10 14119 BOOM DETAILS

11 12458 MAIN HOIST BLOCK

12 12459 MAIN HOIST HANGER

13 12422 BLOCK & RIGGING (AUX HOIST)

14 14050 SWINGER (ROTATES CRANE)

15 12416 HOIST (SERVES BOOM, MAIN,

AND AUX HOISTS)

16 14044.1 CRANE OPERATING HOUSE

ELECTRICAL & GENERAL LAYOUT

17 14044.2 CRANE OPERATING HOUSE

ELECTRICAL & GENERAL LAYOUT

18 C-2-4-213_60 ELEVATION 125 TO 130

19 C-2-4-213_59 ELEVATION 120 TO 125

20 C-2-4-213_58 ELEVATION 115 TO 120

21 C-2-4-213_57 ELEVATION 110 TO 115

22 C-2-4-213_56 ELEVATION 105 TO 110

23 C-2-4-213_55 ELEVATION 100 TO 105

24 C-2-4-213_54 ELEVATION 95 TO 100

25 C-2-4-213_53 ELEVATION 90 TO 95

26 C-2-4-213_52 ELEVATION 85 TO 90

27 C-2-4-213_51.1 ELEVATION 80 TO 85

28 C-2-3-179_12 LOCK BULKHEADS TYPE

“A” PLAN AND SECTIONS

29 C-2-3-179_13 LOCK BULKHEADS TYPE

“B” PLAN AND SECTIONS

30 C-2-3-179_14 LOCK BULKHEADS TYPE

“C” PLAN AND SECTIONS

31 C-2-3-179_15 LOCK BULKHEADS

ROLLER END FRAMING

32 C-2-3-179_16 LOCK BULKHEADS PICK-

UP TRUSS GENERAL ARRANGEMENT

33 C-2-3-179_17 LOCK BULKHEADS PICK-

UP TRUSS PLAN AND ELEVATIONS

34 C-2-3-179_18 PICK-UP TRUSS SECTIONS

AND DETAILS I

35 C-2-3-179_19 PICK-UP TRUSS SECTIONS

AND DETAILS II

36 C-2-3-179_20 PICK-UP TRUSS HOOK

MECHANISM ASSEMBLY

37 C-2-3-179_21 PICK-UP TRUSS HOOK

MECHANISM DETAILS

38 C-2-3-179_22 PICK-UP TRUSS HOOK-UP

BEAM DETAILS

39 C-2-3-179_23 PICK-UP TRUSS

MISCELLANEOUS DETAILS

40 C-2-3-179_31A BULKHEAD STORAGE

PLAN SECTION AND DETAILS

41 C-2-3-179_31 STORAGE WHARF

REPLACEMENT, PLANS, SECTIONS AND

DETAILS

42 151 LAND WALL AT UPPER GUARD

GATE

R0002 08/02/2017

LWSC ESC Crane Replacement 16002

SECTION TABLE OF CONTENTS

DIVISION 05 - METALS

SECTION 05 05 23.16

STRUCTURAL WELDING

05/14

PART 1 GENERAL

1.1 REFERENCES

1.2 SUBMITTALS

1.3 QUALITY ASSURANCE

1.3.1 General Requirements

1.3.2 Previous Qualifications

1.3.3 Pre-qualified Procedures

1.3.4 Retests

1.3.5 Welder, Welding Operator, and Tacker Qualification

1.3.5.1 Previous Personnel Qualifications

1.3.5.2 Certificates

1.3.5.3 Renewal of Qualification

1.3.6 Inspector Qualification

1.3.7 Symbols and Safety

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

2.1.1 Pre-erection Conference

2.2 WELDING EQUIPMENT AND MATERIALS

PART 3 EXECUTION

3.1 WELDING OPERATIONS

3.1.1 Requirements

3.1.2 Identification

3.2 QUALITY CONTROL

3.3 STANDARDS OF ACCEPTANCE

3.3.1 Nondestructive Testing

3.3.2 Destructive Tests

3.4 GOVERNMENT INSPECTION AND TESTING

3.5 CORRECTIONS AND REPAIRS

-- End of Section Table of Contents --

SECTION 05 05 23.16 Page 1

SECTION 05 05 23.16

STRUCTURAL WELDING

05/14

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN INSTITUTE OF STEEL CONSTRUCTION (AISC)

AISC 360 (2010) Specification for Structural Steel Buildings

AMERICAN SOCIETY FOR NONDESTRUCTIVE TESTING (ASNT)

ANSI/ASNT CP-189 (2011) ASNT Standard for Qualification and Certification of Nondestructive Testing Personnel (ANSI/ASNT CP-105-2006)

AMERICAN WELDING SOCIETY (AWS)

AWS A2.4 (2012) Standard Symbols for Welding, Brazing and Nondestructive Examination

AWS D1.1/D1.1M (2010; Errata 2011) Structural Welding Code - Steel

AWS D1.3/D1.3M (2008; Errata 2008) Structural Welding Code - Sheet Steel

AWS D1.4/D1.4M (2011) Structural Welding Code - Reinforcing Steel

AWS D14.4/D14.4M (2012) Specification for Welded Joints for Machinery and Equipment

AWS Z49.1 (2012) Safety in Welding and Cutting and Allied Processes

ASTM INTERNATIONAL (ASTM)

ASTM E165/E165M (2012) Standard Practice for Liquid Penetrant Examination for General Industry

ASTM E709 (2014) Standard Guide for Magnetic Particle Examination

1.2 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When

SECTION 05 05 23.16 Page 2 used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Welding Quality Assurance Plan

SD-03 Product Data

Welding Procedure Qualifications ; G Welder, Welding Operator, and Tacker Qualification Inspector Qualification Previous Qualifications Pre-Qualified Procedures Welding Electrodes and Rods

SD-06 Test Reports

Nondestructive Testing

SD-07 Certificates

Certified Welding Procedure Specifications (WPS) Certified Brazing Procedure Specifications (BPS) Certified Procedure Qualification Records (PQR) Certified Welder Performance Qualifications (WPQ) Certified Brazer Performance Qualifications (BPQ)

1.3 QUALITY ASSURANCE

Except for pre-qualified (in accordance with AWS D1.1/D1.1M ) and previously qualified procedures, each Contractor performing welding must record in detail and qualify the welding procedure specification for any welding procedure followed in the fabrication of weldments. Conform welding procedure qualifications to AWS D1.1/D1.1M and to the specifications in this section. Submit for approval copies of the welding procedure specification and the results of the procedure qualification test records for each type of welding which requires procedure qualification and the welder, welding operator, or tacker qualification test records.. Approval of any procedure, however, does not relieve the Contractor of the sole responsibility for producing a finished structure meeting all the specified requirements. Submit this information on the forms in Annex M of AWS D1.1/D1.1M . Individually identify and clearly reference on the detail drawings and erection drawings all welding procedure specifications, or suitably key them to the contract drawings.

In case of conflict between this specification and AWS D1.1/D1.1M , this specification governs.

1.3.1 General Requirements

Fabricate work in an AISC Certified Fabrication Plant, Category Std .

Work must be erected by an AISC Certified Erector, Category ASCE.

a. For Structural Projects, provide documentation of the following:

(1) Component Thickness 1/8 inch and greater: Qualification documents (WPS, PQR, and WPQ) in accordance with AWS D1.1/D1.1M .

SECTION 05 05 23.16 Page 3

(2) Component Thickness Less than 1/8 inch : Qualification documents (WPS, PQR, and WPQ) in accordance with AWS D1.3/D1.3M .

(3) Reinforcing Steel: Qualification documents (WPS, PWR, and WPQ) in accordance with AWS D1.4/D1.4M .

b. For other applications, provide documentation of the following:

(1) Submit two copies of the Certified Welding Procedure Specifications (WPS) , Certified Brazing Procedure Specifications (BPS) and Certified Procedure Qualification Records (PQR) to the Contracting Officer for approval.

(2) Submit two copies of the Certified Welder Performance Qualifications (WPQ) and Certified Brazer Performance Qualifications (BPQ) to the Contracting Officer for approval within fifteen calendar days prior to any employee welding on the project material.

(3) Machinery: Qualification documents (WPS, PQR, and WPQ) in accordance with AWS D14.4/D14.4M .

1.3.2 Previous Qualifications

Welding procedures previously qualified by test may be accepted for this contract without re-qualification, upon receipt of the test results, if the following conditions are met:

a. Testing was performed by an approved testing laboratory, technical consultant, or the Contractor's approved quality control organization.

b. The qualified welding procedure conforms to the requirements of this specification and is applicable to welding conditions encountered under this contract.

c. The welder, welding operator, and tacker qualification tests conform to the requirements of this specification and are applicable to welding conditions encountered under this contract.

1.3.3 Pre-qualified Procedures

Welding procedures which are considered pre-qualified as specified in AWS D1.1/D1.1M will be accepted without further qualification. Submit for approval a listing or an annotated drawing to indicate the joints not pre-qualified. Procedure qualification is mandatory for these joints.

1.3.4 Retests

If welding procedure fails to meet the requirements of AWS D1.1/D1.1M , revise and re-qualify the procedure specification, or at the Contractor's option, welding procedure may be retested in accordance with AWS D1.1/D1.1M .

If the welding procedure is qualified through retesting, submit all test results, including those of test welds that failed to meet the requirements, with the welding procedure.

1.3.5 Welder, Welding Operator, and Tacker Qualification

Each welder, welding operator, and tacker assigned to work on this contract must be qualified in accordance with the applicable requirements

SECTION 05 05 23.16 Page 4 of AWS D1.1/D1.1M and as specified in this section. Welders, welding operators, and tackers who make acceptable procedure qualification test welds will be considered qualified for the welding procedure used.

1.3.5.1 Previous Personnel Qualifications

At the discretion of the Contracting Officer, welders, welding operators, and tackers qualified by test within the previous 6 months may be accepted for this contract without re-qualification if all the following conditions are met:

a. Copies of the welding procedure specifications, the procedure qualification test records, and the welder, welding operator, and tacker qualification test records are submitted and approved in accordance with the specified requirements for detail drawings.

b. Testing was performed by an approved testing laboratory, technical consultant, or the Contractor's approved quality control organization.

c. The previously qualified welding procedure conforms to the requirements of this specification and is applicable to welding conditions encountered under this contract.

d. The welder, welding operator, and tacker qualification tests conform to the requirements of this specification and are applicable to welding conditions encountered under this contract.

1.3.5.2 Certificates

Before assigning any welder, welding operator, or tacker to work under this contract, submit the names of the welders, welding operators, and tackers to be employed, and certification that each individual is qualified as specified. State in the certification the type of welding and positions for which the welder, welding operator, or tacker is qualified, the code and procedure under which the individual is qualified, the date qualified, and the name of the firm and person certifying the qualification tests. Keep the certification current, on file, and furnish 3 copies.

1.3.5.3 Renewal of Qualification

Re-qualification of a welder or welding operator is required under any of the following conditions:

a. It has been more than 6 months since the welder or welding operator has used the specific welding process for which he is qualified.

b. There is specific reason to question the welder or welding operator's ability to make welds that meet the requirements of these specifications.

c. The welder or welding operator was qualified by an employer other than those firms performing work under this contract, and a qualification test has not been taken within the past 12 months. Submit as evidence of conformance all records showing periods of employment, name of employer where welder, or welding operator, was last employed, and the process for which qualified.

d. A tacker who passes the qualification test is considered eligible to

SECTION 05 05 23.16 Page 5 perform tack welding indefinitely in the positions and with the processes for which he/she is qualified, unless there is some specific reason to question the tacker's ability. In such a case, the tacker is required to pass the prescribed tack welding test.

1.3.6 Inspector Qualification

Submit inspector qualifications that are in accordance with AWS D1.1/D1.1M .

Qualify all nondestructive testing personnel in accordance with the requirements of ANSI/ASNT CP-189 for Levels I or II in the applicable nondestructive testing method. The inspector may be supported by assistant welding inspectors who are not qualified to AWS D1.1/D1.1M , and assistant inspectors may perform specific inspection functions under the supervision of the qualified inspector, as allowed by AWS D1.1/D1.1M .

1.3.7 Symbols and Safety

Use symbols in accordance with AWS A2.4 , unless otherwise indicated.

Follow safe welding practices and safety precautions during welding in conformance with AWS Z49.1 .

PART 2 PRODUCTS

2.1 SYSTEM DESCRIPTION

Conform the design of welded connections to AISC 360 , unless otherwise indicated or specified. Material with welds will not be accepted unless the welding is specified or indicated on the drawings or otherwise approved. Perform welding as specified in this section, except where additional requirements are shown on the drawings or are specified in other sections. Do not commence welding until welding procedures, inspectors, nondestructive testing personnel, welders, welding operators, and tackers have been qualified and the submittals approved by the Contracting Officer. Perform all testing at or near the work site.

Maintain records of the test results obtained in welding procedure, welder, welding operator, and tacker performance qualifications.

2.1.1 Pre-erection Conference

Hold a pre-erection conference prior to the start of the field welding, to bring all affected parties together and to gain a naturally clear understanding of the project and the Welding Procedure Specifications (WPS) (submitted for all welding, including welding done using pre-qualified procedures). Mandatory attendance is required by all Contractor's welding production and inspection personnel and appropriate Government personnel. Include as items for discussion: responsibilities of various parties; welding procedures and processes to be followed;

welding sequence (both within a joint and joint sequence within the building); inspection requirements and procedures, both visual and nondestructive testing; welding schedule; and other items deemed necessary by the attendees.

2.2 WELDING EQUIPMENT AND MATERIALS

Provide all welding equipment, welding electrodes and rods, welding wire, and fluxes capable of producing satisfactory welds when used by a qualified welder or welding operator performing qualified welding procedures. Provide welding equipment and materials that comply with the applicable requirements of AWS D1.1/D1.1M . Submit product data on welding

SECTION 05 05 23.16 Page 6 electrodes and rods .

PART 3 EXECUTION

3.1 WELDING OPERATIONS

3.1.1 Requirements

Conform workmanship and techniques for welded construction to the requirements of AWS D1.1/D1.1M and AISC 360 . When AWS D1.1/D1.1M and the AISC 360 specification conflict, the requirements of AWS D1.1/D1.1M govern.

3.1.2 Identification

Identify all welds in one of the following ways:

a. Submit written records to indicate the location of welds made by each welder, welding operator, or tacker.

b. Identify all work performed by each welder, welding operator, or tacker with an assigned number, letter, or symbol to identify welds made by that individual. The Contracting Officer may require welders, welding operators, and tackers to apply their symbol next to the weld by means of rubber stamp, felt-tipped marker with waterproof ink, or other methods that do not cause an indentation in the metal. Place the identification mark for seam welds adjacent to the weld at 3 foot intervals. Identification with die stamps or electric etchers is not allowed.

3.2 QUALITY CONTROL

Perform testing using an approved inspection or testing laboratory or technical consultant; or if approved, the Contractor's inspection and testing personnel may be used instead of the commercial inspection or testing laboratory or technical consultant. Perform visual and magnetic particle inspections to determine conformance with paragraph STANDARDS OF ACCEPTANCE. Conform procedures and techniques for inspection with applicable requirements of AWS D1.1/D1.1M , ASTM E165/E165M , and ASTM E709.

Submit a Welding Quality Assurance Plan and records of tests and inspections.

3.3 STANDARDS OF ACCEPTANCE

Conform dimensional tolerances for welded construction, details of welds, and quality of welds with the applicable requirements of AWS D1.1/D1.1M and the contract drawings. Perform nondestructive testing by visual inspection and magnetic particle methods. The minimum extent of nondestructive testing must be random 10 percent of welds or joints, as indicated on the drawings. Submit all records of nondestructive testing .

3.3.1 Nondestructive Testing

The welding is subject to inspection and tests in the mill, shop, and field. Inspection and tests in the mill or shop do not relieve the Contractor of the responsibility to furnish weldments of satisfactory quality. When materials or workmanship do not conform to the specification requirements, the Government reserves the right to reject material or workmanship or both at any time before final acceptance of the structure containing the weldment. Any indication of a defect is regarded

SECTION 05 05 23.16 Page 7 as a defect, unless re-evaluation by nondestructive methods or by surface conditioning shows that no unacceptable defect is present. Submit all records of nondestructive testing in accordance with paragraph STANDARDS

OF ACCEPTANCE.

3.3.2 Destructive Tests

Make all repairs when metallographic specimens are removed from any part of a structure. Employ only qualified welders or welding operators, and use the proper joints and welding procedures, including peening or heat treatment if required, to develop the full strength of the members and joints cut and to relieve residual stress.

3.4 GOVERNMENT INSPECTION AND TESTING

In addition to the inspection and tests performed by the Contractor for quality control, the Government will perform inspection and testing for acceptance to the extent determined by the Contracting Officer. The costs of such inspection and testing will be borne by the Contractor if unsatisfactory welds are discovered, or by the Government if the welds are satisfactory. The work may be performed by the Government's own forces or under a separate contract for inspection and testing. The Government reserves the right to perform supplemental nondestructive and destructive tests to determine compliance with paragraph STANDARDS OF ACCEPTANCE.

3.5 CORRECTIONS AND REPAIRS

If inspection or testing indicates defects in the weld joints, repair defective welds using a qualified welder or welding operator as applicable. Conduct corrections in accordance with the requirements of AWS D1.1/D1.1M and the specifications. Repair all defects in accordance with the approved procedures. Repair defects discovered between passes before additional weld material is deposited. Wherever a defect is removed and repair by welding is not required, blend the affected area into the surrounding surface to eliminate sharp notches, crevices, or corners. After a defect is thought to have been removed, and before re-welding, examine the area by suitable methods to ensure that the defect has been eliminated. Repaired welds must meet the inspection requirements for the original welds.

-- End of Section --

SECTION 05 05 23.16 Page 8

DIVISION 26 - ELECTRICAL

SECTION 26 20 00

INTERIOR DISTRIBUTION SYSTEM

02/14

PART 1 GENERAL

1.1 REFERENCES

1.2 DEFINITIONS

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.4.1 Regulatory Requirements

1.4.2 Standard Products

1.4.2.1 Alternative Qualifications

1.4.2.2 Material and Equipment Manufacturing Date

1.5 WARRANTY

1.6 SEISMIC REQUIREMENTS

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

2.2 CONDUIT AND FITTINGS

2.2.1 Rigid Metallic Conduit

2.2.1.1 Rigid, Threaded Zinc-Coated Steel Conduit

2.2.2 Fittings for Metal Conduit

2.2.2.1 Fittings for Rigid Metal Conduit

2.3 CABINETS, JUNCTION BOXES, AND PULL BOXES

2.4 WIRES AND CABLES

2.4.1 Conductors

2.4.1.1 Minimum Conductor Sizes

2.4.2 Color Coding

2.4.2.1 Ground and Neutral Conductors

2.4.2.2 Ungrounded Conductors

2.4.3 Insulation

2.4.4 Bonding Conductors

2.5 SPLICES AND TERMINATION COMPONENTS

2.6 SWITCHES

2.6.1 Disconnect Switches

2.7 PANELBOARDS

2.7.1 Enclosure

2.7.2 Panelboard Buses

2.7.3 Circuit Breakers

2.7.3.1 Multipole Breakers

2.7.3.2 Circuit Breaker With Ground-Fault Circuit Interrupter

2.8 MOTOR SHORT-CIRCUIT PROTECTOR (MSCP)

2.9 MOTOR CONTROLLERS

2.9.1 Control Wiring

2.9.2 Control Circuit Terminal Blocks

2.9.2.1 Types of Terminal Blocks

2.9.3 Control Circuits

2.9.4 Enclosures for Motor Controllers

SECTION 26 20 00 Page 1

2.9.5 Multiple-Speed Motor Controllers and Reversible Motor

Controllers

2.9.6 Pushbutton Stations

2.10 MOTOR CONTROL CENTERS

2.10.1 Bus Systems

2.10.1.1 Horizontal and Main Buses

2.10.1.2 Vertical Bus

2.10.1.3 Ground Bus

2.10.1.4 Neutral Bus

2.11 LOCKOUT REQUIREMENTS

2.12 MANUFACTURER'S NAMEPLATE

2.13 FIELD FABRICATED NAMEPLATES

2.14 WARNING SIGNS

2.15 FACTORY APPLIED FINISH

2.16 SOURCE QUALITY CONTROL

2.16.1 Transformer Factory Tests

PART 3 EXECUTION

3.1 INSTALLATION

3.1.1 Wiring Methods

3.1.1.1 Pull Wire

3.1.2 Conduit Installation

3.1.2.1 Conduit Support

3.1.2.2 Directional Changes in Conduit Runs

3.1.2.3 Locknuts and Bushings

3.1.3 Boxes, Outlets, and Supports

3.1.3.1 Boxes

3.1.3.2 Pull Boxes

3.1.4 Mounting Heights

3.1.5 Splices

3.1.6 Grounding and Bonding

3.1.6.1 Grounding Connections

3.1.7 Equipment Connections

3.1.8 Repair of Existing Work

3.1.8.1 Workmanship

3.1.8.2 Existing Concealed Wiring to be Removed

3.1.8.3 Removal of Existing Electrical Distribution System

3.1.8.4 Continuation of Service

3.2 FIELD FABRICATED NAMEPLATE MOUNTING

3.3 WARNING SIGN MOUNTING

3.4 FIELD QUALITY CONTROL

3.4.1 Devices Subject to Manual Operation

3.4.2 600-Volt Wiring Test

-- End of Section Table of Contents --

SECTION 26 20 00 Page 2

SECTION 26 20 00

INTERIOR DISTRIBUTION SYSTEM

02/14

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to in the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM B1 (2013) Standard Specification for Hard-Drawn Copper Wire

ASTM B8 (2011) Standard Specification for Concentric-Lay-Stranded Copper Conductors, Hard, Medium-Hard, or Soft

ASTM D709 (2013) Laminated Thermosetting Materials

INSTITUTE OF ELECTRICAL AND ELECTRONICS ENGINEERS (IEEE)

IEEE 100 (2000; Archived) The Authoritative Dictionary of IEEE Standards Terms

IEEE C2 (2012; Errata 2012; INT 1-4 2012; INT 5-7 2013; INT 8 2014) National Electrical Safety Code

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

ANSI C80.1 (2005) American National Standard for Electrical Rigid Steel Conduit (ERSC)

NEMA 250 (2014) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA ICS 1 (2000; R 2008; E 2010) Standard for Industrial Control and Systems: General Requirements

NEMA ICS 2 (2000; R 2005; Errata 2008) Standard for Controllers, Contactors, and Overload Relays Rated 600 V

NEMA ICS 3 (2005; R 2010) Medium-Voltage Controllers Rated 2001 to 7200 V AC

NEMA ICS 4 (2010) Terminal Blocks

NEMA ICS 6 (1993; R 2011) Enclosures

NEMA KS 1 (2013) Enclosed and Miscellaneous

SECTION 26 20 00 Page 3

Distribution Equipment Switches (600 V Maximum)

NEMA ST 20 (1992; R 1997) Standard for Dry-Type Transformers for General Applications

NEMA Z535.4 (2011) American National Standard for Product Safety Signs and Labels

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2014; AMD 1 2013; Errata 1 2013; AMD 2 2013; Errata 2 2013; AMD 3 2014; Errata 3-4 2014; AMD 4-6 2014) National Electrical Code

NFPA 70E (2015; ERTA 1 2015) Standard for Electrical Safety in the Workplace

TELECOMMUNICATIONS INDUSTRY ASSOCIATION (TIA)

TIA-607 (2011b) Generic Telecommunications Bonding and Grounding (Earthing) for Customer Premises

U.S. NATIONAL ARCHIVES AND RECORDS ADMINISTRATION (NARA)

29 CFR 1910.147 Control of Hazardous Energy (Lock Out/Tag Out)

UNDERWRITERS LABORATORIES (UL)

UL 1063 (2006; Reprint Jul 2012) Machine-Tool Wires and Cables

UL 44 (2014; Reprint Feb 2015) Thermoset-Insulated Wires and Cables

UL 486A-486B (2013; Reprint Feb 2014) Wire Connectors

UL 486C (2013; Reprint Feb 2014) Splicing Wire Connectors

UL 489 (2013; Reprint Mar 2014) Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures

UL 50 (2007; Reprint Apr 2012) Enclosures for Electrical Equipment, Non-environmental Considerations

UL 508 (1999; Reprint Oct 2013) Industrial Control Equipment

UL 510 (2005; Reprint Jul 2013) Polyvinyl Chloride, Polyethylene and Rubber Insulating Tape

UL 514B (2012; Reprint Nov 2014) Conduit, Tubing

SECTION 26 20 00 Page 4 and Cable Fittings

UL 6 (2007; Reprint Nov 2014) Electrical Rigid Metal Conduit-Steel

UL 67 (2009; Reprint Apr 2015) Standard for Panelboards

UL 83 (2014) Thermoplastic-Insulated Wires and Cables

UL 845 (2005; Reprint Jul 2011) Motor Control Centers

UL 869A (2006) Reference Standard for Service Equipment

UL 943 (2006; Reprint Jun 2012) Ground-Fault Circuit-Interrupters

1.2 DEFINITIONS

Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, are as defined in

IEEE 100 .

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government. Submit the following in accordance with Section 01 33 00 .

SD-02 Shop Drawings

Panelboards ; G

Motor control centers ; G

Include wiring diagrams and installation details of equipment indicating proposed location, layout and arrangement, control panels, accessories, piping, ductwork, and other items that must be shown to ensure a coordinated installation. Identify circuit terminals on wiring diagrams and indicate the internal wiring for each item of equipment and the interconnection between each item of equipment. Indicate on the drawings adequate clearance for operation, maintenance, and replacement of operating equipment devices.

SD-03 Product Data

Circuit breakers ; G

Motor controllers ; G

Combination motor controllers ; G

SD-06 Test Reports

SECTION 26 20 00 Page 5

600-volt wiring test ; G

Grounding system test ; G

SD-10 Operation and Maintenance Data

Electrical Systems , Data Package 5; G

1.4 QUALITY ASSURANCE

1.4.1 Regulatory Requirements

In each of the publications referred to herein, consider the advisory provisions to be mandatory, as though the word, "shall" or "must" had been substituted for "should" wherever it appears. Interpret references in these publications to the "authority having jurisdiction," or words of similar meaning, to mean the Contracting Officer. Provide equipment, materials, installation, and workmanship in accordance with the mandatory and advisory provisions of NFPA 70 unless more stringent requirements are specified or indicated.

1.4.2 Standard Products

Provide materials and equipment that are products of manufacturers regularly engaged in the production of such products which are of equal material, design and workmanship and:

a. Have been in satisfactory commercial or industrial use for 2 years prior to bid opening including applications of equipment and materials under similar circumstances and of similar size.

b. Have been on sale on the commercial market through advertisements, manufacturers' catalogs, or brochures during the 2-year period.

c. Where two or more items of the same class of equipment are required, provide products of a single manufacturer; however, the component parts of the item need not be the products of the same manufacturer unless stated in this section.

1.4.2.1 Alternative Qualifications

Products having less than a 2-year field service record will be acceptable if a certified record of satisfactory field operation for not less than 6000 hours, exclusive of the manufacturers' factory or laboratory tests, is furnished.

1.4.2.2 Material and Equipment Manufacturing Date

Products manufactured more than 3 years prior to date of delivery to site are not acceptable.

1.5 WARRANTY

Provide equipment items supported by service organizations that are reasonably convenient to the equipment installation in order to render satisfactory service to the equipment on a regular and emergency basis during the warranty period of the contract.

SECTION 26 20 00 Page 6

1.6 SEISMIC REQUIREMENTS

Provide seismic details conforming to Section 13 48 00 , SEISMIC PROTECTION

FOR MISCELLANEOUS EQUIPMENT.

PART 2 PRODUCTS

2.1 MATERIALS AND EQUIPMENT

As a minimum, meet requirements of UL, where UL standards are established for those items, and requirements of NFPA 70 for all materials, equipment, and devices.

2.2 CONDUIT AND FITTINGS

Conform to the following:

2.2.1 Rigid Metallic Conduit

2.2.1.1 Rigid, Threaded Zinc-Coated Steel Conduit

ANSI C80.1 , UL 6 .

2.2.2 Fittings for Metal Conduit

UL 514B . Ferrous fittings: cadmium- or zinc-coated in accordance with

UL 514B .

2.2.2.1 Fittings for Rigid Metal Conduit

Threaded-type. Split couplings unacceptable.

2.3 CABINETS, JUNCTION BOXES, AND PULL BOXES

Volume greater than 100 cubic inches , UL 50 , hot-dip, zinc-coated, if sheet steel.

2.4 WIRES AND CABLES

Provide wires and cables in accordance applicable requirements of NFPA 70 and UL for type of insulation, jacket, and conductor specified or indicated. Do not use wires and cables manufactured more than 12 months prior to date of delivery to site.

2.4.1 Conductors

Provide the following:

a. Conductor sizes and capacities shown are based on copper, unless indicated otherwise.

b. Conductors No. 8 AWG and larger diameter: stranded.

c. Conductors No. 10 AWG and smaller diameter: solid.

d. Conductors for remote control, alarm, and signal circuits, classes 1, 2, and 3: stranded unless specifically indicated otherwise.

SECTION 26 20 00 Page 7

e. All conductors: copper.

2.4.1.1 Minimum Conductor Sizes

Provide minimum conductor size in accordance with the following:

a. Branch circuits: No. 12 AWG.

b. Class 1 remote-control and signal circuits: No. 14 AWG.

c. Class 2 low-energy, remote-control and signal circuits: No. 16 AWG.

d. Class 3 low-energy, remote-control, alarm and signal circuits: No. 22

AWG.

2.4.2 Color Coding

Provide color coding for service, feeder, branch, control, and signaling circuit conductors.

2.4.2.1 Ground and Neutral Conductors

Provide color coding of ground and neutral conductors as follows:

a. Grounding conductors: Green.

b. Neutral conductors: White.

c. Exception, where neutrals of more than one system are installed in same raceway or box, other neutrals color coding: white with a different colored (not green) stripe for each.

2.4.2.2 Ungrounded Conductors

Provide color coding of ungrounded conductors in different voltage systems as follows:

a. 208/120 volt, three-phase

(1) Phase A - black

(2) Phase B - red

(3) Phase C - blue

b. 480/277 volt, three-phase

(1) Phase A - brown

(2) Phase B - orange

(3) Phase C - yellow

c. 120/240 volt, single phase: Black and red

2.4.3 Insulation

Unless specified or indicated otherwise or required by NFPA 70 , provide power and lighting wires rated for 600-volts, Type THWN/THHN conforming to

SECTION 26 20 00 Page 8

UL 83 or Type XHHW conforming to UL 44 , except that grounding wire may be type TW conforming to UL 83 ; remote-control and signal circuits: Type TW or TF, conforming to UL 83 .

2.4.4 Bonding Conductors

ASTM B1, solid bare copper wire for sizes No. 8 AWG and smaller diameter;

ASTM B8, Class B, stranded bare copper wire for sizes No. 6 AWG and larger diameter.

2.5 SPLICES AND TERMINATION COMPONENTS

UL 486A-486B for wire connectors and UL 510 for insulating tapes.

Connectors for No. 10 AWG and smaller diameter wires: insulated, pressure-type in accordance with UL 486A-486B or UL 486C (twist-on splicing connector). Provide solderless terminal lugs on stranded conductors.

2.6 SWITCHES

2.6.1 Disconnect Switches

NEMA KS 1. Provide heavy duty-type switches where indicated, where switches are rated higher than 240 volts, and for double-throw switches.

Utilize Class R fuseholders and fuses for fused switches, unless indicated otherwise. Provide horsepower rated for switches serving as the motor-disconnect means. Provide switches in NEMA 4x 1, enclosure per

NEMA ICS 6 .

2.7 PANELBOARDS

Provide panelboards in accordance with the following:

a. UL 67 and UL 50 .

b. Panelboards for use as service disconnecting: additionally conform to

UL 869A .

c. Panelboards: circuit breaker-equipped.

d. Designed such that individual breakers can be removed without disturbing adjacent units or without loosening or removing supplemental insulation supplied as means of obtaining clearances as required by UL.

e. Where "space only" is indicated, make provisions for future installation of breaker sized as indicated.

f. Directories: indicate load served by each circuit of panelboard.

g. Directories: indicate source of service (upstream panel, switchboard, motor control center, etc.) to panelboard.

h. Type directories and mount in holder behind transparent protective covering.

i. Panelboard nameplates: provided in accordance with paragraph FIELD

FABRICATED NAMEPLATES.

SECTION 26 20 00 Page 9

2.7.1 Enclosure

Provide panelboard enclosure in accordance with the following:

a. UL 50 .

b. Cabinets mounted outdoors: hot-dipped galvanized after fabrication.

cb. Cabinets: painted in accordance with paragraph PAINTING.

d. Outdoor cabinets: NEMA 4x raintight with conduit hubs welded to the cabinet.

ec. Front edges of cabinets: form-flanged or fitted with structural shapes welded or riveted to the sheet steel, for supporting the panelboard front.

f d. All cabinets: fabricated such that no part of any surface on the finished cabinet deviates from a true plane by more than 1/8 inch .

ge. Holes: provided in the back of indoor surface-mounted cabinets, with outside spacers and inside stiffeners, for mounting the cabinets with a 1/2 inch clear space between the back of the cabinet and the wall surface.

hf . Flush doors: mounted on hinges that expose only the hinge roll to view when the door is closed.

i g. Each door: fitted with a combined catch and lock, except that doors over 24 inches long provided with a three-point latch having a knob with a T-handle, and a cylinder lock.

j h. Keys: two provided with each lock, with all locks keyed alike.

k i . Finished-head cap screws: provided for mounting the panelboard fronts on the cabinets.

2.7.2 Panelboard Buses

Support bus bars on bases independent of circuit breakers. Design main buses and back pans so that breakers may be changed without machining, drilling, or tapping. Provide isolated neutral bus in each panel for connection of circuit neutral conductors. Provide separate ground bus identified as equipment grounding bus per UL 67 for connecting grounding conductors; bond to steel cabinet.

2.7.3 Circuit Breakers

UL 489 , thermal magnetic-type having a minimum short-circuit current rating equal to the short-circuit current rating of the panelboard in which the circuit breaker will be mounted. Breaker terminals: UL listed as suitable for type of conductor provided. Series rated circuit breakers and plug-in circuit breakers are unacceptable.

2.7.3.1 Multipole Breakers

Provide common trip-type with single operating handle. Design breaker such that overload in one pole automatically causes all poles to open.

Maintain phase sequence throughout each panel so that any three adjacent

SECTION 26 20 00 Page 10 breaker poles are connected to Phases A, B, and C, respectively.

2.7.3.2 Circuit Breaker With Ground-Fault Circuit Interrupter

UL 943 and NFPA 70 . Provide with "push-to-test" button, visible indication of tripped condition, and ability to detect and trip on current imbalance of 6 milliamperes or greater per requirements of UL 943 for Class A ground-fault circuit interrupter.

2.8 MOTOR SHORT-CIRCUIT PROTECTOR (MSCP)

Motor short-circuit protectors, also called motor circuit protectors (MCPs): UL 508 and UL 489 , and provided as shown. Provide MSCPs that consist of an adjustable instantaneous trip circuit breaker used only in conjunction with a combination motor controller which provides coordinated motor branch-circuit overload and short-circuit protection. Rate MSCPs in accordance with the requirements of NFPA 70 .

2.9 MOTOR CONTROLLERS

Provide motor controllers in accordance with the following:

a. UL 508 , NEMA ICS 1 , and NEMA ICS 2 ,.

b. Provide controllers with thermal overload protection in each phase, and one spare normally open auxiliary contact, and one spare normally closed auxiliary contact.

c. Provide controllers for motors rated 1-hp and above with electronic phase-voltage monitors designed to protect motors from phase-loss, undervoltage, and overvoltage.

d. Provide protection for motors from immediate restart by a time adjustable restart relay.

e. When used with pressure, float, or similar automatic-type or maintained-contact switch, provide a hand/off/automatic selector switch with the controller.

f. Connections to selector switch: wired such that only normal automatic regulatory control devices are bypassed when switch is in "hand" position.

g. Safety control devices, such as low and high pressure cutouts, high temperature cutouts, and motor overload protective devices: connected in motor control circuit in "hand" and "automatic" positions.

h. Control circuit connections to hand/off/automatic selector switch or to more than one automatic regulatory control device: made in accordance with indicated or manufacturer's approved wiring diagram.

i. Provide a disconnecting means, capable of being locked in the open position, for the motor that is located in sight from the motor location and the driven machinery location. As an alternative, provide a motor controller disconnect, capable of being locked in the open position, to serve as the disconnecting means for the motor if it is in sight from the motor location and the driven machinery location.

j. Overload protective devices: provide adequate protection to motor

SECTION 26 20 00 Page 11 windings; be thermal inverse-time-limit type; and include manual reset-type pushbutton on outside of motor controller case.

l. Cover of combination motor controller and manual switch or circuit breaker: interlocked with operating handle of switch or circuit breaker so that cover cannot be opened unless handle of switch or circuit breaker is in "off" position.

2.9.1 Control Wiring

Provide control wiring in accordance with the following:

a. All control wire: stranded tinned copper switchboard wire with 600-volt flame-retardant insulation Type SIS meeting UL 44 , or Type MTW meeting UL 1063 , and passing the VW-1 flame tests included in those standards.

b. Hinge wire: Class K stranding.

c. Current transformer secondary leads: not smaller than No. 10 AWG.

d. Control wire minimum size: No. 14 AWG.

e. Power wiring for 480-volt circuits and below: the same type as control wiring with No. 12 AWG minimum size.

f. Provide wiring and terminal arrangement on the terminal blocks to permit the individual conductors of each external cable to be terminated on adjacent terminal points.

2.9.2 Control Circuit Terminal Blocks

Provide control circuit terminal blocks in accordance with the following:

a. NEMA ICS 4 .

b. Control circuit terminal blocks for control wiring: molded or fabricated type with barriers, rated not less than 600 volts.

c. Provide terminals with removable binding, fillister or washer head screw type, or of the stud type with contact and locking nuts.

d. Terminals: not less than No. 10 in size with sufficient length and space for connecting at least two indented terminals for 10 AWG conductors to each terminal.

e. Terminal arrangement: subject to the approval of the Contracting Officer with not less than four (4) spare terminals or 10 percent, whichever is greater, provided on each block or group of blocks.

f. Modular, pull apart, terminal blocks are acceptable provided they are of the channel or rail-mounted type.

g. Submit data showing that any proposed alternate will accommodate the specified number of wires, are of adequate current-carrying capacity, and are constructed to assure positive contact between current-carrying parts.

SECTION 26 20 00 Page 12

2.9.2.1 Types of Terminal Blocks

a. Short-Circuiting Type: Short-circuiting type terminal blocks:

furnished for all current transformer secondary leads with provision for shorting together all leads from each current transformer without first opening any circuit. Terminal blocks: comply with the requirements of paragraph CONTROL CIRCUIT TERMINAL BLOCKS above.

b. Load Type: Load terminal blocks rated not less than 600 volts and of adequate capacity: provided for the conductors for NEMA Size 3 and smaller motor controllers and for other power circuits, except those for feeder tap units. Provide terminals of either the stud type with contact nuts and locking nuts or of the removable screw type, having length and space for at least two indented terminals of the size required on the conductors to be terminated. For conductors rated more than 50 amperes, provide screws with hexagonal heads. Conducting parts between connected terminals must have adequate contact surface and cross-section to operate without overheating. Provide eEach connected terminal with the circuit designation or wire number placed on or near the terminal in permanent contrasting color.

2.9.3 Control Circuits

Control circuits: maximum voltage of 120 volts derived from a separate control source. Provide terminals and terminal boards. Provide separate control disconnect switch within controller. Provide one fused secondary lead with the other lead grounded.

2.9.4 Enclosures for Motor Controllers

NEMA ICS 6 .

2.9.5 Multiple-Speed Motor Controllers and Reversible Motor Controllers

Across-the-line-type, electrically and mechanically interlocked.

Multiple-speed controllers: include compelling relays and multiple-button, station-type with pilot lights for each speed.

2.9.6 Pushbutton Stations

Provide with "start/stop" momentary contacts having one normally open and one normally closed set of contacts, and red lights to indicate when motor is running. Stations: heavy duty, oil-tight design.

2.10 MOTOR CONTROL CENTERS

Provide motor control centers in accordance with the following:

a. UL 845 , NEMA ICS 2 , NEMA ICS 3 .

b. Wiring: Class I, Type B, in NEMA Type 4x 1 enclosure.

c. Provide control centers suitable for operation on 480-volt, 3-phase, 4-wire, 60 Hz system with minimum short-circuit withstand and interrupting rating of 65,000 amperes rms symmetrical.

d. Incoming power feeder: cable entering at the top or bottom of enclosure and terminating on terminal lugs.

SECTION 26 20 00 Page 13

e. Interconnecting wires: copper.

f. Terminal blocks: plug-in-type so that controllers may be removed without disconnecting individual control wiring.

2.10.1 Bus Systems

Provide the following bus systems. Power bus: be braced to withstand fault current of 65,000 amperes rms symmetrical. Wiring troughs:

isolated from horizontal and vertical bus bars.

2.10.1.1 Horizontal and Main Buses

Horizontal bus: continuous current rating of 1000 amperes. Main bus:

copper, silver-plated enclosed in isolated compartment at top of each vertical section. Main bus: isolated from wire troughs, starters, and other areas.

2.10.1.2 Vertical Bus

Vertical bus: continuous current rating of 800 amperes, and copper, tin-plated. Vertical bus: enclosed in flame-retardant, polyester glass "sandwich."

2.10.1.3 Ground Bus

Copper ground bus: provided full width of motor control center and equipped with necessary lugs.

2.10.1.4 Neutral Bus

Insulated neutral bus: provided continuous through the motor control center; neutral full rated. Provide lugs of appropriate capacity, as required.

2.11 LOCKOUT REQUIREMENTS

Provide disconnecting means capable of being locked out for machines and other equipment to prevent unexpected startup or release of stored energy in accordance with 29 CFR 1910.147 . Comply with requirements of Division 23, "Mechanical" for mechanical isolation of machines and other equipment.

2.12 MANUFACTURER'S NAMEPLATE

Provide on each item of equipment a nameplate bearing the manufacturer's name, address, model number, and serial number securely affixed in a conspicuous place; the nameplate of the distributing agent will not be acceptable.

2.13 FIELD FABRICATED NAMEPLATES

Provide field fabricated nameplates in accordance with the following:

a. ASTM D709.

b. Provide laminated plastic nameplates for each equipment enclosure, relay, switch, and device; as specified or as indicated on the drawings.

SECTION 26 20 00 Page 14

c. Each nameplate inscription: identify the function and, when applicable, the position.

d. Nameplates: melamine plastic, 0.125 inch thick, white with black center core.

f. Surface: matte finish. Corners: square. Accurately align lettering and engrave into the core.

g. Minimum size of nameplates: one by 2.5 inches .

h. Lettering size and style: a minimum of 0.25 inch high normal block style.

2.14 WARNING SIGNS

Provide warning signs for flash protection in accordance with NFPA 70E and NEMA Z535.4 for switchboards, panelboards, industrial control panels, and motor control centers that are in other than dwelling occupancies and are likely to require examination, adjustment, servicing, or maintenance while energized. Provide field installed signs to warn qualified persons of potential electric arc flash hazards when warning signs are not provided by the manufacturer. Provide marking that is clearly visible to qualified persons before examination, adjustment, servicing, or maintenance of the equipment.

2.15 FACTORY APPLIED FINISH

Provide factory-applied finish on electrical equipment in accordance with the following:

a. NEMA 250 corrosion-resistance test and the additional requirements as specified herein.

b. Interior and exterior steel surfaces of equipment enclosures:

thoroughly cleaned followed by a rust-inhibitive phosphatizing or equivalent treatment prior to painting.

c. Exterior surfaces: free from holes, seams, dents, weld marks, loose scale or other imperfections.

d. Interior surfaces: receive not less than one coat of corrosion-resisting paint in accordance with the manufacturer's standard practice.

e. Exterior surfaces: primed, filled where necessary, and given not less than two coats baked enamel with semigloss finish.

f. Equipment located indoors: ANSI Light Gray,.

g. Provide manufacturer's coatings for touch-up work and as specified in paragraph FIELD APPLIED PAINTING.

2.16 SOURCE QUALITY CONTROL

2.16.1 Transformer Factory Tests

Submittal: include routine NEMA ST 20 transformer test results on each

SECTION 26 20 00 Page 15 transformer and also provide the results of NEMA "design" and "prototype" tests that were made on transformers electrically and mechanically equal to those specified.

PART 3 EXECUTION

3.1 INSTALLATION

Electrical installations, including weatherproof and hazardous locations and ducts, plenums and other air-handling spaces: conform to requirements of NFPA 70 and IEEE C2 and to requirements specified herein.

3.1.1 Wiring Methods

Provide insulated conductors installed in rigid steel conduit except where specifically indicated or specified otherwise or required by NFPA 70 to be installed otherwise. Grounding conductor: separate from electrical system neutral conductor. Provide insulated green equipment grounding conductor for circuit(s) installed in conduit and raceways. Minimum conduit size: 3/4 inch in diameter for low voltage lighting and power circuits. Vertical distribution in multiple story buildings: made with metal conduit in fire-rated shafts, with metal conduit extending through shafts for minimum distance of 6 inches .

3.1.1.1 Pull Wire

Install pull wires in empty conduits. Pull wire: plastic having minimum 200-pound force tensile strength. Leave minimum 36 inches of slack at each end of pull wire.

3.1.2 Conduit Installation

Keep conduit minimum 6 inches away from parallel runs of flues and steam or hot water pipes. Install conduit parallel with or at right angles to ceilings, walls, and structural members where located above accessible ceilings and where conduit will be visible after completion of project.

3.1.2.1 Conduit Support

Support conduit by pipe straps, wall brackets, threaded rod conduit hangers, or ceiling trapeze. Fasten by wood screws to wood; by toggle bolts on hollow masonry units; by concrete inserts or expansion bolts on concrete or brick; and by machine screws, welded threaded studs, or spring-tension clamps on steel work. Threaded C-clamps may be used on rigid steel conduit only. Do not weld conduits or pipe straps to steel structures.