26_00_00_00_26_BASIC_ELECTRICAL_MATERIALS_AND_METHODS.PDF

SECTION 26 00 00.00 26

BASIC ELECTRICAL MATERIALS AND METHODS

11/14

PART 1 GENERAL

1.1 GENERAL INFORMATION

This section speicifies the electrical equipment and work required to complete the Look Out Point ACE-IT Cable Plant Modernization project. This section also applies to the equipment to be furnished and installed under Section 26 05 36.00 26, Cable Trays for Electrical Systems.

All equipment and systems shall be fully operational system as per the plans and specifications, which provide an overview of the major equipment covered by this contract.

This contract installation shall be in accordance with NFPA 70 and IEEE C2 except where otherwise specifically indicated on the contract drawings or called for in the specifications. Omission of details on the drawings or in the specifications shall not be construed as permitting deviations from Code requirements.

1.2 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.

AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI)

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

AMERICAN WELDING SOCIETY (AWS)

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

ASTM INTERNATIONAL (ASTM)

ASTM A123/A123M (2012) Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products

ASTM A 153/A 153M (2009) Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware

ASTM A780/A780M (2009) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

ASTM B633 (2011) Standard Specification for Electrodeposited Coatings of Zinc on Iron and Steel

ASTM A780/A780M (2009) Standard Practice for Repair of Damaged and Uncoated Areas of Hot-Dip Galvanized Coatings

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) National Electrical Safety Code

NATIONAL ELECTRICAL CONTRACTORS ASSOCIATION (NECA)

NECA 1 (2010.01.01) Standard for Good Workmanship in Electrical Construction

NATIONAL ELECTRICAL MANUFACTURERS ASSOCIATION (NEMA)

NEMA 250 (2008) Enclosures for Electrical Equipment (1000 Volts Maximum)

NEMA FB 1 (2007) Standard for Fittings, Cast Metal Boxes, and Conduit Bodies for Conduit, Electrical Metallic Tubing, and Cable

NEMA ICS 1 (2000; R 2005; R 2008) Standard for Industrial Control and Systems: General Requirements

NEMA ICS 6 (1993; R 2006) Industrial Control and Systems: Enclosures

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 70 (2011; Errata 2014) National Electrical Code

UNDERWRITERS LABORATORIES (UL)

UL 6 (2007; reprint Nov 2010) Electrical Rigid Metal Conduit-Steel

UL 467 (2007) Grounding and Bonding Equipment

UL 50 (2007) Enclosures for Electrical Equipment, Non-environmental Considerations

UL 514B (2004; R 2006 thru 2009) Conduit, Tubing and Cable Fittings

UL 870 (2008) Standard for Wireways, Auxiliary Gutters, and Associated Fittings

UL 2024 (2011) Standard for Safety Signaling, Optical Fiber and Communications Raceways and Cable Routing Assemblies

U.S. ARMY CORPS OF ENGINEERS (USACE)

EM 385-1-1 Safety and Health Requirements Manual

The Contractor shall be responsible for complying with the current edition and all changes posted on the web as of the effective date of this solicitation.

1.3 SUBMITTALS

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

submittals having an "I" designation are for information only. When used, a designation following the "G" or "I" designation identifies the office that will review the submittal for the Government. The following shall be submitted in accordance with SECTION 01 33 00 SUBMITTAL PROCEDURES:

SD-01 Preconstruction Submittals

Submit within 90 days after Notice To Proceed:

Lead Electrician Qualifications; I, HDC

Equipment Crate Size, Storage Location and Proposed Routing at Site

; I, HDC

SD-03 Product Data

Submit within 30 days after Notice To Proceed:

Rigid Metal Conduit; I, HDC

Rigid Metal Conduit Fittings; I, HDC

Conduit Hangers; I, HDC

Boxes And Enclosures; I, HDC

Field Fabricated Nameplate Mounting; I, HDC

1.4 DEFINITIONS

a. Unless otherwise specified or indicated, electrical and electronics terms used in these specifications, and on the drawings, shall be as defined in IEEE 100.

b. The technical sections referred to herein are those specification sections that describe products, installation procedures, and equipment and that refer to this section for detailed description of submittal types.

c. The technical paragraphs referred to herein are those paragraphs in PART 2 - PRODUCTS and PART 3 - EXECUTION of the technical sections that describe products, installation procedures, and equipment.

1.5 GENERAL REQUIREMENTS

1.5.1 Delivery, Storage, and Handling

Materials and equipment delivered and placed in storage shall be protected from the weather, humidity and temperature variations, dirt and dust, other contaminants, and physical damage. Equipment shall be shipped as completely assembled as feasible so as to require a minimum of installation work. Any device which cannot withstand the hazards of shipment when mounted in place on the equipment shall be carefully packed and shipped separately. These pieces shall be marked and fully identified so they can be readily mounted and connected. All finished painted surfaces and metal work shall be wrapped suitably or otherwise protected from damage during shipment. All spare parts and accessories shall be carefully packaged for long-term protection and storage and shall be clearly marked.

1.5.2 Corrosion Prevention

All screws, bolts, nuts, pins, studs, springs, washers and such other miscellaneous fastenings and fittings shall be of an approved corrosion-resisting material or shall be treated in an approved manner to render them resistant to corrosion. All fastenings which will be exposed directly to the weather shall be of corrosion resistant material.

a. Fastenings and Fittings. Screws, bolts, nuts, pins, studs, springs, washers and other miscellaneous fastening devices and fittings shall be of corrosion-resistant material or shall be treated in an approved manner to render them resistant to corrosion. Fasteners exposed directly to the weather shall be of corrosion-resisting material.

b. Corrosion-Resisting Materials. Corrosion-resisting steel, copper, brass, bronze, copper-nickel-copper alloys are acceptable corrosion-resisting materials.

c. Corrosion-Resisting Treatments. Hot dip galvanizing is an approved corrosion resisting treatment. Other corrosion resisting treatments may be used if approved. Treatments shall be in accordance with ASTM A 123/A 123M, ASTM A 153/A 153M, and ASTM B 633.

d. Finish. Final painting shall be done in accordance with paragraph Paint.

1.6 ADDITIONAL SUBMITTALS INFORMATION

Submittals required in other sections that refer to this section must conform to the following additional requirements as applicable.

1.6.1 Product Data

Product data shall be approved prior to procurement of associated materials and equipment. Submit complete descriptive literature and specifications of each product or system of products listed in the submittal article with original, legible manufacturer's cut sheets and data sheets to clearly indicate physical construction, operation, electrical characteristics, ratings, and associated hardware, as applicable. Include manufacturer's catalog numbers and designations, and clearly cross-reference with drawings as appropriate. Product data submitted for approval shall clearly show conformance with these specifications, including, but not being limited to, product manufacturers' declarations of conformance to applicable technical standards.

1.7 QUALITY ASSURANCE

1.7.1 Regulatory Requirements

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

1.7.2 Standard Products

Material and equipment shall be the standard products of manufacturers regularly engaged in the manufacture of these products and shall essentially duplicate items that have been in satisfactory use for at least 2 years prior to proposal due date.

1.7.2.1 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.

1.7.2.2 Material and Equipment Manufacturing Date

Products manufactured more than 3 years prior to date of delivery to site shall not be used, unless specified otherwise.

1.7.3 Workmanship

All work shall be completed in a neat and workmanlike manner and shall conform to the best modern practice in the class of work regardless of any omission in the contract drawings and specifications. Accepted industry practices are as described in NECA 1 and other ANSI approved installation standards.

1.8 CODE COMPLIANCE

The installation shall be in accordance with the National Electrical Code NFPA 70, and National Electrical Safety Code IEEE C2 except where more stringent requirements are indicated herein or shown on the Contract drawings. Where equipment is specified to conform to requirements of any code or standard such as UL, NEMA, etc., the design, fabrication and installation shall also conform to the code. Omission of details on the drawings or in the specifications shall not be construed as permitting deviations from Code requirements. The Contractor shall immediately notify the Contracting Officer of any requirements of the specifications or Contractor proposed materials or assemblies that do not comply with UL or NEMA. International Electrotechnical Commission (IEC) rated equipment will not be considered an acceptable alternative to specified NEMA ratings.

1.9 COORDINATION

a. The contract drawings indicate the extent and the general location and arrangement of equipment, conduit, and wiring. The Contractor shall become familiar with all details of the work and verify all dimensions in the field so that the equipment shall be properly located and readily accessible. All equipment and materials shall be located to avoid interference with mechanical or structural features;

otherwise, equipment shall be located according to the design and as shown. If any circumstances occur necessitating departures from the drawings, details of and reasons for departures shall be submitted and approved prior to implementing any change. In case interferences do develop, the Contracting Officer will decide which work shall be relocated regardless of which work was first installed. Structural members shall not be cut or drilled during installation of equipment and accessories unless specifically approved in writing.

b. Raceways, outlets, and other equipment and materials shall be carefully coordinated with new and existing mechanical or structural features prior to installation and positioned accordingly. Raceways, junction and outlet boxes shall not be supported from sheet metal roof decks. The Contractor shall coordinate the electrical requirements of the mechanical work and provide all power related circuits, wiring, hardware and structural support, even if not shown on the drawings.

1.10 MATERIALS AND EQUIPMENT

Materials and equipment shall be approved based on the manufacturer's published data. All electrical materials shall be new and unused.

Defective equipment or equipment damaged in the course of installation shall be replaced or repaired without cost to the Government in a manner meeting the approval of the Contracting Officer. Equipment of the same sevice should be the same make, type, and rating to be interchangeable.

Defective equipment or equipment damaged in the course of installation shall be replaced or repaired as approved by the Contracting Officer.

1.11 UL LISTING

The materials and equipment to be furnished under this specification shall be UL listed. The label or listing of the Underwriters Laboratories, Inc., shall be accepted as evidence that the materials or equipment conform to the applicable standards of that agency. In lieu of this label or listing, a statement from a nationally recognized, adequately equipped testing laboratory indicating that the items have been tested in accordance with required procedures and that the materials and equipment comply with all requirements of the governing authority will be accepted.

1.12 WARRANTY

The equipment items shall be supported by service organizations which 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.

1.13 MANUFACTURER'S NAMEPLATE

Each item of equipment shall have 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.

1.14 LEAD ELECTRICIAN QUALIFICATIONS

For each shift of on-site electrical work, the Contractor shall furnish a State licensed Journeyman Electrician with a minimum of five (5) years experience on construction of electrical upgrades similar to the size and complexity of this contract. Qualifications shall be submitted to the Contracting Officer for acceptance.

PART 2 PRODUCTS

2.1 FACTORY APPLIED FINISH

Electrical equipment shall have factory-applied painting systems which shall, as a minimum, meet the requirements of NEMA 250 corrosion-resistance test.

2.2 CONDUIT

All conduit shall be galvanized rigid steel, except where specifically shown or specified otherwise. Manufacturer's descriptive literature shall be submitted for approval

2.2.1 Rigid Metal Conduit

Rigid metal conduit shall be minimum 1-inch trade size and shall, in addition, be zinc coated (galvanized) both inside and outside by the hot-dip method and shall conform to UL 6 and ANSI C80.1. Thin-wall or EMT conduit shall not be allowed at any location.

2.2.2 Rigid Metal Conduit Fittings

Rigid metal conduit fittings shall be threaded and cadmium- or zinc-coated (by hot-dipped galvanizing or by electroplating) on the inside and outside and shall conform to NEMA FB 1, UL 467, and UL 514B. Fittings shall be galvanized cast or malleable iron. Expansion fittings shall be UL Listed, shall allow up to 4 inches of movement, and shall be required at construction joints.

2.2.3 Conduit Hangers

a. Conduit hangers shall be fabricated from two or more galvanized steel hanger rods, a galvanized steel horizontal member, U-bolts, clamps, and other attachments as necessary for securing hanger rods and conduits. Hanger rods shall be not smaller than 3/8-inch diameter and threaded either full length or for a sufficient distance at each end to permit at least 1-1/2 inches of adjustment. Horizontal members shall be standard structural steel shapes such as angles or channels, 1-1/2 by 1-1/2 inch or 1-5/8 by 1-5/8 inch, 12 gauge, cold-formed, lipped channel, and designed to accept special spring-held hardened steel nuts for securing hanger rods or other attachments. Nuts and clamps shall be compatible with the channel. Two or more channels may be welded together to form horizontal members of greater strength. All members shall be hot-dip galvanized after fabrication in accordance with ASTM A 123/A 123M or ASTM A 153/A 153M as applicable.

b. Conduit hangers shall be capable of supporting a load equal to the sum of the weights of the conduits and wires, the weight of the hanger itself, plus 200 pounds. The stress at the root of the thread of the hanger rods shall be not more than 9,475 psi at design load. The horizontal member shall be sized such that the maximum stress will be not more than 12,650 psi at design load. Hanger assemblies shall comply with the applicable requirements of SECTION 13 48 00.00 26, SEISMIC RESTRAINT FOR MECHANICAL AND ELECTRICAL EQUIPMENT.

2.3 BOXES AND ENCLOSURES

Each box shall have not less than the volume required by NFPA 70 for number of conductors enclosed in box. Cast-metal boxes installed in wet locations and boxes installed flush with the outside of exterior surfaces shall be gasketed. Cast-metal boxes with 3/32-inch wall thickness are acceptable.

Boxes larger than 6- by 4- by 4-inch nominal size shall be NEMA Type 12.

Boxes in other locations shall be sheet steel.

2.3.1 Steel Cabinets and Boxes

Steel cabinets and boxes, and other steel enclosures and their doors shall conform to NEMA 250 and UL 50. No box shall have less than four cover fastening screws. Junction and pull boxes shall be furnished with covers of the same gage metal as the box. Doors shall be equipped with flush or semi concealed hinges, with a vault type handle and a three-point catch.

Identifying nameplates shall be provided on the front of the doors with designations as shown on the contract drawings. Insulating standoffs, panels, and rail for mounting equipment shall be provided as required.

PART 3 EXECUTION

3.1 FIELD FABRICATED NAMEPLATE MOUNTING

Provide number, location, and letter designation of nameplates as indicated. All nameplates shall be fastened to enclosures in proper positions with round-head screws; screws holes shall be drilled and tapped, rivets shall not be used.

3.2 WARNING SIGN MOUNTING

Provide the number of signs required to be readable from each accessible side, but space the signs a maximum of 30 feet apart.

3.3 EQUIPMENT REMOVAL

All equipment and materials resulting from removal work shall become the property of the Contractor, except as listed below or unless otherwise directed by the Contracting Officer. All material, which becomes the property of the Contractor shall be removed from the site and shall be properly disposed of in accordance with the applicable Local, State and Federal regulations. Materials that cannot be removed daily shall be temporarily stored in areas specified and approved by the Contracting Officer.

3.4 DUST CONTROL

The amount of dust resulting from demolition shall be controlled to prevent the spread of dust to occupied portions of the Powerhouse and to avoid creation of a nuisance in the surrounding area. Use of water will not be permitted.

3.5 PROTECTION OF EXISTING PROPERTY

Before beginning any removal work, the Contractor shall survey the site and examine the drawings and specifications to determine the extent of the work. The Contractor shall take necessary precautions to avoid damage to existing items to remain in place, to be reused, or to remain the property of the Government; any damaged items shall be repaired or replaced as approved by the Contracting Officer. The Contractor shall coordinate the work of this section with all other work and shall construct and maintain shoring, bracing, and supports as required.

3.6 Repair of Zinc Coatings

Application of zinc coatings shall be in a manner and of a thickness and quality conforming to ASTM A 123/A 123M. In all cases where zinc coating is damaged by cutting, welding, or other causes, the affected areas shall be regalvanized by use of repair sticks or powders, as specified in ASTM A780/A780M, Type Zinc-based Solders, Annex A1. The repaired area shall be at least equal in thickness and protection as the original hot-dipped coating. Repairing of zinc coatings by painting with zinc-rich or other corrosion inhibiting paint will not be permitted.

3.7 CONDUIT

3.7.1 Installation

All conduit runs installed shall be terminated at devices or connection boxes and at the terminal cabinet in tapped holes having not less than 3-1/2 pipe threads, or in standard pipe-threaded couplings or nipples integral with or welded to the device or cabinet. Similar pipe-threaded connections shall be provided on the terminal cabinet for attaching incoming conduit. Other conduit connections shall be made with cast metal boxes and outlet fittings having threaded outlets and gasketed covers. No running threads on conduit will be permitted. Clamp-backs shall be used for mounting to concrete. All new conduit shall be installed in such a manner as to insure against trouble from the collection of trapped condensation and all runs shall be arranged to avoid traps wherever possible. Existing embedded conduits abandoned in place shall have the conduit stub capped to prevent dirt and water entry. Each abandoned conduit shall be labled at both ends indicating it being abandoned and the location of the other end. Pull boxes shall be furnished and installed, complete with covers, in conduit runs as required by the NEC and good practice in the trade, and per this section regardless of whether the boxes are specified on the drawings.Conduit shall be installed with a minimum of bending and cutting. Conduits not dimensioned as to location shall be installed approximately where shown with limited adjustment.

3.7.2 Changes in Direction of Run

Changes in direction of runs shall be made with symmetrical bends or cast-metal fittings. Field-made bends and offsets shall be made with an approved hickey or conduit-bending machine. Crushed or deformed raceways shall not be installed. Trapped raceways in damp and wet locations shall be avoided where possible. Lodgment of plaster, dirt, or trash in raceways, boxes, fittings and equipment shall be prevented during the course of construction. Clogged raceways shall be cleared of obstructions or shall be replaced.

3.7.3 Exposed Conduit

Exposed conduit shall be installed to avoid interference with other work.

Structural steel shall not be cut, drilled or bent to avoid interference except with written approval. Exposed conduit shall be installed to conform to the shape of the surface over which it is run and shall be installed parallel or perpendicular to walls, structural members, or intersections of vertical planes and ceilings. Supports shall be used at entrance or exit from all conduit fittings, boxes, cabinets and changes of direction of conduit. Bolts, pipe straps and all other supporting hardware for exposed conduit shall be hot dip galvanized after fabrication.

3.7.4 Conduit Cleaning

All new and existing conduit that will be reused shall be cleaned by the contractor before pulling wire. The contractor shall clean all the conduit by pulling a clean, dry, tight fitting rag through each conduit run.

3.7.5 Conduit Inspection

After a conduit system is installed and cleaned, it shall be given a visual inspection and a mandrel shall be drawn through the conduit in the presence of the Contracting Officer. Should the mandrel fail to pass through the conduit, a new bend or length of conduit shall be installed at the points of obstruction.

3.7.6 Supports

Conduit shall be rigidly attached with approved supports and anchors to the surface over which it is run to prevent vertical and horizontal movement.

The maximum spacing of supports for the exposed conduit shall be at intervals of not more than ten (10) feet and within three(3) feet of boxes, cabinets, and fittings, with approved pipe straps, wall brackets, conduit clamps, conduit hangers, threaded C-clamps, beam clamps, or ceiling trapeze. Supports for exposed conduit on concrete surfaces shall be fastened securely to the concrete with approved anchors. Wooden, fibrous, or similar plugs inserted into the concrete will not be accepted. Concrete anchors shall be as per SECTION 13 48 00.00 26. Cutting the main reinforcing bars in reinforced concrete beams or joists shall be acceptable when drilling holes for support anchors. Holes drilled for support anchors, but not used, shall be filled.

3.7.7 Expansion Fittings

Expansion fittings shall be installed at all crossings of concrete expansion joints and where necessary to compensate for thermal expansion greater than 1/4" on a straight run. Expansion fittings shall have a bonding jumper connecting the conduits together.

3.7.8 Grounding of Conduit System

The entire metallic conduit system installed by the Contractor shall be electrically continuous and bonding jumpers shall be used across all expansion fittings and between conduits entering and leaving electrical utility vaults, panelboards, and cabinets. No welding or brazing of the grounding conductor to the conduit shall be allowed. Insulated ground bushings shall be used to bond metallic conduits. Conduits terminating at cabinets and panelboards shall be grounded at the equipment by grounding bushings connected to the grounding system by a No. 8 wire, or as approved. Conduit runs shall be grounded at both ends.

3.7.9 Coordination

The conduit shall be installed in the most direct and workmanlike manner so that interference between piping, ducts, conduit, mechanical, electrical, and structural features will be avoided. In case interference does develop, the Contracting Officer will decide which work shall be relocated regardless of which work was first installed. The rerouting shall be made without additional cost to the Government. The Contractor shall carefully examine previously installed work prior to developing layout and installation plans for conduit and accessories to determine that installation can be made without interference with other work.

3.7.10 Cutting and Threading

All cuts shall be made with a hacksaw or a cutter-type tool approved for this use. All cuts shall be square and the conduit opening shall not be constricted. After cutting and threading, conduit ends shall be reamed to remove burrs, and the entire conduit shall be thoroughly cleaned to remove all cuttings, dirt and oil from its interior. Threads shall be clean-cut.

No running threads will be permitted. Conduit unions shall be used where standard couplings cannot be used. All conduit joints shall be wrench tight. No threadless fittings shall be used on conduit runs.

3.7.11 Thread Compound

Conduit joints and connections shall be made conductive, watertight and rustproof by the application of a blend of colloidal copper and rust inhibitors. Each threaded joint shall be thoroughly cleaned to remove all cutting oil before the compound is applied.

3.7.12 Bends

Bends in conduit runs shall have a radius of not less than 10 times the diameter nominal size. All bends shall be free from cracks and indentations.

3.7.13 Termination at Sheet Metal Boxes

Unless conduit hubs are provided, conduit shall be securely fastened to sheet metal boxes and cabinets with a locknut on both inside and outside and terminated with an insulated ground bushing. The conduit shall be of such length that when a bushing is screwed tight against the end of the conduit, no appreciable space will be left between bushing and locknut.

The locknuts shall be tightened against the box without deforming the box.

3.7.14 Termination at Cast Boxes

Conduits terminating in cast boxes shall be made up in approved threaded hubs or bosses unless otherwise indicated. Conduit shall be corked or plugged with rags or similar packing material before the concrete is poured. Cast boxes and enclosures with threaded hubs shall be provided with proper size hubs to fit conduit being installed. Threaded reducers will not be permitted.

3.8 BOXES AND ENCLOSURES

All boxes shall be straight and true with horizontal or vertical structural lines. The final installation shall not be out of plumb more than 1/4-inch over the full length nor be deformed more than 1/16-inch per linear foot nor more than a total of 1/4-inch in any surface. All boxes and cabinets shall be cleaned of debris, concrete, and grout after the forms are removed and boxes with gasketed covers shall be closed immediately. Gaskets for gasketed boxes shall be treated with graphite or other approved paste at the time the cover is assembled to the box to prevent it from sticking.

Cabinet trims shall be aligned and adjusted to the building wall. Blank covers shall be installed on boxes where devices are not indicated. Open knockouts shall not be permitted. Exposed enclosures on concrete surfaces shall be fastened with anchors near each corner. Enclosures with threaded hubs shall be provided with proper size hubs to fit conduit being installed. Threaded reducers will not be permitted. Concrete anchors shall be as per SECTION 13 48 00.00 26. Cutting the main reinforcing bars in reinforced concrete beams or joists shall be acceptable when drilling holes for anchors. Clamp-backs shall be used for mounting to concrete.

3.9 GROUNDING

Ground connections to the existing grounding system shown on the drawings shall be made complete to all equipment installed under this contract whether or not specifically shown or detailed on the drawings. Where required to make conduits and other metallic runs electrically continuous, approved copper jumpers or bonding shall be used.

3.10 EXISTING EQUIPMENT

Any paint damaged during modifications to existing equipment shall be repaired, by degreasing, sanding, feather-edging, priming, and finishing with an approved paint of matching color. Tiny nicks and other similar damage may, if approved, be repaired with matching finish color alone.

3.11 DISPOSAL OF REMOVED EQUIPMENT

All removed equipment which is not reutilized or specifically addressed in the contract drawings or specifications as being delivered to the government, shall become the property of the contractor.

3.12 DELIVERY, STORAGE, AND HANDLING

Equipment shall be packaged for shipment to and for the convenience of handling and storage at Lookout Point Dam and Powerhouse.

a. The equipment shall be shipped as completely assembled as feasible so as to require a minimum of installation work.

b. Each shipping package shall be provided with removable lifting channels with eye bolts for attachment of crane slings to facilitate lifting and handling.

c. Finished painted surfaces and metal work shall be wrapped suitably or otherwise adequately protected from damage during shipment.

d. Parts shall be prepared for shipment so that slings for handling may be attached readily while the parts are in the railway car or truck.

e. Equipment crated for shipment shall be of such size, including crates, that will pass through an existing hatch opening.

f. The Contractor shall investigate and verify openings and routing through which equipment and packaging must pass at the storage and installation sites.

g. Equipment shipping container sizes and proposed routing shall be submitted to the Contracting Officer for approval.

h. The shipment shall be transported and handled as packaged by the manufacturer.

i. Crating and other packing shall not be removed until the equipment is adjacent to and ready to be mounted in its permanent location.

j. Equipment Crate Size, Storage Location, and Proposed Routing at Site shall be be submitted for approval.

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