36C24219B0008-0001003.pdf

REPAIR/REPLACE ROOF

Project No. 528A4-14-202

VA WNY Health Care System

Batavia VA Medical Center

222 Richmond Ave.

Batavia, New York 14020 03-07-17

26 05 33 - 1

SECTION 26 05 33

RACEWAYS

PART 1 - GENERAL

1.1 WORK INCLUDED

A. Provide all labor, materials, tools, and equipment required for the complete installation of work called for in the Contract Documents

1.2 DESCRIPTION OF WORK

A. This section includes minimum requirements for the following:

1. Rigid Non-Metallic Conduit

2. Fittings and Conduit Bodies

3. Expansion Fittings

1.3 QUALITY ASSURANCE

A. All raceways shall be installed in a neat and workmanlike manner. All methods of construction that are not specifically described or indicated in the contract documents shall be subject to the control and approval of the Owner's Representative. Equipment and materials shall be of the quality and manufacture indicated. The equipment specified is based upon the acceptable manufacturers listed.. Where

"approved equal" is stated, equipment shall be equivalent in every way to that of the equipment specified and subject to approval.

B. Materials specified herein shall comply with the applicable requirements of:

1. The following Articles of the National Electric Code (NFPA 70)

a. Wiring Methods

b. Rigid nonmetallic conduit

2. The following National Electrical Manufacturers Association

(NEMA) Standards:

a. NEMA, TC 3 PVC fittings for use with Rigid PVC Conduit and tubing.

b. NEMA, TC 6 & TC 8 PVC Plastic Utilities for Underground

Installation.

3. The following American National Standards Institute (ANSI) standards:

a. ANSI-C80.1 Electric Rigid Steel Conduit

b. ANSI-C80.3 Specification for Electrical Metallic Tubing, Steel

VA WNY Health Care System

Batavia VA Medical Center

222 Richmond Ave.

26 05 33 - 2

4. The following U.L. Standards:

a. UL 651 Schedule 40, 80, Type EB and A Rigid PVC

Conduit and Fittings

1.4 SUBMITTALS

A. Provide product data for the following:

1. none

B. Provide coordination drawings indicating locations of cable tray, underfloor raceways, and large feeder conduit runs as called for in

260010.

C. Provide factory drawings detailing surface raceway and underfloor raceway installations.

PART 2 - PRODUCTS

2.1 CONDUIT

A. Rigid Non-Metallic PVC Conduit

1. Extra-Heavy wall conduit: Schedule 80, constructed of polyvinyl chloride, rated for use with 90-degree C conductors, and UL listed for direct burial and normal above ground use.

2. Heavy wall conduit: Schedule 40, constructed of polyvinyl chloride, rated for use with 90-degree C conductors, and UL listed for direct burial and normal above ground use.

3. Acceptable manufacturers:

a. Carlon

b. Thomas & Betts

c. Certainteed

d. Condux

B. Fittings

1. Rigid galvanized steel fittings shall be fully threaded and shall be of the same material as the respective raceway system.

2. Fittings for electrical metallic tubing shall be single screw indenter fittings for conduits up to 2" and double screw indenter fittings for conduits 2" and larger.

3. Fittings for flexible metal conduit shall be center stopped, insulated throat, U.L. E-11852 listed.

4. Fittings for liquidtight flexible metal conduit shall have zinc plated steel ferrule, compression type with sealing ring.

5. Fittings for rigid non-metallic conduit shall be solvent cemented in accordance with the manufacturer's instructions.

VA WNY Health Care System

Batavia VA Medical Center

222 Richmond Ave.

26 05 33 - 3

6. Fittings for PVC coated rigid galvanized steel conduit shall be threaded, hot dipped galvanized, and coated inside and outside with a urethane coating.

7. Fittings for electrical metallic tubing shall be interlocking compression type zinc coated steel in dry locations, fittings in damp locations shall have internal sealing ring and knockout gasket.

8. Connectors shall have insulated throat up to and including 1" size. For sizes 1-1/4" and larger, provide plastic insulating bushing.

9. Die-cast or pressure cast fittings are not permitted.

10. Provide conduit bodies types, shapes and sizes as required to suit application and NEC requirements. Provide matching gasketed covers secured with corrosion-resistant screws.

11. Acceptable manufacturers:

a. O.Z. Gedney

b. Steel City

c. Thomas & Betts

d. Crouse-Hinds

e. Carlon

C. Expansion Fittings

1. Galvanized steel expansion joints for RGS or EMT conduit, PVC for

PVC conduit.

2. Minimum 4” movement in either direction.

3. Weatherproof for outdoor applications.

4. Design Make: O.Z./Gedney, Type "AX" (exposed), “DX” (Concrete

Pour)

5. Acceptable manufacturers:

a. O.Z./Gedney

b. Crouse-Hinds

c. Appleton

PART 3 - EXECUTION

3.1 GENERAL

A. Size raceways as indicated on the drawings. Where sizes are not indicated, raceways shall be sized as required by the National

Electrical Code in accordance with the quantity, size, type and insulation of conductors to be installed.

B. Minimum 3/4" trade size for branch circuit and fire alarm wiring.

C. Support raceways from building structure and wall construction. Do not support raceways from ceiling systems ductwork, piping, or equipment hangers. Do not support raceways from pre-existing conduit runs, banks, racks, hangers, etc.

VA WNY Health Care System

Batavia VA Medical Center

222 Richmond Ave.

26 05 33 - 4

D. Support outlet, pull, and junction boxes independently from building structure and wall construction. Do not support from raceways.

E. Install raceways parallel or perpendicular to building walls, floors and ceilings.

F. Coordinate all raceway runs with other trades.

G. Provide expansion fittings with external grounding straps at building expansion joints.

H. Core drill, sleeve, and fire stop all penetrations through existing floors.

I. Support all raceways with malleable iron pipe clamps or other approved method. In exterior or wet locations, provide minimum ¼” air space between raceway and wall. Secure raceway within 3 ft. of each outlet box, junction box, cabinet or fitting.

J. Provide conduit seals and explosion proof devices as indicated on the plans and as dictated by the National Electrical Code for all hazardous locations indicated on the drawings.

3.2 CONDUIT

A. Install with a minimum of bends and offsets. Bends shall not kink or destroying the interior cross section of the raceway. Factory made bends shall be used for raceways 1" trade size and larger.

B. Provide at least one junction or pullbox for each 360 degrees of bends.

C. Plug the ends of each roughed-in raceway with an approved cap or disc to prevent the entrance of foreign materials during construction.

D. Provide U.L. approved rain-tight and concrete-tight couplings and connectors.

E. Secure within three feet of each outlet box, junction box, cabinet or fitting.

F. Provide a #14 AWG fish wire in all "Spare" or "Empty" conduit runs to facilitate future installation of conductors.

G. Install raceways in concrete floor slabs as follows:

1. All conduit in concrete floor slabs shall be rigid galvanized steel with concrete tight threaded fittings.

VA WNY Health Care System

Batavia VA Medical Center

222 Richmond Ave.

26 05 33 - 5

2. Provide expansion fittings where conduits cross building expansion joints.

3. Install conduit below the reinforcing mesh.

4. Locate conduits to provide a minimum of 1” of concrete around conduit.

5. Obtain approval from the Owner's Representative prior to installing conduit larger than 1" trade size in concrete slabs.

H. Wherever a cluster of four (4) or more conduits rise out of floor exposed, provide neatly formed 4 in. high concrete envelope, with chamfered edges, around raceways.

I. Provide conduit supports based on the following table:

Conduit Horizontal Vertical

Trade Type Spacing in Spacing in

Size of Run Feet Feet

½” , 3/4" Concealed 7 10

1”,, 1-1/4" Concealed 8 10

1-1/2” & larger Concealed 10 10

½”, 3/4" Exposed 5 7

1”, 1-1/4" Exposed 7 8

1-1/2” & larger Exposed 10 10

J. Where conduits puncture roof, install pitch pockets as required in order that the roof warranty is maintained.

K. Provide 4 spare 3/4-in. raceways from each flush mounted panelboard or cabinet to an area above the nearest accessible ceiling space. Make

90o turn above the ceiling, arranged for further continuation of raceway, and cap.

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