DIVISION 16 - ELECTRICAL
SECTION 16110 – RACEWAYS
Raceways 16110-1
Version1– April 26,2011
1. GENERAL
1.01 WORK INCLUDES
1. Contractor Provides:
a. Raceways shown on electrical drawings or specified, including that required for branch circuit power, data, telephone, fiber optic, and other systems shown or
specified. Power raceways to connecting point for all equipment provided.
1.02 DESCRIPTION OF WORK
A. The extent of Electrical Work will be shown on the Contract Drawings and/or as specified herein.
B. The type of Electrical Work required for this Section includes the following:
1. Rigid heavy wall galvanized steel conduit (RGSC).
2. Intermediate metal conduit (IMC).
3. Electrical metallic tubing (EMT).
4. Liquidtight flexible metal conduit (LTFMC).
5. Flexible metallic tubing (FMT).
6. Flexible metal conduit (FMC).
7. Surface metal raceway.
8. Raceway fittings and accessories.
C. Except where indicated otherwise in the Contract Documents, the term “Conduit” includes all of the following:
1. Rigid heavy wall galvanized steel conduit (RGSC).
2. RGSC with PVC coating.
3. Intermediate metal conduit (IMC).
4. Electrical metallic tubing (EMT).
5. Liquidtight flexible metal conduit (LTFMC).
6. Flexible metallic tubing (FMT).
7. Flexible metal conduit (FMC).
D. The term “raceway” as used in the Contract Documents shall be considered as defined in the International Electrical Code 2000.
2. PRODUCTS
2.01 RIGID HEAVYWALL GALVANIZED STEEL CONDUIT (RGSC)
A. Rigid heavy wall galvanized steel conduit shall be hot-dip galvanized, standard weight, rigid mild steel with threaded connections as manufactured by Allied, Western Tube, Wheatland, LTV or approved equivalent. Fittings shall be threaded, iron alloy, as manufactured by Appleton, Thomas & Betts, O-Z/Gedney or approved equivalent.
B. Conduit shall conform to Underwriters Laboratories Inc. Standard UL-6.
2.02 INTERMEDIATE METAL CONDUIT (IMC)
A. Intermediate metal conduit shall be hot-dip galvanized or electrogalvanized, uniform
thickness, mild steel with threaded connections as manufactured by Allied, Western Tube or Wheatland or approved equivalent. . Fittings shall be O-Z/Gedney, Appleton or Crouse- Hinds or approved equivalent.
B. Conduit shall conform to Underwriters Laboratories Inc. Standard UL-1242.
2.03 ELECTRICAL METALLIC TUBING (EMT)
A. Electrical metallic tubing shall be zinc coated, enamel lined, threadless steel tubing, UL labeled as manufactured by Allied, Wheatland or LTV approved equivalent. Fittings shall be compression-type as manufactured by Thomas & Betts, Appleton, Efcor , Killark or approved equivalent.
B. Conduit shall conform to Underwriters Laboratories Inc. Standard UL-797.
2.04 LIQUIDTIGHT FLEXIBLE METAL CONDUIT (LTFMC)
A. Liquidtight flexible metal conduit shall be UL listed, for wet and oily locations, -40°F rated, flexible metal conduit with PVC outer jacket and integral grounding conductor, as
manufactured by Electri-Flex Co. “ZHLA,” or equal by Alflex or Anamet, Inc or approved
equivalent.
B. All runs of flexible conduit to motors shall be as short as practicable, of the same size as the conduit it extends and with enough slack to reduce the effects of vibration to a minimum.
C. Where the fittings are brought into an enclosure with a knock-out, a gasket assembly
consisting of an "O" ring and retainer shall be installed on the outside. Fittings shall be
insulated throat type, Thomas & Betts, Appleton, O-Z/Gedney or approved equivalent.
D. Flexible conduit run shall not be more than 3 feet.
E. LTFMC will be installed when connecting between raceway mounted on a wall to raceway mounted to desk. Each LTFMC connector will be connected to a transition raceway piece. The raceway mounted on the wall will use “T” raceway piece with a transition piece to allow LTFMC between the wall raceway and the desk transition piece.
2.05 FLEXIBLE METALLIC TUBING (FMT)
A. Flexible metallic tubing and all fittings shall comply with International Electrical Code Article XVI requirements.
B. FMT shall be used for flexible raceways for wiring required in ceiling spaces used as
plenums for return air.
C. FMT shall be Electri-Flex "Plen-Flex" or equivalent as manufactured by Anaconda or Alflex.
D. All outlet boxes and fittings shall be of approved types.
E. FMT will not be used between raceway and desks.
2.06 FLEXIBLE METAL CONDUIT (FMC)
A. Flexible metal conduit shall be single strip, helically wound, galvanized steel with smooth interior surface as manufactured by Plen-Flex, Anamet, Alflex Corp., Electri-Flex Co. or approved equivalent, and shall conform to UL Standard #1.
B. Flexible conduit shall be installed in such a manner that liquids tend to run off the surfaces and not drain toward the fittings. It shall not be used for motor connections.
C. All runs of flexible conduit shall be as short as practicable, of the same size as the conduit it extends and with enough slack to reduce the effects of expansion and vibration to a minimum.
D. FMC shall be used for connections to light fixtures and equipment in non-plenum spaces. Minimum size ½ inch may be used in lengths not to exceed 6'-0".
E. Connectors shall be malleable iron or steel with insulated throat, squeeze-type, with annular gripping rib. Particular attention shall be given to maintaining ground bond and firm support through flexible connections. Connections shall have insulated throats. Fittings shall be as manufactured by Thomas & Betts, Appleton, O-Z/Gedney or approved equivalent.
F. FMC will not be used between raceway and desks.
2.07 SURFACE METAL RACEWAY SYSTEM
A. Provide a surface metal (steel) divided raceway system to be used for branch circuit and data network voice, video and other low-voltage wiring. The surface metal raceway system shall consist of steel divided or dividable raceway base, dividers (separators, where necessary), blank cover, appropriate fittings with 2” radius fiber optic bends and device mounting plates necessary to complete the installation.
B. Surface metal raceway may be used in dry interior locations only as permitted in International Electrical Code 2000 Article 352 Part A and NEC 352 Part A. 4000 surface metal raceway and fittings are listed by Underwriters’ Laboratories under File Number E4376, Listing and Classification Guide Number RJBT and File Number E41751, Listing and Classification Number RJPR respectively. All in accordance with publication UL5 for Surface Metal Raceways. Surface metal raceway and fittings shall be listed by Underwriters Laboratories Inc.
NOTE: MOST RACEWAY SYSTEMS AND FITTINGS ARE NOT INTERCHANGEABLE
WITH AND BETWEEN MANUFACTURERS AND MAY VIOLATE UL LISTING AND
MANUFACTURERS WARANTEES. CHECK WITH UL AND RACEWAY
MANUFACTURERS FOR DETAILS.
C. Submit drawings for review and approval showing the complete layout of all products that make up the complete systems for each room and area prior to installation with raceway lengths, device type (power and/or data), locations and circuits identified.
D. If variations from reviewed shop drawings are required during the installation of the system, final as built drawings shall be submitted for each room and area that has been altered.
E. The surface metal raceways required for this installation shall be of steel two-piece design with a metal base and snap on metal cover. Construction. Base shall be a minimum of 0.040”[1mm] wall thickness. Assembled base and cover shall be 4.750”[12mm] wide by 1.750”[45mm] high with a cross sectional area of 7.50 square inches [484mm squared]. Base shall be dividable by means of a barrier section into two equal compartments. NOTE: A cutting tool shall be available for the base and cover to insure clean and square cuts. Raceways and components shall be as manufactured by The Wiremold Company or approved equal by the Architect/Engineer and Office of Technology Services. The finish color shall be ivory or gray as selected by the Principal of the school, Architect/Engineer of Record, and/or as determined by pre existing.
F. The raceway and all the system components must be UL Listed. Steel shall be galvanized. The finish color shall be either gray or ivory Scuffcoat (a polyester topcoat over ivory base) and shall be suitable for field repainting to match surroundings.
G. The raceway shall be of a two-piece design with a metal base and snap-on metal cover. Base shall be a minimum of 0.050”[1.3mm] wall thickness and cover shall be a minimum of 0.040”[1mm] wall thickness. Assembled base and cover shall be 4.750”[12mm] wide by 1.750”[45mm] high with a cross section area of 7.50 square inches [484mm squared] Base shall be divided into two equal compartments. A cutting tool shall be available and used for the base and cover to ensure clean, square cuts.
H. A complete line of full capacity corner elbows and tee fittings must be available to
maintain a controlled 2” [51mm] cable bend radius which meets the specifications for
Fiber Optic and Category 5E cabling and exceeds the ANSI/TIA/EIA-568-B, ANSI/TIA/EIA-568-B.1, and ANSI/TIA/EIA-569-A requirements for communications
pathways. Fittings available shall include, but not limited to flat, internal and external
elbows, couplings for joining raceway sections, wire clips, blank end fitting and a full
compliment of device mounting brackets and plates.
I. A series of inserts shall also be available for retrofit applications that provide a controlled 2” [51mm] cable bend radius which meets the specification for Fiber optic and category 5E cabling and exceeds the ANSI/TIA/EIA –568-A, ANSI/TIA/EIA-568-B.1, and
ANSI/TIA/EIA-569-A requirements for communications pathways. Fittings shall be colored to match the raceway
J. Metal Device brackets and trim plates shall be available to install single or two gang devices either horizontal or vertical within the raceway. Trim plates shall overlap cover eliminating seam. Devices for both power and data/communication shall have the capability of mounting flush or in conjunction with faceplates. Device brackets and plates shall be colored to match the raceway. Or plastic device mounting bracket and trim plate shall be available to install devices horizontally. Trim plate shall overlap cover- liminating seam. Faceplates shall be available to accept a variety of power and data/communications devices. Plastic must be compatible with UL 94 for Plastic Materials.
K. Raceway manufacturer shall provide a complete line of connectivity outlets and modular inserts for UTP (including Category 5E, STP (150 ohm), Fiber Optic, Coaxial, and other cabling types with faceplates and bezels to facilitate mounting.
L. The raceway manufacturer shall have available cutting tools for base and covers to make clean cuts for installation.
M. MOST RACEWAY SYSTEMS ARE NOT INTERCHANGEABLE AND MAY
VIOLATE UL LISTING AND MANUFACTURERS WARANTEES. CHECK WITH
UL AND MANUFACTURERS FOR FURTHER DETAILS.
N. Raceway installed for the purpose of both or either electrical and/or data cabling (as indicated in PRDOE Infrastructure Standards CAD drawings) is considered a dual channel raceway system. Each channel is the responsibility of the trade (Communications/Electrical) installing the proper cabling/wire per channel regardless of which trade installed the base raceway.
O. The base shall be dividable by means of a barrier section into two equal compartments. If the base is not separated, and has been install under a separate Contract, it is the responsibility of the Contractor to verify existing conditions of raceway prior to bid. Refer: (Section 01010-1 Work Covered by Contract Documents 1.02. B.) Contractor will install dividers without disruption or damage to data cables or electrical wire (depending on the existing condition).
P. PRDOE Guidelines and PRDOE Standards both provide CAD Drawings showing separation between data/voice/mmtv and electrical devices in (G4000 or equal). PRDOE Standards requires Certified installation by product manufacture and/or data cable Company. Dual channel raceway provides for moves, adds, and changes by a certified installer maintaining the fifteen (15) year warranties.
Q. Communication and Electrical Contractors installation of Data, Voice, MMTV, CCTV, and electrical wiring are required to comply with Federal, State, and Local codes. Installations by the Contractors are required to be installed in a professional manner by Code. In the event that the dual channel raceway is installed with cable or wires not maintaining the proper channel (as shown in PRDOE CAD Drawings) PRDOE Office of Technology Service and OMEP will request for the proper method of correction at the expense of the Contractor.
R. If cabling or electrical wiring is damage by Contactor while installing under a separate contract and corrections between the Communications and Electrical Contractors, OMEP and Office of Technology Service will determine which Contractor is at fault. Damages will be repaired at the Contractors expense.
S. Raceway wire clips will be placed minimum of every 2’ 6” (two clips minimum per raceway sections with lengths 4’ and longer) to support data cable and electrical wire.
T. Raceway shall be mounted flush on all surfaces, except on floors where uni-strut is installed. If the raceway needs to saddle over obstructions then the proper raceway fitting must be obtained from the raceway manufacture. Field modification of raceway will not be accepted due to voiding UL testing and certification.
2.08 SPECIAL PROVISIONS FOR HARDWIRED ADMINISTRATIVE WORKSTATION
AND WIRELESS HYBRID DATA COMMUNICATIONS (SECTION 17221).
A. Wireless hybrid installations for power and data/communications distribution from MDF/IDF and/or Concentrator Enclosures to Wireless Access Points (not to exceed 90 meters) the following raceway will be installed. Raceway shall be a two-piece design with a base divided into two compartments of 1/3 and 2/3 the width of raceway base and snap on cover. Total width shall be 1.90” x 0.88” [48mm x 22mm] deep with a cross sectional area of 0.374 square inches [241mm] for the 1/3 compartment and 0.866 square inches [559mm] for the 2/3 compartment. The base and cover shall be a minimum thickness of 0.040” [1mm]. The raceway base shall be available in 10’ lengths and the cover shall be available in 5’ lengths. The raceway and accessories shall be V2400BD manufactured by The Wiremold Company or approved equal by the Architect/Engineer or the Office of Technology Services.
B. A full complement of Fiber Optic bend radius fittings must be available. Fittings shall include, but not be limited to, couplings, flat internal and external elbows, tee fittings, entrance end fittings, blank ends, cover clips, and wire clips, with a minimum radius bend of 2” for Fiber Optic and Category 5E cabling which meet the specification requirements for ANSI/TIA/EIA-568-B, ANSI/TIA/EIA-568-B.1, and ANSI/TIA/EIA- 569-A.
C. Device boxes shall be available to mount standard devices and connectivity inserts with faceplates in single and two gang configurations. Device bases shall be available for the over-the-raceway mounting feature with twist-outs that allow for access into either raceway compartment. The boxes shall be available in 2