HomeMy WebLinkAbout260530 - CONDUITS.pdfMatt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 1 of 14
March 23, 2012
Section 260530
Conduits
PART 1 � GENERAL
1.01 SUMMARY
A. This section includes:
1. Conduit
2. Tubing
3. Fitting and Conduit bodies
4. Sleeves
1.02 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 01 Specification Sections, apply to this Section.
B. Division 03 – Concrete.
C. Division 07 – Fire Stopping.
D. Division 07 – Joint Sealer.
E. Division 07 – Roofing.
F. Section 26 05 00 � Basic Electrical Requirements.
G. Section 26 05 26 � Grounding and Bonding.
H. Section 26 05 19 – Metal Clad Cables � Type MC – 600 Volts and Less.
I. Section 26 05 29 – Hangers and Supports for Electrical Systems.
J. Section 26 27 13 – Electricity Metering and Incoming Electrical Service.
1.03 DEFINITIONS
A. EMT: Electrical metallic tubing.
B. ENT: Electrical nonmetallic tubing.
C. FMC: Flexible metal conduit.
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Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 2 of 14
March 23, 2012
D. IMC: Intermediate metal conduit.
E. LFMC: Liquidtight flexible metal conduit.
F. LFNC: Liquidtight flexible nonmetallic conduit.
G. PVC�RGS: PVC coated Type RGS conduit.
H. RGS: Rigid Galvanized Steel conduit.
I. RNC: Rigid nonmetallic conduit.
1.04 REFERENCES
A. Review the Drawings and all sections of the Specifications for equipment furnished by
other Contractors and the Owner throughout the entire project.
B. See references noted in Specification Section 26 05 00, Paragraph 1.03.
C. ANSI C80.1�2005 – Electrical Rigid Steel conduit, Zinc Coated (ERSC).
D. ANSI C80.3 – 2005 – Steel Electric Metallic Tubing, Zinc Coated (EMT).
E. ANSI C80.6�2005 – Electrical Intermediate Metal Conduit (EIMC).
F. ANSI/NEMA FB 1 – Cast Metal Boxes and Conduit Bodies for conduit, Electrical
Metallic Tubing (EMT) and Cable Assemblies.
G. NECA 101�2001 – Installing Steel Conduit (Rigid, IMC, EMT).
H. NECA 102 – 2004 – Standard For Installing Aluminum Rigid Metal Conduit.
I. NECA TC 2 – 2003 � Electric Polyvinyl Chloride (PVC) Tubing and Conduit (EPC�40
and EPC�80).
J. NEMA TC 3 – 2004 – Electrical Polyvinyl (PVC) Fittings For Use With Rigid PVC
Conduit.
K. UL 1242 – Electrical Intermediate Metallic Conduit (IMC).
L. ASTM D1308 � Standard Test Method for Effect of Household Chemicals on Clear and
Pigmented Organic Finishes.
M. ASTM D3359 � Standard Test Methods for Measuring Adhesion by Tape Test.
1.05 SYSTEM DESCRIPTION
A. Conduit for work under Divisions 26, 27 and 28.
1. Refer to specific sections for requirements under those sections.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 3 of 14
March 23, 2012
1.06 SUBMITTALS
A. Submit shop Drawings and Product Data under provisions of Division 01 and Section
26 05 00.
B. Source quality�control test reports.
1.07 QUALITY ASSURANCE
A. Regulatory Requirements:.
1. Conform to requirements of NFPA 70.
B. Certifications.
1. Furnish products listed and classified by UL as suitable for purposes specified
and shown.
1.08 DELIVERY, STORAGE AND HANDLING
A. Deliver, Store and handle materials in accordance with Section 26 05 00.
B. Protect conduit from corrosion and entrance of debris by storing above grade. Provide
appropriate covering.
1.09 PROJECT CONDITIONS
A. Install all wire and cable in conduit, unless specifically indicated otherwise.
B. Verify that field measurements are as shown on Drawings.
C. Verify routing and termination locations of conduit prior to rough�in.
D. Conduit routing shown on drawings is in approximate location unless otherwise
dimensioned. Route as required to complete wiring system.
1.10 SEQUENCING AND SCHEDULING
A. Sequence and Schedule work in accordance with Division 01 and Section 26 05 00.
1.11 WARRANTY
A. Warranty in Accordance with requirements of Division 01 and Section 26 05 00.
PART 2 � PRODUCTS
2.01 ACCEPTABLE MANUFACTURERS
A. Metal Conduit and fittings:
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 4 of 14
March 23, 2012
1. Metal Conduit Manufacturers: Subject to compliance with requirements, provide
products by one of the following
a. Allied Tube and Conduit Corp.
b. Maverick Tube Corporation.
c. Republic Steel.
d. Triangle PWC, Inc.
2. Metal Conduit Fittings Manufacturers: Subject to compliance with requirements,
provide products by one of the following:
a. Appleton Electric Company.
b. Crouse Hinds.
c. Midwest Electric.
d. O�Z/Gedney.
e. Raco, Inc.
f. Steel City/American Electric.
g. Thomas and Betts
B. Flexible Metal Conduit, Liquidtight Metal Conduit and Fittings:
1. Flexible Metal Conduit Manufacturers: Subject to compliance with
requirements, provide products by one of the following:
a. AFC Cable Systems.
b. Allied Tube and Conduit Corp.
c. Anacoda American Brass Company.
d. Electri�Flex Company.
e. General Cable.
f. Triangle PWC, Inc.
2. Liquidtight Flexible Metal Conduit Manufacturers: Subject to compliance with
requirements, provide products by one of the following:
a. AFC Cable Systems.
b. Allied Tube and Conduit Corp.
c. Anacoda American Brass Company.
d. Electri�Flex Company.
3. Flexible Metal Conduit Fittings Manufacturers: Subject to compliance with
requirements, provide products by one of the following:
a. AFC Cable Systems.
b. Allied Tube and Conduit Corp.
c. Hubbell, Inc.
d. Midwest Electric.
e. O�Z/ Gedney.
f. Raco, Inc.
g. Thomas and Betts.
h. Steel city/American Electric.
C. Non�Metallic Conduit and Fittings:
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 5 of 14
March 23, 2012
1. Non�Metallic Conduit and Fittings Manufacturers: Subject to compliance with
requirements, provide products by one of the following:
a. Can Tex.
b. Carlon.
c. A Lamson & Sessions Company.
d. Certainteed Corp..
e. Integral Corp.
2.02 METAL CONDUIT AND FITTINGS �� MATERIALS
A. Rigid Metal Conduit (RMC): Hot�dipped galvanized steel, with galvanized threads,
conforming to ANSI C80.1�2005 for electrical rigid steel conduit (ERSC).
B. Intermediate Metal Conduit (IMC): Hot dipped galvanized steel tubing with galvanized
threads, conforming to ANSI C80.6�2005 and UL 1242 for electrical intermediate metal
conduit (EIMC).
C. Electrical Metallic Tubing (EMT): Hot dipped galvanized steel tubing conforming to
ANSI C80.3�2005 for steel electrical metallic tubing (EMT).
D. Metal Fittings:
1. Electrical Rigid Steel Conduit (ERSC) and Intermediate Metal Conduit (IMC):
Galvanized steel, threaded type conforming to NEMA FB�1.
2. Electrical Metallic Tubing (EMT):
a. Galvanized steel, compression or set screw type conforming to NEMA
FB�1.
b. Indentor and friction type fittings are not permitted.
c. Die cast type fittings are not permitted.
2.03 METAL CONDUIT AND FITTINGS – MATERIAL SELECTION
A. Minimum Conduit Size:
1. The minimum conduit size use on this project shall be 3/4 inch diameter unless
specifically noted otherwise.
2. Conduit shall be sized on basis of utilizing the THW wire.
B. Electrical Rigid Steel Conduit (RMC):
1. Use electrical rigid steel conduit (ERSC) with threaded type couplings for all
conduit installations unless otherwise indicated.
2. Utilize rigid metal conduit (ERSC) conduit and rigid steel conduit (RMC) elbows
for all concrete slab penetrations.
C. Intermediate Metal Conduit (IMC): IMC may be used wherever rigid metal conduit is
approved, except where conduit is to be encased in concrete.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 6 of 14
March 23, 2012
D. Electrical Metallic Tubing (EMT):
1. Uses Permitted:
a. Indoors above the ground floor slab when concealed in within walls.
b. Indoors exposed where installed higher than 8’�0” above finished floors,
and in ceiling spaces.
c. In tunnels or crawl spaces when fastened to underside of floor above.
2. Uses Not Permitted:
a. Uses not permitted by the Electrical Code and other applicable codes.
b. Outdoors, exterior locations.
c. In tunnels and crawl spaces.>
d. In pool areas and pool equipment rooms.>
e. When installed exposed and lower than 8’�0” above finish floors.
f. Conduits larger than 2�1/2 inches in trade size.
2.04 FLEXIBLE METAL CONDUIT AND FITTINGS
A. Flexible Metal Conduit (FMC): Interlocked galvanized steel or aluminum construction.
B. Liquidtight Flexible Metal Conduit: (LFMC): Interlocked galvanized steel or aluminum
construction with PVC jacket.
C. Fittings: NEMA FB�1: Compression type, UL listed for grounding.
D. Use flexible metal conduit in dry locations for connections to transformers, lighting
fixtures, and other equipment requiring adjustment or subject to vibration, except motors.
E. Use liquidtight flexible metal conduit for all connections to motors, kitchen equipment,
and laundry equipment..
F. Use liquidtight flexible metal conduit in damp and wet locations for connections to
lighting fixtures, and other equipment requiring adjustment or subject to vibration.
G. Minimum size of conduit shall be 1/2 inch diameter, except 3/8 inch diameter may be
used for lighting fixture and control wiring connections.
H. Maximum length of conduit shall be 6 feet.
I. Type MC Cable:
1. Type MC (metal�clad) cable, with appropriately size neutrals, may be utilized in
existing walls. This method may only be utilized vertically between a junction
box located in the ceiling space within 1 foot of the wall and the new device
outlet box.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 7 of 14
March 23, 2012
2. Refer to Section 26 05 20 for other MC cable uses permitted under Base Bid
under an Alternate Bid on this project.>
2.05 NON�METALLIC CONDUIT AND FITTINGS
A. Conduit: NEMA TC 2, Schedule 40 heavy wall rigid PVC.
B. Non Metallic Conduit (PVC)
1. Uses Permitted:
a. In below grade installations.
b. Where specifically indicated on drawings.
2. Uses Not Permitted:
a. Uses not permitted by the Electrical Code and other applicable codes.
b. Concrete slab penetrations. Utilize rigid metal conduit (RMC) conduit
and rigid metal conduit (RMC) elbows for concrete slab penetrations
3. Use threaded PVC adapters or fittings for connection between PVC and rigid
metal conduit (RMC) conduit.
2.06 SLEEVES THROUGH WALLS AND FLOORS
A. Iron Pipe Size (IPS) steel pipe or rigid metal conduit unless otherwise indicated.
2.07 FABRICATION
A. Metal Conduit and Fittings:
1. Electrical Rigid Steel Conduit (ERSC): ANSI C80.1; hot�dipped, galvanized
steel with galvanized threads.
2. Intermediate Metal Conduit (IMC): UL 1242; hot dipped galvanized steel tubing
with galvanized threads.
3. Electrical Metallic Tubing (EMT): ANSI C80.3; galvanized steel tubing.
4. Metal Fittings::
a. Electrical Rigid Steel Conduit (ERSC) and Intermediate Metal Conduit
(IMC): NEMA FB�1, galvanized steel, threaded type.
B. Flexible Metal Conduit and Fittings:
1. Flexible Metal Conduit: Interlocked galvanized steel or aluminum construction.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 8 of 14
March 23, 2012
2. Liquidtight Flexible Metal Conduit: Interlocked galvanized steel or aluminum
construction with PVC jacket.
3. Fittings: NEMA FB�1. Compression type, UL listed for grounding.
C. Non�Metallic Conduit and Fittings:
1. Conduit: NEMA TC 2, Schedule 40 heavy wall rigid PVC:
2. Fittings: NEMA TC 3.
PART 3 � EXECUTION
3.01 PREPARATION
A. Sleeves:
1. Provide sleeves for conduits and other electrical items passing through the
following:
a. Structural building walls.
b. Structural floors.
c. Structural ceilings and roofs
2. Do not install sleeves through structural members of work, except as detailed on
Drawings, or as reviewed and approved by Architect/Engineer.
3. Sleeves are not required for penetrations through non�structural walls, floors and
ceilings.
4. Install sleeves accurately centered on conduits and other electrical items passing
through the sleeves.
5. Size sleeves so that conduits and other electrical items passing through the
sleeves will have free movement in the sleeves.
6. Length of sleeve shall be equal to thickness of construction penetrated, and
finished flush to surface, except floor sleeves. Floor sleeves finish heights shall
be as follows :
a. Extend floor sleeves 1/4 inch above level floor finishes.
b. Extend floor sleeves 3/4 inch above floor finishes sloped to drain unless
otherwise noted.
c. Extend floor sleeves a minimum of 3�1/2 inches above floor finish in
mechanical rooms, fan rooms, other room where mechanical or plumbing
equipment is served by water piping.
7. Provide temporary support of sleeves during placement of concrete and other
work around sleeves, and provide temporary closure to prevent concrete and
other materials from entering sleeves.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 9 of 14
March 23, 2012
8. Do not install sleeves through suspended ceilings.
9. Sleeve Cavity Fill:
a. Concrete Walls: Fill cavity around outside of sleeves passing through
concrete walls with concrete under the provisions of Section 03 30 00..
b. Concrete Masonry Unit Walls: Fill cavity around outside of sleeves
passing through concrete masonry unit walls with grout under the
provisions of Section 04 20 00.
c. Concrete Floors:
10. Sleeve Sealant:
a. Where sleeves pass through fire�rated construction, seal open area within
the sleeves with barrier penetration seal that meets the requirements
specified in Section 07 84 00.
b. Caulk non�fire rated sleeves with sealant that meets the requirements
specified in Section 07 90 00.
3.02 INSTALLATION
A. Install conduit in accordance with the National Electrical Code, NECA standard of
Installation, and manufacturer's instructions.
B. Provide insulated bushings on the end of all conduit stubs unless otherwise indicated.
C. Conduits for switchboards feeders, panelboards feeders, transformer feeders, and
generator feeders may be installed either underground or above the finished floor.
D. Install conduits for all branch circuit wiring within building perimeter above the building
finished floor line, except under the following conditions:
1. Conduits serving floor outlets installed in slabs on grade shall be installed below
the slab.
2. Conduits serving outlets in walls that are not full height and located on slabs on
grade shall be installed below the slab.
E. Concealed Installation:
1. Install all conduits concealed in all areas unless otherwise indicated. Concealed
installations include conduits installed above ceilings, within walls, and below
floors.
2. Existing Construction:
a. In existing finished areas where new conduit cannot be installed
concealed within existing walls due to wall construction, Type MC cable
or flexible conduit may be used and fished within walls. This method
may only be utilized vertically between a junction box located in the
ceiling space within 1 foot of the wall and the new device outlet box.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 10 of 14
March 23, 2012
Properly support all Type MC cable and flexible conduit outside of
walls.
b. If the walls cannot be fished, utilize ivory colored metalplastic surface
raceway as manufactured by Hubbell, Panduit, or Wiremold. as specified
in Section 26 05 33. Obtain permission of Architect for use and routing
of all surface raceway in finished areas.>
F. Exposed Installation: Conduit may be installed exposed only under the following
conditions:
1. Locations above 10 feet in rooms with exposed ceiling construction
2. Unfinished mechanical rooms, unfinished dedicated electrical rooms, and boiler
rooms. A space shall be considered unfinished where there are no finished
ceilings, walls, or floors.
3. Other spaces specifically designated by the Architect.
G. Do not install conduit in concrete slabs.
H. Do not route conduits in elevator shafts except those required for the elevator power and
communications.
I. Bends and Elbows:
1. Utilize long radius bends or elbows for conduits containing coaxial cable or wire
smaller than 14 AWG.
2. Utilize rigid metal conduit (RMC) elbows for all underground conduit
transitions.
J. Underground Conduit Within Building Perimeter:
1. When located below floor slabs, install conduit at the bottom of the drainage fill.
2. When located in interior grass areas such as courtyards, install conduit a
minimum of 30 inches below finished floor or finished grade.
3. Conduits not encased in concrete shall be encompassed in 6 inches of sand fill.
4. Refer to Section 26 05 44 for additional requirements.
K. Maximum Run Lengths:
1. Interior Above Grade: The maximum length of straight conduit runs without
bend shall not exceed 300 feet between pull boxes or pull locations. Deduct
50 feet from the maximum length for each 90�degree bend. Calculate reduction
of length for all other bend angles utilizing the same reduction ratio. Do not
exceed four 90 degrees bends or a total of 360 degrees of bends per run.
Matt the Miller’s
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L’Acquis Number: 12056
Section 260530 Conduits Page 11 of 14
March 23, 2012
2. Interior and Exterior Below Grade: The maximum length of straight conduit runs
without bend shall not exceed 800 feet between pull boxes or pull locations.
Deduct 100 feet from the maximum length for each 90�degree bend. Calculate
reduction of length for all other bend angles utilizing the same reduction ratio.
Do not exceed four 90 degrees bends or a total of 360 degrees of bends per run.
L. Do not install damaged conduit.
M. Plug ends of conduit to prevent entry of dirt or moisture. Clean out conduit before
installation of conductor.
N. Cut conduit ends square. Ream all cut conduit and tubing to remove all burrs. Insert
conduit and tubing to shoulder of fittings. Securely tighten fittings to assure an effective
and continuous path to ground through the conduit system..
O. Install UL approved expansion fittings complete with bonding jumpers where conduits
cross building expansion joints or drainage fill.
P. To prevent moisture traps, provide junction box at low points in conduit system. Where
underground conduit enters the building in below grade areas, provide junction box on
the inside wall at the point of conduit entry.
Q. For penetrations through non�rated walls and floors, caulk the space between the sleeve
and conduits, and/or wall and conduits and other electrical items passing through sleeves
with non�staining, waterproof gun grade compound to prevent the flow of moisture
through the walls and floors. Apply caulking compound by the gun method using
nozzles of proper size to fit the void to be filled. Prepare the area for caulking by packing
it tightly with a resilient foam or rope yarn. Refer to Section 07 90 00.
R. Route conduit through roof openings for piping and ductwork or through roofing by
method approved by roofing manufacturer. Coordinate location with roofing installation.
S. Conduit Support:
1. Conduit shall be rigidly supported from the building structure and securely
fastened in place. The supporting means shall provide vertical support of the
weight of the equipment and prevent horizontal movement or sway.
2. Support conduit using coated steel or malleable iron straps, single�bolt steel
hangers, adjustable hangers, clevis hangers, split hangers, and beam clamps.
3. Support suspended conduits from galvanized threaded steel rods. Thread rods
size shall be a minimum of 1/4 inch diameter.
4. Do not support conduit with drop wires, tie wires, or perforated pipe straps.
5. Do not support conduit with aircraft style hangers, such as Gripple hangers,
unless specifically indicated in the Contract Documents.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 12 of 14
March 23, 2012
6. Do not attach conduit to or support conduit from ceiling support wires.
7. Remove wire used for temporary supports.
8. Arrange supports to prevent misalignment during wiring installation.
9. Fasten conduit supports to building structure and surfaces under provisions of
Section 26 05 29.
10. Group related conduits. Support such conduit groupings using steel channel
rack. Secure conduits to racks with U�bolts or strip clips and conduit clamps.
Support racks with minimum 1/4 inch diameter rods.
11. See Section 26 05 29 for additional requirements.
T. Provide suitable pull string in each empty conduit except sleeves and nipples. Use
polypropylene or monofilament plastic line with not less than 200�lb tensile strength.
Leave at least 12 inches of slack at each end of pull wire
U. Seal conduit at each end where conduits leave heated areas and enter unheated areas,
where air may flow continuously in conduits, or where conduit is installed with possible
access for rodents.
V. Provide green grounding conductor for entire length of each installation of non�metallic
conduit or of flexible conduit, except control wiring connections, to maintain grounding
continuity between equipment and conduit system.
W. Comply with NECA 1 for installation requirements applicable to products specified in
Part 2 except where requirements on Drawings or in this Article are stricter.
X. Keep raceways at least 6 inches away from parallel runs of flues and steam or hot�water
pipes. Install horizontal raceway runs above water and steam piping.
Y. Complete raceway installation before starting conductor installation.
Z. Arrange stub�ups so curved portions of bends are not visible above the finished slab.
AA. Threaded Conduit Joints, Exposed to Wet, Damp, Corrosive, or Outdoor Conditions:
Apply listed compound to threads of raceway and fittings before making up joints.
Follow compound manufacturer's written instructions.
BB. Raceway Terminations at Locations Subject to Moisture or Vibration: Use insulating
bushings to protect conductors, including conductors smaller than No. 4 AWG.
CC. Raceways for Communications Cable: Install raceways, metallic and nonmetallic, rigid
and flexible, as follows:
1. 1 1/4�Inch Trade Size and Smaller: Install raceways in maximum lengths of 50
feet.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 13 of 14
March 23, 2012
2. 1 1/2 Inch Trade Size and Larger: Install raceways in maximum lengths of 150’.
3. Install with a maximum of two 90�degree bends or equivalent for each length of
raceway unless Drawings show stricter requirements. Separate lengths with pull
or junction boxes or terminations at distribution frames or cabinets where
necessary to comply with these requirements.
DD. Expansion�Joint Fittings for RNC: Install in each run of aboveground conduit that is
located where environmental temperature change may exceed 30 deg F and that has
straight�run length that exceeds 25 feet .
1. Install expansion�joint fittings for each of the following locations, and provide
type and quantity of fittings that accommodate temperature change listed for
location:
a. Outdoor Locations Not Exposed to Direct Sunlight: 125 deg F
temperature change.
b. Indoor Spaces: Connected with the Outdoors without Physical
Separation: 125 deg F temperature change.
c. Attics: 135 deg F temperature change.
2. Install fitting(s) that provide expansion and contraction for at least 0.00041 inch
per foot of length of straight run per deg F of temperature change.
3. Install each expansion�joint fitting with position, mounting, and piston setting
selected according to manufacturer's written instructions for conditions at
specific location at the time of installation.
EE. Flexible Conduit Connections: Use maximum of 72 inches of LFMC for recessed and
semi�recessed lighting fixtures, equipment subject to vibration, noise transmission, or
movement; and for transformers and motors.
3.03 CONSTRUCTION
A. Fire Barrier Penetration Seals::
1. Penetration of fire barriers to be sealed under Section 07 84 00.
B. Conduit Within Masonry:
1. Coordinate installation of conduit in masonry work.
2. Do not install conduit horizontally in masonry walls.
3. Conduits penetrating masonry walls shall not interrupt the vertical masonry wall
reinforcing. Coordinate the location of reinforcement with Division 4.
4. Wherever multiple conduits pass through masonry walls, provide a minimum of
4 inches between adjacent penetrations.
Matt the Miller’s
Carmel, IN
L’Acquis Number: 12056
Section 260530 Conduits Page 14 of 14
March 23, 2012
5. Where ever more than two conduits 2 inches or larger are to pass through a
masonry wall in the same location or where conduits of any size in a row equals a
length of 3 feet or greater, prior approval from Architect shall be required before
disturbing the wall.
C. Arrange conduit to present a neat appearance.
D. Arrange conduit to maintain headroom. In open spaces, conduits shall generally be
installed as high as possible.
E. Route conduits installed above ground floor slab parallel or perpendicular to building
lines. Conduits installed below ground floor slab may be routed from point to point.
F. Route conduit to avoid structural, mechanical, and plumbing obstructions, minimizing
crossovers.
G. Allow minimum of 1 foot clearance at flues, steam pipes, and other heat sources.
H. Do not route conduits below the floor beneath boilers or within 12 inches of concrete
pads for boilers.
3.04 CLEANING
A. Prior to pulling any wire or cable into below grade conduits, swab conduits clean and free
of water.
B. Vacuum dirt and debris; do not use compressed air to assist in cleaning.
3.05 PROTECTION
A. Provide final protection and maintain conditions that ensure coatings, finishes, and
cabinets are without damage or deterioration at time of Substantial Completion.
1. Repair damage to galvanized finishes with zinc�rich paint recommended by
manufacturer.
END OF SECTION 260530