SECTION 16111

CONDUIT

PART 1 GENERAL

SECTION INCLUDES

Metal conduit.

Flexible metal conduit.

Liquidtight flexible metal conduit.

Electrical metallic tubing.

Nonmetal conduit.

Electrical nonmetallic tubing.

Flexible nonmetallic conduit.

Fittings and conduit bodies.

RELATED SECTIONS

Section 07270 - Fire Stopping.

Section 07[___] - [___________________]: Roofing penetrations.

Section 16118 - Underground Duct Bank.

Section 16130 - Boxes.

Section 16170 - Grounding and Bonding.

Section 16190 - Supporting Devices.

Section 16195 - Electrical Identification.

REFERENCES

ANSI C80.1 - Rigid Steel Conduit, Zinc Coated.

ANSI C80.3 - Electrical Metallic Tubing, Zinc Coated.

ANSI C80.5 - Rigid Aluminum Conduit.

ANSI/NEMA FB 1 - Fittings, Cast Metal Boxes, and Conduit Bodies for Conduit and Cable Assemblies.

ANSI/NFPA 70 - National Electrical Code.

NECA "Standard of Installation."

NEMA RN 1 - Polyvinyl Chloride (PVC) Externally Coated Galvanized Rigid Steel Conduit and Intermediate Metal Conduit.

NEMA TC 2 - Electrical Plastic Tubing (EPT) and Conduit (EPC-40 and EPC-80).

NEMA TC 3 - PVC Fittings for Use with Rigid PVC Conduit and Tubing.

DESIGN REQUIREMENTS

Conduit Size: ANSI/NFPA 70.

SUBMITTALS

Submit under provisions of Section [01300] [_____].

Product Data: Provide for [metallic conduit] [, flexible metal conduit] [, liquidtight flexible metal conduit] [, metallic tubing] [, nonmetallic conduit] [, flexible nonmetallic conduit] [, nonmetallic tubing] [, fittings] [, conduit bodies] [and] [_______________________].

PROJECT RECORD DOCUMENTS

Submit under provisions of Section [01700] [_____].

Accurately record actual routing of conduits larger than [2] [__] inches ([51] [__] mm).

REGULATORY REQUIREMENTS

Conform to requirements of ANSI/NFPA 70.

Furnish products listed and classified by [Underwriters Laboratories, Inc.] [testing firm acceptable to authority having jurisdiction] as suitable for purpose specified and shown.

FIELD SAMPLES

Provide under provisions of Section [01400] [_____].

Provide field sample of [conduit] [__________________], [two] [___] each at [2] [__] feet ([610] [___] mm) long.

Provide field sample of [expansion/deflection fitting] [__________________], [two] [___] each.

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect, and handle Products to site under provisions of Section [01600] [_____].

Accept conduit on site. Inspect for damage.

Protect conduit from corrosion and entrance of debris by storing above grade. Provide appropriate covering.

Protect PVC conduit from sunlight.

PROJECT CONDITIONS

Verify that field measurements are as shown on Drawings.

Verify routing and termination locations of conduit prior to rough-in.

Conduit routing is shown on Drawings in approximate locations unless dimensioned. Route as required to complete wiring system.

PART 2 PRODUCTS

CONDUIT REQUIREMENTS

Minimum Size: [1/2] [3/4] inch ([13] [19] mm) unless otherwise specified.

Underground Installations:

More than [Five] [____] Feet from Foundation Wall: Use [rigid steel conduit] [,intermediate metal conduit] [, plastic coated conduit] [, thickwall nonmetallic conduit] [and] [thinwall nonmetallic conduit].

Within [Five] [____] Feet from Foundation Wall: Use [rigid steel conduit] [,intermediate metal conduit] [, plastic coated conduit] [, thickwall nonmetallic conduit] [and] [thinwall nonmetallic conduit].

In or Under Slab on Grade: Use [rigid steel conduit] [,intermediate metal conduit] [, plastic coated conduit] [, thickwall nonmetallic conduit] [and] [thinwall nonmetallic conduit].

Minimum Size: [3/4] [1] inch ([19] [25] mm).

Outdoor Locations, Above Grade: Use [rigid [steel] [and] [aluminum] conduit] [, intermediate metal conduit] [and] [electrical metallic tubing].

In Slab Above Grade:

Use [rigid steel conduit] [, intermediate metal conduit] [, electrical metallic tubing] [and] [thickwall nonmetallic conduit].

Maximum Size Conduit in Slab: [3/4] [1/2] [____] inch ([19] [13] [___] mm); [1/2] [____] inch ([13] [___] mm) for conduits crossing each other.

Wet and Damp Locations: Use [rigid [steel] [and] [aluminum] conduit] [, intermediate metal conduit] [, electrical metallic tubing] [, thickwall nonmetallic conduit] [and] [, nonmetallic tubing].

Dry Locations:

Concealed: Use [rigid [steel] [and] [aluminum] conduit] [, intermediate metal conduit] [, electrical metallic tubing] [, thickwall nonmetallic conduit] [and] [nonmetallic tubing].

Exposed:	Use [rigid [steel] [and] [aluminum] conduit] [, intermediate metal conduit] [, electrical metallic tubing] [and] [thickwall nonmetallic conduit].

METAL CONDUIT

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600] [___].

Rigid Steel Conduit: ANSI C80.1.

Rigid Aluminum Conduit: ANSI C80.5.

Intermediate Metal Conduit (IMC): Rigid steel.

Fittings and Conduit Bodies:	ANSI/NEMA FB 1; [material to match conduit.] [aluminum fittings may be used with steel conduit.] [all steel fittings.]

PVC COATED METAL CONDUIT

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600] [___].

Description:	NEMA RN 1; rigid steel conduit with external PVC coating, [20] [40] mil ([0.05] [0.1] mm) thick.

Fittings and Conduit Bodies:	ANSI/NEMA FB 1; steel fittings with external PVC coating to match conduit.

FLEXIBLE METAL CONDUIT

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600] [___].

Description: Interlocked [steel] [aluminum] construction.

Fittings: ANSI/NEMA FB 1.

LIQUIDTIGHT FLEXIBLE METAL CONDUIT

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600] [___].

Description:	Interlocked [steel] [aluminum] construction with PVC jacket.

Fittings: ANSI/NEMA FB 1.

ELECTRICAL METALLIC TUBING (EMT)

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600] [___].

Description: ANSI C80.3; galvanized tubing.

Fittings and Conduit Bodies:	ANSI/NEMA FB 1; steel [or malleable iron], [compression] [set screw] [indenter] type.

NONMETALLIC CONDUIT

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600] [___].

Description: NEMA TC 2; Schedule [40] [80] PVC.

Fittings and Conduit Bodies: NEMA TC 3.

NONMETALLIC TUBING

Manufacturers:

[________________________________].

[________________________________].

[________________________________].

Substitutions: Under provisions of Section [01600]

[___].

Description: NEMA TC 2.

Fittings and Conduit Bodies: NEMA TC 3.

PART 3 EXECUTION

INSTALLATION

Install conduit in accordance with NECA "Standard of Installation."

Install nonmetallic conduit in accordance with manufacturer's instructions.

Arrange supports to prevent misalignment during wiring installation.

Support conduit using coated steel or malleable iron straps, lay-in adjustable hangers, clevis hangers, and split hangers.

Group related conduits; support using conduit rack. Construct rack using steel channel [; provide space on each for 25 percent additional conduits].

Fasten conduit supports to building structure and surfaces under provisions of Section 16190.

Do not support conduit with wire or perforated pipe straps. Remove wire used for temporary supports

Do not attach conduit to ceiling support wires.

Arrange conduit to maintain headroom and present neat appearance.

Route [exposed] conduit parallel and perpendicular to walls.

Route conduit installed above accessible ceilings parallel and perpendicular to walls.

Route conduit in and under slab from point-to-point.

Do not cross conduits in slab.

Maintain adequate clearance between conduit and piping.

Maintain 12 inch (300 mm) clearance between conduit and surfaces with temperatures exceeding 104 degrees F (40 degrees C).

Cut conduit square using saw or pipecutter; de-burr cut ends.

Bring conduit to shoulder of fittings; fasten securely.

Join nonmetallic conduit using cement as recommended by manufacturer. Wipe nonmetallic conduit dry and clean before joining. Apply full even coat of cement to entire area inserted in fitting. Allow joint to cure for 20 minutes, minimum.

Use conduit hubs [or sealing locknuts] to fasten conduit [to sheet metal boxes in damp and wet locations] [and] [to cast boxes].

Install no more than equivalent of three 90-degree bends between boxes. Use conduit bodies to make sharp changes in direction, as around beams. Use [hydraulic one-shot bender to fabricate] [factory elbows for] bends in metal conduit larger than 2 inch (50 mm) size.

Avoid moisture traps; provide junction box with drain fitting at low points in conduit system.

Provide suitable fittings to accommodate expansion and deflection where conduit crosses [seismic] [, control] [and] expansion joints.

Provide suitable pull string in each empty conduit except sleeves and nipples.

Use suitable caps to protect installed conduit against entrance of dirt and moisture.

Ground and bond conduit under provisions of Section 16170.

Identify conduit under provisions of Section 16195.

INTERFACE WITH OTHER PRODUCTS

Install conduit to preserve fire resistance rating of partitions and other elements, using materials and methods under the provisions of Section 07270.

Route conduit through roof openings for piping and ductwork or through suitable roof jack with pitch pocket. Coordinate location with roofing installation specified under Section 07[___].

END OF SECTION