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contemplated in paragraph 6.11.A is found to be defective, CONTRACTOR shall promptly, without cost to OWNER and
in accordance with OWNER's written instructions: (i) repair such defective land or areas, or (ii) correct such defective
Work or, if the defective Work has been rejected by OWNER, remove it from the Project and replace it with Work that
is not defective, and (ili) satisfactorily correct or repair or remove and replace any damage to other Work, to the work
of others or other land or areas resulting there from. If CONTRACTOR does not promptly comply with the terms of
such instructions, or in an emergency where delay would cause serious risk of loss or damage, OWNER may have the
defective Work corrected or repaired or may have the rejected Work removed and replaced, and all Claims, costs,
losses, and damages (including but not limited to all fees and charges of ENGINEERs, architects, attorneys, and other
professionals and all court or arbitration or other dispute resolution costs) arising out of or relating to such correction
or repair or such removal and replacement (including but not limited to all costs of repair or replacement work of
others) will be paid by CONTRACTOR.

B. In special circumstances where a particular item of equipment is placed in continuous service before Substantial
Completion of all the Work, the correction period for that item may start to run from an earlier date if so provided in
the Specifications or by Written Amendment.

C. Where defective Work (and damage to other Work resulting there from) has been corrected or removed and
replaced under this paragraph 13.07, the correction period hereunder with respect to such Work will be extended for
an additional period of one year after such correction or removal and replacement has been satisfactorily completed.

D. CONTRACTOR's obligations under this paragraph 13.07 are in addition to any other obligation or warranty. The
provisions of this paragraph 13.07 shall not be construed as a substitute for or a waiver of the provisions of any
applicable statute of limitation or repose.

13.08 Acceptance of Defective Work

A. If, instead of requiring correction or removal and replacement of defective Work, OWNER (and, prior to ENGINEER's
recommendation of final payment, ENGINEER) prefers to accept it, OWNER may do so, CONTRACTOR shall pay all
Claims, costs, losses, and damages (including but not limited to all fees and charges of ENGINEERs, architects,
attorneys, and other professionals and all court or arbitration or other dispute resolution costs) attributable to
OWNER's evaluation of and determination to accept such defective Work (such costs to be approved by ENGINEER as
to reasonableness) and the diminished value of the Work to the extent not otherwise paid by CONTRACTOR pursuant
to this sentence. If any such acceptance occurs prior to ENGINEER's recommendation of final payment, a Change
Order will be issued incorporating the necessary revisions in the Contract Price, reflecting the diminished value of
Work so accepted. If the parties are unable to agree as to the amount thereof, OWNER may make a Claim therefore as
provided in paragraph 10.05. If the acceptance occurs after such recommendation, an appropriate amount will be
paid by CONTRACTOR to OWNER.

13.09 OWNER May Correct Defective Work

A. If CONTRACTOR fails within a reasonable time after written notice from ENGINEER to correct defective Work or to
remove and replace rejected Work as required by ENGINEER in accordance with paragraph 13.06.A, or if CONTRACTOR
fails to perform the Work in accordance with the Contract Documents, or if CONTRACTOR fails to comply with any
other provision of the Contract Documents, OWNER may, after seven days written notice to CONTRACTOR, correct and
remedy any such deficiency.

B. In exercising the rights and remedies under this paragraph, OWNER shall proceed expeditiously. In connection with
such corrective and remedial action, OWNER may exclude CONTRACTOR from all or part of the Site, take possession of
all or part of the Work and suspend CONTRACTOR's services related thereto, take possession of CONTRACTOR's tools,
appliances, construction equipment and machinery at the Site, and incorporate in the Work all materials and
equipment stored at the Site or for which OWNER has paid CONTRACTOR but which are stored elsewhere.
CONTRACTOR shall allow OWNER, OWNER's representatives, agents and employees, OWNER's other contractors, and

GC - 46 of 55

Project Number: 228730
Issue Date: August 2017

WWTE SCADA Upgrades
Nashua, NH

Covers shall have captive screws and be accessible after the Work
has been completed.

3. Rigid Aluminum Conduit

a.

RAC, including couplings, elbows, bends, and nipples, shall
conform to the requirements of UL 6 and ANSI C80:5.

Fittings for rigid aluminum conduit shall be threaded and shall
conform to NEMA FB 1. Fittings shall be galvanized by the hot
dip process, unless manufacturer dictates aluminum for specific
application.

Gaskets shall be solid for fittings sized 1-1/2 inches and less.
Conduit fittings with blank covers shall have gaskets except in
clean, dry areas or at the lowest point of a conduit run where
drainage is required.

Covers shall have captive screws and be accessible after the work
has been completed.

4. PVC-Coated Rigid Metal Conduit

a.

Rigid galvanized metal conduit coated with 40 mils thick
polyvinylchloride coating.

Fittings, elbows, supporting devices and accessories shall include
factory applied 20 mils thick polyvinylchloride coating and be
manufactured by the same as that of the conduit.

Use tools as recommended by the manufacturer so as not to
damage PVC coating. Where coating is damaged, touch-up with
PVC paint in the field after installation.

5. Rigid Plastic Conduit

a.

PVC Schedule 40: Conduit shall be made of polyvinyl chloride
compound that shall be homogeneous plastic material free from
cracks, holes or foreign inclusions. Conduit shall be rated for use
with 90 degree C conductors, UL Listed. Use solvent cement to
join conduits as manufactured the same as the conduit
manufacturer.

PVC Schedule 80: Heavy wall PVC conduit that shall be made of
polyvinyl chloride compound that shall be homogeneous plastic
material free from cracks, holes or foreign inclusions. Conduit
shall be rated for use with 90 degree C conductors, UL Listed. Use
solvent cement to join conduits as manufactured the same as the
conduit manufacturer.

6. Flexible Metallic Conduit

WOODARD & CURRAN

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26 05 34-3

Project Number: 228730
Issue Date: August 2017

WWTE SCADA Upgrades
Nashua, NH

Flexible metallic (FM) conduit shall meet the requirements of UL1.

Liquidtight flexible metallic conduit shall be provided with a
protective jacket of PVC extruded over a flexible interlocked
galvanized steel core to protect wiring against moisture, oil,
chemicals, and corrosive fumes.

Fittings for flexible metallic conduit shall meet the requirements of
UL 514B, Type I box connector, electrical, Type II coupling,
electrical conduit, flexible steel, or Type IV adapter, electrical
conduit.

7. Wireways

a.

Wireways and auxiliary gutters for use in exposed, dry locations
shall be a prefabricated channel-shaped sheet metal trough with
hinged or removable covers, associated fittings, and supports for
housing, and protecting electrical wires and cables in accordance
with UL 870.

Straight sections of trough, elbows, tees, crosses, closing plates,
connectors, and hanging brackets shall be constructed from sheet
steel of commercial quality not less than 16-gage. Sheet metal
component parts shall be cleaned, phosphatized, and coated with a
corrosion-resistant gray paint.

Straight sections of wireways and auxiliary gutters shall be solid or
have knockouts as indicated in both sides and bottom, 3 inches on
center.

Straight sections shall be not more than 5-feet long, with covers
held closed with screws.

8. Conduit Seals

WOODARD & CURRAN

Provide factory fabricated watertight conduit sealing bushing
assemblies suitable for sealing around conduit, or tubing passing
through concrete floors and walls. Provide a cast in place water
stop wall sleeve with a mechanical pipe seal between the conduit
and the sleeve. Construct seals with steel sleeve, malleable iron
body, neoprene sealing grommets or rings, metal pressure rings,
pressure clamps, and cap screws.

Provide E.Y-S. seal fittings with appropriate potting material where
conduits enter or leave a Class 1, Division 1 or 2 environments or a
Class 2, Division | or 2 environment.

RACEWAYS, BOXES AND SUPPORTING DEVICES
26 05 34-4

Project Number: 228730

WWTE SCADA Upgrades

Issue Date: August 2017 Nashua, NH
2.02 SUPPORTING DEVICES
A. Supports, support hardware, and fasteners shall be protected with zinc coating or

with treatment of equivalent corrosion resistance using approved alternative
treatment, finish, or inherent material characteristic. Products for use outdoors
shall be hot dip galvanized unless material is inherently corrosion resistant.

B. Refer to Table 2.02A for approved supporting device installation guidelines.

1. Conduit Supports

a.

Single run hangers: Galvanized steel conduit straps or clamps, or
cast metal beam clamps. Perforated straps and spring steel clips
and clamps will not be permitted.

Group run hangers: Minimum 12-gauge galvanized performed U-
channel rack with conduit fittings; 25 percent spare capacity.

Hanger rods: Threaded steel, 3/8-inch diameter, or as identified on
the Drawings.

Vertical run supports: Minimum 12-gauge galvanized performed
U-channel struts with conduit fittings.

2. Equipment and Lighting Supports

a. U-channel: 12-gauge galvanized performed U-channel struts with
fixture and conduit fittings, as applicable, unless indicated
otherwise on the Drawings.

3. Corrosive Area Supports

a. Clamp Hangers, Pipe Straps, and Clamp Back Spacers for use with
PVC-coated rigid metal conduit shall have 40mil gray PVC
exterior coating.

b. Clamp Hangers, Pipe Straps, etc. for use with PVC nonmetallic
conduit shall be of nonmetallic PVC material.

C. Hanger Rods: 20mil gray PVC exterior coated rod with threaded
ends only 3/8” and 1/2” sizes as required.

d. Strut Support: 20mil gray PVC exterior coating strut. Standard

WOODARD & CURRAN

channel, slotted channel, and back to back channel are acceptable.

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Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

e. Provide Stainless steel hangers, rods and supports in lieu of PVC
coated when indicated in the Supporting Devices Table below.

TABLE 2.02A — Supporting Devices

Location/Equipment Acceptable Support Type

Exterior Galvanized Steel U-Channel

2.03 BOXES AND FITTINGS

A. Boxes must have sufficient volume to accommodate the number of conductors
entering the box in accordance with the requirements of NFPA 70 and UL 514A.

B. In general, boxes that are exposed to weather, process areas, normally wet
locations, and locations exposed in mechanical spaces shall be cast-metal. Boxes
in all other finished areas shall be sheet metal. Boxes installed in corrosive areas,
such as the chemical feed room, shall be nonmetallic.

C. Refer to Table 2.03A for approved enclosure types.

1. Sheet Metal Outlet Boxes

a. Sheet Metal Outlet Boxes: Standard type galvanized steel,
minimum four inch square or octagon by 1-1/2 inch deep.

b. Luminaire and Equipment Supporting boxes: Rated for weight of
equipment supported; include 2 inch male fixture studs where
required.

C. Single Wall Type: Minimum size, four inch square by 1-1/2 inch or

2-1/8 inch deep, except as noted. Provide dry wall device covers
raised 3/4 inch minimum to insure flush finish mounting.

d. Ganged Wall Type: Minimum depth three inches except as noted,
ganged as required under common plate to contain devices shown.
On 277 volt circuits ganged boxes for switches shall contain only
one circuit or equip box with permanent barriers per NEC Art 404-
8.

2. Cast Outlet Boxes

Type FS shallow and type FD deep, cast ferroalloy.

b. Provide number of threaded hubs as required.
C. Use in all exterior, damp and locations exposed in mechanical
spaces.

RACEWAYS, BOXES AND SUPPORTING DEVICES
WOODARD & CURRAN 26 05 34-6

Project Number: 228730
Issue Date: August 2017

WWTE SCADA Upgrades
Nashua, NH

d. Provide gasketed cover and accessories by box manufacturer for
complete weatherproofing. Provide correct box to accept
weatherproof covers as specified.

3. Sheet Metal Pull & Junction Boxes

a. Sheet metal boxes shall be standard type galvanized steel and must
conform to UL 50.

b. Box dimensions shall be minimum four inch square or octagon by
2/1/2 inch deep.

C. Sizes up to 12x12x6 inch: Provide screw-type or hinged covers.

d. Sizes greater than 12x12x6 inch: Provide hinged covers.

e. Boxes shall be sized to accommodate all incoming raceways.

4. Nonmetallic Outlet, Device, and Wiring Boxes

a. Conform to NEMA OS 2, "Nonmetallic Outlet Boxes, Device
Boxes, Covers, and box Supports," and UL 514C, "Nonmetallic
Outlet Boxes, Flush Device Boxes and Covers." Boxes shall be
molded polyvinyl chloride (PVC), or fiberglass units of type,
shape, size, and depth to suit location and application.

b. Boxes shall be equipped with threaded screw holes for device and

WOODARD & CURRAN

cover plate mounting. Each box shall have a molded cover of
matching material suitable for the application and location
installed.

RACEWAYS, BOXES AND SUPPORTING DEVICES
26 05 34-7

Project Number: 228730
Issue Date: August 2017

WWTE SCADA Upgrades
Nashua, NH

TABLE 2.03A — Electrical Enclosure Types

Location/Equipment Acceptable Enclosure Type
Exterior (unclassified) NEMA 4X
NEMA 7 (Explosion Proof)
Class 1 Division 1, Division 2 Locations NEMA 4X for Intrinsically Safe
Equipment

PART 3 —- EXECUTION

3.01 CONDUIT

A. Uses Permitted

1.

Use liquid tight flexible metal conduit for the final 24 inches of
connections to motors or control items subject to movement or vibration.

Use RGS for all exterior aboveground installations unless otherwise noted.

Use PVC coated rigid steel conduit, or as scheduled below, for installation
in corrosive areas, and other areas as identified on the Contract Drawings.

Use Schedule 80 PVC conduit for all underground installations. The
transition from underground and from sand-encasement to riser shall be
PVC coated rigid steel conduit to a minimum of 12” above finished grade
elevation. All elbows shall be prefabricated Rigid Steel to prevent wire
burn through. Reference specification 26 05 43 “Underground Ducts and
Raceways for Electrical Systems” for further requirements.

Install conduit seals for conduit penetrations of slabs on grade and exterior
walls below grade and where indicated. Tighten sleeve seal screws until
sealing grommets have expanded to form watertight seal. Provide seals
for the interior of conduits that penetrate exterior or water bearing walls,
consisting of gland type sealing bushings or RTV closed cell silicone
foam. Refer to Table 3.01A below for approved conduit types:

TABLE 3.01A — Conduit Types

Location/Equipment Approved Conduit Type

Exterior Rigid Galvanized Steel

B. Power,
and all

lighting, control, emergency light and power, and special-service systems
related components shall be installed in accordance with NFPA 70, and

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WOODARD & CURRAN 26 05 34-8

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

shall be enclosed in separate conduit or separate conduit systems as indicated on
the Contract Drawings and as specified herein.

C. Any run of conduit between outlet and outlet, between fitting and fitting, or
between outlet and fitting shall contain not more than the equivalent of three 90-
degree bends, including those bends located immediately at the outlet or fitting.
Field bends shall be made in accordance with the manufacturer's
recommendations, which normally require use of a one-size-larger bender than
would be required for uncoated conduit. Installed conduit and fittings shall be
free of dirt and trash and shall not be deformed or crushed. Empty conduit shall
have a pull rope stalled.

D. Conduit shall be installed with a minimum of 3 inches of free air space separation
from mechanical piping..

E. Install exposed conduits, parallel or perpendicular to walls, ceilings, or structural
members. Do not run through structural members. Avoid horizontal runs within
partitions or sidewalls. Avoid ceiling inserts, lights, or ventilation ducts or outlets.
Do not run conduits across pipe shafts or ventilation duct openings and keep
conduits a minimum of 6 inches from parallel runs of flues, hot water pipes, or
other sources of heat. Wherever possible, install horizontal raceway runs above
water and steam piping.

F. Do not run conduits exposed on the exterior surface of buildings. Conduits
penetrating exterior walls below grade, at grade floors, or below grade floors shall
be sealed to prevent moisture migration. The exterior of the conduit shall be
sealed with a mechanical pipe seal. The interior conduit seal shall be a gland type
sealing bushing or RTV closed cell silicone foam. Ensure that conduits do not
retain water against these seals.

G. Raceways penetrating fire rated walls, floors, and partitions shall be sealed with a
fire rated sealant.

H. All conduits shall be supported with materials specifically made for this purpose.
Do not use wire hangers. Do not attach any parts of the raceway system to
ventilation ducts. Conduit supports shall be attached to the building. Support
conduits on each side of bends and on a spacing not to exceed the following: 6
feet for conduits smaller than 1 1/4 inches and 8 feet for conduits 1 1/4 inches and
larger. Support riser conduits at each floor level with clamp hangers. All
underground conduits shall be securely anchored to prevent movement during
placement of concrete or backfill. Use precast separators and heavy gauge wire
ties or other approved fasteners.

I. Provide E.Y'S. seal fittings with appropriate potting material where conduits enter
or leave a Class 1, Division 1 or 2 environments or a Class 2, Division 1 or 2
environment, and chemical rooms.

RACEWAYS, BOXES AND SUPPORTING DEVICES
WOODARD & CURRAN 26 05 34-9

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

J.

Conduit connections to boxes and fittings shall be supported not more than 36
inches from the connection point. Conduit bends shall be supported not more
than 36 inches from each change in direction. Conduit shall be installed in neat
symmetrical lines parallel to the centerlines of the building construction and the
building outline. Multiple runs shall be parallel and grouped whenever possible
on common supports. Exposed ends of conduit without conductors shall be
sealed with watertight caps or plugs.

Bonding wires shall be used in flexible conduit for all circuits. Flexible conduit
shall not be considered a ground conductor.

Liquid tight flexible metallic conduits shall be used in wet and oily locations and
to complete the connection to motor-driven equipment.

Electrical connections to vibration-isolated equipment shall be made with flexible
metallic conduit in a manner that will not impair the function of the equipment.

A polypropylene pull rope with a tensile strength not less than 130 pounds shall
be installed in empty conduit.

Installation of Underground Conduit

1. Minimum of 3/4 inch conduit in or under concrete slab on grade.

2. Where conduits are installed in concrete slabs, on the ground,
underground, or exposed to the weather, make all joints liquid tight and
gas tight.

3. Bury all underground conduit, except under concrete slabs placed on fill,

to a depth of at least 30 inches below finished grade unless otherwise
indicated on the Drawings.

4. Slope ducts to drain away from buildings into manholes and/or handholes.
Adjust final slopes to coordinate with existing site utilities.

5. Install on undisturbed soil where possible. . Use pit run gravel and sand,
placed 8 inch lifts and compacted for backfill.

6. Reference Specification 26 05 43 UNDERGROUND DUCTS AND
RACEWAYS FOR ELECTRICAL SYSTEMS for further requirements.

Installation of Rigid Metal Conduit

1. Ends of conduit shall be cut square, reamed and threaded, and joints shall
be brought butt-to-butt in the couplings. Joints shall be mechanically
tight. Conduit shall be protected against damage and the entrance of water
or foreign material during construction.

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WOODARD & CURRAN 26 05 34-10

Project Number: 228730 WWTE SCADA Upgrades
Issue Date: August 2017 Nashua, NH

2. Ninety-degree bends of conduit with a diameter larger than 1 inch shall be
made with factory-made elbows. Conduit elbows larger than 2 % inches
shall be long radius. Field-made bends and offsets shall be made with an
approved hickey or conduit-bending machine. Changes in directions of
runs shall be made with symmetrical bends or cast-metal fittings.

3. At connections to sheet metal enclosures and boxes, a sufficient number of
threads shall project through to permit the bushing to be drawn tight
against the end of the conduit, after which the locknut shall be pulled up
sufficiently tight to draw the bushing into firm electrical contact with the
box. Conduit shall be fastened to sheet metal boxes and cabinets with two
locknuts where required by NFPA 70 where insulating bushings are used,
where bushings cannot be brought into firm contact with the box, and
where indicated.

4. Conduit joints shall be made with tapered threads set firmly. Each length
of conduit cut in the field shall be reamed before installation. Where
conduit is threaded in the field, each threaded end shall consist of at least
five full threads. Corrosion-inhibitive compound (cold galvanizing paint)
shall be used on all conduit threads or any locations where the original hot
galvanized surface has been compromised.

5. Conduit stubbed-up through concrete floors for connections to free-
standing equipment except motor-control centers, cubicles, and other such
items of equipment shall be provided with a minimum of a 12” riser above
the floor slab is of sufficient thickness; if not, a floor box shall be provided
and set flush with the finished floor. Conduits installed for future use shall
be terminated with a coupling and plug set flush with the floor.

3.02 SUPPORTING DEVICES

A.

Install supporting devices to fasten electrical components securely and
permanently in accordance with NEC requirements.

Coordinate with the building structural system and with other electrical
installations.

Conform to manufacturer's recommendations for selection and installation of
supports.

Install individual and multiple (trapeze) raceway hangers and riser clamps as
necessary to support raceways. Provide U-bolts, clamps, attachments, and other
hardware necessary for hanger assembly and for securing hanger rods and
conduits.

Support parallel runs of horizontal raceways together on trapeze type hangers.

RACEWAYS, BOXES AND SUPPORTING DEVICES

WOODARD & CURRAN 26 05 34-11