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ADDENDUM NO. 1
TO
NASHUA, NEW HAMPSHIRE
WASTEWATER TREATMENT FACILITY — HVAC UPGRADES
IFB0292-041017
MARCH 2017
PREPARED BY:
Wright-Pierce
230 Commerce Way, Suite 302
Portsmouth, NH 03801
Addendum No. 1
Page | of 3
Mach 31, 2017
ADDENDUM NO. 1
NASHUA, NEW HAMPSHIRE
WASTEWATER TREATMENT FACILITY — HVAC UPGRADES
As a point of clarification, it should be understood that the Contract Documents govern all aspects of the
project. Informal discussions held over the telephone and/or during the pre-bid meeting are informational only.
All official changes to the Contract Documents are made only by addenda. The following changes and
additional information are hereby made a part of the Contract Documents. All Bidders shall acknowledge
receipt and acceptance of this Addendum by signing and sending back the confirmation page. Bids submitted
without acknowledgement of receipt of this addendum may be considered non-responsive.
A pre-bid conference was held on March 23, 2017.
SPECIFICATIONS
1. Section 01100 — Alternate, Part 2.1.A, ADD the following at the end of the paragraph “The concrete pad
and the electrical conduit to MCC-SP4 will be installed under a separate contract.”
2. Division 16 ADD the following division 16 specifications which is attached to this addendum.
16010 Electrical — General, 16050 Basic Materials and Methods, 16500 Lighting, 16900 Controls and
16950 Testing Electrical Systems and Start-up.
DRAWINGS
1. See partial plans for drawings A-4, E-6 and E-7.
SIGNIFICANT QUESTIONS AND RESPONSES DURING THE BIDDING PERIOD
1. Q: Bid Alt A, ADD Control Building Boiler Room make up air unit. Listed as CMUA-1 on plan set. Sheet
M-4 shows plan view of installation. It was stated during the Pre-Bid meeting that concrete pad will be
installed by others (TBuck). It is not clear where does the new work vs. work done by other (TBuck).
For example, will conduit and penetrations in the concrete pad be installed by others or is it part of bid,
is power being brought to the slab?
See specifications No. 1 above.
The garage will have 2 new electric heaters installed. Where does power feed originate from.
There will be no new electric heaters installed in the garage.
On sheet A-2 should the office labeled Superintendent Room 213 have new ceiling and lights?
See Drawings No. | above.
»
QOD FO Fe #
Sheet M-4, packaged rooftop air conditioning unit schedule (CRTU-1) is bid alternate C. Please add
note indicating Bid Alt C below the table on Sheet M-4. This will help clarify base bid items from bid
alternate items. Confirm the power connection location is in the electric room, MCC-CB-1, at the
breakers labeled spare.
R: Please refer to drawing M-7 for the mechanical schedules. CRTU-1 is a part of the Bid Item 1 (Base
Bid). Bid Alternate C is for the Control Building Lobby Offices and includes CDS-1A, CDS-1B, CDS-
1C and CHP-1.
12883B-Cl Addendum No. 1
Page 2 of 3
5. Q:
R:
6. Q:
R:
7. Q:
R:
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Clarify if offices will be relocated while installing lights and new ceilings. Will contractor be
responsible for relocating things, installing temporary heaters and or AC units?
The personnel and their essential office items (paperwork, computers, files, etc.) will be relocated
during the construction. The office furniture will stay in the offices and the contractor will be required
to cover all office furniture and items with plastic and move these things as necessary and move back
once completed. Per specification 01010A Summary of Work, part 3.1.A.1 it states the following “The
General Contractor shall furnish, install, and maintain a complete temporary heating, cooling and
ventilation systems, including fuel therefore, which will provide heating, cooling and ventilation as
required by the trades and for the protection of personnel in the work spaces, and stored and installed
materials from injury as can be caused by dampness and cold. The General Contractor shall employ,
within the terms of the General Contract, a competent watchman who will maintain and operate the
systems, as required. The General Contractor shall bear all costs incurred from the temporary heating
and ventilation from the time the systems are first required until the date of Final Completion of the
General Contract.”
Will control valves be replaced on SAHU-1A as a part of this contract?
No.
What is the height of the Control Building?
29’-7” to the top of the roof and 34’-4” to the top of parapet.
Addendum No. 1 Mach 31, 2017
Page 3 of 3
16010-1
SECTION 16010
ELECTRICAL - GENERAL
PART 1 - GENERAL
1.1
DESCRIPTION
A.
Provide all labor, materials, equipment, operations, methods and procedures as
indicated in the Contract Documents, together with all items necessary for or
incidental to the completion of the work.
All systems or additions to existing systems indicated in the Contract Documents
shall mean all necessary supervision, labor, equipment and materials required to
provide complete, properly functioning systems.
All systems shall be adjusted, tested, inspected and turned over to the Owner in
perfect working order.
The words "provide", "supply", "supply and install", "install", "furnish" or "furnish
and install", as used in DIVISION 16 or as indicated on the Drawings related to
DIVISION 16 shall mean a complete and properly functioning Electrical installation
performed by the Contractor.
1. Refer to Architectural, Structural, Heating and Ventilating, Plumbing, Process
Piping and Instrumentation Drawings to coordinate material and equipment
locations and electrical requirements.
2. Applicable portions of DIVISION 0 - BIDDING AND CONTRACT
REQUIREMENTS together with DIVISION 1 - "GENERAL
REQUIREMENTS", are part of DIVISION 16.
3. Refer to "SECTION 01630 - SUBSTITUTION AND PRODUCT OPTIONS",
for work affecting DIVISION 16. Refer to SECTION 00100 -
INSTRUCTIONS TO BIDDERS; SECTION 00700 - GENERAL
CONDITIONS: SECTION 00800 - SUPPLEMENTARY CONDITIONS; and
as specified herein regarding substitutions of materials and equipment.
4. Definitions indicated in the "GENERAL CONDITIONS',
"SUPPLEMENTARY CONDITIONS", "INSTRUCTIONS TO BIDDERS"
and "SUPPLEMENTARY INSTRUCTIONS TO BIDDERS" are part of
DIVISION 16, unless otherwise noted.
Division 16 Contract Requirements and Responsibilities:
1. The requirements of Division 16 - Electrical is based on the information
provided in the Contract Documents. This information has been outlined in
either the specifications or the drawings or both. The contractor's responsibility
of Division - 16 Electrical is to review all information in both the specifications
and the drawings in order to determine the complete work required. Whether
the work is specified in the Specifications or shown on the Drawings it is
required as part of the work. No additional compensation or interpretations
stating that it was not shown in both locations will be acceptable or allowed.
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16010-2
ELECTRICAL - GENERAL
F. Work Specified Herein:
1.
Visit and examine the project site and become familiar with all existing
conditions pertinent to the work to be performed thereon. No additional
compensation will be allowed for failure to be so informed. This contractor is
responsible to be familiarized with the conditions of the project during the
bidding period in order to bring any clarifications or issues to the attention of
the Engineer prior to submission of his/her final bid price.
The following scope of work is a brief generalization of the type and extent of
the work specified under DIVISION 16. Detailed requirements are indicated
on the Drawings and in related sections of the Specifications. The work
specified under DIVISION 16 includes, but is not limited to the following:
a. Provide Electrical Service and Distribution Systems as indicated on the
"Single-Line Diagrams", related drawings and schedules, and as specified
herein. There is a significant amount of electrical demolition and
reconnection of equipment to remain for the work required for this project
and therefore a thorough understanding of the existing conditions is critical.
It is to be understood that the drawings do not intend to show or provide
details for all of the existing conditions or equipment to be demolished. In
addition, not all existing condition information may reflect exact conditions
due to the accuracy of existing data and information. As an example there
are a significant number of existing branch circuit panelboards which have
been listed and shown for this project. The existing panelboard schedules
have been shown and noted as could be determined or as noted on existing
information. The Contractor's responsibility is to field investigate and
determine all existing conditions. Any and all existing equipment which is
found to remain shall be reconnected to new panelboards with new conduit
and wiring of equal sizing and conditions which presently exists in order to
provide a complete system reconnection. No exception will be allowed for
any extra compensation to perform this work This contractor is responsible
to be familiarized with the conditions of the project during the bidding
period in order to bring any clarifications or issues to the attention of the
Engineer prior to submission of his/her final bid price.
b. Provide complete lighting system(s), including all necessary fixtures,
hangers, wiring, connections, controls and lamps for areas as shown on the
Drawings and as specified herein.
c. Provide all required 480 Volt, 208 Volt, 240V, and 120 Volt Power and
Control wiring, Signal wiring, grounding, and connections for equipment
specified under DIVISION 15 as applicable except as indicated on the
Drawings and specified herein.
d. Provide all required and supplemental motor starters, protective device
sizes, wire and conduit sizes, holding coil voltages and control voltages
specified under DIVISIONS 15. All rating and sizing shall match the
requirements of equipment specified. No additional compensation will be
allowed for modifications required due to equipment and devices which
differ from those of specified equipment.
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ELECTRICAL - GENERAL
e. Provide complete branch circuit wiring systems including all raceways,
conductors, cables, outlet and junction boxes, wiring devices and device
connections as shown on the Drawings and as specified herein.
G. Work Specified Elsewhere:
1.
2.
The materials and methods used for all Electrical Work indicated in the
Contract Documents shall meet the requirements specified in Division 16.
The following Electrical Work and Work relating to the Electrical Work will
be performed under other Divisions of the Contract Documents. This
Contractor is to review all of the Contract Documents and Drawings and shall
work closely with the other related areas which will affect his/her work under
this Contract in order to avoid any and all conflicts:
a. Substitutions, product options, cleaning up and project record documents
are specified in DIVISION 1.
b. Painting is specified in DIVISION 9.
c. Mechanical equipment is specified in DIVISION 15
d. Firestops are specified in DIVISION 7.
H. Removals and Relocations and Rearrangements:
1.
Examine the existing site, structure(s) and installation(s) for the work of all
trades which will influence the cost of the work under DIVISION 16. This
work shall include removals, relocations, rewiring and rearrangements relating
to the work of all trades which may interfere with, disturb or complicate the
performance of the work under DIVISION 16; and relating to the work
involving systems, equipment and related service lines which shall continue to
be utilized as part of the finished project.
When the Contract Documents indicate elimination of, or structural changes in
walls, floors, ceilings, enclosures, pipe chases, etc., remove, relocate, rearrange
and reconnect as required, all existing Electrical Work such that systems to
remain shall continue to function properly.
Provide in the Base Bid all associated labor, material and costs to include all
removals, relocations, rewiring, rearrangements and reconnections herein
specified, necessary or required to provide approved operation and coordination
of the combined new and existing systems and equipment.
Demolition:
a. Disconnect and remove existing equipment, devices, boxes, conduit, and
associated electrical equipment as shown on the contract drawings.
b. Any demolition, relocation or rearrangement work performed which results
in unused openings in control panels, instrument panels, control stations,
pull or junction boxes, etc., which are to remain shall be plugged by
appropriate means such that it maintains the integrity of the NEMA
classification of the area, as defined on Drawing E-1.
c. Any demolition, relocation or rearrangements which results in unused
openings in walls, ceilings, floors, etc. shall be sealed using approved
methods to maintain the fire rating and NEMA classification of the existing
structure.
d. Review all Contract Documents and coordinate with all disciplines for a
complete understanding of this demolition work. Provide all new work
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5.
1.
16010-4
ELECTRICAL - GENERAL
required to modify these changes along with all requirements for installation
of the new work, as shown on the Contract Drawings.
There are areas where the demolition shall require that existing pullboxes,
conduit, wiring and associated devices be disconnected, removed, relocated
and in some cases be replaced in order for the new equipment, walls,
structures, etc. to be constructed and installed. In most cases, the detail of
these existing conditions has not been shown. This Contractor will be
responsible to perform all work necessary to demolish all required conduit,
wiring, boxes and associated equipment for the noted and intended
demolition. At no time shall this Contractor imply that he/she does not
understand the responsibility of associated demolition as the Contractor
shall visit the site locations and shall become familiar with the areas where
this work is to be performed. If there are any concerns or issues regarding
this work they need to be addressed and submitted to the Engineer for
clarification prior to submission of the final bid price for the work of this
Contract. All costs associated with this work is the responsibility of this
Contractor and shall be included as part of the overall costs for the electrical
work of this project. No additional costs shall be allowed by this Contractor
for any demolition work required under the work of this contract.
Disconnect and remove all abandoned conduits, wiring, boxes, equipment,
controls, hangers, etc. shown or not shown, which is located within the area
of construction under this contract.
The Contractor is responsible for temporary power associated with Removals,
Relocations, and Rearrangements to maintain the existing facility operational.
Refer to section within this section for requirements.
I. Codes and Fees:
Comply with the following codes, standards, regulations and specifications:
a.
b.
C.
> whee
National Electrical Code (N.F.P.A. No. 70 - most recent edition)
Life Safety Code (N.F.P.A. No. 101 - most recent edition)
Occupational Safety and Health Act (O.S.H.A.) - regarding construction
practices.
Utility company standards, specifications and requirements.
Telephone company standards, specifications and requirements.
Cable company standards, specification and requirements.
State and local electrical codes, building codes, and fire codes for the locale
where the work is to be performed.
N.F.P.A. 820 Standards for Fire Protection in Wastewater Treatment and
Collection Facilities.
Compliance with the above codes, standards, etc., does not relieve the
Contractor from the requirements of the Contract Documents which may
exceed these codes, standards, etc. but which are not contrary to them.
If it is observed that the Contract Documents are at variance with any of the
above codes, standards, etc., promptly notify the Engineer in writing, and
necessary changes shall be adjusted by appropriate modification. If any work
is performed which is contrary to such codes, standards, etc., the Contractor
shall assume full responsibility therefore and shall bear all costs in correcting
such work in order to comply with such codes, standards, etc.
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4.
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ELECTRICAL - GENERAL
Secure and pay for all permits, fees and licenses necessary for the proper
execution of the work under DIVISION 16.
Tests and Procedures Prior To Start-up:
Refer to Section 16950 - Testing Electrical Systems and start-up for testing and
scheduling requirements.
Demonstration of Complete Electrical Systems:
1.
2
The Owner will assume no liability or responsibility for any portions of the
installation under this Contract until they are demonstrated and accepted in
writing. Final demonstrations shall be made only after the Engineer is satisfied
that the work has been completed in accordance with the intent of the Contract
Documents.
Refer to Section 16950 for additional requirements.
Identification:
1.
All distribution equipment (switchboards, motor control centers, distribution
panelboards, transformers, transfer switches, disconnects, starters, control
panels, control stations, etc.) shall have an engraved lamacoid tag, permanently
mounted adjacent to the manufacturer's nameplate, indicating the equipment's
designation (as called out on the Drawings) and identification number per the
Contract Documents.
All switchboard and distribution panel overcurrent devices, motor control
center devices, individually mounted motor controllers, disconnect switches,
control devices, etc., shall be provided with permanently attached engraved
lamacoid tags indicating the equipment which they serve or control per the
equipment designation and identification number indicated in the Contract
Documents, and in accordance with OSHA requirements.
All branch circuit panelboards shall have, on the inner side of the door, a
permanently attached, engraved lamacoid tag with the identification number of
that panelboard. Provide and mount under plastic, in the directory frame of
each panelboard, a neatly typewritten directory identifying the branch circuit
overcurrent devices and the circuits, devices and areas which they serve.
All individually mounted panelboards, disconnects, motor controllers, control
stations, etc. shall have a second engraved lamacoid tag below the first one
which identifies from where the equipment is receiving power. This second
label shall be smaller in height.
Nomenclature on these nametags shall be project specific and wherever
possible shall be full and complete. Excess abbreviations will not be allowed.
Power conductors shall be continuously polarized and color coded throughout
using the following scheme:
a. White or gray - All neutral conductors, 208/120V systems
b. White w/tracer of any color but Green - All neutral conductors, 480/277 volt
systems
c. Green - All ground conductors
d. Phase Conductors
208/120V 240/120V 480/277V
Systems Systems Systems
Phase A - Black Phase A - Black/(Red) Phase A - Yellow
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ELECTRICAL - GENERAL
Phase B - Red Phase B - Red/(Blue) Phase B - Brown
Phase C - Blue Phase C - Orange
e. For Conductors No. 6 and smaller, color coding shall correspond to the
color of the conductor insulation. For color coding of wire larger than
No. 6, use self-adhesive, wrap-around type markers. These markers shall
be used at all panelboards, junction boxes, disconnect switches, circuit
breakers, etc.
7. Control conductors shall be identified using numerical tags corresponding to
conductor designations indicated on approved shop drawings of schematic
diagrams, and as required for clarification of system and equipment
connections. Conductors shall be clearly identified at each terminal block,
equipment connection and junction. Tags and labels shall be pre-manufactured
for intended purpose.
8. Lamacoid tags shall be nominal 1" x 4" with 3/8" white lettering on black
background.
9. The following safety signage shall be provided for the following equipment.
Signage shall be lamacoid plastic (Large Letters) yellow background with red
engraved letters:
a. All switchboards, motor control centers, VFD equipment, automatic
transfer switches, solid-state, reduced-voltage starters, enclosed circuit
breakers, etc., shall be provided with signage to read "DANGER - HIGH
VOLTAGE". Each section (vertical component of multi-section enclosure)
shall be furnished with an individual signage. Final requirements shall be
determined at the discretion of the Engineer.
b. All motor control center motors starters, individual motor starters and/or
control panels shall be provided with signage to read "CAUTION - This
Enclosure Contains Voltage Sources from Outside of This Enclosure".
c. All switchboards, motor control centers, panel boards, transformers control
panels, etc., shall have large letter lamacoid nameplates which reflect the
full tag names and designations noted on the Contract Drawings.
d. All switchboards, motor control centers, panel boards, transformers control
panels, etc., shall have Arc Flash labels as provided and determined by the
Arc Flash Study.
M. All electrical equipment shall be suitable for the areas where mounted in accordance
with Area Classifications indicated on Electrical Drawings. In specific, refer to
Drawing E-1 NEMA classification for Electrical Equipment and Enclosures for
specific requirements and these specifications. In addition, there are several areas
which have been indicated to meet NEC National Electrical Code requirements
based on the final location of the equipment. Coordinate and provide these NEMA
ratings whether or not specifically stated on the Drawings. Contractor shall assure
that the proper type, enclosure, mounting and catalog numbers are provided during
the Submittal phase.
1.2 QUALITY ASSURANCE
A. Supply all new materials, devices and equipment in conformance with:
1. Underwriter's Laboratory, Inc.
2. National Electrical Manufacturers Association.
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1.3
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ELECTRICAL - GENERAL
American National Standards Institute.
National Electrical Code (NEC).
Local Power Company.
Local Telephone Company
. OSHA
B. All materials provided under this Contract shall be equal in quality, appearance and
performance to that specified herein and shall be subject to no exceptions taken by
the Engineer. Verify the availability of all materials proposed to be used in the
execution of the work prior to submitting same for the Engineer's review. The
discontinuance of production of any material or product after the Engineer's review
has been made shall not relieve the Contractor from furnishing an alternate of equal
quality and design without additional cost.
C. Materials and equipment furnished under this Contract shall be standard products of
manufacturers regularly engaged in manufacture of such products and shall be
manufacturer's latest standard design that complies with Specification
requirements. Products shall essentially duplicate material and equipment that have
been in satisfactory local use at least three years.
D. The Contractor shall have supplied comparable systems to those specified herein
and shall maintain engineering and service departments capable of designing and
maintaining these systems. For a period of twelve (12) months from the date of
acceptance of the work, provide all necessary supervision, labor, materials, and
equipment, in order to correct any defects in any system due to faulty materials,
equipment, installation methods, or workmanship and consequent damage resulting
from such defects. This work shall be scheduled during normal working hours and
at the convenience of the Owner.
E. All switchboards, motor control centers, panelboards, motor starters, transformers,
and distribution equipment shall be by the same manufacturer based on providing
the Owner with equipment of the same type. This will allow for replacement and
spare parts of the same type and also allow efficient maintenance of this equipment.
F. All electrical equipment shall be suitable for the areas where mounted in accordance
with Area Classifications indicated on Electrical Drawing E-1. Contractor shall
assure all equipment is installed in strict accordance with the latest version of the
National Electrical Code.
G._ All equipment to be submitted such as low voltage switchboards, motor control
centers, panelboards, dry-type transformers, motor starters, disconnect switches, etc.
shall be furnished by the same single manufacturer unless otherwise noted.
Substitutions of multiple manufacturers for this equipment shall be rejected.
IAM Y
SUBSTITUTIONS
A. General
1. Where new equipment is specified to be provided as part of an extension to an
existing system, the manufacturer of the new equipment shall match that of the
original. Substitutions will not be considered as equal unless specifically noted
SO.
2. Certain new equipment and systems have been specified with one or more
make(s) followed by the phrase "or equal". In such cases, the Contractor may
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