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Technical Specifications 2020 Pavement Preservation

Technical Specifications
A, SCOPE

The work covered by this section of the specification consists of furnishing all materials, labor,
transportation, equipment necessary, and traffic control including flaggers to perform all
operations in connection with the cleaning, sterilizing, removing vegetation, and sealing of
construction and random cracks in bituminous concrete pavements with an approved sealant
material. The Contractor shall furnish all materials, labor, traffic control, equipment, and
transportation necessary for work in accordance with the latest approved City of Nashua
Standard Specification for Road Construction, or the latest approved NHDOT Standard
Specifications for Road and Bridge Construction Section 413 - Hot Poured Crack Sealant. The
most stringent specification shall apply.

B. MATERIAL

Material shall be of the hot-poured type and be a product as included on the NHDOT Qualified
Products List - Hot Poured Crack Sealant, Type II (Item 413.1).

Cc. EQUIPMENT

Equipment used in the performance of the work shall be subject to approval by the Engineer, and
maintained in a satisfactory working condition at all times.

Air Compressor: Air compressors shall be capable of furnishing not less than 100 cubic feet of
air per minute at not less than 90 lbs. per square inch pressure at the nozzle. The compressor
shall be equipped with traps that will maintain the compressed air free of oil and water.

Melting Kettle: Melting kettles shall be of the double-boiler, indirect fired type. The kettle shall
be equipped with a metal shield beneath the firebox to protect the pavement. The space between
the inner and outer shells shall be filled with a suitable heat transfer oil or substitute having a
flash point of not less than 530°F. The kettle shall be equipped with a satisfactory means of
agitating the joint sealer to maintain a uniform temperature. This may be accomplished by
continuous stirring with mechanically operated paddles and/or by a circulating gear pump
attached to the heating unit. Kettles equipped with a rocking type agitation shall not be used, The
kettle shall be equipped with a thermostatic control calibrated between 200°F and 550°F,

Hot-Air Lances: Hot-air lances for blowing clean and drying cracks shall be an approved
propane gas burner and compressed air device that does not allow the flame to touch the
pavement.

BD. CONSTRUCTION

Preparation of Cracks: All cracks shall be hot-air lanced cleaned of dirt, vegetation, foreign
material, and loose edges.

Page I of 3

Technical Specifications 2020 Pavement Preservation

Preparation and Placement of Sealant

The hot-poured sealant shall be maintained in the kettle and applied at the temperature range
specified by the manufacture.

The hot poured sealant shall be applied to the cracks by wand applicator within 2 minutes
following hot-air lance cleaning. The diameter of the applicator shoe is not to exceed 3.5 inches.

All cracks to be treated shall be filled to 1/16” to 1/8” below the pavement surface and have 1.5”
band on either side of the crack with hot-poured sealant with the sealant left slightly concave.
Filling flush, overfilling, and over banding of cracks will not be allowed. Sealant shall tightly
bond to the pavement. The sealant bond to the pavement shall be checked after it had sufficiently
cooled. If the sealant does not bond to the pavement, sealant shall be removed and crack sealing
operations discontinued until debonding problem is corrected.

No hot-air lance cleaning or crack sealing shall be performed when the pavement and cracks are
wet or the ambient temperature is below 50°F.

The contractor must have a full kettle of sealant mixed, heated to the proper application
temperature, and ready for testing at the start of each work day. Once that batch of sealant is
emptied from the kettle, crack sealing operations will cease for the remainder of the day. No
new materials will be allowed to be added to the kettle during the work day under any
circumstances.

The contents of the kettle shall be emptied at the end of each day and shall not be reused.
The sealant shall be allowed to cool sufficiently to prevent lifting, sticking, and tracking prior to

returning the pavement segment to traffic. When traffic requires immediate use of the roadway, a
boiler slag aggregate shall be broadcast over the cracks to prevent the sealant from being picked

up.

All workmanship shall be of the highest quality, and any excess of spilled sealant shall be
removed from the pavement by approved methods and discarded.

E. PERFORMANCE
The contractor must submit the manufacture and product specifications to the Engineer certifying
conformance to this specification and preform a 200 foot test strip in the field prior to the

commencing work under the contract.

Manufacturer’s certificate of material compliance shall be furnished to the Engineer certifying
conformance to the above material specifications.

D. TRAFFIC CONTROL — Flaggers, Uniformed Officer, & Maintenance of Traffic

Traffic control shall be included in the lump sum price per street.

Page 2 of 3

Fechnical Specifications 2020 Pavement Preservation

While completing the bid form to enter cost to crack seal each street, the contractor shall also
include the cost to manage traffic through or around the work as ordered by the Engineer. The
Contractor shall supply qualified flaggers as per the latest approved NHDOT Standard
Specifications for Road Construction.

This work shall consist of providing and maintaining safe and passable traffic accommodations
for public traffic and furnishing, erecting and maintaining necessary traffic signs, barricades,
lights, signals, delineators, concrete barriers, signs, and other traffic control warning devices
through the work zone.

General

The Contractor shall furnish all labor, materials, equipment and transportation necessary for the
required maintenance of traffic needs based on the Contractors daily operations in accordance
with the latest approved NHDOT Standard Specifications for Road and Bridge Construction, and
the latest approved MUTCD.

Signage

At a minimum, the Contractor’s crew shall, at all times carry the following to be used as the need
may arise:
eo 2ROAD WORK AHEAD (MUTCD W20-1)

e 2 ONE LANE ROAD AHEAD (MUTCD W20-4)
2 2 DIRECTIONAL ARROW SIGN (MUTCD W1-6)
e 2 FLAGGER SIGN (MUTCD W20-7)

Contractor shall provide 2 variable message signs for use on major roads.
Permits:

Contractor shall be responsible for getting approved street opening permits, submitting traffic
control plans for all major streets, obtaining lane closure or detour approval permits, and
obtaining emergency work permits.

F. MEASUREMENT AND PAYMENT
The unit of measurement will be per completed street, as determined by the Engineer. Payments
shall be at the lump sum price per street as set forth in the contract and shall include full

compensation for fumishing all materials, labor, transportation, equipment necessary, traffic
control including flaggers, and all else needed to complete the work under this item.

Page 3 of 3

THE CITY OF NASHUA “The Gate Cty

Financial Services

Purchasing Department

May 28, 2020
Memo #20-107

TO: MAYOR DONCHESS
FINANCE COMMITTEE

SUBJECT: CONTRACT FOR 2020 SIDEWALK PROGRAM (VALUE: $171,759)
DEPARTMENT: 161 STREETS; FUND: CAPITAL

Please see the attached communication from Daniel Hudson, City Engineer dated May 28, 2020 for
information related to this purchase.

Pursuant to § 5-78 Major purchases (greater than $10,000) A. All supplies and contractual services,
except as otherwise provided herein, when the estimated cost thereof shall exceed $10,000 shall be
purchased by formal, written contract from the lowest responsible bidder, after due notice inviting bids.

The City Engineer, Board of Public Works (May 28, 2020 meeting) and the Purchasing Department
recommend the award of this contract in an amount of $171,759 to RWC Enterprises of Nashua, NH.

Respectfully,

Dan Kooken
Purchasing Manager

Cc: D Hudson L Fauteux

i

'
i

229 Main Street e Nashua, New Hampshire 03061 « Phone (603) 589~3330 » Fax (603) 589-3233

To:

From:

Re:

D. Motion:

Attachment:

Discussion:

City of Nashua, Public Works Division

Board of Public Works Meeting Date: May 28, 2020

Daniel Hudson, P.E., City Engineer
Engineering Department

2020 Sidewalk Program

To approve the award of the construction contract for the 2020 Sidewalk Program
to RWC Enterprises of Nashua, NH in an amount of $171,759. Funding through
Department: 161 Streets; Fund: Capital; Activities: Sidewalk Improvements and
City Infrastructure Improvements.

Sidewalk Program Map

The 2020 Sidewalk Program is expected to reconstruct approximate 900 linear
feet of sidewalk on the south side of East Hollis Street from CVS to Harbor
Avenue. This will include construction of concrete pedestrian sidewalk, resetting
curb, and ADA compliance improvements at Medical Center Drive.

The existing sidewalk is in poor condition after years of patch work repairs and
overlays. Some granite curb is damaged or missing, and the existing road
crossings are not ADA compliant. This portion of East Hollis Street will be paved
by Brox later in the summer.

The contract was advertised on March 10, 2020 and only a single bid received as
follows:

RWC Enterprises $ 171,759

RWC Enterprises of Nashua, NH is the qualified low bidder. References have
been checked and were found to be acceptable.

IF B0851-032720

Construction Specifications
and
Contract Documents

Prepared By:

City of Nashua, New Hampshire
Division of Public Works
Engineering Department

2020 Sidewalk Program

TABLE OF CONTENTS

DIVISIONS
1 ENVITATION FOR BID .......cccccccsscsscccsscenscrsssecsuanrcasecsceerconncsecrsacnsenerssansansensesauseeasaauessuevessaueeesers
2 INSTRUCTIONS FOR BIDDERG...............cc:ccccssesscneseeccessenssceersasnsenessececearenseneeeeesseseesuensrasssauasess
3. BID FORM, BID BOND, SCHEDULE OF VALUES, CONTRACTOR’S QUALIFICATIONS ..........
4. PERFORMANCE AND PAYMENT BONDS, CERTIFICATE OF LIABILTY INSURANCE. ..............
5. AGREEMENT ...........0..ccssccseccceescccscrssecssesresecevcucesccnsusrstesesecesssesuanersgacssuerseaceeeeusnsvsnsearerasensnauress
6 GENERAL CONDITIONS .........:cccccesescnsercntessnscccssnersensessneeuegeererenseneesedsavesesstassransensueraueee
7 PROSECUTION OF WORK ....ccsccssssrercetessansssarenenssssetenensnsessereceusesrsscenssensseeseusacatcasauaenseeran
8 EXHIBITS .......2....cceccseecersssccreresconetenrenccnansacevenaaeueauccenstnsinuscerseussteueeencasecaauusessduaseraussnares

A. Notice of Award

B. Notice to Proceed

C. Change Order

D. Certificate of Substanial Completion

E. Certificate of Final Completion

F. Consent of Surety for Final Payment

G. Contractor's Affidavit

H. Contractor's Final Release and Waiver of Lien
9. TECHNICAL SPECIFICATIONS. .........csccsnccercsccnenearcesccsacnssceaueatessscusreseeustersasaasacaseanauesasereces

A. NHDOT Supplemental Specifications (2016 Edition) — updated July 6, 2018
B. Special Provisions

TC-1 of 1

¢4 THE CITY OF NASHUA the Gate Cy’

Franehal Services

Purchasing Depuriuent

March 12, 2020
IF B0851-32726
2020 SIDEWALK PROGRAM

ADDENDUM #1

Information in this document becomes & part of the original Invitation for Bids.

Addendum #1 is being issued to correct a date error that was discovered after the Invitation for Bids was posted
to the City of Nashua’s website.

All other aspects of the original docunient remain the same.

Please sign below to indicate receipt of this additional information and include this page with your IFB
submittal.

Thank you,
Airy Girard

City of Nashua Purchasing Agent I

eirarda@inashuanh.gov
Phone: 603-589-3337

Addendum # 1 received and incerporated into our submittal fer EFB0851-032720.

Please sign and include this addendum in your propesal package.

(Authorized Signature)

S Jt} 20 Zo
(Date)

RIC Crd IOC prise $

(Name of Firm)

1FB0851-032720 2020 Sidewalk Program
290 Main Streat ¢ Nashua, Naw Hampshire 03051 ¢ Phone (603) 589-3330 ° Fax (603) 589-3233

TP BQS51-032726
ADDENDUM #1

2020 SIDEWALK PROGRAM

Addendum #1 is being issued to correct a date error discovered in the City’s Invitation for Bids

The original Invitation For Bid, dated March 10, 2020, is hereby amended as follows:

1. Page 1 ~ INFORMATION FOR BIDDERS: DELETE the third sentence “Regardless
of the methed of submission, bids must be received no later than 3:00 pm on
Priday, April 03, 2020." and INSERT “Regardless of the method of
submission, bids must be received no later than 3:60 pm on Friday, March

27, 2620.”

IFBO851-D22726 2020 Sidewalk Program Page [| 2

a THE CITY OF NASHUA “The Gate City”

Parhesing Departnent

March 17, 2020
[FBOBS 1-032726

2020 SIDEWALK PROGRAM

ADDENDUM #2

information in this document becomes a part of the original Invitation to Bid.

Addendum #2 is changing the Bid Due Date from Friday, March 27, 2020 at 3:00 p.m. to Friday, April 10, 2020
at 3:30 p.m.

AJl other aspects of the original document remain the same.

Please sign below to indicate receipt of this additional information and include this page with your IFB
submittal.

Thank Sin

a /atth

Purchasing Manager
kookend@nashuanh.gov

Addendum #2 received and incorporated into our submittal for 1FB0851-032720.

Please sigm and include this addendum in your proposal package.

(Authorized Signature)
4 yj Zero

(Date)
fel. C pte [fer
(Name of Firm)

‘Addendum 2 for iFB0852-032720 2020 Sidewalk Program
229 Main Street * Nashua, New Hampshire 03052 = Phone (G03) 589-3220 © Fax (G03) 589-3233