Search

D. Where the Owner is paying directly for Uniformed Officers, the Contractor shall be
responsible for payment of the wages paid to the Uniformed Police Officers if the Contractor
fails to cancel the services of the Uniformed Officers in accordance with 2.01.B and
2.01.C above.

PART 3 - EXECUTION
3.01 OPERATION:
A. Contractor shall provide barricades, barrier fences, traffic signs, and other traffic control
devices as shown on the plans, required by the City’s Traffic Department, or as directed by
the Engineer, to protect traffic, pedestrians, and animals from the work area.

B. Contractor shall relocate barricades, signs and other devices as necessary as the work
progresses as directed by the Owner’s Traffic Control Officer or the Engineer.

C. _ Flaggers shall be provided with the necessary safety equipment.

END OF SECTION

2019 Sewer Replacement Project Flaggers and Uniformed Officers for Traffic Control
Nashua, NH 02451-2

SECTION 02518

TRACER TAPE

PART 1 -GENERAL
1.01 WORK INCLUDED:

This section covers the furnishing, handling and installation of tracer tape, as called for on the
drawings.

1.02 SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

A. — Six sets of manufacturer's literature on the materials, colors and printing specified herein,
shall be submitted to the Engineer for review.

PART 2 - PRODUCTS

2.01 |. ACCEPTABLE MANUFACTURERS:

Tracer tape shall be by Lineguard, Inc.; Empire Level; Pro-Line Safety Products Co.; or
approved equal.

2.02 TRACER TAPE:

A. _ Tracer tape shall be at least 4-inches wide.

B. Tracer tape for non-ferrous pipe or conduit shall be constructed of a metallic core bonded to
plastic layers. The metallic tracer tape shall be a minimum 5-mil thick and must be
locatable at a depth of 12 inches with ordinary pipe locaters.

C. The tape shall bear the wording: "BURIED SEWER LINE BELOW" with "SEWER",
continuously repeated every 30 inches to identify the pipe.

E. Standard tape colors shall be as follows, as recommended by the American Public

Works Association (APWA):
Electric Red
Gas & Oil Yellow
Communications Orange
Water Blue
Sewer & Drain Green
2019 Sewer Replacement Project Tracer Tape

Nashua, NH 02518-1

PART 3 - EXECUTION

3.01 INSTALLATION:
A. _ Tracer tape shall be installed directly above the pipe or conduit it is to identify,
approximately 12 inches below the proposed ground surface.

The Contractor shall follow the manufacturer's recommendations for installation of the
tape, as approved by the Engineer.

END OF SECTION

Tracer Tape

2019 Sewer Replacement Project
02518-2

Nashua, NH

SECTION 02530
BUILDING CONNECTIONS AND DROP CONNECTIONS
PART 1 - GENERAL
1.01 §©=WORK INCLUDED:

A. This Section covers furnishing of all materials and labor to construct building sewer
connections and drop connections as indicated on the Drawings, and as herein specified.

B. _ Final location of building connections shall be determined in the field by the Engineer.
1.02 RELATED WORK:
A. Section 02300, EARTHWORK
Section 02631, PRECAST MANHOLES AND CATCH BASINS
C. Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS

1.03 SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

A. Six sets of shop drawings and manufacturers literature of the materials of this section shall be
submitted to the Engineer for review.

B. Shop drawings of any special connections, including the proposed adapters for service
connections, shall be submitted to the Engineer.

PART 2— PRODUCTS
2.01 MATERIALS:

A. __ Pipe and fittings for drop connections and for gravity building connections shall be as
specified under Section 02085 POLYVINYL CHLORIDE GRAVITY PIPE AND
FITTINGS. Adaptors shall be as recommended by the pipe manufacturer.

B. Concrete for encasement shall be as specified in Section 03302 FIELD CONCRETE.

PART 3 - EXECUTION
3.01 INSTALLATION:

A. BUILDING CONNECTIONS:

2019 Sewer Replacement Project Building Connections and Drop Connections
Nashua, NH 02530-1

1. Building connections shall be installed using the same construction and pipe joining
techniques as specified in Section 02085 POLYVINYL CHLORIDE GRAVITY PIPE
AND FITTINGS.

2. In general, connections shall be carried only to the property line. The end of the pipes
shall be closed with PVC stoppers jointed in place to ensure against infiltration into the
sewer line.

3. In general, the mainline sewer has been designed at depths to accommodate full
basement service for each building to be connected. Building connections must be
installed at the proper depth in every case that full basement service is possible for the
building. The CONTRACTOR will be required to excavate, remove, reinstall and
backfill any building connection improperly installed at his own expense. The
CONTRACTOR will demonstrate to the Inspector that all connections are properly
made.

4. In streets where building sewers must cross water mains, the CONTRACTOR will
install the building sewers at proper depths to maintain the vertical clearance between
the two pipes, as shown in the construction details. Building services shall be installed
beneath water mains.

B. DROP CONNECTIONS:

1. | When the invert of a pipe entering a manhole is 24 inches or more above the invert of
the lowest pipe leaving the manhole, it shall be connected to the manhole with an
inside drop section.

2. The drop pipe shall be the same diameter, material, and class as the sewer pipe
entering the manhole, unless otherwise noted in the drawings. The drop connection
shall be constructed as shown on the City of Nashua Standard details.

3. All connecting hardware shall be stainless steel.

END OF SECTION

2019 Sewer Replacement Project Building Connections and Drop Connections
Nashua, NH 02530-2

SECTION 02533
CONNECTIONS TO EXISTING STRUCTURES OR SEWER MAINS
PART 1 - GENERAL
1.01 WORK INCLUDED:
The Contractor shall furnish materials, tools, labor and equipment to cut suitable openings
into the existing sewer manholes, make connections to existing sewers and all other work
necessary to direct the existing sewage flow as indicated on the drawings and as herein
specified.
1.02 RELATED WORK:
Section 02631, PRECAST MANHOLES AND CATCH BASINS
Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS
Section 01735, CUTTING, CORING and PATCHING

1.03 SUBMITTALS: INACCORDANCE WITH REQUIREMENTS OF THE GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

Prior to start of work, submit details of the methods proposed for doing the work and for
maintaining the sewage flow as herein specified.

PART 2 - PRODUCTS

A. Products for attaching to existing sewer manholes are described in Sections 02631, Precast
Manholes and Catch Basins; and Section 01735, Cutting, Coring and Patching.

B. Products for attaching sewer service lines or drain lines to existing sewer mains:

1. Connection of new sewer service or drain pipe to existing sewer mains shall be by
mechanical saddles (as described in items 2 and 3 below). The connection device
shall provide a firm base that will hold and attach the service main to the existing pipe
without the possibility of the pipe becoming loose or detaching from the main.
Putting the pipe in the main and grouting around it will not be allowed.

2. Where feasible and sizing allows this type of connection, the preferred method of
attachment of PVC service or drain pipe to the existing main is by aROMAC “CB”
Sewer Saddles or equal.

2019 Sewer Replacement Project Connections to Existing Structures or Sewer Mains
Nashua, NH 01330-1

3. Should the ROMAC type service connection not be feasible due to pipe size or other
constraints, the connection may be made using a Kor-N-Tee, Inserta Tee or equal.
These types of fittings rely on having enough of the pipe wall thickness present to
create tension between the fittings the pipe wall such that fitting will be held securely
in place. Should the Contractor elect to use this type of fitting the submittal must
include an evaluation of the existing pipe wall thickness and provide cut sheets from
the manufacturer showing this type of fitting will achieve the desired results.

PART 3 - EXECUTION

3.01 INSTALLATION:

A. The Contractor shall provide temporary plugs or provide other suitable means for
maintaining the new sewer free of sewage flow until such time as it can be inspected and
tested for leakage.

B. Connections to the new sewer shall be made when directed by the Engineer and only after
the new pipeline has been inspected and has successfully passed the leakage test.

C. The Contractor shall modify each existing structure for installation of the necessary piping,
but in so doing shall confine the cutting to the smallest amount possible consistent with the
work to be done.

D. All new piping connected to existing structures shall be encased in concrete in a manner
satisfactory to the Engineer.

E. All work shall be done with the proper tools and by careful workmen competent to do
work.

F. The Contractor shall cut, reshape and fill the existing manhole tables and plug existing
outlets as indicated on the drawings and as directed by the Engineer, to accommodate the
new connections. Reshaped manhole invert channels shall be smoothly shaped to permit
the flow of sewage. Manhole invert channels shall be reconstructed as specified under
Section 02631, PRECAST MANHOLES AND CATCH BASINS and shall comply with
the City of Nashua Standard Specifications for Sewers and Drains.

END OF SECTION

2019 Sewer Replacement Project Connections to Existing Structures or Sewer Mains
Nashua, NH 01330-2

27 Locke Road Concord, NH 03301

The H.L. Turner Group Inc.

#: 603.228.1122 hiturner.com

Nashua Riverfront Development Project
Final Engineering Design

5/11/2022
TASK DESCRIPTION WORK HOURS yore
PM Structural PE SrPD tis HOURS
Segment 5 - Multi-Use Path Connector Fas
5.1- Erosion & Scour Determination 8 20 F3 at
TOTAL HOURS 8 0 20 0 2 30
ESTIMATED ENGINEERING COSTS
Work Estimated
Hours Hourly Rate Costs
Project Manager (PM) 8 $5 150.00 $5 1,200.00
Structural Engineer (Structural) i) 5 185.00 $
Project Engineer (PE) 20 §$ 130,00 $ 2,600.00
Sr. Project Designer | (Sr PD) 0 $ 105.00 $ -
Technical Coordinator (TC} 2 §$ 100.00 $ 200.00
| 30 } Total Fully Burdened Labor $ 4,000.00
Subconsultant $ :
Expenses $ 100.00
Estimated Direct Costs 5 — 100.00_
TOTAL ESTIMATED COST= $ 4,100.00

SECTION 02534
FILL SEWER PIPE TO BE ABANDONED
PART 1 - GENERAL
1.01 WORK INCLUDED:
The existing sewer pipe to be abandoned in place shall be completely filled with
"Flowable Fill" after the sewerage has been re-routed through the new sewer main.
The work shall include all materials, labor, pumping, shoring, and cleanup required
to complete this item.
1.02 RELATED WORK:
Section 02631, PRECAST MANHOLES AND CATCH BASINS

1.03 SUBMITTALS: IN ACCORDANCE WITH REQUIREMENTS OF THE GENERAL
SPECIFICATIONS, SUBMIT THE FOLLOWING:

The contractor shall submit his proposed method for filling the pipe to be abandoned
to the Engineer for approval two (2) weeks prior to scheduling the work. The
"Flowable Fill" mix shall be comprised of Portland cement, water, sand and other
additives to insure that the material shall flow the entire length of the pipe and
completely fill the void. The mix design for the "Flowable Fill" shall be submitted to
the Engineer for approval.

PART 2 - PRODUCTS - NOT APPLICABLE

PART 3 - EXECUTION

3.01 INSTALLATION:

A No work shall be done without approval from the Engineer. The contractor shall
demonstrate to the Engineer by visual inspection or other means that the existing
pipe has been completely filled.

B. All work shall be done with the proper tools and by careful workmen competent to do

work.

END OF SECTION

2019 Sewer Replacement Project Fill Sewer Pipe To Be Abandoned
Nashua, NH 02300-1

SECTION 02631

PRECAST MANHOLES AND CATCH BASINS

PART 1 - GENERAL
1.01 WORK INCLUDED:

A. This Section covers all precast manholes and catch basins complete, including, but not
limited to, bases, walls, cones, mortar, inverts, frames and covers.

B. Work shall comply with City of Nashua Standard Specifications for Sewers and Drains
(Appendix A).

1.02 RELATED WORK:

Section 01330, SUBMITTALS

Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS
Section 02300, EARTHWORK.

Section 02745, ROAD RESTORATION

mo Oo BP PS

Section 03302, FIELD CONCRETE

1.03 SYSTEM DESCRIPTION:

A. _ Precast sections shall conform in shape, size, dimensions, materials, and other respects to the
details indicated on the drawings or as ordered by the Engineer.

B. All manholes and catch basins shall have precast concrete bases, risers and cone sections.
Invert channels shall be formed of brick and mortar upon the base.

C. Catch basins shall have a 3-foot deep sump unless otherwise specified.
1.04 REFERENCES:

A. The following standards form a part of this specification as referenced:

American Society for Testing and Materials (ASTM)

ASTM A48 Gray Iron Castings
ASTM C32 Sewer and Manhole Brick
2019 Sewer Replacement Project Precast Manholes and Catch Basins

Nashua, NH 0263 1-1