Search

SECTION 02370

EROSION CONTROL
PART 1 —- GENERAL
1.01 WORK INCLUDED:
A. Provide temporary erosion control for the entire duration of project in accordance with
plans, specifications.
1.02 RELATED WORK:
A. Section 02300: EARTHWORK
B. Section 02745: ROAD RESTORATION
C. Section 02920: LOAMING AND SEEDING
1.03 SITE CONDITION:
A. All soil erosion and sediment control measures to be in accordance with standards and

specifications thereof in "Stormwater Management, and Erosion and Sediment Control
Handbook for Urban and Developing Areas in New Hampshire," April 1997, prepared
by Rockingham County Conservation District for NHDES in cooperation with USDA-
SCS.

B. The work area shall be graded, shaped, and otherwise drained in such a manner as to
minimize soil erosion, siltation of drainage channels, damage to existing vegetation,
and damage to property outside the limits of the work area. Silt fences, hay bales
and/or detention basins will be necessary to accomplish this end.

PART 2-— PRODUCTS

2.01

MATERIALS:

A. Stabilized Construction Entrance:

Stabilized construction entrance shall conform to the plans and requirements of the
“Erosion and Sediment Control Design Handbook for Developing Areas of New
Hampshire.”

B. SILTSACK®:

Sediment control devices at catch basins shall be SILTSACK® as manufactured by
Terrafix Geosynthetics, Inc., or approved equal.

2022 Sewer Replacement Project Erosion Control
Nashua, NH 02370-1

C. Silt Fence:

1. Support fence: 14-gauge, 4-inch x 4-inch mesh, 36-inch-high livestock
fence.

2. Post: Post at 6'0" on center to be No. 4 rebar, 2" x 2" wood, 3/4" steel
pipe or equivalent.

3. Fabric: Previous sheet of synthetic polymer from non-woven continuous
filaments manufactured by Mirafi, Inc., Monsanto Textile Co., or Amoco
Fabrics co., meeting the following minimum requirements.
¢ Water permeability - 500 gal/min./ft.2.
¢ Thickness - 70 mils, when tested in accordance with ASTM D-1777.
¢ Bursting strength - 200 psi when tested in accordance with ASTM-D
¢ Trapezoid Tear strength - 50 lbs. when tested in accordance with ASTM

¢ Ultraviolet Degradation - 1 year with less than 25% loss of bursting
and tear strength.

¢ Equivalent Opening Size (EOS) - 50 min. and 100 max.

D. Silt Socks:

1. Silt socks shall be Siltsoxx by Filtrexx (or approved equal) in accordance with
the plans and details.

PART 3 —- EXECUTION

3.01 SILTSACKs® AND STABILIZED CONSTRUCTION ENTRANCE:

A. All SILTSACKs® shall be installed in all catch basins that receive flow from the
disturbed areas of the project in accordance with the manufacturer’s recommendations.

B. SILTSACKs® shall not be removed until finish grading, paving and final loam and

seeding have been completed. Maintain SILTSACKs® in good conditions until
removed.

3.02 ROADWAYS AND PAVEMENT AREAS:

A. As soon as possible after utility work has been installed, the roadways shall be brought

to subgrade, and temporary or permanent gravel base and pavement shall be placed.as
per Specifications.

2022 Sewer Replacement Project Erosion Control
Nashua, NH 02370-2

3.03 REMOVAL OF TEMPORARY EROSION CONTROL MEASURES:
A. All temporary erosion control measures shall be removed once the site has been

stabilized with final pavement, and disturbed loam and seed areas have established a
viable stand of grass.

END OF SECTION

2022 Sewer Replacement Project Erosion Control
Nashua, NH 02370-3

SECTION 02451

FLAGGERS AND UNIFORMED OFFICERS FOR TRAFFIC CONTROL

PART 1 - GENERAL

1.01

A.

1.02

1.03

A.

WORK INCLUDED:

This Section covers the provisions for furnishing Flaggers and Uniformed Police
Officers for Maintenance of Traffic as described in Section 01110 CONTROL OF

WORK AND MATERIALS, to direct traffic through or around work as shown on
the plans or as ordered by the Engineer.

DESCRIPTION:

The Contractor shall coordinate with the Engineer to determine the number of
Flaggers and Officers deemed necessary to provide for public safety and to maintain
a smooth flow of traffic through the construction area(s) affected.

RELATED WORK:

SECTION 01110, CONTROL OF WORK AND MATERIALS

PART 2 - PRODUCTS

2.01

UNIFORMED POLICE OFFICERS:

Contractor shall provide the Traffic Control Officer with a minimum of 24 hours
notice indicating the time of day, street location and confirm number of officers
required for traffic control. This shall be as agreed by the Engineer. The Contractor
may furnish additional traffic control personnel at his/her own expenses but only
those agreed upon by the Engineer will be measured for payment.

Contractor shall give the Traffic Control Officer a minimum of 2 hours prior
cancellation notice should Contractor determine that due to weather or conditions
beyond his control he would not need the scheduled officers.

Contractor shall pay for officer(s) at the prevailing rate established by the local
police department should officers not be needed and the Contractor fails to cancel
the officers as noted in 2.01.B above.

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.

2022 Sewer Replacement Project Flaggers and Uniformed Officers for Traffic Control
Nashua, NH 02451-1

2.02 FLAGGERS

A. The Contractor shall provide the Traffic Control Officer with a minimum of 24 hour
notice indicating the time of day, street location and confirm number of officers
required for traffic control. This shall be as agreed by the Engineer. The Contractor
may furnish additional traffic control personnel at his/her own expenses but only
those agreed upon by the Engineer will be measured for payment.

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

2022 Sewer Replacement Project Flaggers and Uniformed Officers for Traffic Control
Nashua, NH 0245 1-2

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 RELATED WORK:

A. Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS

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

A. Electronic file 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

2022 Sewer Replacement Project Tracer Tape
Nashua, NH 02518-1

Public Works Association (APWA):

Electric Red
Gas & Oil Yellow
Communications Orange
Water Blue
Sewer & Drain Green

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.

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

END OF SECTION

2022 Sewer Replacement Project Tracer Tape
Nashua, NH 02518-2

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

B. Section 02631, PRECAST MANHOLES AND CATCH BASINS

C. Section 02085, POLY VINYL CHLORIDE GRAVITY PIPE AND FITTINGS

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

A. Electronic file consisting 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.

2022 Sewer Replacement Project Building Connections and Drop Connections
Nashua, NH 02530-1

PART 3 - EXECUTION

3.01 INSTALLATION:

A. BUILDING CONNECTIONS:

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.

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.

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.

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
2022 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

1.02

1.03

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.

RELATED WORK:

Section 02631, PRECAST MANHOLES AND CATCH BASINS

Section 02085, POLYVINYL CHLORIDE GRAVITY PIPE AND FITTINGS
Section 01735, CUTTING, CORING and PATCHING

SUBMITTALS: IN ACCORDANCE 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

2022 Sewer Replacement Project Connections to Existing Structures or Sewer Mains
Nashua, NH 02533-1