Agenda

F. Watertight type manhole frames with 32-inch diameter covers (bolted and gasketed) shall be
4 bolt, 630 pounds minimum by E.L. LeBaron Foundary Co. No. LCB328; Quality Water
Products, Style C47WT; Neenah Foundary Co., R-17550-H or approved equal.

G. Catch basin frames with 2-1inch square openings and 23-7/8-inch square grates shall be 8-
inches in height and 460 pounds minimum. They shall be Neenah Foundry Co. No. 3405;
Quality Water Products No. 45; E.L. LeBaron Type F; or approved equal.

J.

2.02

A.

2.03

B.

unit shall be tagged and removed from the job site immediately.

The Engineer may also require the testing of concrete sections as outlined under Physical
Requirements in ASTM C478 with the Contractor bearing all testing costs.

BRICK MATERIALS:

3. Sections shall be steam cured and shall not be shipped until at least five days after
having been cast.

4. Minimum compressive strength of concrete shall be 4000 psi at 28 days.
5. No more than two lft holes may be cast or drilled in each section.

6. The date of manufacture and the name or trademark of the manufacturer shall be
clearly marked on the inside of each precast section.

7. Acceptance of the sections will be on the basis of material tests and inspection of the
completed product.

x

ASTM C144 Aggregate for Masonry Mortar

ASTM C207 Hydrated Lime for Masonry Purposes
ASTM C478 Precast Reinforced Concrete Manhole Sections
ASTM C923 Specification for Resilient
Connectors Between Reinforced Concrete
Manhole Structures and Pipes
ASTM C1244 Standard Test Method for Concrete Sewer Manholes by the

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 RELATEDWORK:

A. Section 02300, EARTHWORK

B. Section 02745, PAVING

C. Section 03302, FIELD CONCRETE
1.03 SYSTEM DESCRIPTION:

3.02

The vertical clear distance between sewers and drains shall be no less than 18 inches unless
otherwise approved by the Engineer or specifically indicated on the drawings. In locations
where sewers will pass over or under existing drains, the Contractor shall plan the laying of the
pipeline such that the drain pipe 1s approximately centered between joints on the sewer pipe.

SECTION 02619

REPLACEMENT OF EXISTING DRAINS

PART 1 - GENERAL

1.01 WORK INCLUDED:

This section covers those areas of work where the proposed sewers will cross existing drain
pipes and structures.

SECTION 02534
FILL SEWER PIPE OR STRUCTURE (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
This 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

place. Should the Contractor elect to use this type of fitting the submittal must include
an evaluation of the existing pipe wall thickness (after CIPP lining) and provide cut
sheets from the manufacturer showing this type of fitting will achieve the desired
results.

PART 3 - EXECUTION

3.01

A.

B.

INSTALLATION:

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.

SECTION 02533
CONNECTIONS TO EXISTING STRUCTURES OR SEWER MAINS
PART | - 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.