B. Instant developing of standard size digital photographs of the television monitor at problem
areas shall be taken by the Contractor on the request of the Engineer, so long as such
photographing does not interfere with the Contractor's operations.
3.02
3.03
A.
3.05
A,
ROOT CUTTING:
The Contractor shall use mechanically powered equipment designed to cut roots in
pipelines.. Selection of equipment shall be based upon field conditions such as access to
manholes, quantity and size of roots, size of sewer, depth of flow, etc.
All debris material resulting from the root cutting operation shall be decanted and disposed of
at the City landfill, and in a method acceptable to the Engineer. All root cutting shall be
performed in advance of pipe television inspection.
1. Qualifications of the firm/personnel who will perform the work;
2. Description of system proposed for handling existing flows during the various
procedures to be carried out;
3. Description of the system and equipment proposed for cleaning;
4. Description of the system and equipment proposed for root cutting; and
5. Description of the system and equipment proposed for televising the pipe after
cleaning.
PART2-PRODUCTS
2.01
A,
B.
SECTION 02441
CLEANING, ROOT CUTTING, AND TELEVISION INSPECTION OF PIPELINES
PART 1 - GENERAL
1.01
A.
1.02
Uo w >
1.03
1.04
WORK INCLUDED:
The Contractor shall furnish all materials, tools, labor and equipment necessary to clean the
pipeline of debris, perform root cutting and visually inspect by means of a closed-circuit
television (CCTV) all sewers to be lined (CIPP) under this Contract, as hereinafter
specified. The sewers shall be inspected throughout their entire length.
RELATED WORK:
water jetting taking place.
c. Compaction of backfill placed by water jetting shall conform to the
requirements of this specification.
6. If the materials above the trench bottom are unsuitable for backfill, the
Contractor shall furnish and place backfill materials meeting the requirements
for trench backfill, as shown on the drawings or specified herein.
7. Should the Engineer order crushed stone for utility supports or for other
purposes, the Contractor shall furnish and install the crushed stone as directed.
by benching into the slope.
If the material removed from the excavation is suitable for backfill with the
exception that it contains stones larger than permitted, the Contractor has the
option to remove the oversized stones and use the material for backfill or to
provide replacement backfill at no additional cost to the Owner.
D. EXCAVATION NEAR EXISTING STRUCTURES:
1.
Attention is directed to the fact that there are pipes, manholes, drains, and
other utilities in certain locations. An attempt has been made to locate all
utilities on the drawings, but the completeness or accuracy of the given
information is not guaranteed.
directed by the Engineer, areas where unsuitable materials have been
excavated to stable ground shall be backfilled with compacted special bedding
materials or crushed stone wrapped all around in non-woven filter fabric.
B. TRENCHES:
1.
DURING CONSTRUCTION:
A. Contractor shall take the necessary steps to avoid disturbance of sub-grade during
excavation and filling operations, including restricting the use of certain types of
construction equipment and their movement over sensitive or unstable materials,
dewatering and other acceptable contro] measures.
sand essentially free of organic matter, plastic fines (clay) and debris, and shall
meet the gradation requirements below:
Sieve Opening Percent Passing (weight)
6 inch 100
No 4 25 - 70
No 200 0-12
B. CRUSHED GRAVEL:
The Gravel Road Base will be NHDOT - Item 304.3 Crushed Gravel, or Item
304.4 Crushed Stone (Fine Gradation).
C. BACKFILL MATERIALS:
1. Class B Backfill:
