Kent Design - Technical Appendix - Kent County Council

3. HIGHWAYS
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highways specification and construction
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3.1 GENERAL
3.1.1.1 GENERAL SPECIFICATION
All materials and workmanship shall be in accordance with the
appropriate British Standard Specification and Volume 1 of the
Highways Agency’s Manual of Contract Documents for Highway
Works, current at the time of completion of the appropriate Road
Agreement and where available all materials shall be kitemarked.
Amendments and additions to the Specification are included in this
Part but it will be necessary for the Developer to prepare certain
appendices relating to the particular site for approval by the Highway
Authority and incorporation into the Section 38 Agreement.
3.1.1.2 MATERIAL TYPES
Carriageways shall generally be constructed in hydraulic or bitumen
bound materials or block paving. Concrete construction with
Portland Cement binder will only be accepted where conditions
preclude these types of construction.
Footways shall generally be constructed in bituminous bound
materials, block paving or small element pavings. Paving slabs shall
only be used with the approval of the Engineer.
Materials specified herein are those commonly available locally.
However, alternative materials and techniques for road construction
not included within this Specification may become available. When
the developer wishes to use such a material or technique, he should
make a detailed proposal to the Engineer in good time to permit its
evaluation and approval prior to the relevant work proceeding.
Similarly, in areas of distinctive character, such as in close proximity to
a listed building or its setting, an Ancient Monument, (whether
scheduled or not), within a conservation area or its setting or adjacent
to any historically or architecturally interesting structure, where the
use of special materials will enhance the setting, these shall be
discussed with the local Planning Officer and agreed with the Engineer.
3.1.1.3 TESTS
Developers are advised to arrange with a laboratory approved by the
Highway Authority for such site tests and investigations as may be
required in advance of the design - for example:- CBR tests or stiffness
modulation for sub-grade and percolation tests for soakaways.
Developers shall ensure that the test results, materials source
approval and any necessary manufacturers' certificates are provided
for the Engineer. Information on approved suppliers and materials is
available from the Highway Authority.
Developers shall also make available, during the construction of the
highways such samples of materials as may be required for testing,
and where necessary, permit the Engineer to carry out in situ tests of
road materials and checks on finished construction to verify
compliance with the Specification.
They shall also provide such assistance and equipment as the Engineer
may require - such as chainmen, labourers, instruments or tools. The
cost of all such tests and assistance shall be borne by the Developer.
Any works considered suspect by the Engineer may require the
Developer to open up the works, take cores or dig up trial holes and
carry out tests at his own expense to determine the quality of the
works to the Engineer's satisfaction.
3.1.1.4 DEVELOPERS OFFICES, PARKING AREAS, ETC.
On larger sites the provision of an office together with toilet facilities
Kent
Design
for the Highway Authority’s inspection staff may be required at the
Developer's expense. The Developer shall provide adequate parking
within the development site to prevent obstruction of the public
highway by the vehicles of site employees and visitors.
3.1.1.5 TEMPORARY ACCESS TO THE SITE
No access to the site, other than that shown on the approved
drawing shall be provided without the Highway Authority’s previous
written approval.
3.1.1.6 NOTICE BOARDS AND SIGNING
Notice Boards must not be erected within visibility splays or affixed
to retained trees. Advertisement consent may be required from the
Planning Authority in some circumstances.
If the residential development involves the erection of over 30
bedrooms, the Highway Authority may consider there is a
demonstrable need to provide local direction signs to the Site. The
Developer must consult the Highway Unit concerning the provision
of local direction signs on the Highway.
3.1.1.7 INSPECTION AND SETTING OUT
The Engineer shall have freedom of access to the works, but his
presence or absence in no way absolves the Developer from his
responsibility of ensuring that the works are carried out in
accordance with the Specification. The Developer shall employ a
competent agent or foreman in charge of the work to ensure that
directions given from time to time by the Engineer are interpreted
properly and the appropriate action taken.
The Developer shall set out, mark and maintain until it is no longer
required, all reference information necessary for the setting out and
checking of the development.
Where setting out markers are likely to be disturbed during the
development, the Developer shall transfer such markers to an
adjacent point.
The setting out of the works may be checked by the Engineer before
construction proceeds. The Developer shall provide such assistance
as the Engineer may require, such as chainman, instruments, etc.
When the Developer requires an inspection for approval of any part
of the works, the Engineer shall be given at least 24 hours notice of
such requirements.
The Developer shall obtain the consent of the Engineer to all
Saturday and Sunday work which may be required in order that
arrangements may be made to inspect the work.
Any works carried out and/or covered up without approval will be
considered suspect and the Developer may be required to open up
the works, take cores or dig up trial holes at his own expense to
determine the quality of the work to the Engineer's satisfaction.
3.1.1.8 MATERIALS WITHIN THE HIGHWAY
The Developer will not be permitted to store materials, at any stage
of construction, within the highway limits or where the integrity of
the highway may be affected or over highway surface water drainage
systems. Also carriageways or footways needed for access to
occupied dwellings must not be obstructed.
3.1.1.9 PROTECTION OF EXISTING AND PROVISION OF NEW SERVICES
The Developer shall take all measures reasonably required by an