highways <strong>Kent</strong> <strong>Design</strong>
3. HIGHWAYS 3 highways specification and construction 48 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 <strong>Kent</strong> <strong>Design</strong> 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
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