Specification for vehicle crossings Heavy and Domestic

HIGHWAYS ACT 1980 - SECTION 184 VEHICLE CROSSING OF A FOOTWAY OR VERGE

SPECIFICATION

1. GENERAL

a. Minimum entrance width to be 2.5m, if it is intended to provide gates then they should open inwards. If surfacing material of drive and footway are similar then a boundary demarcation line, e.g. footway edgings must be incorporated

b. Maximum gradient of crossing between the carriageway and the entrance to be 1:12.

c. If necessary, drainage must be provided to prevent surface water from the drive flowing on to the public highway.

d. Construction materials to be chosen to match the existing adjacent footpath and kerbing unless otherwise agreed by the Streetcare Officer.

2. LIGHT DUTY CROSSING, suitable for access to a single residential property for cars and light vans.

Bituminous Surface

• 40mm thick DBM surface course or 20 to 30mm 6mm SMA
• 60mm thick DBM binder course
• 150mm thick Type 1 sub-base

3. HEAVY DUTY CROSSINGS suitable for access to multiple dwellings and commercial property for heavy goods vehicles in excess of 1.5 Tonnes unladen weight.

Bituminous Surface

• 20mm thick Medium grade surface course
• 70mm thick Dense heavy duty and high modulus macadam binder course
• 100mm thick Dense heavy duty and high modulus macadam base
• 150mm thick Type 1 sub-base material to clause 803 SHW

Concrete surface

• 150mm thick CBM3 concrete to clause 1038 SHW
• 150mm thick Type 1 sub-base material to clause 803 SHW

Rural Crossover (Agricultural Access)

• 170mm thick unreinforced air-entrained concrete C40 to BS 5328
• 150mm thick Type 1 sub-base material to clause 803 SHW

Concrete Slab

• 235mm thick concrete Grade C30P with A193 mesh reinforcement to BS4483 in top and bottom of slab
• Waterproof membrane
• 265mm thick Type 1 sub-base

In cases where any crossing is required at an access to industrial works, petrol filling station, or other premises attracting heavy traffic, the specification to be employed shall be specifically designed for the site conditions.

4. CROSSINGS OVER HIGHWAY MARGINS AND VERGES

• A crossing of a verge should be edged with 50 x 150mm precast concrete edgings.
• The existing margin or verge shall be excavated to the formation level required and the whole excavation area sprayed with an approved total weed killer.

5. KERBS AND EDGING

• New bull-nosed kerbs shall be provided across the width of the access, with purpose-made taper kerbs forming the extremities.
• The kerbs shall be laid on, and backed with, 150mm (6') of 6:3:1 mix concrete to within 50mm of the top of the kerb.
• The kerbs shall be laid in such a manner as to conform with the width of the access, to be flush with finished access surface level.
• Dropped kerbs to have an upstand of 12mm (maximum of 20mm or 1¼') adjacent to the carriageway channel.
• Dropper kerbs to be used to taper into existing kerbing, maximum slope 1:20 if the footway is adjacent to the carriageway or 1:10 if there is a verge adjacent.
• If the kerb radius is less than 12m then the appropriate radius kerbs should be used.
• The kerbs forming the extremities of the access shall be laid so as to conform in level and alignment with the existing highway kerbs and suitably ramped to meet the access level.
• Edgings to be laid on 125mm concrete base with 75mm thick surround front and back to within 50mm of the top of the edging.

6. TYPICAL LAYOUT

7. PIPING OF A DITCH UNDER VEHICULAR ACCESS CROSSING

Where the access crosses a roadside ditch, this shall be piped with (glazed stoneware/concrete) pipes on a carefully prepared bed, free of large stones, which shall conform to the gradient of the existing ditch. The pipes shall be properly jointed with 1:4 cement mortar and laid on, and surrounded with 150mm (6') concrete (6:3:1 mix). The pipes shall project 1 metre (3'0') on each side of the entrance and shall be laid to approved levels and appropriate headwalls shall be provided. In no case shall a pipe of less than 225mm diameter be used. The work shall not be commenced until the levels have been determined and pipes must not be covered until they have been inspected and approved by the Streetcare Manager (or his representative). For details of size of pipe, level and gradients, contact Streetcare Services before any works commence, as the work involved may include a regrading of the ditch on each side of the access. All of the above requirements shall also be carried out in cases where drainage pipes are already located under the crossing.

8. MATERIALS AND WORKMANSHIP

All materials shall conform to the appropriate British Standard and to the DETR's current Specification for Road and Bridgeworks and the workmanship shall be to the satisfaction of to the Streetcare Manager (or his representative), whose decision in every case, shall be final and binding.

9. MAINTENANCE PERIOD

Upon completion of the works, the owner shall, for a period of 24 months, be responsible for the rectification of any constructional faults which may appear.

You should ensure that your contractor informs us of their proposed start and finish dates so we can carry out the relevant inspections. If this does not occur we may not be able to approve the work and register the works for guarantee

How do you rate this information/service?