DESIGN STANDARDS FOR INDUSTRIAL ROADS

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DESIGN STANDARDS FORINDUSTRIAL ROADS

1DESIGN STANDARDS FOR INDUSTRIAL ROADSIntroductionAlthough the general principles and advice given elsewhere inNational Guidance apply equally to Industrial Roads the layoutof these roads has a different emphasis from that of ResidentialRoads. In order to cater for the larger and heavier vehicles theroads need to be of greater width and strength. The DesignStandards to cater for this traffic are set out in this Section.

1DESIGN STANDARDS FOR INDUSTRIAL ROADS1.1 Design Standards1.1.0 Industrial Estate Roads have been categorised as follows:i.ii.Major Industrial Roads (Major IR)Minor Industrial Roads (Minor IR)In general only culs-de-sac of less than 200m in lengthshould be considered as Minor Industrial Roads with allothers being Major Industrial Roads. It is not essential to useboth Categories in any one development.1.1.1 Details of design are summarised in Table 1. These shouldbe read in conjunction with the following notes:i.Forward Visibility is measured on the centre line ofthe carriageway (see also Clause 1.1.2)ii.On Major Industrial Roads where the gradient isgreater than 6% (1 in 16.7) an increased carriagewaywidth may be required. (See also Clause 1.1.4)iii.Footways must be provided on both sides of thecarriageway; the width of 2m may need to beincreased to 3m in certain cases to cater for heavierpedestrian flows and shared cycle use.iv.Increased carriageway width may also be required onsharp bends to enable larger vehicles to pass eachother.1.1.2 Visibility splays within Industrial Estates are to be providedat all junctions as shown in Table 3. Where a new estate roadjoins the existing wider highway network visibility will berequired to be in accordance with National Guidance.

1DESIGN STANDARDS FOR INDUSTRIAL ROADSVisibility on curves, at summits and at junctions shall beprovided between points 1.05m above the carriageway. (Seealso clause 1.1.1 (i).)1.1.3 A Turning space shall be provided at the end of each culde-sac. This turning space must be in accordance with one ofthe diagrams shown in Figure 1.The positioning of accesses to individual premises withturning spaces is recommended as this discourages casualparking which obstructs turning movements.1.1.4 The gradients of carriageways shall normally not exceed thefollowing limits:Maximum gradientMinimum gradient8.33%0.83%(1 in 12)(1 in 120)In exceptional cases steeper gradients may be approved bythe Engineer. Where the channel is formed of pre-castconcrete or other suitable channel blocks, the gradient shallnot be less than 0.66% (1 in 150).(See also Clause 1.1.1)1.1.5 Culs-de-sac over 200m in length are undesirable but willbe considered in certain circumstances (eg, to avoidsterilisation of land) up to a maximum of 400m in lengthbeyond which a second access to the existing highwaynetwork should be provided. Where the 200m maximumlength is exceeded intermediate turning facilities must beprovided in accordance with clause 1.1.3 at a maximumspacing of 200m.1.1.6 Where an Industrial Estate Road joins an existing DistributorRoad, offside diverging (right turn) lanes may be required tobe provided by the Developer, together with associatedtraffic signs, central refuges and road markings. Undernormal circumstances offside diverging lanes will berequired at all junctions between Distributor Roads andMajor Industrial Roads. Details of Pedestrian facilities mayalso be required to be agreed with the Engineer, based on the

1DESIGN STANDARDS FOR INDUSTRIAL ROADSlatest Department of Transport advice.1.1.7 The use of roundabout/mini-roundabout junctions will beconsidered where appropriate.1.1.8 Carriageway construction thickness shall be in accordancewith Table 2. (See also Figure 3).1.1.9 On Industrial Estates footway construction shall be inaccordance with Table 2. (See also Figure 3).1.1.10 The layout of these premises shall be such that all vehiclescan leave and regain the public highway in a forwarddirection.1.1.11 For access to premises radius kerbs (normally 6.0 metres)should be provided. The width of accesses to premises willdepend on the size and nature of the premises but should notbe less than 6.0m. In addition an area of footway of 2m longon each side of the access shall be constructed tocarriageway standards to reduce the effects of vehiclesmounting the kerb (see Figure 2).1.1.12 All necessary provision for vehicular parking, includingdeliveries, should be clear of the public highway. In generalparking to serve premises is not acceptable on the highwayand the Developer will be expected to meet the full costs ofTraffic Regulation Orders, signs and road markings requiredto enable waiting restrictions to be implemented, whereappropriate. General off-street parking provision shall be inaccordance with the standards set out in the current editionof “Standards for Parking and Servicing for Developments”produced by East Sussex County Council.

1 DESIGN STANDARDS FOR INDUSTRIAL ROADS 1.1 Design Standards 1.1.0 Industrial Estate Roads have been categorised as follows: i. Major Industrial Roads (Major IR) ii. Minor Industrial Roads (Minor IR) In general only culs-de-sac of less than 200m in length should be considered as Minor Industrial Roads with all others being Major Industrial Roads.

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