18. Specification for Fire Brigade Access

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Technical Guidance Note 18: Specification for Fire Brigade Access Roads

Construction Details:-

Wearing Course

Depth 40mm constructed from either: -

• Hot rolled asphalt wearing course to BS594 Part1. 30/14 Recipe Type F Mix, 50 pen (2 to 8 stability) or;
  
  
• Close graded wearing course macadam to BS4987 Part1. 10mm size dense, 100 pen or;
  
  
• Dense wearing course macadam to BS4987 Part 1. 6mm size dense, 100 pen.

Base Course

Depth 60mm constructed from either: -

• Hot rolled asphalt base course to BS594 Part 1. 50/20 mix, 100 pen or;
  
  
• Dense macadam base course to BS4987 Part 1. 20mm size dense, 100 pen.

Road Base

Depth 150mm constructed from:-

• Granular Sub_base Material Type 1 to DTLR 'Specification for Highway Works' Clause 803
  
  
  • Concrete alternative. C40 concrete slab, minimum 150mm thick, laid in bays not exceeding 20m2 with maximum bay length not exceeding 6m, on Granular Sub-base Material  Type 1 to DTLR 'Specification for Highway Works' Clause 803, minimum 150mm thick on prepared sub-base.
    
    
  • Block Paving alternative. 80mm Pre-cast Concrete Block  Paving to BS6717 Part 1, on 50mm compacted grade C sharp sand to BS882, on Granular Sub-base Material  Type 1 to DTLR 'Specification for Highway Works' Clause 803, minimum 150mm thick on prepared sub-base

Please note that this specification is for guidance only. Alternative specifications may be acceptable  subject to supporting evidence.

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