Transcription of Road Tunnel Lighting Guide - nature-ic.am
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Road Tunnel Lighting Guide - nature-ic.am
road Tunnel Lighting Guide John Rands CEng MILP Yerevan, Armenia, 20 April 2016 Ministry of Nature Protection of RA Contents Overview road Tunnels - Overview Styles Of Tunnel Lighting Current Practice road Tunnel Lighting Design & Performance Short Tunnels Materials & Installation Summary Of Recommendations Risk Assessment 2 "Green Urban Lighting " UNDP-GEF/00074869 project Running Hours 3 "Green Urban Lighting " UNDP-GEF/00074869 project Initial Design Requirement Prior to embarking on a Lighting design or a Lighting design specification for a road Tunnel the following criteria will be required to be established: Structural details of the Tunnel . Design / speed limit of approach road (s). Stopping Distance (m) Tunnel Class based on: Traffic Flow Rate Traffic Mix Access Zone Luminance L20 (cd/m2) K factor value based on Tunnel Class & Speed Limit Threshold Zone Luminance based on L20 x K (cd/m2) To t a l Threshold Zone Length = Stopping distance (m) Interior Zone Luminance based on Tunnel Class & Speed Limit (cd/m2) Exit Zone Luminance = 5 x Interior Luminance (cd/m2) Exit Zone Length (m) road Sur
Initial Design Requirement . Prior to embarking on a lighting design or a lighting design specification for a road tunnel the following criteria will be required to be established:
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