1 Lighting/Utilities HDM Ch. 12/13. 2 Goal: Safe, energy efficient, economical lighting system which...
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Transcript of 1 Lighting/Utilities HDM Ch. 12/13. 2 Goal: Safe, energy efficient, economical lighting system which...
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Lighting/UtilitiesLighting/Utilities
HDM Ch. 12/13HDM Ch. 12/13
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Goal:Goal:
Safe, energy efficient, economical Safe, energy efficient, economical lighting system which will produce lighting system which will produce
the desired visibilitythe desired visibility
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Design StepsDesign Steps
• Locate all utilities (overhead/underground)– Planimetrics (base mapping)– Survey– Utility companies– As-builts
• Plot utilities on plans, cross-sections & profiles• Incorporate utility locations in design• Send prel. plans to utilities (conflicts)• Utilities will show proposed relocations• Incorporate all utility info in PS&E• Make sure all utility resolutions and agreements are initiated early
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LightingLighting
• Local municipality assumes O&M cost/responsibility
• Design elements– Light source (lamp)– Luminaire (lamp& reflector) type and position– Mounting Height– Pole offset from traveled way– Electrical design
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EquipmentEquipment
• Luminaire (lamp & reflector/refractor)• Luminaire Support)
– Arm (single arm; truss; davit) (
– Pole (aluminum, wood, fiberglass)– Base (breakaway, anchor, direct-embedment)– Foundation
• CIP/precast or direct embedment (check soils)
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Typical Typical
• High pressure sodium (HPS)
• Common combinations:– 150W / 9m height– 250W / 12m height– 400W / 12-15m height
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Luminaire SpacingLuminaire Spacing
• Design guides:– Outdoor Illumination Recommendations– Roadway Lighting Quick Selector
http://www.gelightingsolutions.com/
• Computer Software
• Equations; see HDM
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Handout Design GuidesHandout Design Guides
• Determine minimum average fcs – fcs (avg foot-candles @ end of lamp life)– Higher numbers mean more light
• Determine uniformity ratio– (avg/min uniformity)– Defines quality of illumination– Better to have low #’s
• Determine spacing from “Roadway Lighting Quick Selector”
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ExampleExample• 4-lane, collector, commercial (ped conflict
high)• GE M-400 Prismatic Luminaire• 40 ft mount ht; 4-ft overhand• 400W HPS• Answer
– FCS: 0.8 (or greater)– Ratio: 3:1 (or less)– Spacing: approx. 75 feet
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Collector (high ped conflict):Avg Luminance: 0.8Uniformity Ratio (Lavg/Lmin=3)
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3:1 (or less)----Spacing less than 75’ (Controls) & 0.8 fc (or more)----Any spacing will work
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ElectricalElectrical
• Electrical distribution (connection to utility poles)
• Wiring (size/type)
• Conduit (galv steel or PVC)
• Pullboxes (CIP/precast)
• Junction Box (one for each luminaire)
• Photoelectric control (individual or central)
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Lighting ReportLighting Report
• Light source type
• Size/mounting height
• Luminaire type and location
• Luminaire spacing and arrangement
• Power supply point
• Hardware
• Calculations/computer printouts
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Lighting Plans & Specs-1/2Lighting Plans & Specs-1/2
• Roadway lighting plan– EP,ES, Edge of Curb– Luminaire supports and spacing– Other facilities (conduit, cables, jacking, pole numbering, controller, power supply, and pullboxes)
• Table of luminaire installation– Luminaire # (correlates to plan)– Location by station– Lateral offset– Foundation elevation– Foundation type– Pole type– Luminaire type and lamp size, voltage requirements– Luminaire mounting height
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Lighting Plans & Specs-2/2Lighting Plans & Specs-2/2
• Wiring details– Circuit wiring– Transformer, base wiring– Controller wiring
• Pole foundation details– Special installation details for cut/fill– Dimensional requirements for foundation/conduit placement
• Pole details (general configuration)
• Misc. details– Limits of clearing and grubbing
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MiscellaneousMiscellaneous
• Exit ramps---Poles should be located approximately 50m away from the gore area (to avoid being hit)
• Bridge lighting—Locate poles approx. 25 m to provide light under the bridge (if bridge does not have under-bridge lighting)
• Signs-poles should be placed >15 m in front of lighted signs or >10m in front of unlighted signs
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Special LightingSpecial Lighting
• High Mast (interchanges/rest stops)
– Increased safety/visibility– Light “spillover”– Municipality responsible for O&M
• Ornamental/Decorative– Considered a betterment and local
municipality must pay add’l costs
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Utilities-Definition:Utilities-Definition:
Privately, publicly, or cooperatively Privately, publicly, or cooperatively owned lines, facilities, or systems owned lines, facilities, or systems
for producing transmitting or for producing transmitting or distributing:distributing:
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UtilitiesUtilities
• Communications, Power, Electricity
• Light, Street Lighting Heat
• Gas, Oil, Crude Products
• Heat, Steam
• Water, Stormwater, Wastes
• Fire/Police Signal Systems
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UtilitiesUtilities
• It is in the public interest to accommodate utilities on state ROW
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General Design StepsGeneral Design Steps
• Locate all utilities (ovh/ugd)• Plot utilities on plans/cross-sections/profiles• Incorporate utilities in design• Send preliminary plans to utilities• Incorporate all comments and resolve problem
areas• Make sure all utility resolutions/agreements are
initiated early
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Controlled AccessControlled Access
• Usually no utilities except right-angle crossings
• Crossings are usually encased
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Non-Controlled AccessNon-Controlled Access
• Install utilities close to ROW and outside of curb line/ditch line
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ResponsibilityResponsibility
• Private Utilities– If w/in state ROW, utility owner must pay– If outside ROW, state will pay
• Municipal Utilities– Reimbursable if relocation required due to
construction– Some utilities might be considered a betterment and
municipality might have to pay incremental costs
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Dig Safely NYDig Safely NY
• http://www.digsafelynewyork.com/