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

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

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/