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Lighting/Utilities

Lighting/Utilities. HDM Ch. 12/13. Goal:. Safe, energy efficient, economical lighting system which will produce the desired visibility. Design Steps. Locate all utilities (overhead/underground) Planimetrics (base mapping) Survey Utility companies As-builts

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Lighting/Utilities

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  1. Lighting/Utilities HDM Ch. 12/13

  2. Goal: Safe, energy efficient, economical lighting system which will produce the desired visibility

  3. Design 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

  4. Lighting • 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

  5. Equipment • 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)

  6. Typical • High pressure sodium (HPS) • Common combinations: • 150W / 9m height • 250W / 12m height • 400W / 12-15m height

  7. Luminaire Spacing • Design guides: • Outdoor Illumination Recommendations • Roadway Lighting Quick Selector http://www.gelightingsolutions.com/ • Computer Software • Equations; see HDM

  8. Handout 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”

  9. Example • 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

  10. Collector (high ped conflict): Avg Luminance: 0.8 Uniformity Ratio (Lavg/Lmin=3)

  11. 3:1 (or less)----Spacing less than 75’ (Controls) & 0.8 fc (or more)----Any spacing will work

  12. Electrical • 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)

  13. Lighting Report • Light source type • Size/mounting height • Luminaire type and location • Luminaire spacing and arrangement • Power supply point • Hardware • Calculations/computer printouts

  14. Lighting 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

  15. Lighting 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

  16. Miscellaneous • 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

  17. Special 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

  18. Utilities-Definition: Privately, publicly, or cooperatively owned lines, facilities, or systems for producing transmitting or distributing:

  19. Utilities • Communications, Power, Electricity • Light, Street Lighting Heat • Gas, Oil, Crude Products • Heat, Steam • Water, Stormwater, Wastes • Fire/Police Signal Systems

  20. Utilities • It is in the public interest to accommodate utilities on state ROW

  21. General 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

  22. Controlled Access • Usually no utilities except right-angle crossings • Crossings are usually encased

  23. Non-Controlled Access • Install utilities close to ROW and outside of curb line/ditch line

  24. Responsibility • 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

  25. Dig Safely NY • http://www.digsafelynewyork.com/

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