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The Model Lighting Ordinance. James R. Benya, PE, FIES, IALD, LC BENYA LIGHTING DESIGN And The Benya Burnett Consultancy. History. Joint IDA/IES Task Force Formed First drafts circulated, lighting zones determined BUG invented, changes to TM15 proposed

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the model lighting ordinance

The Model Lighting Ordinance

James R. Benya, PE, FIES, IALD, LC

BENYA LIGHTING DESIGN

And

The Benya Burnett Consultancy

history
History
  • Joint IDA/IES Task Force Formed
  • First drafts circulated, lighting zones determined
  • BUG invented, changes to TM15 proposed
  • Changes to TM15, attempted reconciliation with LRC’s OSP
  • First Public Review
  • Second Public Review
  • Final Draft Approved by IDA and IES; work on performance method continues
basic concepts
Basic Concepts
  • Limit the total light in the environment to actual need by lighting zone
  • Prevent direct upward light radiation
  • Restrict light trespass onto adjacent properties
  • Reduce glare
lighting zones1
Lighting Zones
  • First used in California and Arizona to isolate observatories from sky glow of cities
  • Current international method developed by CIE and introduced in IES RP-33-99
  • Criteria in US
    • Impact on local environment
    • Ambient light level of local environment
    • Adaptation of the viewer
    • Expectation of light
    • Ability to make lighting operation dynamic
lighting zones2
Lighting Zones

LZ0: No ambient lighting

Areas where the natural environment will be seriously and adversely affected by lighting. Impacts include disturbing the biological cycles of flora and fauna and/or detracting from human enjoyment and appreciation of the natural environment. Human activity is subordinate in importance to nature.The vision of human residents and users is adapted to the darkness, and they expect to see little or no lighting. When not needed, lighting should be extinguished.

lighting zones3
Lighting Zones

LZ1: Low ambient lighting

Areas where lighting might adversely affect flora and fauna or disturb the character of the area. The vision of human residents and users is adapted to low light levels. Lighting may be used for safety and convenience but it is not necessarily uniform or continuous. After curfew, most lighting should be extinguished or reduced as activity levels decline.

lighting zones4
Lighting Zones

LZ2: Moderate ambient lighting

Areas of human activity where the vision of human residents and users is adapted to moderate light levels. Lighting may typically be used for safety and convenience but it is not necessarily uniform or continuous. After curfew, lighting may be extinguished or reduced as activity levels decline.

lighting zones5
Lighting Zones

LZ3: Moderately high ambient lighting

Areas of human activity where the vision of human residents and users is adapted to moderately high light levels. Lighting is generally desired for safety, security and/or convenience and it is often uniform and/or continuous. After curfew, lighting may be extinguished or reduced in most areas as activity levels decline.

lighting zones6
Lighting Zones

LZ4: High ambient lighting

Areas of human activity where the vision of human residents and users is adapted to high light levels. Lighting is generally considered necessary for safety, security and/or convenience and it is mostly uniform and/or continuous. After curfew, lighting may be extinguished or reduced in some areas as activity levels decline.

bug rating system
BUG Rating System

Backlight

Uplight

Glare

bug changes upcoming
BUG Changes Upcoming

Before

After

Uplight rating includes only uplight

Uplight rating included lower hemisphere VH values

bug thinking
BUG Thinking

100 w MH Type III FCO

B2 U0 G2

175 w MH Type III FCO

B3 U0 G3

bug thinking1
BUG Thinking

100 w MH Type III FCO

B2 U0 G2

100 w MH Type III FCO

Houseside Shield

B1 U0 G1

bug thinking2
BUG Thinking
  • Don’t use luminaires with uplight
  • To get lower ratings use smaller lumen packages
  • To get better B ratings, consider house side shields
  • Maximum source package for G4~40,000 lumens
  • High lumen packages only for special applications such as retail or sports lighting
decorative bug
Decorative BUG
  • Fully shielded bell, 150 watt HPS, B3 U0 G3
  • Drop teardrop refractor 110 w LED, B3 U3 G3
preamble
Preamble

The purpose of this Ordinance is to provide regulations for outdoor lighting that will:

a. Permit the use of outdoor lighting that does not exceed the minimum levels specified in IES recommended practices for night-time

safety, utility, security, productivity, enjoyment, and commerce.

preamble1
Preamble

The purpose of this Ordinance is to provide regulations for outdoor lighting that will:

b. Minimize adverse offsite impacts of lighting such as light trespass, and obtrusive light.

preamble2
Preamble

The purpose of this Ordinance is to provide regulations for outdoor lighting that will:

c. Curtail light pollution, reduce skyglow and improve the nighttime environment for astronomy.

preamble3
Preamble

The purpose of this Ordinance is to provide regulations for outdoor lighting that will:

d. Help protect the natural environment from the adverse effects of night lighting from gas or electric sources.

preamble4
Preamble

The purpose of this Ordinance is to provide regulations for outdoor lighting that will:

e. Conserve energy and resources to the greatest extent possible.

general requirements
General Requirements
  • Applicability
    • All outdoor lighting except roadway
    • Optional streetlighting section
  • Exemptions
    • Signs
    • Monuments, flag
    • Repairs
    • Underwater lighting
  • - Temporary Lighting
  • Emergency lighting
  • Low volt landscape lighting (LZ2-4)
general requirements1
General Requirements
  • Applicability
    • Special plans and government regulations take precedence
  • Controls
    • Automatic on/off
    • Reduced lighting after curfew
non residential lighting limits
Non-Residential Lighting Limits

Prescriptive Method

Performance Method

Off site impact is evaluated

Maximum off site impacts by LZ

Takes reflected light into account

Very similar to LRC’s OSP method

Designed to be computed using standard radiosity software

  • Lumens per unit area allowance based on need and LZ
  • Absolute photometry
  • Includes general lighting lumens and specific use “use it or lose it” lumens
  • Designed to match ASHRAE/IES 90.1 and may be interchangeable
residential lighting
Residential Lighting
  • Lumen limits per luminaire per lighting zone
  • All exterior lighting shielded except for one luminaire per domicile
  • Limits to floodlighting and landscape lighting include lumens and aiming
special situations and permits
Special Situations and Permits
  • High intensity lighting
    • Aerial lasers
    • Searchlights
  • Complex and Non-conforming Uses
    • Special activity and high light level uses
    • Special permitting process laid out
special permits for
Special permits for

1. Sports facilities, including but not limited to unconditioned rinks, open courts, fields, and stadiums.

2. Construction lighting.

3. Lighting for industrial sites having special requirements, such as petrochemical manufacturing or storage, shipping piers, etc.

4. Parking structures.

5. Urban parks

6. Ornamental and architectural lighting of bridges, public monuments, statuary and public buildings.

7. Theme and amusement parks.

8. Correctional facilities.

existing lighting
Existing Lighting
  • Amortization
  • New uses and structures
  • Abandonment and change of use
  • Additions and/or alterations
status
Status
  • Approved by IDA and IES Boards
  • Ready for review and beginning the adoption process
  • Final adjustments being made to BUG system and several related requirements to be approved by IDA and IES Boards
  • Suggested for International use to EU and Great Britain
status1
Status

Included in part in the following codes and standards (site lumen allowance dropped in favor of outdoor lighting power allowance) for

  • LEED 2012
  • CalGreen
  • ASHRAE/IES 189.1
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