APE
ROUND 2
LET’S BUILD OUR NEW FUTURE
ELECTRICAL TEAM
STREET LIGHTING
R10 R9
R8
ELECTRICAL DEPARTMENT
I am (Ahmed Reda)
Postion: Senior Electrical Engineer
ELECTRICAL DEPARTMENT
Table of Contents
1. Introduction to street lighting.
2. Types of lamps.
3. Types of poles.
4. Mounting methods.
5. Factors affecting street lighting design.
6. Street lighting design requirements.
7. Case study from a real project.
8. Example using DIALux (Step-by-step).
9. Feeder Pillar.
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1. Introduction to street lighting :
The street light is a raised source of light on the edge of a road or
path. Modern lamps may also have light-sensitive photocells that
activate automatically when light is not needed.
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1. Introduction to street lighting :
Codes and standards for street lighting design :
- BS (British Standard) 5489
- CIE (Commission Internationale De l’Eclairage)
- IESNA (Illuminating Engineering Society of North America)
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2. Types of lamps :
Lamps
Sodium LED
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2. Types of lamps :
Sodium Lamp :
Advantages:
High efficacy
Low power Consumption
Low Consumption Cost
Disadvantages:
Low Rendering Index
Not used in petroleum sites
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2. Types of lamps :
LED Lamp :
Advantages:
1-Low operating cost
2-High Color rendering
3-Long life time
4- Reduced glare
5-Instant switching
Disadvantages:
1-High initial cost
2-visual discomfort for higher luminance level
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3. Types of poles :
Poles
Normal High mast
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3. Types of poles :
Normal: High mast:
- (4-12) Meters - More than 20 Meters
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4. Mounting methods:
Poles
Post Top Post Side
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4. Mounting methods:
Post Top Post side
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5. Factors affecting street lighting design :
1-Mounting height.
2-Over hang.
3-Boom angle.
4-Boom length.
5-Luminaire type.
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5. Factors affecting street lighting design (cont.) :
6-Distance between poles (S).
7-Arrangements:
7.1.Single row (One sided)
7.2. Opposite (Two Sided opposite)
7.3. Staggered (Two Sided staggered)
7.4.Twin central ( Double Davit Median)
7.5.Twin central + opposite ( Double Davit opposite)
7.6.Twin central + staggered ( Double Davit staggered)
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7.1.Single row (One sided) 7.2. Opposite (Two Sided opposite) 7.3. Staggered (Two Sided staggered)
7.5.Twin central + opposite ( Double 7.6.Twin central + staggered
7.4.Twin central ( Double Davit Median)
Davit opposite) ( Double Davit staggered)
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5. Factors affecting street lighting design (cont.) :
8- Maintenance factor :
- Can be taken as 0.7 for outdoor conditions.
- Can be obtained from the following table in
BS 5489
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5. Factors affecting street lighting design (cont.) :
9 - Road Coating (Asphalt),
Depends on Coating
(R1, R2, R3, R4)
IN EGYPT, It is considered as R3
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6. Street lighting design requirements:
1- Average illuminance. (L)
2- Over all uniformity. (U0)
3- Longitudinal uniformity. (U1)
4- Threshold increment. (T1)
5- Surrounding ratio. (SR)
- These requirements depend on Road type.
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6. Street lighting design requirements:
1- Average illuminance. (L)
> Luminance of the road surface averaged over the carriage way.
2- Over all uniformity. (U0)
> Ratio of the lowest to the average = Emin/Eav.
3- Longitudinal uniformity. (U1)
> Lowest of the longitudinal uniformities of the driving lanes of the
carriage way = Emin/Emax.
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6. Street lighting design requirements:
4 – Threshold increment
Measure of the loss of visibility caused by disability glare of the luminaire of the road
lighting installation.
Threshold increment is too high Threshold increment is correct
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6. Street lighting design requirements:
5 – Surrounding ratio SR = E2/E1
( Average illuminance outside / Average illuminance inside )
- Typical value : SR > 0.5
-Illuminance calcualtion at 5 meters strips left and right from
the kerb.
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For curved street extra luminance is required :
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7.Case study from a real project :
Beit El Wattan-District(8)
Master plan
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7.Case study from a real project :
Street lighting feeder pillar
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7.Case study from a real project :
Road crossing
(Duct bank)
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8. Example using DIALux :
Steps of street lighting design using DIALux :
1- Collecting road information
2- Edit street in DIALux
3- selection of luminaire
4- luminaire arrangement and parameters
5- calculation and simulation for results
6- export the output results
7- implement the design on drawing (CAD Xref)
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8. Example using DIALux :
Open the program and choose New Street project
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8. Example using DIALux :
Plan view for the street
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8. Example using DIALux :
Change the maintenance factor
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8. Example using DIALux :
Create the street (Roadway , median, side walk , …)
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8. Example using DIALux :
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8. Example using DIALux :
Street arrangement
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8. Example using DIALux :
Editing the street factors
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8. Example using DIALux :
Editing the street factors
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8. Example using DIALux :
Editing the street factors
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8. Example using DIALux :
Choose the luminare from catalogs
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8. Example using DIALux :
Choose outdoor for luminaires
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8. Example using DIALux :
Choose the suitable luminaire
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8. Example using DIALux :
Insert the street arrangement
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8. Example using DIALux :
Pick the luminaire added in the library
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8. Example using DIALux :
Default factors to be modified
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8. Example using DIALux :
Factors of your design to be considered
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8. Example using DIALux :
Street arrangement
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8. Example using DIALux :
Press insert
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8. Example using DIALux :
Start the first iteration for the results
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8. Example using DIALux :
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8. Example using DIALux :
3D simulation
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8. Example using DIALux :
Output results of calculations
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8. Example using DIALux :
Double Click on photometric results
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8. Example using DIALux :
Check calculation fields of roadways
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8. Example using DIALux :
Check calculation fields of sidewalks
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8. Example using DIALux :
Another exercise
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8. Example using DIALux :
Changing the arrangement to be opposite
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8. Example using DIALux :
Single luminaire at each pole
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8. Example using DIALux :
After running the calculation …
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8. Example using DIALux :
Check calculation fields of roadways
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8. Example using DIALux :
Check calculation fields of sidewalks
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8. Example using DIALux :
Changing a factor to solve the previous problem in results
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8. Example using DIALux :
Check calculation fields of sidewalks
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9. Street lighting feeder pillar:
• Responsible for feeding street lighting circuits
• Contains three phase breakers connected on 4 core cable to feed poles
• Contains a photocell / Timer
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9. Street lighting feeder pillar:
ELECTRICAL DEPARTMENT
COPYRIGHT NOTICE
Feel free to use these presentation for your personal learning and educational needs.
DON‘T
• Resell or distribute the presentation or backgrounds.
• Make these templates available on a website or social network for
download.
• Edit or modify the downloaded templates and claim /
pass off as your own work.
ANY QUESTIONS?
You can find me at
ahmed.mreda@ecgsa.com
Mob. : 010 979 097 85
Or coordinate with UTW Team
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