(B) Facade Lighting:
- Normally Facade Lighting are used to illuminate Building area from Outer Side.
- There are three factor should be consider while designing of outdoor Facade Lighting.
- Setback
- Spacing
- Aiming
1) Setback:
- The recommended setback should be 3/4 times the building height.
- If a building is 10 Meter tall, the recommended setback is 7.5 Meter from the building.
- If the locating the floodlight closer to the building will sacrifice uniformity and If setting it further back will result in loss of efficiency.
- Setback distance = 3/4 x Building height
- Setback distance =3/4 x (10 Meter) = 7.5 Meter
2) Spacing:
- Spacing of floodlights should not be exceeding two times the setback distance.
- If the setback is 7.5 Meter the floodlights should not be placed more than 15 Meter apart.
- Spacing = 2 x setback distance
- Spacing=2 x 5 = 15 Meter
3) Aiming:
- The floodlight should be aimed at least 2/3 the height of the building.
- If a building is 10 Meter high, the recommended aiming point is approximately 6.6 Meter high.
- After installation aiming can be adjusted to produce the best fine appearance.
- Aiming Point = 2/3 x Building Height.
- Aiming Point =2/3 (10 Meter) = 6.6 Meter high
(C) Sinage Lighting:
- Normally Sinage Lighting are used to illuminate Sinage Board either Floor Mounted or Pole Mounted
- There are three factor should be consider while designing of Sinage Board Lighting.
- Setback
- Spacing
- Aiming
1) Setback:
- When using floodlights to light a sinage, the setback should be 3/4 the sign height
- If the sinage height is 18 Meter then the setback distance would be 13.5 Meter.
- If the floodlight closer to sinage will sacrifice uniformity while setting it further back will in a loss of efficiency.
- Setback distance = 3/4 x sinage height
- Setback distance =3/4 (18 Meter) = 13.5 Meter.
2) Spacing:
- The spacing floodlights should not be exceed two times the setback distance.
- If the setback is 13.5 Meter, the floodlights should not be placed more than 27 Meter apart.
- Spacing = 2 x setback distance.
- Spacing = 2 x 5 (Meter) = 27 Meter.
3) Aiming:
- The floodlight should be aimed at least 2/3 up the sign.
- If a sign is 18 Meter tall, then the floodlight should be aimed approximately 12 Meter high.
- Aiming can be adjusted to produce the best appearance.
- Mounting a full or upper visor to the floodlight can reduce unwanted glare.
- Aiming point = 2/3 x sign height
- Aiming point =2/3 (18 Meter) = 12 Meter high
Street Light Pole Height & Spacing (as per CPWD):
- There are four type of Street Light Pole arrangement.
- One side Type.
- Staggered Type.
- Opposite Type.
- Central Type.
- As per CPWD we can calculate Pole Height and Spacing as per under
(1) One side Street Light Pole arrangement.
- Pole Height = Width of Road.
- Pole Spacing = 3 to 4 Times Height of Pole.
- If the Road width is 8 Meter than
- Pole Height=8 Meter
- Pole Spacing =24 to 32 Meter.
(2) Staggered Type Street Light Pole arrangement.
- Pole Height = 0.8 time Width of Road.
- Pole Spacing = 3 to 4 Times Height of Pole.
- If the Road width is 8 Meter than
- Pole Height=6.4 Meter
- Pole Spacing =24 to 32 Meter.
(3) Opposite side Street Light Pole arrangement.
- Pole Height = 0.5 time Width of Road.
- Pole Spacing = 3 to 4 Times Height of Pole.
- If the Road width is 8 Meter than
- Pole Height=6.4 Meter
- Pole Spacing =24 to 32 Meter.
(4) Central Street Light Pole arrangement.
- Pole Height = 0.8 time Width of Road.
- Pole Spacing = 3 to 4 Times Height of Pole.
- If the Road width is 8 Meter than
- Pole Height=4 Meter
- Pole Spacing =24 to 32 Meter.
November 02, 2017 at 08:46PM
