Cart
0
Product
Products
(empty)
No products
To be determined
Shipping
$0.00
Total
Product successfully added to your shopping cart
Quantity
Total
There are 0 items in your cart.
There is 1 item in your cart.
Total products
Total shipping
To be determined
Total
Reduced price!
View larger
View larger
More info
Description / Abstract:
INTRODUCTION
This Standard Practice has the objective of providing information to assist engineers and designers in determining lighting needs, recommending solutions, and evaluating resulting visibility at vehicular tunnel approaches and interiors. This Practice is intended also for use by administrators charged with the responsibility of providing a safe visual environment within a tunnel both day and night.
The Standard Practice deals entirely with lighting and associated systems and does not give advice on construction practice. It is neither intended as, nor does it establish a legal standard for tunnel lighting systems. Its purpose is to provide recommended practices for designing new tunnel lighting systems and it is not intended to be applied to existing lighting systems until such systems are redesigned. It has been prepared to advance the art, science, and practice of illumination as it pertains to tunnel lighting in North America.
Treatment of tunnel portals, wall and ceiling surfaces, and selection of lighting equipment, as well as light sources, maintenance and lighting economics are also reviewed and assessed. However, special requirements for pedestrians are not addressed in this document. For pedestrian and underpass lighting refer to ANSI/IESNA RP-8, American National Standard Practice for Roadway Lighting.
The emphasis on providing electric or daylighting in vehicular tunnels enables a motorist to maintain speed and safely navigate. The basic design criteria for tunnel lighting are outlined in Section 6.0. Tunnels may require considerably different treatment of the threshold zone luminance values, depending on variables such as geographic orientation, geometric design, traffic volume, traffic speed, service levels, light sources used, and modes of light application. The lighting designer, therefore, should consider the factors which affect the visibility conditions as outlined in Sections 3.0, 4.0, 5.0, 7.0, and 8.0.
This Standard Practice has the objective of providing information to assist engineers and designers in determining lighting needs, recommending solutions, and evaluating resulting visibility at vehicular tunnel approaches and interiors. This Practice is intended also for use by administrators charged with the responsibility of providing a safe visual environment within a tunnel both day and night.
The Standard Practice deals entirely with lighting and associated systems and does not give advice on construction practice. It is neither intended as, nor does it establish a legal standard for tunnel lighting systems. Its purpose is to provide recommended practices for designing new tunnel lighting systems and it is not intended to be applied to existing lighting systems until such systems are redesigned. It has been prepared to advance the art, science, and practice of illumination as it pertains to tunnel lighting in North America.
Treatment of tunnel portals, wall and ceiling surfaces, and selection of lighting equipment, as well as light sources, maintenance and lighting economics are also reviewed and assessed. However, special requirements for pedestrians are not addressed in this document. For pedestrian and underpass lighting refer to ANSI/IESNA RP-8, American National Standard Practice for Roadway Lighting.
The emphasis on providing electric or daylighting in vehicular tunnels enables a motorist to maintain speed and safely navigate. The basic design criteria for tunnel lighting are outlined in Section 6.0. Tunnels may require considerably different treatment of the threshold zone luminance values, depending on variables such as geographic orientation, geometric design, traffic volume, traffic speed, service levels, light sources used, and modes of light application. The lighting designer, therefore, should consider the factors which affect the visibility conditions as outlined in Sections 3.0, 4.0, 5.0, 7.0, and 8.0.