Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
These standards and regulations are not mandatory, but they serve as references and best practices for the street lighting industry and the road construction agencies. They help to ensure that the street lighting systems are designed and installed in a way that meets the needs and expectations of the users and the stakeholders, as well as the safety and sustainability goals of the society.
To calculate the street light brightness for a road construction project, we need to follow these steps:
Define the project scope and objectives. We need to determine the type, location, and length of the road, the traffic volume and speed, the environmental conditions, and the desired level of service and quality of the street lighting system. We also need to identify the relevant standards and regulations that apply to the project, and the budget and timeline constraints.
Select the street lighting system components. We need to choose the type, wattage, and number of light sources, the type and size of the poles and fixtures, the type and configuration of the wiring and control systems, and the type and location of the power supply. We also need to consider the energy efficiency, the maintenance cost, and the environmental impact of the street lighting system components.
Perform the street lighting calculations. We need to use some mathematical formulas and tools to calculate the brightness of street lights for the road surface and the surrounding area. We also need to calculate the uniformity ratio, which is the ratio of the minimum to the average illuminance, and the glare index, which is a measure of the visual discomfort caused by the street lights. We can use some software programs, such as AGi32, Dialux, or Visual, to perform the street lighting calculations and simulations, and to generate the photometric reports and diagrams.
Evaluate the street lighting design. We need to compare the results of the street lighting calculations with the standards and regulations, and with the project objectives and expectations. We need to check if the street light brightness, uniformity, and glare meet the minimum and maximum requirements, and if they provide adequate visibility and comfort for the users and the workers. We also need to evaluate the economic and environmental performance of the street lighting system, such as the energy consumption, the life-cycle cost, and the light pollution.
Adjust and optimize the street lighting design. If the street lighting design does not meet the criteria and the goals, we need to make some adjustments and optimizations, such as changing the type, wattage, or number of light sources, the height, spacing, or orientation of the poles and fixtures, or the layout and configuration of the wiring and control systems. We need to repeat the street lighting calculations and evaluations until we achieve the optimal street lighting design for the road construction project.
Let`s assume that we are working on a road construction project for a two-lane rural road in the United States. The road is 10 miles long, 24 feet wide, and has a speed limit of 55 mph. The traffic volume is low, and the environmental conditions are dark and clear. The project objective is to provide a safe and efficient street lighting system for the road, using LED light sources and solar power supply. The project budget is $500,000, and the project timeline is 6 months. The relevant standards and regulations are the ANSI/IES RP-8 and the DOE/MSSLC Model Specification.
To calculate the street light brightness for this project, we can follow these steps:
Define the project scope and objectives. According to the ANSI/IES RP-8, the road belongs to the class R3, which is a rural road with low traffic volume and speed. The recommended values of average maintained illuminance, uniformity ratio, and glare index for this class of road are 0.6 fc, 3.0, and 25, respectively. The project objective is to provide a street lighting system that meets or exceeds these values, using LED light sources and solar power supply.
Select the street lighting system components. According to the DOE/MSSLC Model Specification, the minimum and maximum requirements for the performance, quality, and reliability of LED street lights are as follows:
January 10, 2024
On April 22, network activity named "FAST 2015 -! OPEN DAY" was launched by a brand LED high-power outdoor lighting manufacturer- Shenzhen Lead Optoelectronics Technology Co., Ltd.(Chinese name is...
Recently, the world's leading watch brand Hublot and brand ambassador, legendary track and field athlete Usain Bolt hand in hand into Kyoto, the ancient capital of Japan, with passion to ignite...
This article is reproduced, does not represent the world position of million table.
After two years of breakthrough in the laboratory's light efficiency of 200 lm/W, Cree has finally produced the series of LED chips with 200 lumens per watt at the end of 2012, and officially...
Email to this supplier
January 10, 2024
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.
Fill in more information so that we can get in touch with you faster
Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.