GRAH Lighting
  • Home
  • PRODUCTS
      • STREET LIGHTS
        • Aerolite LSL
        • Aerolite ECO
        • Aerolite SOLAR
        • Dima 55
      • INDUSTRIAL LIGHTS
        • Terralite ECO
        • Impervius
        • Blas
        • Bria
        • Fox
        • Fox AS
        • Bix
      • OFFICE LIGHTS
        • Dema
        • Brattea
        • Reva
  • APPLICATIONS
      • OUTDOOR
        • Residential streets
        • Parks, squares
        • Parking areas
        • Old city centers
        • Walking paths
        • Bicycle lanes
        • Industrial areas
      • INDOOR
        • Industrial facilities
        • Warehouses
        • Gas stations
        • Offices
        • Shopping centers
        • Schools, universities
        • Sport facilities
  • TECHNOLOGY
    • Advantages
    • 360° approach technology
    • Machines
    • Intelligent lighting
    • Customization
  • ABOUT US
    • Company
    • History
    • Vision
    • Certificates
    • People
  • STUDY CENTER
    • Lighting technology overview
    • LED lighting challenges
    • Lighting calculations
    • Importance of appropriate light for humans
    • Importance of darkness for humans
    • Useful links
    • General FAQ
  • NEWS
  • CONTACT
    • Manufacture
    • Contact form
    • Location
    • Distributors
  • Search
  • Menu

Lighting calculations

Home1 / Lighting calculations

Lighting calculations

1. Effective lighting calculation

In the lighting world, there are two software that are free to use and everyone can download it. The software are Relux and Dialux. Using the software is simple, using the software potential and in a proper way is more challenging. Each of the software has is plusses and minuses.
By GRAH Lighting, we use different lighting calculation software but here we would like to represent the free to use lighting calculation software as Relux, Dialux and Litecalc and how to proper approach into the lighting world and what are the keys everyone has to know before starting with the lighting calculation.
Before choosing the proper lighting calculation software, it is needed to analyse the environment that has to be illuminated. The person has to know what will be illuminated (indoor, outdoor, both).

2. What do we need to start?

For a proper lighting calculation, it is important to have a sketch of the area with dimensions. It can be a simple paper sketch, pdf file, but for a best-detailed calculation is a dwg file the best solution. Everyone who is making lighting calculation has to know the standards. Standard for indoor lighting is EN 12464-1 and for outdoor lighting EN 12464-2, EN 13201-1, EN 13201-2, EN 13201-3, EN 13201-4, EN 13201-5.

2.1. Indoor questions?

– Home, public place (hospital, libraries, hotel, bus or train stations, garages…), sport halls
– Environmental check (what is around the building, and how the light would affect the environment (private houses, zoo, garden or parks…)
– Is this a new building or is there an existing illumination and how it looks like (what it is illumination for now, is it proper illumination but old one…)
– For what purpose will the indoor places will be used (parking, office, production, teaching, measurement, stock, eating, resting, reception…)
– What are the standards for different rooms

2.2. Outdoor questions?

– Public place, road, industry, cross-section, roundabout…
– What are the standards for a proper illumination for industry and/or street lighting
– Road lighting calculation questions (road category, road structure, pole position, near public places (schools, hospitals, hotels…)
– Industry (what kind of industry, traffic inside the industry…)
– Is there existing illumination and what kind off

3. Choosing the right software?

After asking you the first basic questions, it is time to choose the proper software, but how. Here we have to ask our self:
– What each software can give us as an effective result and freedom at the calculation. There for are various opinion and for visualization and more complex calculation we recommend Dialux, for more technical approach Relux is a better solution. However, every user should make his own opinion.
– What results do we want to get on the end, who will check the data (architects, investors, community, private…)

4. Choosing the right luminaires?

After you answered yourself all the questions and prepared the layout for the luminaires, it is time to choose the proper product. However, it is important to know which product at which “position”
– Can the luminaires based on existing one be replaced 1:1
– What are the environmental conditions (vandalism, animals living in the area, humidity, temperature, workplace, traffic / activities…)

5. Luminaires used in the lighting calculations

Each family of products have their special characteristics and are designed to fulfill a specific need, illumination and standard.
In the field of indoor lighting, we are orientated to focus on homogeny illumination with less possible glare. This is in lighting calculation represented as UGR. As lower the UGR value is, more comfortable is the working area.
In the filed of outdoor lighting the glare is used in values marked as D (Glare index class) and G (Luminous intensity class).

6. Results

As there are different types of luminaires for indoor and outdoor lighting, there are also different results that have to be taken in consideration by planning.
Indoor lighting:
– Lux values in different task areas
– Homogeny illumination (avoid quick drop of lux values in one room)
– UGR values on different task areas
– Cylindrical and half cylindrical values
– Maintenance factor
Outdoor lighting:
– Lux values based on different outdoor areas
– Critical areas where is high risk of accidents
– Homogeny illumination

Street lighting
– Candela values base on different road classes
– Value of glare index class
– Value of luminous intensity class
– Uniformity values
– TI values
– IER values
– Cylindrical values (pedestrian crossings)

About us

  • Company
  • History
  • Vision
  • Certificates
  • People

Technology

  • Advantages
  • 360° approach technology
  • Machines
  • Intelligent lighting
  • Customization

Products

  • STREET LIGHTS
    • Aerolite LSL
    • Aerolite ECO
    • Aerolite SOLAR
    • Dima 55
  • INDUSTRIAL LIGHTS
    • Terralite ECO
    • Impervius
    • Blas
    • Bria
    • Fox
    • Fox AS
    • Bix
  • OFFICE LIGHTS
    • Dema
    • Brattea
    • Reva

Applications

  • OUTDOOR
    • Residential streets
    • Parks, squares
    • Parking areas
    • Old city centers
    • Walking paths
    • Bicycle lanes
    • Industrial areas
  • INDOOR
    • Industrial facilities
    • Warehouses
    • Gas stations
    • Offices
    • Shopping centers
    • Schools, universities
    • Sport facilities

Study center

  • Lighting technology overview
  • LED lighting challenges
  • Lighting calculations
  • Importance of appropriate light for humans
  • Importance of darkness for humans
  • Useful links
  • General FAQ

Contact

  • Manufacture
  • Contact form
  • Location
  • Distributors

News

DOWNLOAD
CENTER

PARTNER LOGIN

Grah Logotype

Grah Lighting d.o.o.
Zadružna ulica 6,
SI – 2310 Slovenska Bistrica,
Slovenia, EU

T: +386 82 801 424
E: info@grahlighting.com

youtube

linkedin

facebook

contact us

  • Disclaimer
  • Privacy Notice
Copyright © 2020 Grah Lighting. All Rights Reserved.

This site uses cookies. By continuing to browse the site, you are agreeing to our use of cookies.

Accept settingsHide notification onlySettings

Cookie and Privacy Settings



How we use cookies

We may request cookies to be set on your device. We use cookies to let us know when you visit our websites, how you interact with us, to enrich your user experience, and to customize your relationship with our website.

Click on the different category headings to find out more. You can also change some of your preferences. Note that blocking some types of cookies may impact your experience on our websites and the services we are able to offer.

Essential Website Cookies

These cookies are strictly necessary to provide you with services available through our website and to use some of its features.

Because these cookies are strictly necessary to deliver the website, refuseing them will have impact how our site functions. You always can block or delete cookies by changing your browser settings and force blocking all cookies on this website. But this will always prompt you to accept/refuse cookies when revisiting our site.

We fully respect if you want to refuse cookies but to avoid asking you again and again kindly allow us to store a cookie for that. You are free to opt out any time or opt in for other cookies to get a better experience. If you refuse cookies we will remove all set cookies in our domain.

We provide you with a list of stored cookies on your computer in our domain so you can check what we stored. Due to security reasons we are not able to show or modify cookies from other domains. You can check these in your browser security settings.

Google Analytics Cookies

These cookies collect information that is used either in aggregate form to help us understand how our website is being used or how effective our marketing campaigns are, or to help us customize our website and application for you in order to enhance your experience.

If you do not want that we track your visit to our site you can disable tracking in your browser here:

Other external services

We also use different external services like Google Webfonts, Google Maps, and external Video providers. Since these providers may collect personal data like your IP address we allow you to block them here. Please be aware that this might heavily reduce the functionality and appearance of our site. Changes will take effect once you reload the page.

Google Webfont Settings:

Google Map Settings:

Google reCaptcha Settings:

Vimeo and Youtube video embeds:

Other cookies

The following cookies are also needed - You can choose if you want to allow them:

Privacy Policy

You can read about our cookies and privacy settings in detail on our Privacy Policy Page.

Privacy Policy
Accept settingsHide notification only
Scroll to top