Steps to perform lighting calculations

1) Understand the different types of luminaries, their control strategy and power requirements.

2) Determine the required illuminance levels for that room. Check if task lighting needs to be provided.

3) Get the following details, ceiling type, ceiling height, environment indoor or outdoor, maintenance.

4) Select the fitting - should meet the design criteria in terms of power required, protection rating, lumens output and mounting requirement.

5) Model and calculate in Dialux or Relux. Some manufacturers have calculations on their website.

6) Check if light distribution meets you design criteria like uniformity, glare.

Observations on the London tube

Journey on the tube is mostly quiet with only the sounds of the announcement and the train distinct.

Most are buried in their reading material either the newspaper or a book. Kindle being the popular device to read a book on. If it is a newspaper it will mostly be the metro or evening standard. But in the morning when you approach central London, you can see people reading the financial times. There are some who will read irrespective of how crowded the train is.

While the younger generation are mostly confined to social media, with Facebook being the popular choice. There are certain number of annoying people who will be talking loudly on their phones (especially noticeable in the metropolitan line). Some take it further by listening to loud music on their fancy headphones.

The most popular game played by woman is candy crush or other form of matching games, while men play football based manager games or puzzles including candy crush. I will be asking people on their choice of games and make a list. It will be extremely difficult considering how people are to having a conversation.

In the evening, it is back to using the phones again. I mean can you blame them.

P.S. I wrote this post while on the way to work on the tube.