Les acquainted us with the various systems which can be installed to the point where he can run electrical drills etc.
After that we watched a video explaining how problems have arisen in one of the very tall new buildings in Shanghai China. This building is spectacular to look at, but tenants find it difficult to rent as a lot of space in the building is not habitable. Only half the building is tenanted.
The video did show how much development has taken place in Shanghai over the past 30 years.
To lighten the mood, we watched a video about the bridges on the Thames in London.
Neville Gibb