How to position downlighters

[Stan Getz]

I want to install a line of downlighters in my hall but when I try to divide the line evenly I find that at least one light will foul a joist running across the hall.
How should lamps be spaced to avoid joists?

 

[JohnKay]

Hi,
That's what is known as Sod's Law. There really is no answer to this. downlights have been called a few things due to this. At the end of the day you have to forget the equal spacing, and 'play' with the spacing as best you can.

 

[Stan Getz]

John:
I guess you are right.
I think I'll position the downlights in pairs, with alternate shorter and longer spaces between.
But I'll first prepare a scale drawing.