Measuring opaqueness of screening

[shelliej]

I am writing code for a small town and am trying to come up with an alternative to stating a percentage of opaqueness of a screen because I don't think this is measureable. Does anyone have any suggestions?

[mendelman]

For fencing, we have the loose terms of "open", "semi-open" and "solid"

Open - generally applied as 50% surface is transparent.

Semi-open - allows for the free flow of air through the fence.

Solid - zero transparency

For landscaping screening (esp between commerical or parking lots and residential), we generally require either a 6 foot solid fence or a 6 foot "solid" row of dense shrubbery. Shrubbery usually ends being 6 foot tall (at planting) arbor vitae evergreen shrubs.

Hope this helps.