Timing Is Everything

by Don Friedman on January 29, 2016

Marieta pointed out yesterday that as long as I’m talking about crack monitors, I need to discuss their biggest failing: they depend on us to be installed and reviewed.


Notice how the crack is much wider than the distance shown on the monitor? If the crack monitors are installed after a severe event (in this case, movement from adjacent construction) then they may well she no movement or, as here, very little. That’s not meaningless: the issue of whether movement is ongoing or a one-time event is a serious one and data that addresses it is useful. It’s just not as useful as data that records all of the movement.

Previous post:

Next post: