The concrete pour for the foundation walls was successfully completed last night. No other aspect of our new home project has made me more nervous. It is the only aspect of construction for which there is no way to correct a mistake. We needed five concrete mixer trucks to show up at 30-minute intervals. One breaks down or arrives late and we are screwed. If the pump truck gets clogged midway through the pour we are screwed. If the concrete vibrators malfunction we are screwed. If the ICFs blow out we are screwed. If the walls are not straight and plumb we are screwed. I think you get the idea. A lot of things can go wrong and once the concrete sets, you are stuck with it. I am happy to report that no such calamities occurred and the work appears to have gone perfectly to plan. See the video below.

Thirty-two huge bags of Glavel were delivered this morning. Glavel is a thermally insulating, load-bearing bulk aggregate made entirely from recycled glass. It has an R-value of 1.7 per compacted inch and compressive strength of 116psi. We will use 16 inches of it below the concrete floor in the basement.