Today Jeff and I worked on putting in the 4 inch vent pipes for our air-to-air exchanger.  Since our house will have no attic (just lots of daffodils),  these pipes must go under the concrete floor.   Using a string line and marker paint, it was easy to dig in a straight line.

Unfortunately there was a mix-up in communication between our plumber and the building department and the inspector didn’t make it out today.  He will be coming on Monday.