The open trenches are getting old. Really old.
With the probability of rain tomorrow (Sunday) at 90%, we had Manny and Izzie focused on backfilling and compacting as much of the open trenches at the site as possible.
Finding a Large Inner Tube
We decided to cover the two concrete vaults for the inlet and outlet for our underground cistern with dirt. However, in order to prevent the soil covering the concrete vaults from contaminating the water flowing into and out of the underground cistern, we needed a large, pliable gasket. The perfect material? A large inner tube.
Great idea. Just try to find a large inner tube.
After looking on Craigs List and googling the San Jose area, and then making numerous phone calls, we found a shop with some inner tubes. While we were prepared to buy a new inner tube, Gilroy Tire & Brake said they had a large tube that was being thrown out today.
Bryan got in the truck and headed for Gilroy to pick up the inner tube.
Protecting the Geothermal Ground Loop
We have 48 loops in our 25 concrete piers. Each of the loops are connected at the surface, and each of the 4 sets of 6 piers have supply and return lines that go into the West Mechanical room. Several of the loops are close to the surface and will be within an inch of the bottom of the concrete walkways around the house. The ground loops need to be protect.
Ken Martin, from Silicon Valley Mechanical, prescribed how to protect the HDPE tubing and joints that are close to the surface. We used the dense, closed cell packaging materials from our Fleetwood windows and sliding doors to protect the HDPE and attached the foam with nylon ties.