In a recent post I mentioned I am redoing my house foundations. The permit application process is nearly complete. Stared items are still pending, but expected in the next few days. The application consists of the following:
- Architectural Drawing of the Houses
- Asbestos Survey
- Test for Ground Contamination*
- Test for Ground Stability, where they send a probe some 20+ meters into the ground to look for the beginning of the stable ground layer.
- Pile plan, where a technically oriented architect uses the building drawings together with the ground stability tests to determine how many of what type piles need to be placed, together with their pattern.
- Archaeological study waver, where the city determines (hopefully) an archaeological study is not needed under my house before starting the construction.*
After the application, a building inspector will come and do an inspection. This could be very superficial or very involved, I’m not sure yet.
So far no asbestos or toxic materials have been found yet, but not all the test results have been returned.
The new piles will be about 22cm in diameter and 21 meters deep! The ceiling clearance on our ground floor is only about 2 meters, so they will have to drive them in segments. They will be made by driving a hollow casing into the ground, filling it with concrete, then removing the casing (I think). In total, 19 piles will be needed.