We are planning a remodel to make a new master bedroom suite out of two existing bedrooms on the lower level of our split-foyer raised ranch style home. To tie in the new drain lines for the added bathroom, we will need to first locate the main line under the concrete slab. We want to keep the concrete removal to a minimum. What is the best way to locate the main lines approximate location before we just start sawing? The pipe is probably PVC under 4-6 inches of concrete containing steel re-bar or mesh. Based on the positions of the exisiting lower level bathroom and the septic tank, it could be anywhere along a 12 foot length of the exerior wall.
| |Existing | | | | Bath | | |
| | | |
| | | New Master | | |New Bedroom | | |Bath |
|Septic| |Tank |