RV Floor Cut-Out

I have a 1997 Jayco Eagle 30-foot travel trailer. I am doing a complete tear out and rebuild. I have come across replacing the bathtub and I noticed a cutout of the floor directly below the drain with a piece of aluminum below it. I'm just wondering if they cut this out in case the drain leaks? I do not want to punch a hole the aluminum in case that leads to the holding tank. What can you tell me about this? Joe R.

Joe, that is simply an access point for the P-trap for the tub. By code, all P-traps must be accessible and having that floor cut-out satisfies that requirement. The technician can access the trap from under the coach if necessary. There is likely some air space between the cut-out in the floor and the top of the holding tank. It might be prudent to use a flashlight and a mirror to verify first.

##RVT854