Today we built the support for the sit-down shower. The tub had to be raised to accommodate the height of the P-trap; to do this we used the leftover cedar 4" x 4"s from the deck and topped them with boards from our box garden.
Cedar 4" x 4"s scewed together with deck screws, attached to the floor with angle brackets.
The support platform for the tub was made from materials from our box garden. The cutout outlined on the right side will accommodate the P-trap plumbing. The kitchen counter/sink unit is on the right.
Rub-a-dub, baby. :-)
The pipe from the P-trap will drop down directly into the graywater tank.