PANEL PIPE FOR ROOF FLOOR 16 15 14 13 12 11 10 17 9 8 18 7 19 ROOF 20 6 5 24R x 0.16 23G x 0.28 21 4 22 23 3 2 ROOF 24 UP 25 DOWN BATH ROOF GYM ROOF FLOOR A 3 E 0 2 0