| 20100032435 | Portable Tank - A portable tank includes a tank interior defined by a plurality of panels, with the floor panel supported by a floor support structure. The floor support structure includes side channels with cross members connecting the side channels. A mid floor beam is received in notches formed in some of the cross members, and a rear floor beam is received in notches formed in different cross members. The mid floor beam and the rear floor beam do not span the entire length of the tank. There are cross members with smooth sided upper support surfaces in front of and behind the mid floor beam, and cross members with smooth sided upper support surfaces in front of the rear floor beam. | 02-11-2010 |