| 主权项 |
1. A containment berm comprising:
(a) a containment material that is durable, flexible and chemically resistant, the containment material configured to provide at least a floor and four walls of the berm, wherein each wall has an inside surface; (b) a plurality of brackets positioned on the floor and adjacent to the inside surface of each of the four walls, each bracket comprising a vertical member, a connecting member, and a horizontal member, wherein a first end of the vertical member is pivotally connected to a first end of the horizontal member at a first pivot point, wherein a first end of the connecting member is pivotally connected to the horizontal member at a second pivot point between the first end of the horizontal member and a second end of the horizontal member; and (c) a top rail, wherein the top rail extends around a top perimeter of the four walls of the berm; wherein each bracket comprises a clamp portion that is situated on a second end of the vertical member, the containment material forms a hem along the top perimeter of the berm, the top rail extends through the hem, and the clamp portion clamps onto the top rail at a cut-out in the hem; wherein the clamp portion comprises;
a stationary bracket that is concave in shape and pivotally connected at a bottom end of the stationary bracket to a pivoting bracket that is concave in shape and that has a recess;a bolt with a pivoting end that is pivotally connected to a top end of the stationary bracket; anda wing nut; wherein to close the clamp portion, a top end of the pivoting bracket is pivoted toward the top end of the stationary bracket, the bolt is inserted into the recess in the pivoting bracket, and the wing nut is tightened on the bolt; and wherein both the stationary bracket and the pivoting bracket are concave in shape so that the top rail fits inside of the clamp portion when it is in a closed position. |
