A sub-surface membrane deposition device including a movable frame, at least one chisel attached to the frame, hydraulics to raise and lower the at least one chisel from the frame, and a membrane deployable to a sub-surface level by the at least one chisel as the movable frame is moved. Also provided is a method of deposing a membrane to a sub-surface level that includes providing a movable frame, at least one chisel attached to the frame, hydraulics to raise and lower the at least one chisel from the frame, and a membrane. The method including lowering the at least one chisel with the hydraulics to the sub-surface level, moving the frame and at least one chisel forward, and deploying the membrane to the sub-surface level with the at least one chisel.

A sub-surface membrane deposition device including a movable frame, at least one chisel attached to the frame, hydraulics to raise and lower the at least one chisel from the frame, and a membrane deployable to a sub-surface level by the at least one chisel as the movable frame is moved. Also provided is a method of deposing a membrane to a sub-surface level that includes providing a movable frame, at least one chisel attached to the frame, hydraulics to raise and lower the at least one chisel from the frame, and a membrane. The method including lowering the at least one chisel with the hydraulics to the sub-surface level, moving the frame and at least one chisel forward, and deploying the membrane to the sub-surface level with the at least one chisel.

A rail element is provided having a longitudinal axis, a first longitudinal end and a second longitudinal end longitudinally spaced from the first end along the longitudinal axis. The rail element includes a rail body longitudinally extending between the first longitudinal end and the second longitudinal end, the rail body defining therein at least one longitudinally extending first lumen having a longitudinally co-extensive transverse first opening, the rail element being configured for being mounted to at least one longitudinal support member in load bearing contact therewith in operation of the rail element. The rail element is configured for being mounted to the at least one longitudinal support member in a non-longitudinal manner A system for covering an area incorporating such rail elements is also provided, as well as a method for using such a system.

A rail element is provided having a longitudinal axis, a first longitudinal end and a second longitudinal end longitudinally spaced from the first end along the longitudinal axis. The rail element includes a rail body longitudinally extending between the first longitudinal end and the second longitudinal end, the rail body defining therein at least one longitudinally extending first lumen having a longitudinally co-extensive transverse first opening, the rail element being configured for being mounted to at least one longitudinal support member in load bearing contact therewith in operation of the rail element. The rail element is configured for being mounted to the at least one longitudinal support member in a non-longitudinal manner A system for covering an area incorporating such rail elements is also provided, as well as a method for using such a system.