Abstract: A precast concrete wall on a prepared subgrade, comprises standardized, precast, reinforced concrete foundation, wall and cap modules. The cap modules include parapets on opposed sides and an elevated roadway therebetween. A plurality of tie down rods, each extending through the cap modules, two or more courses of wall modules and at least partially into the foundation modules. An optional anti-tunneling barrier is provided in the subgrade, below the foundation. A method of constructing the wall includes specifying standardized reinforced concrete foundation, wall and cap modules so that they can be manufactured by multiple suppliers, and providing a logistical model to minimize shipping costs by matching each point of fabrication with the appropriate point of delivery.

Abstract: A water diversion system for a job site in a streambed comprises a cofferdam in the streambed upstream of the job site, at least one, preferably two sections of substantially rigid pipe embedded in the cofferdam, a valve or plug in each pipe section to open or close water flow through the pipe, and at least one, preferably two flexible tubes connected to the downstream ends of the pipe sections, respectively. The flexible tubes are configured to lie on the natural streambed and traverse the job site, substantially without grading or otherwise disturbing the natural streambed. An optional positioning and pull straps can be installed on the flexible tubes to assist with moving the tubes and securing the tube in place under water flows. Water diversion paths around and through the job site can alternated or changed by flipping the valves and/or moving the flexible tubes.

Abstract: A method for loading compacted solid waste refuse in the form of bales indexed two at a time for loading into a plastic-lined dump trailer. The dump trailer being covered and including a rear closure door for transporting the bales in a closed environment to a balefill. The method further includes tilting the dump trailer at a low slip angle to dump the bales a pair at a time smoothly sliding from the plastic-lined trailer to be picked by mechanical device for stacking in the balefill.

Abstract: An internally reinforced extruded plastic pipe which is adapted for use as an underground infiltration, collection, or transport conduit for liquids and gases. The pipe is provided with at least one integral reinforcing stem and the critical mode of failure is buckling rather than deflection. The pipe is not dependent upon surrounding backfill for lateral support as with conventional pipe or conventional reinforced pipe. The same amount of plastic is usable per lineal unit as is used in comparable conventional pipe sizes, however, the cross-section is redistributed, which achieves greater loading capacity.

Abstract: An internally reinforced extruded plastic pipe which is adapted for use as an underground infiltration, collection, or transport conduit for liquids and gases. The pipe is provided with at least one integral reinforcing stem and the critical mode of failure is buckling rather than deflection. The pipe is not dependent upon surrounding backfill for lateral support as with conventional pipe or conventional reinforced pipe. The same amount of plastic is usable per lineal unit as is used in comparable conventional pipe sizes, however, the cross-section is redistributed, which achieves greater loading capacity.