A sometimes overlooked or unforeseen problem can be dealing with concrete and irrigation. Was a sidewalk there before? Was a driveway unaccounted for? Is this an irrigation system going in pre- or postconstruction? There are many ways to bore. The ideal situation is to drop sleeves before driveways or sidewalks are poured. Three-inch, schedule 40 PVC pipe is typically large enough for sprinkler systems, electrical wires, low-voltage cable, cable TV wire, telephone systems, and gas lines. Another method of boring is to use water as a boring tool. This is done by attaching the nozzle end of a hose to a length of pipe, creating a concentrated stream of water, which can be used to bore a hole underneath sidewalks and driveways. Additionally, boring can be done by drilling with a hammer drill and a flexible drill rod. This is a viable choice for sidewalks when installing landscape wire or 1/2?EUR??,,????'?? sprinkler flex pipe. The quickest and easiest way to bore under driveways is to use rods hooked to a walk-behind, ride-on, or vibratory plow. One of the most common methods is to use pre-existing drainage pipes. New lines can be tapped through and resealed; however, the new lines will have a slightly smaller diameter. Occasionally, people will attempt to hammer steel pipe with a sledge hammer under sidewalks or driveways. This is not recommended! It is a lengthy process and very difficult to do. L-2 Line-Layer Line-Ward touts the L-2 Line-Layer as a self-propelled, single operator machine. It has multiple uses, including the laying of irrigation pipe, cable television service wire or telephone lines. The L-2 has a boring attachment that comes with 30 feet of rods, bits and a storage box. The boring attachment is designed for going under driveways and sidewalks. Features on the L-2 include: patented design for right angle turns; a 16 HP Kohler gasoline engine that drives the heat treated alloy heavy duty gear train through twin V belts; and the ability to bury pipe at depths of four to 16 inches. For more information visit: www.lineward.com. The Ditch Witch JT520 The JT520 is the smallest member of the Ditch Witch self-contained family of directional boring systems. The machine is designed for shallow installations in residential areas. The JT520 is capable of pulling two-inch (50 mm) or smaller diameter conduit up to 150 feet (46 m), depending on soil conditions. Features on the JT520 include: single-lever thrust/pullback and rotation control; flat-style breakout system; high horsepower (25 HP) for its compact size; and a Kubota diesel engine. To learn more about the JT520, visit: www.ditchwitch.com. The Accu-Pipe Rod Pushing System Ramming Systems Inc.?EUR??,,????'???s Accu-Pipe Rod Pushing System has a variety of applications for water lines, pipe lines, sewer lines, electrical and fiber optic cables, and water intakes. Features on the Rod Pushing System include: fast and simple setup; a certified trench box that does not require shoring; availability of vertical trench box extensions; directional capabilities; the ability to launch below surface or directly on path; and a boring distance up to 600 feet. The Rod Pushing System can be found at www.accu-pipe.com.