Toro 2024 Operator's Manual

Also see for 2024: Operator's manual Software guide

Planning the Bore PathBefore setting up the job site, you need to plan the bore path,including the following:12 345 g021764Figure 241. Bore entry 4. Obstacle2. Beginning-of-bore-at-depth point 5. End-of-bore-at-depth point and bore exit3. Bore depth• Bore entryThe is the location where you setup the machine and thedrill bit enters the ground. Depending on conditions, thiswill typically be set back 9 to 15 m (30 to 50 ft) from thebeginning-of-the-bore-at-depth point.• Beginning-of-bore-at-depth pointThis is the point where you want the utility line or pipe toend after installation is complete. It is typically the point atwhich the bore levels out and begins to bore horizontally.This may be the same as the entry point, or you may dig aseparate depth-gauge hole at this point (Figure 24).• Bore depthThis the depth at which you want to install the utilityline or pipe. This machine is designed primarily forinstallations between 1 and 3 m (3.5 to 10 ft).• Obstacles in the pathIt is important to know where the known obstacles arethat you will need to steer around or under before startingso that you can plan where to begin steering prior toreaching the obstacle.• End-of-bore-at-depth pointThis is the point where you want the utility line or pipeto begin after installation is complete. Often this will alsobe the bore exit.• Bore exitThis is the location where the drill head will exit theground and the point at which you will pull the utility linesor pipe into the bore. If this point will be at the surfaceinstead of at installation depth, you will need to determinethe distance from the end-of-bore-at-depth locationneeded for steering the drill to the surface, typically 9 to 15m (30 to 50 ft) from the end-of-the-bore-at-depth point.Determining the Bore Entry PointOne of the more challenging aspects of planning the borepath is to determine the entry point of the bore. You need totake the following traits into account when determining thelocation of the entry point:• Bore depthThis the depth at which you want to install the utilityline or pipe. This machine is designed primarily forinstallations between 1 and 3 m (3.5 to 10 ft).• Pipe and material flexibilityThe 3 m (10 ft) pipes used on this machine can flex to an8% pitch over the length of the pipe; this equates to abend of no more than 20 cm (8 inches) off of a straightpath (Figure 25).Important: If you steer the pipe to bend sharperthan 20 cm (8 inches) per pipe, you may damage thepipes and their connections. You must also makesteering changes gradually over the entire length ofeach pipe. If you steer the whole 20 cm (8 inches)in only 25 to 50 cm (1 to 2 ft) of travel, you willpermanently damage the pipes.34