Melcar Drilling Technologies — Taylorsville, NC
Equipment: Vermeer® 24x40a and a StraightLine® 5" Air Hammer System. This combination allowed excellent penetration rates in the granite while also providing the flexibility needed to accomplish the vast grade changes.
Ground conditions: bore length was just over 300', the first 200' was solid granite and the last 150' was 60% granite and the balance was sandy loam.
Project: this project consisted of multiple bores from 200 to 600' in length to install 6" & 8" pipe for a rural water system. The pictured bore entered the ground at a minus 20%, over the next 100' the bore path was brought to level, at the 150' mark the bore passed under a creek at a depth of 6' under its bottom and then proceeded up the bank and exited the ground at a plus 30%.
Once the pilot hole was in place the contractor used a StraightLine® Hole Opener to enlarge the pilot hole to the required diameter for product installation. The hole opener was fitted to a Vermeer® 100x120SII.
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