If essential to cross sidewalks, dig the trench all the way down to the necessary depth on both sides, then bore a lateral gap underneath the sidewalk by driving a piece of rigid pipe or conduit horizontally. Then, operate the conduit beneath the sidewalk from the gap you bored. A https://mini-trunking67789.ivasdesign.com/51421749/5-simple-statements-about-self-adhesive-mini-trunking-explained