If necessary to cross sidewalks, dig the trench right down to the expected depth on either side, then bore a lateral hole under the sidewalk by driving a piece of rigid pipe or conduit horizontally. Then, operate the conduit beneath the sidewalk with the gap you bored. To be sure https://selfadhesiveminitrunking89112.jts-blog.com/28709358/how-cable-trunking-can-save-you-time-stress-and-money