The use of prefabricated segments in Man-EntryDescribes any trenchless technology process which requires an operative to enter a pipe, duct or bore. OSHA has no minimum size limit for Man-Entry; however, they address a much broader concept of "confined space" in Title 29 Code of Federal Regulations Part 1910.146. The minimum size for which this is permissible in the UK is 900 mm (approximately 36 in.). work to form a new lining within a defective pipe. The segments are usually sealed at the joints and the annulus is grouted. See Lining with Pipe SegmentsMethod of lining with pipe sections made of at least two pieces with both longitudinal and circumferential joints..
