Remote control device with closed circuit television (CCTVClosed circuit television used to carry out internal inspection and survey of pipelines.) monitoring, used mainly in localized repair work, such as cutting away obstructions, re-opening lateral connections, grinding and re-filling defective areas and injecting resin into cracks and cavities.
Per ASTMAmerican Society of Testing and Materials; technical organization formed for the development of standards on characteristics and performance of materials, products, systems and services, and the promotion of related knowledge. D653 and ISRM, any naturally formed aggregate of mineral matter occurring in large masses or fragments.
Method of forming a pilot bore by driving a closed pipe head with rigid attachment from a launch pit into the soil which is displaced. Limited steering and monitoring capability may be provided, usually in conjunction with a locator. See Thrust BoringA method of forming a pilot bore by driving a closed pipe or head from a thrust pit into the soil which is displaced. Some small diameter models have steering capability achieved by a slanted pilot-head face and electronic monitoring. Back reaming may be used to enlarge the pilot bore. Also loosely applied to various trenchless installations methods. See Rod....
Either flexible poles, fiberglass or wood for example, for removing blockages in sewers; or graduated measuring devices for estimating internal sewer dimensions.
The angle of rotation about the theoretical longitudinal centerline of the MTBM, measured from the 12 o’clock position.