ASTM C1208/C1208M-18(2022)

Annotation of standard text ASTM C1208/C1208M-18(2022) :

This specification establishes the criteria for the manufacture, quality assurance testing, inspection, installation, field acceptance testing, inspection, installation, field acceptance testing, and product marking of vitrified clay pipe to be used in microtunneling, pilot tube microtunneling, sliplining, pipe bursting, and in casings and tunnels for the conveyance of sewage, industrial wastes, and storm water. Vitrified clay pipe shall be manufactured from fire clay, shale, surface clay, or a combination of these materials that, when formed into pipe and fired to suitable temperatures, yields a product that conforms to this specification. Pipes of nominal diameters shall meet the prescribed bearing strength requirements. The clay pipe shall undergo the following tests: compressive strength test; hydrostatic pressure test; absorption test; and acid resistance test. The pipe shall conform to the required sizes and dimensions. The pipe shall not deviate from straight by more than a specified value when the maximum offset is measured from the concave side of the pipe. The pipe wall thickness shall be a suitable dimension to adequately distribute the field jacking forces. There shall be no fractures or cracks passing through the carrel, visible to the unaided eye. Chips, fractures, or blisters on the pipe shall not exceed a specified value in any surface dimension and shall not exceed a required depth of the minimum thickness of the barrel. Principles of joint design, test requirements, and test methods for assembled joints shall also be indicated.


Keywords:
clay pipe, compressive strength, jacking, jacking force, microtunneling, pipe bursting, sleeve, sliplining, the pilot tube method, tunnels,, ICS Number Code 23.040.50 (Pipes and fittings of other materials)