The Assessment of Pipes Reliability from High Duty Cast Iron with Spheroidal Graphite and their Use for Laying in Karsted Hardgrounds

Abstract

Utility pipes of centralized water supply and sanitation are among the most important elements of these systems, and how operating practice shows, the most vulnerable. Research of JSC “MosvodokanalNIIproekt” and operating experience from high duty cast iron with spheroidal graphite (HDCISG) abroad and in Russia confirmed the high performance and reliability of p[pesd from HDCISG and determined the possibility of their use on the weak and subsiding soils and karsted hardgrounds. There were presented data on reliability properties and criteria for the selection of pipes from high duty cast iron with spheroidal graphite for laying on karsted areas. There was presented an example of strength calculation of the pipeline of HDCISG on a dangerous karsted solid mass.