ABSTRACT

In 1993 the American society for Civil Engineering (ASCE) adopted the ASCE 15-93, a standard practice for direct design of buried precise concrete pipe using standard installation (SIDD). The ASCE 15-93 defines four new standard installation types, ranging from Type 1 that offers the highest quality of soil materials and soil compaction in the embedment zone, to Type 4 that requires little field control and no imported bedding materials. This paper reports the initial findings of a full-scale test bed of a Type 4 SIDD installation that took place in central Ontario during the summer of 2000. The information presented includes local geotechnical data, trench geometry, elevation and a plan view of the test site as well as initial results from the buried instrumentation. The earth pressures recorded around the pipe were compared to predictions from the ASCE 15-93 as well as from Marston-Spangler theory.