ISO 19902 Tubular Members Including Damaged and Grouted Members Available to Purchase

The background and basis of the ISO 19902 tubular member strength formulations is described. Many of the simpler provisions were initially based on the then existing API RP 2A LRFD formulations whilst others reflected changes already in the API system at the time but which had not yet been formally published. Some of the simpler provisions had been modified to reflect the requirements for international harmonization and some to improve correspondence with carefully screened test data. The new formulations, particularly those relating to pressure in combination with other actions/loads, were subject to final adjustment again through use of the screened database. In addition to strength requirements for typical intact structures, ISO 19902 saw the introduction of provisions for grouted and damaged members. Again the final forms of the equations were determined using the screened database. The criteria for screening the test results are discussed, to ensure consistency and relevance of the selected data. The process of selection of the equations for the characteristic values of the formulations, for both single acting and interacting forces, is described. Through comparison with the screened data, each of the formulations can be statistically quantified: the resulting characteristics are reported. At that time, improvements in tubular member effective length determinations had been realized. These were incorporated into the proposed recommendations. Their basis is explained.