2)The design of the self drilling anchor bolt system should poss safety and economics on premise that the practical function has been satisfied.
3)To assure that the prestress of self drilling anchor bolt system, which is inflicted on the structure or the stratum, will not have negative effects on the structure itself or the buildings adjacent to it. The displacement produced by the self drilling anchor bolt system should be controlled among the allowable ranges.
4)The useful lifetime of the permanent self drilling anchor bolt system should not less than the length of service of the anchored structure.
5)The self drilling anchor bolt system adopted should be conducted anchoring capability tests before applying to the project.
6)It there are big differences between the design and the test, the parameters of the anchorage design should be adjusted. Then the self drilling anchor bolt system should be tested again.
