5.3 AccuracyThe height difference between any two points used as permanent benchmarks shall not be in error by more than ± (12 x Sqrt k) mm, where k is the distance in kilometres between the two points being considered, or ± 5mm, whichever is the greater.For purposes where lower levels of accuracy may be appropriate. Alternatives shall be agreed with the Employer.
đang được dịch, vui lòng đợi..