In a pile Vertical load test we can applied various procedure. But commonly the method is after applying tested load gradually by a hydraulic jack take reading in respect with time. The time can be 2 min.,4 min., 8 min., 15 min., 30 min., 60 min., 120 min. In another process the time can be 5 min.,15 min., 30 min., 60 min. ;in that process if the difference between 1st and last reading is greater than 0.1mm. then it can be continued up to 120 min.
In a load test in oil sector industry the tested load was 90 Ton. The soil is clayey soil; which was used to fill the correspondence area. So, during Vertical load test the rate of settlement occurred rapidly, then I breake the above code provisions and I take the reading about approx three hour, to viewing the ultimate rate of settlement un till the dial gauges does not show slowly tends to static. Am I think the correct decisions or not. Because I think always that code only can give a guide to do work but it is not ultimate criteria.