Set up the loading and deflection, measuring systems so that the load is applied to the plate without eccentricity and the deflection system is outside the zone of influence of the pattachments.ziplate. The plate shall be placed on a thin layer (10 to 15mm thick) of clean dry sand to produce a level surface on which to bed the plate. Protect the test area and the apparatus from moisture changes, sunlight and the effects of adverse weather as soon as the test level is exposed and throughout the test. Carefully trim off and remove all loose material and any embedded fragments so that the area for the plate is generally level and as undisturbed as possible. A mechanical excavator may be used provided that the excavator bucket does not have teeth and the last 100mm depth of excavation is carried out carefully by hand.
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