Laserfiche WebLink
°�� � � -�� �� Stork Twin City Testing Corporation <br /> Materials Technology <br /> FIELD EXPLORATION PROCEDURES • <br /> Soil Sampling <br /> Soil sampling was performed in accordance with ASTM D 1586-08. Using this <br /> procedure, a 2" O.D. split barrel sampler is driven into the soil by a 140 pound weight <br /> falling 30". After an initial set of 6", the number of blows required to drive the sampler <br /> an additional 12" is known as the penetration resistance, or N value. The N value is an <br /> index of the relative density of cohesionless soils and the consistency of cohesive soils. <br /> Thin wall tube samples were obtained according to ASTM D 1587-00 where indicated <br /> by the appropriate symbol on the boring logs. Rock core samples, if taken, were <br /> obtained by rotary drilling in accordance with ASTM D 2113-06. Power auger borings, if <br /> performed, were done in general accordance with ASTM D 1452-00. <br /> Soil Classification <br /> As the samples were obtained in the field, they were visually and manually classified by <br /> the crew chief in accordance with ASTM D 2488-06. Representative portions of the <br /> samples were then returned to the laboratory for further examination and for verification <br /> of the field classification. Logs of the borings indicating the depth and identification of <br /> the various strata, the N value, the laboratory test data, water level information and <br /> pertinent information regarding the method of maintaining and advancing the drill holes <br /> are attached. The descriptive terminology and symbols used on the boring logs are <br /> also attached. <br /> Stork Twin City Testing Corporation is an operating united of Stork Materials Technology B.V., <br /> tw�n citti+test�nq Amsterdam,The Netherlands,which is a member of the Stork group <br /> ��«�e„ <br />