A2
Extracted text: 0.4962 0.4825 0.5036 0.4726
Extracted text: SITUATION: A 12 ft x 10 ft footing carries a total load of 300 tons. Standard penetration test was conducted on the site. Test results were corrected for over burden pressure and corrected N-values are listed as shown. Determine the maximum settlement if the ground water table and base of the foundation are 7 ft and 4 ft below the ground surface respectively. Assume the dry and saturate unit weight of the sand are 115 pcf and 124 pcf respectively. Settlements of Loads on Sand (SPT) 29 Smas= 28 maximum settlement on dry sand in inches Nowest 1+B. 24 Njowest 28 Smax =Xa if the ground water table is located at a depth below the base of the footing less than the half the footings width (B/2). Xa = PP. Pa= effective overburden pressure at a depth B/2 below the footings base, assuming the water table is not present P. = effective overburden pressure at the same depth with water table present q= applied pressure in tons/t? B = in feet Depth (m) Corrected N-values 4.0 40 60 42 80 44 100 36 120 39 14.0 36 16.0 36