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  12" SQUARE PILES Next larger size
Low prestress level

12" solid pile cross section with 4 strands in 7" diameter circle
4 strands - fpc = 739

Design Criteria		 12 in. square pile with 4 strands and 6 ksi concrete
f'c = 6 ksi
128 ton axial load 		12 in. square pile with 4 strands and 7 ksi concrete
f'c = 7 ksi
152 ton axial load 		12 in. square pile with 4 strands and 8 ksi concrete
f'c = 8 ksi
176 ton axial load
High prestress level

12" solid pile cross section with 7 strands in 7" diameter circle
7 strands - fpc = 1233

Design Criteria		 12 in. square pile with 7 strands and 6 ksi concrete
f'c = 6 ksi
119 ton axial load 		12 in. square pile with 7 strands and 7 ksi concrete
f'c = 7 ksi
142 ton axial load 		12 in. square pile with 7 strands and 8 ksi concrete
f'c = 8 ksi
166 ton axial load