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  18" OCTAGONAL PILES Next smaller size Next larger size
Low prestress level

18 in. solid pile cross section with 8 strands in 13 inch circle
8 strands - fpc = 801

Design Criteria		 18 in. octagonal pile with 8 strands and 6 ksi concrete
f'c = 6 ksi
237 ton axial load 		18 in. octagonal pile with 8 strands and 7 ksi concrete
f'c = 7 ksi
281 ton axial load 		18 in. octagonal pile with 8 strands and 8 ksi concrete
f'c = 8 ksi
325 ton axial load
High prestress level

18 in. solid pile cross section with 13 strands in 13 inch circle
13 strands - fpc = 1251

Design Criteria		 18 in. octagonal pile with 13 strands and 6 ksi concrete
f'c = 6 ksi
220 ton axial load 		18 in. octagonal pile with 13 strands and 7 ksi concrete
f'c = 7 ksi
265 ton axial load 		18 in. octagonal pile with 13 strands and 8 ksi concrete
f'c = 8 ksi
309 ton axial load