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Unformatted text preview: 18 E Rated Hammer Energy Per Blow (ftlb) W P Weight of Pile plus Driving Appurtenances (lb) W r Weight of Hammer Ram (lb) s Pile Set (in/blow) e Coefficient of Restitution FDOT The Florida Department of Transportation under specification 4553.3 (1991) recommends the following bearing formula (FDOT, 1991). P S E R 01 . 1 . 2 + + = (35) where R Safe Bearing Value in Tons P Weight of Pile as Driven, in Tons S Average Penetration per Blow, in Inches E Energy per Blow of Hammer, in FootTons The last formula was used for concrete piles, composite concretesteel piles and steel piles. The bearing capacity obtained using the latter FDOT approach either coincided or exceed the design capacity (suggested FS = 1.0)....
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 Spring '11
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 Deep foundation, Allowable Pile Load

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