Question

A precast concrete pile (cross-section 305 mm x 305 mm) is driven by a steam hammer. The following is a set of data available:

• Hammer energy rating = 35 kN-m

• Hammer efficiency = 0.8

• Weight of hammer = 36 kN

• Weight of pile cap = 3.2 kN

• Length of pile = 20.0 m

• Penetration = 25.4 mm over 5 hammer blows

Estimate the allowable (design) pile load,

using Eq. 24.

?? = ?(?)*ℎ /?+? (ENR formula)

this is foundation class, show all details

and please write in a clear handwriting

Answer 1