ENR Formula D8-22

The Engineering News Formula (ENR) was early developed as an easy to use tool for pile capacity estimate based on:
- the number of blows an impact hammers needs to penetrate the pile
- the potential hammer energy

R - pile capacity in tons
Epot. - potential energy of the impact hammer in ft.lbs.
n - number of blows per 1 ft pile penetration
N - number of blows per minute the diesel hammer performs
GRam - weight of diesel hammer piston in lbs.
Today the wave equation analysis (WEAP) is better tool for calculation of the pile capacity. Pileco can perform this service for their customers - fill out the form.

Because the ENR is found in many specifications we show their results in connection with the Pileco Diesel Hammer.

The Pileco Diesel Hammer has 4 different fuel pump settings to regulate the energy output approx. between 50 and 100% of it's capacity. The two ( graphs show the results for the maximum and minimum energy output).




The Pileco slide rule - a handy tool for the job site - calculates the same results.

Choose other diesel hammer sizes



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