Efficiency of a Pile Group
UFC 3-220-01A
for the axial spacing of piles in the group: 3d
for the axial spacing of piles in the group: 6d
La Barré (CSN 73 1002):
where: | nx | - | number of piles in the x direction |
ny | - | number of piles in the y direction | |
ψ | - | angle having tangent | |
s | - | axial spacing of piles | |
d | - | diameter of piles |
, expressed in degreesSeiler-Keeney formula:
where: | nx | - | number of piles in the x direction |
ny | - | number of piles in the y direction | |
s | - | axial spacing of piles |
Input efficiency
User-defined input of the degree of efficiency in the range of 0.5 - 1.0.
Literature:
Pochman, R.; Simek, J.: Pilotove zaklady - Komentar k CSN 73 1002. 1st edition, Prague, Vydavatelstvi norem, 1989, 80 p.
Unified Facilities Criteria (UFC 3-220-01A): Design of deep foundations - Technical instructions, Chapter 5-3, 1997.
Venkatramaiah, C.: Geotechnical Engineering. Second edition, New Delhi (India): New Age International Publishers, 1995.