CEMP-E
EI 02G001
01 July 1997
(3) Vibratory Hammers. At this point, there is no accepted method to determine either the
drivability or the bearing capacity of a pile driven by vibration. In the absence of such a method, figure 2-2a
(metric units) and figure 2-2b (English units) show a guide for determining whether or not a particular pile
can be driven into a particular soil.
Table 2-2. Values of $n.*
Type of Soil
$n
Round Coarse Sand
0.10
Soft Loam/Marl, Soft Loess, Stiff Cliff
0.12
Round Medium Sand, Round Gravel
0.15
Fine Angular Gravel, Angular Loam, Angular Loess
0.18
Round Fine Sand
0.20
Angular Sand, Coarse Gravel
0.25
Angular/Dry Fine Sand
0.35
Marl, Stiff/Very Stiff Clay
0.40
*Where n = i, o, or t depending upon relative position of pile and
soil in question.
Table 2-3. Minimum Peak Acceleration Values.
Minimum Peak
Acceleration n,
Type of Pile
g's
Steel Sheet Piling; H-Beams; Open Ended Pipe
9
Piles
Caissons; Closed Ended Pipe Piles; Heavy Wall
5
Pipe Piles
Concrete and Wood Piles
3
2-13
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