Hiley Formula 2
Hiley Formula 2
Hiley Formula 2
:
W = Weight of hammer (Ton.)
2
e = (W +Wp*n ) / (W+Wp)
A = Area of pile
L2 = Height of base at top pile
L = Height of pile (m.)
H = Height of drop (cm.)
Z = Equipment loss fator
Qa = Allowable bearing capacity
FS = Factor of safety
Qu = Ultimate bearing capacity
C = C1+C2+C3
C1 = (1.8*Qu*L2)/A
C2 = (0.72*Qu*L)/A
C3 = (3.6*Qu)/A
Wp = Weight of Pile (Ton.)
n = Coefficient of restitution
Type of pile
HILEY'S FORMULA
0.30 x 0.30 x 7.00
= 3.50
4.50
= 0.7172
0.7642
= 900.00
cm2
= 0.10
m.
= 7.00
m.
cm.
m.
Ton.
= 0.80
=
40
Ton.
= 2.50
= 100.00
Ton.
= 0.98
cm.
= 0.02
cm.
= 0.56
cm.
= 0.40
cm.
= 1.51
Ton.
Wp
= 0.25
Weight of hammer
=
Height of drop H = 40.00
50.00
Last 10 blows
S = 3.13
5.14
Blows per foot N = 96
59
Weight of hammer
=
Height of drop H = 40.00
50.00
Last 10 blows
S = 6.10
8.86
Blows per foot N = 50
34
3.50
60.00
7.15
42
70.00
9.16
33
80.00
11.16
27
Ton.
cm.
cm.
blows.
80.00
17.11
18
Ton.
cm.
cm.
blows.
4.50
60.00
11.61
26
70.00
14.36
21
7.216
= 40.00
e =
0.717
3.50
= 66.00
Ton.
S
C
+
)
10
2
F .S
= 26.40
Ton.
Qu =
eWHZ /(
Qa =
eWHZ
/(