CALCULATION SHEET
DESIGN BY PROJECT SUBJECT
DATE
SHEET NO. DATE JOB NO. CALC NO.
CHECKED BY
Pile Vertical Capacities
Pile Capacity: Pile used
=
Pile Length, Lpile
=
12
m
Depth ingnore for skin friction Li Depth of Frost, D frost
= =
1 4
m m
Pile Cut-off Depth, D cut-off
=
0
m KN/m3
Steel Density, γs
0.42
77
=
Allowable Skin Friction Sand, Less than 5m, σ 1
=
30
kPa
Allowable Skin Friction of Clay/silt, From 5- 15m, σ 2
=
25
kPa
Allowable Skin Friction of Till, From 15- 26m, σ 3
60
kPa
Allowable Skin Friction of Basal Sand, > 26m, σ 4
150
kPa
900
kPa
If pile length more than 15m ,End-Bearing, σ5
=
100 % end bearing taken into account 100 % skin friction taken into account Pile Diameter, dpile
416.00
mm mm
Wall thickness of pile, t Length of Embedment in Till, (Lpile - Li)
=
12.700
=
11.0
m
Upper Pile Surface Friction Area, Aupper = Π dpile(5- Li)
=
5.2
m2
Middle Pile Surface Friction Area, A upper = Π dpile(15-5)
9.1
m2
Middle Pile Surface Friction Area, A upper = Π dpile(26-15)
0.0
m2
0.0
m2
0.136
m2
15.3
KN
138.88
KN
Lower Pile Friction Area, , Alower = Π dpile(Lpile - 26)
=
Surface Area Area of Pile end, Aend = Π r rpile 2 Weight of pile, W pile= Compressive Resistance
=
F.O.S=0.4
100% skin friction
100% end bearing
= =
(σ1*Aupper ) + (σn*Alower )
= =
(σ5*Aend)
138.88 KN
0.00
KN Total allowable
Tensile Resistance to Frost Net Tensi ensile le Resi esistan stance ce to fr frost ost
= =
[(σ1*Aupper ) + (σn*Alower )]*0.7 269.88 KN
Tensile Resistance to Sustained Uplift (F.O.S. = 0.3) Tensile Re Resistance
= =
[(σ1*Aupper ) + (σ2*Alower )]*0.3 115.66 KN
Lateral Capacity of pile
Modulus of Elsticity (E)
200000 Mpa 12 MN/m3
Modulus of Subgrade Reactions (nh) = y0 = Horizontal Load on pile
6 mm
H =
8 KN
Moment of inertia of Pile Ip =
η=
0
( nh/(E x Ip))^1/5=
η.L =
[y0.(EI)^0.6.(nh)^0.4]/HL =
0.44
2.08
0.04
