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FOUNDATION CALCULATION SHEET
One-Stop Solution for Foundation
TITLE DESCRIPTION
PROJECT/JOB NO. ACI_SI
PROJECT/JOB NAME ACI
CLIENT NAME SI
SITE NAME 5-6
DOCUMENT NO.
REFERENCE NO.
STRUCTURE NAME ISO SAMPLE
LOAD COMBINATION GROUP NAME
REV DATE DESCRIPTION PREP'D CHK'D APPR'D APPR'D
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Calculation Sheet
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Foundation
Project Na. : ACI
Project No. : ACI_SI
Client : SI
FOUNDATION LISTS
Group Name No. Description No. DescriptionISO-1 1 F1 2 F2
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Calculation Sheet
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Project Na. : ACI
Project No. : ACI_SI
Client : SI
CONTENTS
1. GENERAL
1.1 CODE & STANDARD
1.2 MATERIALS & UNIT WEIGHT
1.3 SUBSOIL CONDITION & SAFETY FACTORS
1.4 LOAD COMBINATION
2. DRAWING
2.1 LOCATION PLAN & DETAIL SKETCH
3. FOUNDATION DATA
3.1 FOOTING AND SECTION DATA
3.2 PIER DATA
3.3 LOAD CASE
3.4 LOAD COMBINATION
4. CHECK OF STABILITY
4.1 CHECK OF SLIDING
4.2 CHECK OF OVERTURNING MOMENT
4.3 CHECK OF CONTACT PRESSURE
5. DESIGN OF FOOTING
5.1 DESIGN MOMENT AND SHEAR FORCE
5.2 REQUIRED REINFORCEMENT
5.3 ONE WAY SHEAR FORCE
5.4 TWO WAY SHEAR FORCE
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Calculation Sheet
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Foundation
Project Na. : ACI
Project No. : ACI_SI
Client : SI
1. GENERAL
1.1 CODE & STANDARDItems Description
Design Code American Concrete Institute (ACI 318) [SI]
Horizontal Force for Wind UNIFORM BUILDING CODE (UBC-1997)
Horizontal Force for Seismic UNIFORM BUILDING CODE [UBC-1997]
Unit System Input : SI, Output : SI, Calculation Unit : SI
1.2 MATERIALS & UNIT WEIGHT
Items Value
Concrete (f'c : compressive strength)
Lean Concrete (Lf'c : compressive strength)
Rs (Soil unit weight)
Rc (Concrete unit weight)
Es (Steel Modulus of Elasticity)
Ec (Concrete Modulus of Elasticity)
- Soil Capacity
Items Value
Soil Name Unit-01
Footing List F1, F2
Qa (Soil Bearing Capacity)
Buoyancy Not Consider
WL (Water Label from the EL = 0) 0 mm
FD (Frost Depth from the EL = 0) 0 mm
Internal Friction Angle
Passive Soil Pressure Not Consider
Cu (Undrained cohesion)
1.3 SUBSOIL CONDITION & SAFETY FACTORSItems Description
Allowable Increase of Soil (Wind) 0 %
Allowable Increase of Soil (Seismic) 0 %
Allowable Increase of Soil (Test) 0 %
Safety factor against overturning for OVM1(FO1) 2
Safety factor against overturning for OVM2(FO2) 2
Safety factor against overturning for OVM3(FO3) 2
Safety factor against overturning for OVM4(FO4) 2
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Reinforcement (D10 ~ D16 , yield strength)
Reinforcement (D19 ~ , yield strength)
27.459 N/mm2
0.000 N/mm2
274.590 N/mm2
411.880 N/mm2
19.613 kN/m3
23.536 kN/m3
196.130 kN/mm2
24.615 kN/mm2
Clay , 0 kN/m2
274.59 kN/m2
0
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Project Na. : ACI
Project No. : ACI_SI
Client : SI
Safety factor against sliding for the SL1(FS1) 1.5
Safety factor against sliding for the SL2(FS2) 1.5
Safety factor against sliding for the SL3(FS3) 1.5
Safety factor against sliding for the SL4(FS4) 1.5
0.35
1.4 LOAD COMBINATION
Index Load Case Name Load Case Description
1 SW SELF WEIGHT
2 DL DEAD LOAD
3 LL LIVE LOAD
4 WL WIND LOAD
Comb . ID Load Combination for stability
1 1.0 SW + 1.0 DL + 1.0 LL
2 1.0 SW + .75 DL + .75 LL + .75 WL
Comb . ID Load Combination for Reinforcement
101 1.4 SW + 1.4 DL + 1.7 LL
102 1.05 SW + 1.05 DL + 1.275 LL + 1.275 WL
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Friction factor (m )
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2. DRAWING REFERENCE DWGSNO. DWG NO. DWG TITLE
N O T E S
* OUTPUT UNIT : mm
ACI PROJECT
FOUNDATION LOCATION P
ISO SAMPLE
S Q U A D C H E C K
P ROC ES S P IP IN G V ES SE LS ST RU CT . E LE C.
SCALE
AS SHOWN
JOB NO.
ACI_SI
MICROFILM
F1
1
F3
3
F4
4
F2
2
A01
1200
A02
12050
A03
3250
A04
04
1 0 0 0
03
1 3 0 0 0
02
1 5 0 0
01
Z X
Y
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OUTPUT UNIT
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REFERENCE DWGSNO. DWG NO. DWG TITLE
N O T E S
* ANCHOR BOLT
1X20-M20 ANC. BOLTS (TYPE TYPE L)
* OUTPUT UNIT : mm
ACI PROJECT
FOUNDATION DETAIL FO
F1
S Q U A D C H E C K
P ROC ES S P IP IN G V ES SE LS ST RU CT . E LE C.
SCALE
AS SHOWN
JOB NO.
ACI_SI
MICROFILM
REV. DATE DESCRIPTION DRWNCHKD APPD APPD APPD
2150
1 1 5 0
3300
3 3 0 0
D19@200
D
1 9 @ 2 0 0
D19@200
D
1 9 @ 2 0 0
5 0 T Y P .TOP BOTTOM
LC FOOTING
FOUNDATION PLAN FOOTING REINF. PLAN
CRUSHED STONE 150 THK
LEAN CONC. 50 THK
2 5 G R .
2 0 0 0
5 0 0
OG EL. + 2000
5 0
8 0
7 5
1 0 0
D 1 6
@ 2 0 0
1 0 0
D25
7 5 P R O J .
SECTION
50
TYP.
D16
36-D25
700
7 0 0
100x7
1 0 0 x 7
PEDESTAL
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OUTPUT UNIT
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REFERENCE DWGSNO. DWG NO. DWG TITLE
N O T E S
* ANCHOR BOLT
1X12-M20 ANC. BOLTS (TYPE TYPE L)
* OUTPUT UNIT : mm
ACI PROJECT
FOUNDATION DETAIL FO
F2
S Q U A D C H E C K
P ROC ES S P IP IN G V ES SE LS ST RU CT . E LE C.
SCALE
AS SHOWN
JOB NO.
ACI_SI
MICROFILM
REV. DATE DESCRIPTION DRWNCHKD APPD APPD APPD
1000
2 0 0 0
4000
4 0 0 0
D19@200
D
1 9 @ 2 0 0
D19@200
D
1 9 @ 2 0 0
5 0 T Y P .TOP BOTTOM
LC FOOTING
FOUNDATION PLAN FOOTING REINF. PLAN
CRUSHED STONE 150 THK
LEAN CONC. 50 THK
2 5 G R .
1 5 0 0
1 0 0 0
6 0 0
OG EL. + 500
5 0
8 0
7 5
1 0 0
D 1 6
@ 2 0 0
1 0 0
D19
7 5 P R O J .
SECTION
50
TYP.
D16
6-D19
1000
3 0
75 75
850
PEDESTAL
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Project No. : ACI_SI
Client : SI
3. FOUNDATION DATA
3.1 FOOTING AND SECTION DATA
700 700
3300
3 3
0 0
The Origin coordinate
The Center of gravity (0,0) mm 5 0 0
2 0 0 0
( mm ) Ft. Name F1
Ft. Type
Area
Ft. Thickness 500.00 mm
Ft. Volume
Ft. Weight 128.154 kN
Soil Height 0.00 mm
Soil Volume
Soil Weight 0.000 kN
Buoyancy Not Consider
Self Weight (except Pr.SW) 128.154 kN
Section Data( mm ) Ft.Name Direction Ft. Volume Soil Volume Pier Wt
F1 All Direct
Sec.Name Section Area Ft. Weight Soil Weight Total Weight
S1
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ISO
10.890 m2
5.445 m3
0.000 m3
10.890 m2
5.445 m3
128.154 kN
0.000 m3
0.000 kN
23.065 kN
151.219 kN
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Project Na. : ACI
Project No. : ACI_SI
Client : SI
f
1000
4000
4 0 0 0
The Origin coordinate
The Center of gravity (0,0) mm 6
0 0
1 5 0 0
1 0 0 0
( mm ) Ft. Name F2
Ft. Type
Area
Ft. Thickness 600.00 mm
Ft. Volume
Ft. Weight 225.946 kN
Soil Height 1000.00 mm
Soil Volume
Soil Weight 298.412 kN
Buoyancy Not Consider
Self Weight (except Pr.SW) 524.357 kN
Section Data
( mm ) Ft.Name Direction Ft. Volume Soil Volume Pier Wt
F2 All Direct
Sec.Name Section Area Ft. Weight Soil Weight Total Weight
S1
3.2 PIER DATA
Off X , Off Y is offset position from the Center of the footing
If Pier Shape is Circle or Circle wall, Pl is a Diameter. and Pw is a Inner Diameter
Area is pier concrete area
Weight is pier and inner soil weight in case circle wall except Tank1 Type(Circle Ring Footing Shape)
Unit( Length : mm , Weight : kN , Area : m2 )
Ft.Name Pr.Name Shape Pl Pw Ph Area Weight Off X Off Y
F1 1 Rectangle 700.000 700.000 2000.000 23.065 500.000 500.000
F2 2 Circle 1000.000 1000.000 1500.000 27.728 -1000.000 0.000
3.3 LOAD CASE
Input the point loads in the global coordinate system direction. Positive directions of moments (shown in the sketch) are
based on the right hand rule.
Fx
Fy
Fz
Mx
My
Mz
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ISO
16.000 m2
9.600 m3
15.215 m3
16.000 m2
9.600 m3
225.946 kN
15.215 m3
298.412 kN
27.728 kN
552.085 kN
0.490
0.785
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Project Na. : ACI
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Index Load Case Name Load Case Description
1 SW SELF WEIGHT
2 DL DEAD LOAD
3 LL LIVE LOAD
4 WL WIND LOAD
Unit( kN , kN-m )
Ft.Name Pr.Name Load Case Fx Fy Fz Mx My
F11
1 0 0 -23.07 0 0
2 0 0 -784.53 0 0
3 0 0 -294.2 0 0
4 147.1 0 0 0 196.13
Footing SW 0.000 0.000 -128.154 0.000 0.000
F22
1 0 0 -27.73 0 0
2 0 0 -882.6 0 0
3 0 0 -196.13 0 0
4 0 117.68 0 -205.94 0
Footing SW 0.000 0.000 -524.357 0.000 0.000
3.4 LOAD COMBINATION
In Pier Top
without Self Weight
In Footing Bottom
with Pier Self Weight,
But without Footing Self Weight,
In Footing Bottom Center
with Pier & Footing Self Weight & Soil Weight,
Case PileType
in centroid of Pile Group
Case NonPileType
in centroid of Footing
3.4.1 Load Combination in Pier Top (Without SW)Unit( kN , kN-m )
Ft.Name Pr.Name L.Comb.
1
1 0.000 0.000 -1078.731 0.000 0.000
2 110.325 0.000 -809.049 0.000 147.100
101 0.000 0.000 -1598.484 0.000 0.000102 187.552 0.000 -1198.863 0.000 250.070
2
1 0.000 0.000 -1078.731 0.000 0.000
2 0.000 88.260 -809.049 -154.455 0.000
101 0.000 0.000 -1569.064 0.000 0.000
102 0.000 150.042 -1176.798 -262.573 0.000
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Fx Fy Fz Mx My
F1
F2
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3.4.2 Load Combination in Footing Bottom (With Pier SW)Unit( kN , kN-m )
Ft.Name Pr.Name L.Comb.
1
1 0.000 0.000 -1101.797 0.000 0.000
2 110.325 0.000 -832.114 0.000 422.912
101 0.000 0.000 -1630.775 0.000 0.000
102 187.552 0.000 -1223.081 0.000 718.950
2
1 0.000 0.000 -1106.459 0.000 0.000
2 0.000 88.260 -836.776 -339.800 0.000
101 0.000 0.000 -1607.883 0.000 0.000
102 0.000 150.042 -1205.912 -577.661 0.000
3.4.3 Load Combination in Footing Bottom Center (With Pier & Footing SW)
Load Combination of Elastic Condition - C.G. of Load is coordinate from left bottom. Unit : mm Unit( kN , kN-m )
Ft.Name L.Comb. C.G. of Loads
1 0.000 0.000 -1229.950 -550.898 550.898 2097.9 , 2097.9
2 110.325 0.000 -960.267 -416.057 838.969 2083.3 , 2083.3
1 0.000 0.000 -1630.817 0.000 -1106.459 1321.5 , 2000.0
2 0.000 88.260 -1361.134 -339.801 -836.776 1385.2 , 2000.0
Load Combination of Ultimate Condition
- C.G. of Load is coordinate from left bottom. Unit : mm Unit( kN , kN-m )
Ft.Name Sec.Na L.Comb. C.G. of Loads
S1101 0.000 0.000 -1810.190 -815.388 815.388 2113.6 , 2113.6
102 187.552 0.000 -1357.643 -611.541 1330.490 2102.6 , 2102.6
S1101 0.000 0.000 -2341.983 0.000 -1607.883 1245.9 , 2000.0
102 0.000 150.042 -1756.487 -577.661 -1205.912 1303.0 , 2000.0
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Fx Fy Fz Mx My
F1
F2
Fx Fy Fz Mx My
F1
F2
Fx
Fy
Fz
Mx
My
F1
F2
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Project Na. : ACI
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4. CHECK OF STABILITY
4.1 CHECK OF SLIDING
Formula : (m
Fz + P.F
Fxor
m
Fz + P.F
Fy) > Fs -> OK (Uni-Axial)
P.F = Passive Force (apply only in case checked passive force, mark by P) Unit ( kN )
Ft.Name Dir. L.Comb. Fs(i) Result
F1X 2 1.5
Y 2 1.5
F2X 2 1.5
Y 2 1.5
4.2 CHECK OF OVERTURNING MOMENT
Formula : ( Mry / Moy or Mrx / Mox) > OVM(i) -> OK Unit ( kN-m )
Ft.Name Dir. L.Comb. OVM(i) Result
F1X 2 2 NG
Y 2 2 OK
F2X 1 2 OK
Y 1 2 OK
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( m Fz + P.F) / Fx or (m Fz + H.P.F) / Fy
0.35 960.27 / 110.32 = 3.05 OK
Fy = 0 , Then N/A OK
Fx = 0 , Then N/A OK
0.35 1361.13 / 88.26 = 5.4 OK
Mry / Moy = OVM or Mrx / Mox = OVM
1584.44 / 838.97 = 1.89
1584.44 / 416.06 = 3.81
-3261.63 / -1106.46 = 2.95
Mo = 0 , Then N/A
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4.3 CHECK OF CONTACT PRESSURE
4.3.1 Contact Pressure Formula
'Handbook CONCRETE ENGINEERING' Second Edition edited by Mark Fintel
q1,q2 =Fz
Af
My X(i)
Iy or
Mx Y(i)
Ix
if q1 or q2 < 0 , than q1 and q2 will be recalculated
by following formula
Px =
L
0 q(x) width (x) X dx
L
0 q(x) width (x) dx
P =L
0 q(x) width (x) dx
4.3.2 Input Data
Ft.Name
F1
F2
4.3.3 Pressure Check
- Qa = Soil bearing capacity
- Uc = Uplift Allowable capacity
- X-Direction (Uni-Axial) Unit( kN , kN-m , kN/m2 )
Ft.Name L.Comb. q1 q2 ci cj Qmax Qa Cont.A.R Result
F1 2
F2 1
- Y-Direction (Uni-Axial) Unit( kN , kN-m , kN/m2 )
Ft.Name L.Comb. q1 q2 ci cj Qmax Qa Cont.A.R ResultF1 2
F2 1
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Af (m2
) Fl (m ) Fw (m ) Ix (m4
) Iy (m4
)
10.890 3.300 3.300 9.8827 9.8827
16.000 4.000 4.000 21.3333 21.3333
0.000 249.887 0.971 3.300 249.887 70.57 % OK274.586(gross)
205.672 0.000 0.000 3.965 205.672 99.11 % OK274.586(gross)
18.714 157.643 0.000 3.300 157.643 100 % OK274.586(gross)
101.926 101.926 0.000 4.000 101.926 100 % OK274.586(gross)
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Project Na. : ACI
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5. DESIGN OF FOOTING
5.1 DESIGN MOMENT AND SHEAR FORCEFooting design is in accordance with unltimate strength method at footing bottom.
Calculated total pier load as
Q = Fz - Self Weight Factor (Soil Weight + Footing Weight)
Ft.Name : Footing Name, Sec.Name : Strip Name for Footing Reinforcement Design
Dir. : Direction, L.Comb. : Load Combination Index, Fl or Fw : Footing Length or Footing Width, Sl or Sw : Strip X or Y width
5.1.1 DataUnit( mm , kN , kN-m )
Ft.Name Sec.Na Dir. L.Comb. Fl or Fw Sl or Sw
F1
S1 X101 3300.00 3300.00 1810.190 815.39 1630.775
102 3300.00 3300.00 1357.643 1330.49 1223.081
S1 Y101 3300.00 3300.00 1810.190 -815.388 1630.775
102 3300.00 3300.00 1357.643 -611.541 1223.081
F2
S1 X101 4000.00 4000.00 2341.983 -1607.88 1607.883
102 4000.00 4000.00 1756.487 -1205.91 1205.912
S1 Y101 4000.00 4000.00 2341.983 0.000 1607.883
102 4000.00 4000.00 1756.487 -577.661 1205.912
5.1.2 Design Parameters
Yield Strength - D10 ~ D16 : f y1 , D19 ~ : f y2
f_cl : Clear Cover for edge of footing reinforcement
f_clt : Clear Cover for top of footing reinforcement
f_clb : Clear Cover for bottom of footing reinforcement
Loc. : Location of Critical Point from left side of footing
Unit(N/mm2,mm)
f'c fy1 fy2 f_cl f_clt f_clb
0.9 0.85 27.46 274.59 411.88 50.0 50.0
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Fz M Q
80.0
f(Flexure) f(Shear)
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Calculation Sheet
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Project Na. : ACI
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5.2 REQUIRED REINFORCEMENT
5.2.1 Reinforcement Formula
- Shrinkage and temperature reinforcement
As = fac b h , fac = 0.002 ---- ACI CODE 7.12.2
- Required Reinforcement by Analysis
As As 2
- At every section of flexural members where tensile reinforcement is required
As As 5
As As 4
- The requirements of Eq (6.3.2) need not be applied, if every section As provided is
at least one -third greater than that required by analysis
As2 = r .req b d
As3 = 1.333 r .req b d
As4 =1.4
f yb d
As5 =0.25 f ck
f yb d
Asmax = 0.75r b b d
r b = 0.85
b 1 f ck
f y
0.003 Es
0.003 Es + f y
Selected As = Max ( As1 , As2 , Min ( As3 , Max ( As4 , As5 ) ) )
If Selected As < Using As < As max , then OK!!
Note : The reinforcement is calculated bases on the maximum moment under the foundation in each direction.
But, the 'ISO' , 'OCT' , 'HEX' , 'COMB' , 'TANK1' foundations are calaulated as face pier
Where,
Rn =Mu
f
bd2 ,
f
= 0.9 ,r
.req =0.85 fck
fy ( 1 - 1 -
2Rn
0.85fck )
5.2.2 Check of Footing Reinforcement
Footing Name : F1 GroupType : Isolated
- X direction (All Width)
Sec.Nam L.Comb. Using Bar (mm) Width b (m) d (mm)
S1102 top 1.650 3.300 440.450 4870.860
101 botom 1.800 3.300 410.450 4870.860
Sec.Nam L.Comb.
S1102 top - -
101 bottom 0.850 0.0021
Sec.Nam L.Comb.
S1102 top 1485.000 - - 4940.466 4622.983 30886.720
101 bottom 1485.000 2849.486 3798.365 4603.961 4308.102 28782.960
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Loc. (m) As (mm2
)
17 - D19 @ 200
17 - D19 @ 200
Mu (kN-m) Rn r
.Req
-
425.503
As1(mm2
) As2(mm2
) As3(mm2
) As4(mm2
) As5(mm2
) Asmax(mm2
)
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Calculation Sheet
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Project Na. : ACI
Project No. : ACI_SI
Client : SI
Sec.Nam L.Comb. Result
S1
102 top 4870.860 1485.000
101 bottom 4870.860 3798.365
- Y direction (All Width)
Sec.Nam L.Comb. Using Bar (mm) Width b (m) d (mm)
S1102 top 1.650 3.300 421.350 4870.860
101 botom 1.800 3.300 391.350 4870.860
Sec.Nam L.Comb.
S1102 top - -
101 bottom 0.935 0.0023
Sec.Nam L.Comb.
S1102 top 1485.000 - - 4726.225 4422.508 29547.330
101 bottom 1485.000 2994.331 3991.443 4389.719 4107.627 27443.560
Sec.Nam L.Comb. Result
S1102 top 4870.860 1485.000
101 bottom 4870.860 3991.443
Footing Name : F2 GroupType : Isolated
- X direction (All Width)
Sec.Nam L.Comb. Using Bar (mm) Width b (m) d (mm)
S1102 top 2.000 4.000 540.450 6016.944
101 botom 1.443 4.000 510.450 6016.944
Sec.Nam L.Comb.
S1102 top - -
101 bottom 0.835 0.0021
Sec.Nam L.Comb.
S1102 top 2160.000 - - 7348.063 6875.863 45938.490
101 bottom 2160.000 4214.377 5617.765 6940.177 6494.188 43388.480
Sec.Nam L.Comb. Result
S1102 top 6016.944 2160.000
101 bottom 6016.944 5617.765
- Y direction (All Width)
Sec.Nam L.Comb. Using Bar (mm) Width b (m) d (mm)
S1102 top 2.000 4.000 521.350 6016.944
102 botom 2.443 4.000 491.350 6016.944
10/16/2015
Copyright (c) GS E&C. All Rights Reserved
Select As(mm2
)Using As(mm2
)
OK
OK
Loc. (m) As (mm2
)
17 - D19 @ 200
17 - D19 @ 200
Mu (kN-m) Rn r .Req
-
425.502
As1(mm
2
) As2(mm
2
) As3(mm
2
) As4(mm
2
) As5(mm
2
) Asmax(mm
2
)
Select As(mm2
)Using As(mm2
)
OK
OK
Loc. (m) As (mm2
)
21 - D19 @ 200
21 - D19 @ 200
Mu (kN-m) Rn r .Req
-
782.920
As1(mm2
) As2(mm2
) As3(mm2
) As4(mm2
) As5(mm2
) Asmax(mm2
)
Select As(mm2
)Using As(mm2
)
OK
OK
Loc. (m) As (mm2
)
21 - D19 @ 200
21 - D19 @ 200
7/17/2019 ACI
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Page 19
Calculation Sheet
of
Foundation
Project Na. : ACI
Project No. : ACI_SI
Client : SI
Sec.Nam L.Comb.
S1
102 top - -
102 bottom 0.836 0.0021
Sec.Nam L.Comb.
S1102 top 2160.000 - - 7088.375 6632.863 44314.980
102 bottom 2160.000 4063.980 5417.285 6680.490 6251.189 41764.970
Sec.Nam L.Comb. Result
S1102 top 6016.944 2160.000
102 bottom 6016.944 5417.285
5.3 ONE WAY SHEAR FORCE
5.3.1 One-Way Shear Formula - f Vc = 0.85 1/6 f ck B'w d
- Vu <= f Vc , then OK!!
5.3.2 Check of One-Way Shear
Footing Name : F1 GroupType : Isolated PileType : False
3300
3 3 0 0
2910
1 4 0 9
Unit : mm
- X direction One-Way Shear (All Width)
Sec.Nam L.Comb. Result
S1 102 2910 410.45 3300 1005.505 475.729 OK
- Y direction One-Way Shear (All Width)
Sec.Nam L.Comb. Result
S1 101 1409 391.35 3300 958.715 410.192 OK
10/16/2015
Copyright (c) GS E&C. All Rights Reserved
Mu (kN-m) Rn r .Req
-
726.706
As1(mm2
) As2(mm2
) As3(mm2
) As4(mm2
) As5(mm2
) Asmax(mm2
)
Select As(mm2
)Using As(mm2
)
OK
OK
Loc. (mm) d (mm) Bw (mm) f
Vc (kN) Vu (kN)
Loc. (mm) d (mm) Bw (mm) fVc (kN) Vu (kN)
7/17/2019 ACI
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Page 20
Calculation Sheet
of
Foundation
Project Na. : ACI
Project No. : ACI_SI
Client : SI
Footing Name : F2 GroupType : Isolated PileType : False
4000
4 0 0 0
1953
2 9 3 4
Unit : mm
- X direction One-Way Shear (All Width)
Sec.Nam L.Comb. Result
S1 101 1953 510.45 4000 1515.735 595.403 OK
- Y direction One-Way Shear (All Width)
Sec.Nam L.Comb. Result
S1 102 2934 491.35 4000 1459.019 637.361 OK
10/16/2015
Copyright (c) GS E&C. All Rights Reserved
Loc. (mm) d (mm) Bw (mm) fVc (kN) Vu (kN)
Loc. (mm) d (mm) Bw (mm) fVc (kN) Vu (kN)
7/17/2019 ACI
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Page 21
Calculation Sheet
of
Foundation
Project Na. : ACI
Project No. : ACI_SI
Client : SI
5.4 TWO WAY SHEAR FORCE
5.4.1 Two-Way Shear Formula
Vu = Fz Shade Ratio
f Vc1 = 0.85 1/6 (1 + 2/ b c) f ck bo d
f Vc2 = 0.85 1/6 (1 + s d / 2 bo) f ck bo d
f Vc3 = 0.85 1/3 f ck bo d
f Vc = Min(f Vc1 , f Vc2 , f Vc3)
Vu f Vc , then OK
where
b c = ratio of long side to short side of the column, concentrated load or reaction area
s = 40 for interior colimns
= 30 for edge columns
= 20 for corner columns
bo = perimeter of critical section
Shade Ratio =Footing Area - Punching Area
Footing Area
5.4.2 Check of Two-WayShear
3300
3 3 0 0
1
Ft.Name F1 Punching Area
Pr.Name 1 Ratio Shade
Shape Rectangle
L.Comb. 101
Pl 700 mm
Pw 700 mm
bo / d 4441.8 / 410.45 mm Vu
1 / 40 Result
4000
4 0 0 0
2
Ft.Name F2 Punching Area
Pr.Name 2 Ratio Shade
Shape Circle
L.Comb. 101
Pl 1000 mm
Pw 1000 mm
bo / d 4743.31 / 510.45 mm Vu
1 / 40 Result
10/16/2015
bc / s
f Vc1
f Vc2
f Vc3
f Vc
1.233 106 mm
2
0.887
4060.229 kN
3854.680 kN
2706.820 kN
2706.820 kN
1446.119 kN
OK
bc / s
f Vc1
f Vc2
f Vc3
f Vc
1.789 106 mm
2
0.888
5392.204 kN
5665.936 kN
3594.802 kN
3594.802 kN
1428.104 kN
OK