Sample Problem - 4 Pile Raft
RCDC
FE
Mumbai. India. Web: www.S-cube.in: Email:
[email protected]
RCDC FE
Contents Analysis Model 3D & Plan ............... .......................... ..................... ..................... ..................... ..................... ..................... ..................... .............. ... 2 RCDC FE 3D &Plan ....................................................................................................... 3 Reinforcement View .................................................................................................... 4 Required Reinforcement Contour .................... .............................. ..................... ..................... ..................... ...................... ................. ......5 Provided Reinforcement Reinf orcement Contour ........................... ............. ............................ ............................ ............................ ......................... ........... 6 Reinforcement Efficiency............................................................................................. 7 Drawings ...................................................................................................................... 8 BOQ ........................................................................................................................... 11 Design Calculation ..................................................................................................... 12
Analysis Model 3D & Plan
RCDC FE
RCDC FE 3D &Plan
RCDC FE
Reinforcementt View Reinforcemen
RCDC FE
Required Reinforcement Contour
RCDC FE
Provided Reinforcement Contour
RCDC FE
Reinforcementt Efficiency Reinforcemen
RCDC FE
Drawings: Plan
RCDC FE
Drawings: Bottom Reinforcement Plan
RCDC FE
Drawings: Top Reinforceme Reinforcement nt Plan
RCDC FE
RCDC FE
BOQ File Type
: Pile Raft
Project Name
: Demo Project
Client Name
: Demo Client
Engineer Name
: Demo Engineer
Design File
: C:\PF-25.RCFX
Analysis File
: C:\PR25.mdb
Analysis Last Modified : 16-11-2017 12:06:51 No.
Material
Unit
Quantity
Rate ₹
Cost ₹
1
Concrete M30
(cuM)
2339.95
7000.00
16379650
2
Steel T10 (Fe500)
(kg)
5186.00
60.00
311160
3
Steel T12 (Fe500)
(kg)
12799.00
60.00
767940
4
Steel T16 (Fe500)
(kg)
29575.00
60.00
1774500
5
Steel T20 (Fe500)
(kg)
17013.00
60.00
1020780
6
Steel T25 (Fe500)
(kg)
3168.00
60.00
190080
7
Steel T32 (Fe500)
(kg)
5515.00
60.00
330900
Sub Total 8
Shuttering
43,95,360 (sq.M)
1693.50
600.00
Grand Total
1016099 2,17,91,108
Design Metrics
1 Consumption : Steel/Concrete ratio
= 31.31 kg/cuM
2 Concrete % M30
= 100.00 %
3 Shuttering
= 100.00 %
RCDC FE
Design Calculation File Type
: Pile Raft
Project Name
: Demo Project
Client Name
: Demo Client
Engineer Name
: Demo Engineer
Design File
: C:\ PF-25.RCFX
Analysis File
: C:\PR25.mdb
Analysis Last Modified : 16-11-2017 12:06:51
Definitions Of Terms: Maximum spacing of main steel is smaller of 3*Deff. and 300 mm. Maximum spacing of Distribution steel is smaller of 5*Deff and 450mm. All forces in units kN and m 1 acr
=
Distance from the point considered to the surface of the nearest longitudinal bar in mm
2 barea
=
Effective punching area in Sqmm
3 Bc
=
Column/Wall Length to width ratio
4 bpm
=
Effective punching perimeter in mm
5 COLb
=
Column/ wall Minor dimension
6 COLd
=
Column/ wall Major dimension
7 Ec
=
Modulus of elasticity of concrete in N/Sqmm
8 Es
=
Modulus of elasticity of steel in N/Sqmm
9 Fc
=
Maximum Compressive Stress in the concrete
10 Fck
=
Characteristic compressive strength of concrete cube in N/Sqmm
11 Fst
=
Stress in steel in N/Sqmm
12 Fy
=
Yield Stress of Reinforcement in N/Sqmm
13 Icr
=
Moment of Inertia of Cracked Section
RCDC FE
14 Igr
=
Gross moment of Inertia in mm
15 Ieff
=
Effective Moment of Inertia
16 Ks
=
Shear factor for Colun/Wall size
17 Mux
=
Design moment along X direction in kN-m
18 Muy
=
Design moment along Y direction in kN-m
19 Pu
=
Factored axial load in column/Wall in kN
20 SLdeff
=
Effective depth of Slab in mm
21 sp
=
Spacing Between bars at outer most layer in mm
22 Spu
=
Ultimate average upward soil pressure in kN/Sqm
23 Tc
=
Permissible Shear stress in concrete in N/Sqmm
24 Tce
=
Final Concrete Shear Stress in N/Sqmm
25 Tv
=
Maximum design punching shear stress for Column/Wall in N/Sqmm
26 Vc
=
Shear resisted by Concrete in kN
27 Vcr
=
Design shear force at critical section from the face of the column/Wall in kN
28 Vs
=
Shear resisted by shear reinforcement in kN
29 Wcr
=
Surface Crack Width in mm
30 Xact
=
Actual depth of natural axis
31
ε1
=
Strain at the level considered, calculated ignoring the stiffening of the concrete in the tension zone
32
εm
=
Average steel strain at the level considered
RCDC FE
Code Reference IS 456 Element
Clause / table
1 Ptmin
=
26.5.2.1
2 Ptcalculated
=
38
3 Shear Strength Of Concrete
=
40.3
4 Modification Factor for Shear
=
40.2.1.1
5 Max Nominal Shear Stress
=
40.2.3
6 Basic Span To Depth Ratio
=
23.2.1
7 Spacing Between Main Bars
=
26.3.3
8 Spacing Between Distribution Bars
=
26.3.3
9 Transfer Of Bending Moment To Column//Wall
=
31.3.3
10 Shear In Flat Slab
=
31.6
11 Flat Slab Reinforcement
=
31.7
12 Calculation Of Deflection
=
Annex-C
13 Crack Width Calculation
=
Annex-F
14 Cracking of Concrete
=
Clause 35.3.2
15 Short Term Deflection
=
Annex-C, C-2
16 Ieff
=
Annex-C,C-2.1
17 Deflection Due To Shrinkage
=
Annex-C, C-3
18 Deflection Due to Creep
=
Annex-C, C-4
RCDC FE
General Data: Design Code
= IS 456
Grade Of Concrete
= M30
Grade Of Steel
= Fe500
Clear cover Top
= 50
mm
Clear cover Bottom
= 50
mm
TopX Through Ast Required
= 750
sqmm/m
Ast Provided
= 754
sqmm/m
Reinforcement
= T12@150C/C (MESH)
TopY Through Ast Required
= 750
sqmm/m
Ast Provided
= 754
sqmm/m
Reinforcement
= T12@150C/C (MESH)
BottomX Through Ast Required
= 1334.89
sqmm/m
Ast Provided
= 1340.4
sqmm/m
Reinforcement
= T16@150C/C (MESH)
RCDC FE
Zone in Bottom @ X Critical Element
= Z100
Region
= S11
Critical Load Combination
= 1.5 DEAD +1.5 LIVE
SLdeff
= 1187.5
mm
Mux
= 718.46
kNm/m
Ast Required
= 1425
sqmm/m
Ast Required - min
= 1500
sqmm/m
Ast Provided Through
= 1340.4
sqmm/m
Ast Provided Extra
= 523.6
sqmm/m
Ast Provided Total
= 1864
sqmm/m
Reinforcement
= T10@150C/C
BottomY Through Ast Required
= 1334.91
sqmm/m
Ast Provided
= 1340.4
sqmm/m
Reinforcement
= T16@150C/C (MESH)
RCDC FE
Design For Punching Shear Around Column/Wall Critical Element
= C13
COLd
= 700
mm
COLb
= 700
mm
Critical Load Combination
= 1.5 DEAD +1.5 LIVE
SLDeff
= 1175
mm
bpm
= 7500
mm
barea
= 8812500
sqmm
Pu
= 5470.7
kN
Vcr
= 5470.7
kN
Tv
= 0.62
N/sqmm
Tc
= 1.37
N/sqmm
Bc
= 1
Ks
= 1
Tce
= 1.37
Tv < Tce
Ok
N/sqmm
RCDC FE
Design For Punching Shear Around Pile Critical Element
= P11
Pile Dia
= 600
mm
SLDeff
= 675
mm
bpm
= 4005.53
mm
barea
= 2703733
sqmm
Compression capacity of pile
= 1200
kN
Load Facor(LF)
= 1.5
kN
Pu
= 1200 * LF = 1800
kN
Tv
= 0.67
N/sqmm
Tc
= 1.37
N/sqmm
Bc
= 1
Ks
= 1
Tce
= 1.37
Tv < Tce
Ok
N/sqmm
