Slabs Design
23
ACADEMIC BLOCK FIRST FLOOR Design method Design code IS 456:2000 SLAB NAME: S1(toilet portion) SLAB TYPE Two way slab GRADE OF CONCRETE( f ck) : 30 N/mm 2 GRADE OF STEEL(fy): 415 N/mm 2 Lx: 4.025 m Ly: 5.8 m 200 mm 20 mm 200 mm Span ratio (Ly/Lx): 1.44 Boundary conditions LOADING OF SLAB: Selfweight kN/m 2 Floor Finish kN/m 2 Partitions kN/m 2 Others kN/m 2 Total Dead Load kN/m 2 (a) Live Load kN/m 2 (b) Total Load kN/m 2 (a+b) W Factored Load kN/m 2 (1.5 x W) 5.000 2.000 2.000 10.000 19.000 2.000 21.000 31.500 Leff(short) in (m) 4.2 175 165 Provided Area of steel Bar Dia(mm) Pt 10 100 O.K 0.45 10 200 O.K 0.24 Calculations of Moments and Area of steel Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000 Moments: Mx= αx * Wu* Leff(short) 2 My= αy * Wu* Leff(short) 2 Description Moment coefficients (alpha) Moments in ( KN-m) Area of steel Ast (mm 2 ) Min Ast (mm2) Dia of Bar (mm) Spacing Required (mm) Percentage of steel (Pt) +ve moment in short span 0.0566 31.46 519.56 210.00 10 151.17 0.30 -ve moment in short span 0.0755 41.95 703.41 210.00 10 111.66 0.40 +ve moment in Long span 0.0340 18.89 306.59 198.00 10 256.17 0.19 -ve moment in Long span 0.0453 25.19 412.31 198.00 10 190.49 0.25 Check for Deflection : Span/ depth Ratio (leff/deff) fs Basic Factor Remarks 24.00 215.57367 20 O.K For Long Span 392.70 Modification Factor (a) Allowable deflection (a x b) 1.43 28.50 Thickness of slab: Clear Cover: Width of Beam (Minimum) 4.TWO ADJACENT EDGES DISCONTINUOUS D(eff)short in (mm) D(eff) long in(mm) Spacing in (mm) Ast in (mm 2 ) For Short Span 785.40 Clear dimensions: DESIGN OF SLAB PROJECT NAME: DESIGN ASSOCIATES BUILDING: Limit State Method
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Slabdesign
Transcript of Slabs Design
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S1(toilet portion)
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 4.025 m Ly: 5.8 m
200 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.44
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
5.000 2.000 2.000 10.000 19.000 2.000 21.000 31.500
Leff(short) in (m) 4.2 175 165
Provided Area of steel
Bar Dia(mm) Pt
10 100 O.K 0.45
10 200 O.K 0.24
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0566 31.46 519.56 210.00 10 151.17 0.30
-ve moment in
short span 0.0755 41.95 703.41 210.00 10 111.66 0.40+ve moment in
Long span 0.0340 18.89 306.59 198.00 10 256.17 0.19
-ve moment in
Long span 0.0453 25.19 412.31 198.00 10 190.49 0.25
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
24.00 215.57367 20 O.K
For Long Span 392.70
Modification Factor
(a)
Allowable deflection
(a x b) 1.43 28.50
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
4.TWO ADJACENT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 785.40
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S1
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 4.4 m Ly: 7.85 m
200 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.78
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
5.000 2.000 2.000 2.000 11.000 4.000 15.000 22.500
Leff(short) in (m) 4.575 175 165
Provided Area of steel
Bar Dia(mm) Pt
10 150 Decrease spacing 0.30
provide extra reinforcement
10 200 O.K 0.24
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0922 43.44 730.01 210.00 10 107.59 0.42
-ve moment in
short span 0.1230 57.92 995.52 210.00 10 78.89 0.57+ve moment in
Long span 0.0340 16.01 258.84 198.00 10 303.43 0.16
-ve moment in
Long span 0.0453 21.35 347.61 198.00 10 225.94 0.21
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
26.14 457.64325 20 Increase depth
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
6.TWO LONG EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 523.60
For Long Span 392.70
Modification Factor
(a)
Allowable deflection
(a x b) 0.73 14.59
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 1.8 m Ly: 3 m
200 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.67
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
5.000 2.000 2.000 2.000 11.000 4.000 15.000 22.500
Leff(short) in (m) 1.975 175 165
Provided Area of steel
Bar Dia(mm) Pt
10 200 O.K 0.22
10 200 O.K 0.24
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0631 5.54 88.29 210.00 10 374.00 0.12
-ve moment in
short span 0.0841 7.38 118.00 210.00 10 374.00 0.12+ve moment in
Long span 0.0340 2.98 47.43 198.00 10 396.67 0.12
-ve moment in
Long span 0.0453 3.98 63.32 198.00 10 396.67 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
11.29 128.71688 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
4.TWO ADJACENT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 392.70
For Long Span 392.70
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 5.8 m Ly: 8.05 m
225 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.39
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
5.625 2.000 2.000 2.000 11.625 4.000 15.625 23.438
Leff(short) in (m) 5.997 197 181
Provided Area of steel
Bar Dia(mm) Pt
16 100 O.K 1.02
16 200 O.K 0.56
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0710 59.85 898.54 236.40 16 223.77 0.46
-ve moment in
short span 0.0947 79.80 1228.42 236.40 16 163.68 0.62+ve moment in
Long span 0.0340 28.66 415.23 217.20 16 484.21 0.23
-ve moment in
Long span 0.0453 38.21 559.48 217.20 16 359.37 0.31
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
30.44 147.05937 20 Increase depth
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
6.TWO LONG EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 2010.62
For Long Span 1005.31
Modification Factor
(a)
Allowable deflection
(a x b) 1.42 28.41
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 7.95 m Ly: 8 m
250 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.01
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
6.250 2.000 2.000 2.000 12.250 4.000 16.250 24.375
Leff(short) in (m) 8.15 222 206
Provided Area of steel
Bar Dia(mm) Pt
16 100 O.K 0.91
16 200 O.K 0.49
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0301 48.66 632.31 266.40 16 317.98 0.28
-ve moment in
short span 0.0401 64.88 855.47 266.40 16 235.03 0.39+ve moment in
Long span 0.0275 44.52 576.47 247.20 16 348.78 0.28
-ve moment in
Long span 0.0367 59.37 778.81 247.20 16 258.16 0.38
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
36.71 102.4118 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
3.ONE LONG EDGE DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 2010.62
For Long Span 1005.31
Modification Factor
(a)
Allowable deflection
(a x b) 1.89 37.89
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 8 m Ly: 8.15 m
300 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.02
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
7.500 2.000 2.000 2.000 13.500 4.000 17.500 26.250
Leff(short) in (m) 8.2 272 256
Provided Area of steel
Bar Dia(mm) Pt
16 150 O.K 0.49
16 200 O.K 0.39
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0368 65.03 686.44 326.40 16 292.90 0.25
-ve moment in
short span 0.0491 86.70 927.01 326.40 16 216.89 0.34+ve moment in
Long span 0.0340 60.01 631.68 307.20 16 318.30 0.25
-ve moment in
Long span 0.0453 80.02 852.11 307.20 16 235.96 0.33
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
30.15 166.46395 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
4.TWO ADJACENT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 1340.41
For Long Span 1005.31
Modification Factor
(a)
Allowable deflection
(a x b) 1.76 35.15
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE One way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 2.95 m Ly: 7.95 m
225 mm 20 mm
200 mm
Span ratio (Ly/Lx): 2.69
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
5.625 2.000 2.000 0.000 9.625 4.000 13.625 20.438
Leff(short) in (m) 3.147 197 181
Provided Area of steel
Bar Dia(mm) Pt
16 100 O.K 1.02
16 200 O.K 0.56
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.1000 20.24 290.64 236.40 16 591.00 0.15
-ve moment in
short span 0.0000 0.00 0.00 236.40 16 591.00 0.12+ve moment in
Long span 0.0000 0.00 0.00 217.20 16 905.00 0.12
-ve moment in
Long span 0.0000 0.00 0.00 217.20 16 905.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
15.97 34.794148 20 O.K
For Long Span 1005.31
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
1.INTERIOR PANEL
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 2010.62
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 2.775 m Ly: 4.45 m
200 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.60
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
5.000 2.000 2.000 0.000 9.000 4.000 13.000 19.500
Leff(short) in (m) 2.947 172 156
Provided Area of steel
Bar Dia(mm) Pt
16 100 O.K 1.17
16 200 O.K 0.64
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0416 7.05 114.60 206.40 16 516.00 0.12
-ve moment in
short span 0.0555 9.40 153.28 206.40 16 516.00 0.12+ve moment in
Long span 0.0240 4.06 65.83 187.20 16 468.00 0.12
-ve moment in
Long span 0.0320 5.42 87.93 187.20 16 468.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
17.13 24.709044 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
1.INTERIOR PANEL
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 2010.62
For Long Span 1005.31
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
ACADEMIC BLOCK FIRST FLOOR
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE One way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 2.8 m Ly: 8.25 m
150 mm 20 mm
200 mm
Span ratio (Ly/Lx): 2.95
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.750 2.000 2.000 0.000 7.750 4.000 11.750 17.625
Leff(short) in (m) 2.925 125 115
Provided Area of steel
Bar Dia(mm) Pt
10 200 O.K 0.31
10 200 O.K 0.34
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.1000 15.08 347.66 150.00 10 225.91 0.28
-ve moment in
short span 0.0000 0.00 0.00 150.00 10 375.00 0.12+ve moment in
Long span 0.0000 0.00 0.00 138.00 10 569.13 0.12
-ve moment in
Long span 0.0000 0.00 0.00 138.00 10 569.13 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
23.40 213.09642 20 O.K
For Long Span 392.70
Modification Factor
(a)
Allowable deflection
(a x b) 1.68 33.51
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
2.ONE SHORT EDGE DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 392.70
Clear dimensions:
DESIGN OF SLABPROJECT NAME: DESIGN ASSOCIATES
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S1
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 20 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 4.53 m Ly: 7.3 m
155 mm 20 mm
230 mm
Span ratio (Ly/Lx): 1.61
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.875 1.000 0.000 0.000 4.875 2.000 6.875 10.313
Leff(short) in (m) 4.66 130 121
Provided Area of steel
Bar Dia(mm) Pt
10 125 O.K 0.48
8 150 O.K 0.28
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0617 13.81 309.72 156.00 10 253.59 0.24
-ve moment in
short span 0.0822 18.42 420.80 156.00 10 186.64 0.32+ve moment in
Long span 0.0340 7.61 166.74 145.20 8 301.46 0.14
-ve moment in
Long span 0.0453 10.15 224.44 145.20 8 223.96 0.19
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
35.85 161.20446 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
4.TWO ADJACENT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 628.32
For Long Span 335.10
Modification Factor
(a)
Allowable deflection
(a x b) 1.83 36.58
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S2
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 20 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 4.4 m Ly: 2.7 m
115 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.61
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
2.875 1.000 0.000 0.000 3.875 2.000 5.875 8.813
Leff(short) in (m) 2.791 91 83
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.28
8 200 O.K 0.30
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.0358 -2.46 -73.64 109.20 8 273.00 0.12
-ve moment in
short span -0.0478 -3.28 -97.66 109.20 8 273.00 0.12+ve moment in
Long span 0.0435 2.99 92.90 99.60 8 249.00 0.12
-ve moment in
Long span 0.0580 3.98 124.79 99.60 8 249.00 0.15
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
30.67 104.58246 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME:
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
8.ONE SHORT EDGE CONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S3
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 5.505 m Ly: 3.145 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.57
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 3.246 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 175 O.K 0.28
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.0160 -1.81 -49.22 121.20 8 303.00 0.12
-ve moment in
short span -0.0214 -2.41 -65.48 121.20 8 303.00 0.12+ve moment in
Long span 0.0340 3.83 106.60 111.60 8 279.00 0.12
-ve moment in
Long span 0.0453 5.10 142.86 111.60 8 279.00 0.15
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
32.14 101.56566 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
4.TWO ADJACENT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 287.23
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S4
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 1.875 m Ly: 2.745 m
125 mm 20 mm
175 mm
Span ratio (Ly/Lx): 1.46
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 2.000 7.125 2.000 9.125 13.688
Leff(short) in (m) 1.976 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0905 4.83 135.16 121.20 8 303.00 0.13
-ve moment in
short span 0.0452 2.42 66.94 121.20 8 303.00 0.12+ve moment in
Long span 0.0560 2.99 83.06 111.60 8 279.00 0.12
-ve moment in
Long span 0.0000 0.00 0.00 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
19.56 129.44133 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
9.FOUR EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S5
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 3.5 m Ly: 5.45 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.56
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 4.000 9.125 13.688
Leff(short) in (m) 3.601 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 100 O.K 0.50
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0475 8.43 239.17 121.20 8 210.17 0.24
-ve moment in
short span 0.0633 11.24 322.71 121.20 8 155.76 0.32+ve moment in
Long span 0.0340 6.03 169.50 111.60 8 279.00 0.18
-ve moment in
Long span 0.0000 0.00 0.00 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
35.65 154.53065 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
5.TWO SHORT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 502.65
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 1.88 37.51
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S6
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 3.195 m Ly: 5.405 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 1.69
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 3.295 100 91
Provided Area of steel
Bar Dia(mm) Pt
10 110 O.K 0.71
8 200 O.K 0.28
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0882 10.23 295.62 120.00 10 265.67 0.30
-ve moment in
short span 0.1176 13.64 400.20 120.00 10 196.25 0.40+ve moment in
Long span 0.0340 3.95 111.03 109.20 8 273.00 0.12
-ve moment in
Long span 0.0453 5.26 148.83 109.20 8 273.00 0.16
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
32.95 134.91427 20 O.K
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
6.TWO LONG EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 714.00
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 1.76 35.21
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S7
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 3.195 m Ly: 1.2 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.38
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 1.301 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.0788 -1.42 -38.89 121.20 8 303.00 0.12
-ve moment in
short span -0.1050 -1.90 -51.76 121.20 8 303.00 0.12+ve moment in
Long span 0.0340 0.62 16.91 111.60 8 279.00 0.12
-ve moment in
Long span 0.0453 0.82 22.57 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
12.88 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
4.TWO ADJACENT EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S8
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 1.45 m Ly: 2.745 m
125 mm 20 mm
175 mm
Span ratio (Ly/Lx): 1.89
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 1.551 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0965 2.48 68.74 121.20 8 303.00 0.12
-ve moment in
short span 0.1287 3.31 91.95 121.20 8 303.00 0.12+ve moment in
Long span 0.0340 0.87 24.06 111.60 8 279.00 0.12
-ve moment in
Long span 0.0453 1.17 32.12 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
15.36 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
6.TWO LONG EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S9
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 14.88 m Ly: 1.8 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.12
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 4.000 9.125 13.688
Leff(short) in (m) 1.901 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.9310 -46.05 -1098.22 121.20 8 303.00 0.12
-ve moment in
short span -1.2413 -61.40 -1411.62 121.20 8 303.00 0.12+ve moment in
Long span 0.0340 1.68 46.44 111.60 8 279.00 0.12
-ve moment in
Long span 0.0453 2.24 62.05 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
18.82 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
6.TWO LONG EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S10
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 6.3 m Ly: 4.775 m
180 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.76
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
4.500 1.000 1.000 0.000 6.500 4.000 10.500 15.750
Leff(short) in (m) 4.93 155 145
Provided Area of steel
Bar Dia(mm) Pt
10 150 O.K 0.34
10 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.0085 -3.26 -57.97 186.00 10 422.26 0.12
-ve moment in
short span -0.0114 -4.35 -77.17 186.00 10 422.26 0.12+ve moment in
Long span 0.0340 13.02 237.73 174.00 10 330.37 0.16
-ve moment in
Long span 0.0453 17.35 319.35 174.00 10 245.94 0.22
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
31.81 85.504784 20 O.K
For Long Span 392.70
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
6.TWO LONG EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 523.60
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S11
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 2.6 m Ly: 2.29 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.88
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 2.391 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0256 1.56 43.16 121.20 8 303.00 0.12
-ve moment in
short span 0.0341 2.09 57.66 121.20 8 303.00 0.12+ve moment in
Long span 0.0435 2.66 73.66 111.60 8 279.00 0.12
-ve moment in
Long span 0.0580 3.54 98.56 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
23.67 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
8.ONE SHORT EDGE CONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S12
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 5.405 m Ly: 3.138 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.58
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 3.239 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.0255 -2.86 -77.56 121.20 8 303.00 0.12
-ve moment in
short span -0.0127 -1.43 -38.98 121.20 8 303.00 0.12+ve moment in
Long span 0.0560 6.28 176.54 111.60 8 279.00 0.19
-ve moment in
Long span 0.0000 0.00 0.00 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
32.07 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
9.FOUR EDGES DISCONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S13
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 N/mm2
Lx: 1.55 m Ly: 1.1 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.71
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 1.201 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span -0.0084 -0.13 -3.56 121.20 8 303.00 0.12
-ve moment in
short span -0.0112 -0.17 -4.74 121.20 8 303.00 0.12+ve moment in
Long span 0.0435 0.67 18.44 111.60 8 279.00 0.12
-ve moment in
Long span 0.0580 0.89 24.61 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
11.89 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
8.ONE SHORT EDGE CONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
Staff Housing Part-1&2
Design method
Design code IS 456:2000
SLAB NAME: S13
SLAB TYPE Two way slab
GRADE OF CONCRETE( fck): 30 N/mm2
GRADE OF STEEL(fy): 415 1.9
Lx: 2 m Ly: 1.8 m
125 mm 20 mm
200 mm
Span ratio (Ly/Lx): 0.90
Boundary conditions
LOADING OF SLAB:
Selfweight
kN/m2
Floor Finish
kN/m2
Partitions
kN/m2
Others
kN/m2
Total Dead
Load
kN/m2
(a)
Live
Load
kN/m2
(b)
Total
Load
kN/m2
(a+b)
W
Factored
Load
kN/m2
(1.5 x W)
3.125 1.000 1.000 0.000 5.125 2.000 7.125 10.688
Leff(short) in (m) 1.901 101 93
Provided Area of steel
Bar Dia(mm) Pt
8 200 O.K 0.25
8 200 O.K 0.27
Calculations of Moments and Area of steel
Coefficients αx and αy are calculated as per clause D- 1.1 of IS 456-2000
Moments:
Mx= αx * Wu* Leff(short)2
My= αy * Wu* Leff(short)2
Description
Moment
coefficients
(alpha)
Moments in
( KN-m)
Area of
steel
Ast
(mm2)
Min Ast
(mm2)
Dia of Bar
(mm)
Spacing
Required
(mm)
Percentage of
steel
(Pt)
+ve moment in
short span 0.0286 1.10 30.44 121.20 8 303.00 0.12
-ve moment in
short span 0.0381 1.47 40.65 121.20 8 303.00 0.12+ve moment in
Long span 0.0435 1.68 46.39 111.60 8 279.00 0.12
-ve moment in
Long span 0.0580 2.24 61.99 111.60 8 279.00 0.12
Check for Deflection :
Span/ depth Ratio
(leff/deff)fs
Basic
Factor
Remarks
18.82 116.07504 20 O.K
For Long Span 251.33
Modification Factor
(a)
Allowable deflection
(a x b) 2.00 40.00
Thickness of slab: Clear Cover:
Width of Beam (Minimum)
8.ONE SHORT EDGE CONTINUOUS
D(eff)short in (mm) D(eff) long in(mm)
Spacing in (mm) Ast in (mm2)
For Short Span 251.33
Clear dimensions:
DESIGN OF SLABPROJECT NAME: ESIC-Rajajinagar-Bangalore
BUILDING:
Limit State Method
