Design of Wall Footing

8/10/2019 Design of Wall Footing

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Wall Thickness, t 300.00 mm

Height of Soil above the footing, hs 740.00 mm

Thickness of the Footing, hc 477.50 mm

Concrete Cover 75.00 mm

Diameter of Main Reinforcements 25.00 mmEccentricity of Lateral Loads, e 300.00 mm

Effective depth of the Footing, d 390.00 mm

Depth of Embedment, D 1,217.50 mm

For Wall Footings Applied with C

DESIGN O

DESI


2/16

mm

Effective Soil Pressure, qe 176.70 kPaRequired Width of Footing, B 2,200.00 mm

From the Actual Soil Pressure Diagram

Minimum Actual Soil Pressure, qumin 240.00 kPa

Maximum Actual Soil Pressure, qumax 240.00 kPa

Actual Soil Pressure @ Critical Section, qu1 240.00 kPa

Actual Soil Pressure at the Face of Wall, qu2 240.00 kPa

Check for One-Way Shear / Beam-Action Failure

Shear Capacity, Vn 263.12 kN/m

Actual Shear @ Critical Section, Vu1 134.40 kN/m

FOOTING THICKNESS ADEQUACYREMARKS

Adequate

FOOTING DIMENSION DETERMINATIONWidth of Footing, B

2,200.00


3/16


4/16

Thickness of Wall, t

Depth of Embedment, D

Thickness of Footing, hcWidth of Footing, B

Transverse Reinforcements 25.00

Longitudinal Reniforcements 7 25.00

Dowels 25.00

REINFORCEMENTS

D

DIMENSIONS


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DESIGN REFERENCE

I II III IV V

Dead Load, PDL 200.00

Live Load, PLL 180.00

Wind Load, PWL 0.00

Eathquake Load, PEQ 0.00

380.00

I II III IV V

Dead Load, HDL 0.00

Live Load, HLL 0.00

Wind Load, HWL 0.00

Eathquake Load, HEQ 0.00

0.00

I II III IV V

Dead Load, MDL 0.00

Live Load, MLL 0.00

Wind Load, MWL 0.00

Eathquake Load, MEQ 0.00

0.00

Type of Concrete

Compressive Strength of Footing, fc' 28.00 Mpa = 0.85

Compressive Strength of Wall, fc' 28.00 Mpa = 0.85

Yield Strength of Main Reinforcements 280.00 Mpa = 0.0020

Allowable Soil Pressure, qa 200.00 kPaSurcharge, q 0.00 kPa

Unit Weight of Concrete, c 24.00 kN/m3

Unit Weight of Soil, s 16.00 kN/m3

Strength Reduction Factors,

a. Tension-contolled Sections 0.90

b. Shear & Torsion 0.75

c. Bearing 0.65

oncentric Loads, Lateral Loads & Moments

WALL FOOTING

Moments, M (kN-m/m)

Type of Loads LoadLoad Combination

Mu

0.00 0.00 0.00 0.00 0.00

Pu

Concentric Loads, P (kN/m)

Total Pa

Total Ha

Hu

Load

Load

0.00

Lateral Loads, H (kN/m)

Type of Loads

0.00

Load Combination

Total Ma

GN CRITERIA

0.00 0.00

Normal-Weight Concrete

0.00

280.00 528.00 420.00 420.00 0.00 528.00

0.00 0.00

NSCP 2010

Load CombinationType of Loads


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Modification Factor, 1.00

Spacing of Bars 350.00

No. of Long Bars 7

From the Actual Soil Pressure Diagram

Actual Moment @ Critical Section, Mu 108.30 kN-m

Coeffiecient of Resistance, Ru 0.79 Mpa

Required Steel Ratio, req 0.0029

Minimum Steel Ratio Requirements

Approach

Minimum Steel Ratio, min 0.0020

Remarks Use req 0.0029

Area of Steel @ Transverse Direction 1,372.39 mm2

Actual Spacing 357.67 mm

Actual Clear Spacing 332.67 mm

Provided Spacing 350.00 mm

Spacing Requirements

Maximum Spacing, Smax 450.00 mm

3hc 1,432.50 mm

450 mm 450.00 mm

Conservative

For the Transverse Reinforcements

FLEXURAL REINFORCEMENTS


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Remarks, Use S 350.00 mm

Minimum Clear Spacing, Smin 25.40 mm

db 25.00 mm

4/3(Max. Aggregate) 25.40 mm

25mm 25.00 mm

Remarks, Use S 350.00 mm

Spacing, S 350.00 mm

Required No. of Longitudinal Bars 7.00 pcs

Spacing, S 350.00 mm

Wall

Footing

Development for Tension (Transverse Bars)

Coating of BarsFactors,

t 1.30

e 1.00

s 1.00

Checking of Factors

t e 1.30

Required t e 1.30

Cb 87.50 mm

Distance from the nearest concrete surface 87.50 mm

Half of Spacing, S 175.00 mm

Minimum Development Length (ld) 300.00 mm

Basic Development Length (ldb) 446.69 mm

Development Length (ld) 437.11 mm

Actual Development Length (ld) 875.00 mm

Remarks

Development for Compression (Dowels)

At Wall

Minimum Basic Development Length (ldb) 200.00 mm


(0.24fydb)/(fc') 317.49 mm

0.043dbfy 301.00 mm


Remarks

At Footing


DEVELOPMENT LENGTH

Uncoated or Galvanized

Adequate

Adequate

For the Longitudinal Reinforcements

Adequate

Adequate


8/16

(0.24fydb)/(fc') 317.49 mm

0.043dbfy 30.10 mm


Actual Development Length (ld) 352.50 mm

Remarks

If Bending of Bars are Considered

Bend Diameter 150.00 mmActual Splice 465.32 mm

Maximum Length of Bend 950.00 mm

Remarks

mm

mm

mmmm

mm dia. @ 350.00 mm

mm dia. @ 350.00 mm

mm dia. @ 900.00 mm

300.00

1,217.50

477.502,200.00

ETAILING

Adequate

Inadequate: Increase hc or Requires Bending


9/16


10/16

mm

pcs


11/16


12/16


13/16


14/16

- -

1.00 0.75 0.85

1.00 0.75 0.85

Modification Factors


15/16

GENERAL NOTES

1 Text in GREEN is the design input. This where you must type/input the values accordin

2 Text in BLUE is the result of values you have typed/selected.

3 Text in BLACK is for general instructions.


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g to your design specifications

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Design of Wall Footing