Design of Wall Footing

DESIGN OF WALL FOOT

For Wall Footings Applied with Concentric Loads, Lat

DESIGN CRITERIA

Wall Thickness, t Height of Soil above the footing, hs

300.00 mm 740.00 mm

Thickness of the Footing, hc Concrete Cover Diameter of Main Reinforcements Eccentricity of Lateral Loads, e

477.50 75.00 25.00 300.00

Effective depth of the Footing, d Depth of Embedment, D

mm mm mm mm

390.00 mm 1,217.50 mm

FOOTING DIMENSION DETERMINATION Effective Soil Pressure, qe Required Width of Footing, B

FOOTING THICKNESS ADEQUACY

Width of Footing, B 2,200.00 mm 176.70 kPa 2,200.00 mm

REMARKS Adequate

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, φVn Actual Shear @ Critical Section, Vu1

263.12 kN/m 134.40 kN/m

BEARING REINFORCEMENT Diameter of Bars for Dowels Yield Strength of Dowels Bearing Strength, φPnb At Wall At Footing Ultimate Bearing Capacity, Pn Remarks Minimum Dowel Requirement Minimum Area of Dowel Reinforcement No. of Bars Spacing

REMARKS Dowels are NOT Required 25.00 280.00 4,641.00 4,641.00 9,282.00

mm Mpa kN/m kN/m kN/m

528.00 kN/m Dowels are NOT Required

1,500.00 mm2 4 pcs 900.00 mm

Spacing Requirements as Specied by the Code Minimum Clear Spacing, Smin 25.40 mm db 4/3(Max. Aggregate) 25mm Remarks Dowel Requirement (If Dowels are REQUIRED) Excess Load, Pe

25.00 mm 25.40 mm 25.00 mm Ok for Rebar Clear Spacing

N/A kN/m

No. of Bars

N/A mm2 N/A pcs

Spacing

N/A mm

Required Area of Dowel Reinforcement

Spacing Requirements as Specied by the Code Minimum Clear Spacing, Smin N/A mm db 25.00 mm 4/3(Max. Aggregate) 25.40 mm 25mm 25.00 mm Remarks

N/A

DETAILING

DIMENSIONS Thickness of Wall, t Depth of Embedment, D Thickness of Footing, hc Width of Footing, B

Transverse Reinforcements Longitudinal Reniforcements Dowels

REINFORCEMENTS 25.00 7 25.00 25.00

SIGN OF WALL FOOTING

plied with Concentric Loads, Lateral Loads & Moments

DESIGN CRITERIA NSCP 2010

DESIGN REFERENCE

Type of Loads

Load

Dead Load, PDL

200.00

Live Load, PLL

180.00

Wind Load, PWL Eathquake Load, PEQ Total Pa

Type of Loads

0.00

280.00

528.00

420.00

Pu

V

420.00

0.00

528.00

0.00 380.00 Lateral Loads, H (kN/m) Load Combination I II III IV

Load

Dead Load, HDL

0.00

Live Load, HLL

0.00

Wind Load, HWL

0.00

Eathquake Load, HEQ Total Ha

0.00 0.00

Type of Loads

Concentric Loads, P (kN/m) Load Combination I II III IV

0.00

0.00

Live Load, MLL

0.00

Wind Load, MWL

0.00

Eathquake Load, MEQ Total Ma

0.00 0.00

0.00

0.00

Moments, M (kN-m/m) Load Combination I II III IV

Load

Dead Load, MDL

0.00

0.00

Type of Concrete Compressive Strength of Footing, fc'

0.00

0.00

Hu

V

0.00

Mu

V

0.00

0.00

Normal-Weight Concrete 28.00 Mpa

Compressive Strength of Wall, fc' Yield Strength of Main Reinforcements Allowable Soil Pressure, qa Surcharge, q Unit Weight of Concrete, γc Unit Weight of Soil, γs

28.00 280.00 200.00 0.00 24.00 16.00

Strength Reduction Factors, φ a. Tension-contolled Sections b. Shear & Torsion c. Bearing

0.90 0.75 0.65

Mpa Mpa kPa kPa kN/m3 kN/m3

0.00

β =

0.85

β = ρ =

0.85 0.0020

0.00

Modification Factor, λ

1.00

FLEXURAL REINFORCEMENTS

Spacing of Bars No. of Long Bars

From the Actual Soil Pressure Diagram Actual Moment @ Critical Section, Mu

350.00 7

108.30 kN-m

For the Transverse Reinforcements Coeffiecient of Resistance, Ru Required Steel Ratio, ρreq Minimum Steel Ratio Requirements Approach Minimum Steel Ratio, ρmin Remarks Area of Steel @ Transverse Direction Actual Spacing Actual Clear Spacing Provided Spacing Spacing Requirements Maximum Spacing, Smax 3hc 450 mm

0.79 Mpa 0.0029

Conservative 0.0020 Use ρreq 0.0029 1,372.39 357.67 332.67 350.00

mm2 mm mm mm

450.00 mm 1,432.50 mm 450.00 mm

Remarks, Use S

350.00 mm

Minimum Clear Spacing, Smin db 4/3(Max. Aggregate) 25mm Remarks, Use S

25.40 25.00 25.40 25.00 350.00

Spacing, S For the Longitudinal Reinforcements Required No. of Longitudinal Bars Spacing, S

350.00 mm 7.00 pcs 350.00 mm

Adequate Adequate

Wall Footing

DEVELOPMENT LENGTH

mm mm mm mm mm

Development for Tension (Transverse Bars) Uncoated or Galvanized Coating of Bars Factors, ψ ψt 1.30 ψe 1.00 ψs 1.00 Checking of Factors ψt ψe Required ψt ψe Cb Distance from the nearest concrete surface Half of Spacing, S

1.30 1.30 87.50 mm 87.50 mm 175.00 mm

Minimum Development Length (ld)

300.00 mm

Basic Development Length (ldb) Development Length (ld) Actual Development Length (ld) Remarks

446.69 mm 437.11 mm 875.00 mm Adequate

Development for Compression (Dowels) At Wall Minimum Basic Development Length (ldb)

200.00 mm

Basic Development Length (ldb) (0.24fydb)/(λfc')

317.49 mm 317.49 mm

0.043dbfy Development Length (ld) Remarks

301.00 mm 873.19 mm Adequate

At Footing Basic Development Length (ldb)

317.49 mm

(0.24fydb)/(λfc')

317.49 mm

0.043dbfy 30.10 mm Development Length (ld) 873.19 mm Actual Development Length (ld) 352.50 mm Inadequate: Increase hc or Requires Bending Remarks If Bending of Bars are Considered Bend Diameter Actual Splice Maximum Length of Bend Remarks

DETAILING

SIONS 300.00 1,217.50 477.50 2,200.00

mm mm mm mm

CEMENTS mm dia. @ mm dia. @ mm dia. @

350.00 mm 350.00 mm 900.00 mm

150.00 mm 465.32 mm 950.00 mm Adequate

mm pcs

Adequate Adequate

CODE NSCP 2001 NSCP 2010

Strength-Reduction Factors Tension-controlled Shear & Torsion Bearing on Conrete Sections 0.90 0.85 0.70 0.90 0.75 0.65

Conservative More Conservative

Epoxy-Coated Other Epoxy-coating Uncoated or Galvanized

1.50 1.20 1.00

Modification Factors Normal-Weight Lightweight Sand-lightweight Concrete Concrete Concrete 1.00 0.75 0.85 1.00 0.75 0.85

GENERAL NOTES

1 Text in GREEN is the design input. This where you must type/input the values according to your design spe 2 Text in BLUE is the result of values you have typed/selected. 3 Text in BLACK is for general instructions.

es according to your design specifications