Spread Footing Analysis & Design Charts:

• Introduction

• Notations

• Main Chart

Concentric Load:

• Preliminary Size

• Ultimate Forces

Eccentric Loads:

• Preliminary Size

• Ultimate Soil Pressure with Flexural Equations

• Ultimate Soil Pressure with Equilibrium Equations

Footing Design:

• One Way Shear Capacity

• Two Way Shear Capacity

• Reinforcement

• Tension Rebar Development

• Concrete Bearing

• Dowels Rebar Development

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Concrete Beam Design Charts:

• Introduction

• Notations

• Moment Strength of Rectangular Beam

• Rectangular Beam:

  • with Tension Reinforcement

  • with Tension & Compression Reinforcement:

    • Page 1

    • Page 2

• Moment Strength of T-Section Beam

  • T-Section Case 1

  • T-Secetion Case 2

Beam Shear Design

• Introduction

• Notations

• Beam Shear Basic Chart

• Beam Shear Detailed Chart:

  • Page 1

  • Page 2

  • Page 3

  • Page 4

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Concrete Column Design Charts:

• introduction

• Notations

Interaction Diagram Points:

• Interaction Diagram Main Points

• Axial Compression at Zero Eccentricity

• Maximum Compression Load at zero Eccentricity

• Strength Reduction Factor f

• Maximum Moment Strength at Maximum Compression

• Axial Comp. and Moment at Zero Strain

• Axial Comp. and Moment at 50% Strain

• Axial Comp. and Moment at Balanced Condition

• Moment at Zero Axial

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Concrete Column Interaction Diagrams

Design concrete columns never been simpler. Click here for ready-to-use column strength interaction diagrams

Preliminary Size of Footing Subjected to vertical Load and Moment

For the case of eccentric footing, and maximum length of the footing is predefined, the chart is outlining the procedure in order to define the method of analysis. Flexural equation is simply used when lower value of the bearing pressure is compression. However, soils do not take any tension, and thus if the lower value of the pressure is less than zero, static procedures (equilibrium) equations must be used in order to magnify the lager value of the pressure to offset the omission of the tension zone.