1. What is the Width of Footing Calculation?

The width of footing calculation determines the appropriate dimension of a foundation footing based on soil properties and applied loads. This ensures structural stability and prevents excessive settlement.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( B \) — Width of Footing (m)
• \( q \) — Load Intensity (Pa)
• \( R_v \) — Total Downward Force in Soil (N)
• \( \gamma \) — Unit Weight of Soil (N/m³)
• \( \phi \) — Angle of Shearing Resistance (rad)

Explanation: This formula calculates the required footing width considering soil shear strength properties and applied loads to ensure foundation stability.

3. Importance of Footing Width Calculation

Details: Proper footing width calculation is essential for structural safety, preventing excessive settlement, and ensuring the foundation can safely transfer loads to the underlying soil.

4. Using the Calculator

Tips: Enter load intensity in Pascals, total downward force in Newtons, unit weight of soil in N/m³, and angle of shearing resistance in radians. All values must be positive.

5. Frequently Asked Questions (FAQ)

Q1: What is load intensity in footing design?
A: Load intensity refers to the pressure applied per unit area on the footing by the structure above.

Q2: Why is angle of shearing resistance important?
A: The angle of shearing resistance represents the soil's internal friction and is a key parameter in determining soil shear strength.

Q3: What is unit weight of soil?
A: Unit weight of soil is the weight per unit volume of soil, including both solid particles and void spaces.

Q4: When should this calculation be used?
A: This calculation is used in the design of shallow foundations for buildings and other structures to determine appropriate footing dimensions.

Q5: Are there limitations to this formula?
A: This formula assumes homogeneous soil conditions and may need modification for layered soils or special loading conditions.