Soil Testing Calculator:Engineering & Science Calculators: Free Online Tools.

Definition: A soil sample calculator is a tool used to determine various properties of soil based on the weight and volume of a soil sample. Here's how you can define it using the variables weight of soil sample (𝑊) and volume of soil sample (V):

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Soil Testing Calculator

Weight of Soil Sample (in grams):

Volume of Soil Sample (in cubic centimeters):

Soil Bearing Capacity: kN/m²

Soil Testing Calculator

Weight of Soil Sample (in grams):

Volume of Soil Sample (in cubic centimeters):

Soil Bearing Capacity: kN/m²

Safe Bearing Capacity Calculator:Engineering & Science Calculators: Free Online Tools

Definition: Soil bearing capacity refers to the maximum vertical load (pressure) that soil can support without failure. It's a crucial property considered during foundation design to ensure the structure's stability. There are two key types of bearing capacity:

Ultimate Bearing Capacity (Qult): This is the theoretical maximum pressure a soil can withstand before shear failure occurs. It's not used directly in design as it doesn't account for settlement.

Allowable Bearing Capacity (Qall): This is the safe working load a soil can support, considering both shear failure and tolerable settlement. It's calculated by dividing the ultimate bearing capacity by a factor of safety (FS).

Soil Bearing Capacity Calculator

Width of Foundation (in meters):

Length of Foundation (in meters):

Soil Bearing Capacity (in kN/m²):

Safe Bearing Capacity: kN/m²

Continue Definition:

Soil Bearing Capacity

Soil bearing capacity refers to the maximum vertical load (pressure) that soil can support without failure. It's a crucial property considered during foundation design to ensure the structure's stability. There are two key types of bearing capacity:

Ultimate Bearing Capacity (Qult): This is the theoretical maximum pressure a soil can withstand before shear failure occurs. It's not used directly in design as it doesn't account for settlement.

Allowable Bearing Capacity (Qall): This is the safe working load a soil can support, considering both shear failure and tolerable settlement. It's calculated by dividing the ultimate bearing capacity by a factor of safety (FS).

Supporting Equations:

There are various methods to calculate the ultimate bearing capacity, depending on factors like soil type, depth, and geometry of the foundation.

Here's a common approach using Terzaghi's equation for shallow foundations on a cohesive soil:

Qult = cNc * sNγ + γD

Where:

c = Cohesion (shear strength) of soil (kPa)

Nc = Bearing capacity factor depending on depth and failure mechanism (dimensionless)

s = Depth factor (dimensionless)

Nγ = Unit weight factor (dimensionless)

γ = Unit weight of soil (kN/m³)

D = Depth of foundation (m)

The allowable bearing capacity is then determined by:

Qall = Qult / FS

Safe Bearing Capacity Example:

Let's say a site investigation reveals the following:

Cohesive soil with a cohesion value (c) of 100 kPa

Unit weight of soil (γ) is 18 kN/m³

Foundation depth (D) is 2 meters

We'll use a typical factor of safety (FS) of 3 for this example.

Finding Ultimate Bearing Capacity (Consult a geotechnical professional for actual calculations):

Assuming a certain value for Nc (e.g., Nc = 5.14) and s (e.g., s = 1.0), we can calculate Qult using the equation above.

Finding Allowable Bearing Capacity:

Qall = (Calculated Qult) / 3 (chosen FS)

This will give you the safe load the soil can support for your specific foundation design.

Earthwork Volume Calculator :Calculators for Students, Engineers & Researchers:free Online Tool:

Earthwork Volume Calculator

Length (ft): Width (ft): Depth (ft):