1. What is Outrigger Ground Bearing Pressure?

Outrigger Ground Bearing Pressure (GBP) is the pressure exerted by outrigger pads on the ground surface. It's a critical calculation in crane operations and construction to ensure ground stability and prevent equipment sinking or tipping.

2. How Does the Calculator Work?

The calculator uses the simple pressure formula:

Where:

• \( total\_weight \) — Total weight being supported (kg)
• \( contact\_area \) — Contact area of outrigger pads (m²)

Explanation: The formula calculates the pressure distribution by dividing the total weight by the contact area of the outrigger pads.

3. Importance of GBP Calculation

Details: Accurate GBP calculation is essential for ensuring ground stability, preventing equipment accidents, and complying with safety regulations in construction and heavy lifting operations.

4. Using the Calculator

Tips: Enter total weight in kilograms and contact area in square meters. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is a safe GBP value?
A: Safe GBP values depend on soil conditions. Typically, values below 50-100 kPa are considered safe for most soil types, but always consult soil bearing capacity reports.

Q2: How do I measure contact area?
A: Contact area is calculated by multiplying the length and width of each outrigger pad and summing the areas of all pads in contact with the ground.

Q3: Should I include the crane's weight?
A: Yes, total weight should include the crane's weight plus any lifted load and additional equipment weight.

Q4: What if outriggers have different pad sizes?
A: Calculate the total contact area by summing the area of all individual outrigger pads that are in contact with the ground.

Q5: When should GBP be recalculated?
A: GBP should be recalculated whenever the load changes significantly or when operating on different ground surfaces.