1. What is a Diameter of Tank Bottom Calculator?

Definition: This calculator determines the required diameter of a tank's bottom plate based on the nominal tank diameter, shell thickness, and extension requirements.

Purpose: It helps engineers and designers properly size tank bottom plates to ensure structural integrity and proper fit.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( D_b \) — Bottom plate diameter (mm)
• \( D \) — Nominal tank diameter (mm)
• \( t_{minimum} \) — Minimum thickness of shell (mm)
• \( x \) — Total extension (mm)

Explanation: The bottom plate diameter accounts for the tank diameter plus allowances for shell thickness and any required extensions.

3. Importance of Proper Bottom Plate Sizing

Details: Correct bottom plate diameter ensures proper load distribution, structural stability, and compatibility with the tank shell.

4. Using the Calculator

Tips: Enter the nominal tank diameter in mm, minimum shell thickness (with ±5% tolerance), and total extension (with ±5% tolerance). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why include ±5% tolerance for thickness and extension?
A: Manufacturing tolerances and material variations typically require this allowance for proper fit.

Q2: What factors affect the total extension?
A: Extensions account for welding requirements, corrosion allowance, and structural requirements.

Q3: How is nominal tank diameter determined?
A: This is typically specified by the tank designer based on capacity requirements and industry standards.

Q4: Does this calculation include corrosion allowance?
A: The minimum thickness should include any required corrosion allowance in its specification.

Q5: When would I need to adjust these calculations?
A: For non-standard designs, high-pressure applications, or special material requirements.

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