Length Rectangular Base for Projection of Base Plate beyond Flange and Parallel to Web Calculator

Formula Used:

\[ N = m^2 \times \left( \frac{2 \times Pu}{0.9 \times Fy \times B \times t^2} \right) \]

Projection of Base Plate Beyond Flange:

Factored Load:

Yield Load:

Width:

Thickness:

Length (mm):

1. What is Length Rectangular Base Calculator?

Definition: This calculator determines the required length of a rectangular base plate based on the projection beyond the flange and other structural parameters.

Purpose: It helps structural engineers and construction professionals design appropriate base plates for wide-flange columns.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ N = m^2 \times \left( \frac{2 \times Pu}{0.9 \times Fy \times B \times t^2} \right) \]

Where:

\( N \) — Length of rectangular base plate (mm)
\( m \) — Projection of base plate beyond flange (mm)
\( Pu \) — Factored load (kN)
\( Fy \) — Yield load (kN)
\( B \) — Width parallel to flanges (mm)
\( t \) — Thickness of base plate (mm)

Explanation: The formula calculates the required length based on the projection squared multiplied by a factor considering load, yield strength, width, and thickness.

3. Importance of Base Plate Calculation

Details: Proper base plate design ensures structural stability, proper load distribution, and safety of the column connection to the foundation.

4. Using the Calculator

Tips: Enter all required parameters. Default values are provided for yield load (350 kN), width (40 mm), and thickness (33 mm). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What does the ±5% indicate?
A: It represents the acceptable tolerance range for the input values in practical applications.

Q2: How is the projection (m) determined?
A: It's typically based on the column dimensions and required edge distance for bolt placement.

Q3: What's a typical yield load value?
A: 350 kN is common for structural steel, but always verify with material specifications.

Q4: How does thickness affect the result?
A: Thicker plates reduce the required length as they can distribute loads more effectively.

Q5: Should safety factors be applied to the result?
A: The formula already includes a 0.9 factor, but additional safety factors may be required by local codes.