Thickness of Column Web given Column Web Depth Clear of Fillets Calculator

Column Web Thickness Formula:

\[ t_{wc} = \left( \frac{d_c \times P_{bf}}{4100 \times \sqrt{F_{yc}}} \right)^{1/3} \]

Column Web Thickness (t_wc):

Definition: This calculator determines the required thickness of a column web based on web depth, computed force, and column yield stress.

Purpose: It helps structural engineers ensure column webs can withstand forces from moment connections without buckling.

The calculator uses the formula:

\[ t_{wc} = \left( \frac{d_c \times P_{bf}}{4100 \times \sqrt{F_{yc}}} \right)^{1/3} \]

Where:

Explanation: The formula calculates the minimum web thickness required to prevent local buckling under the applied forces.

Details: Proper web thickness ensures structural integrity, prevents premature buckling, and maintains connection strength in steel structures.

Tips: Enter web depth in mm, computed force in kN, and column yield stress in MPa (default 50 MPa). All values must be > 0.

Q1: What is web depth clear of fillets?
A: It's the straight portion of the web between the fillets at the web-to-flange junction.

Q2: How is computed force determined?
A: It's the force delivered by the flange of a moment connection plate, adjusted for load factors.

Q3: What's a typical column yield stress?
A: Common values are 250 MPa (36 ksi) or 350 MPa (50 ksi), but check your material specifications.

Q4: Why the 4100 constant in the formula?
A: This empirical constant accounts for material properties and safety factors in the design equation.

Q5: Does this consider seismic or wind loads?
A: The computed force should already include these if they're part of your load combination.