Section Modulus Formula:
Definition: Section modulus is a geometric property for a given cross-section used in the design of beams or flexural members like wind girders.
Purpose: It helps engineers determine the structural capacity of wind girders used in tank construction to resist wind loads.
The calculator uses the formula:
Where:
Explanation: The formula calculates the required section modulus based on tank dimensions to ensure structural stability against wind forces.
Details: Proper calculation ensures the wind girder can withstand wind loads without excessive deflection or failure, maintaining tank integrity.
Tips: Enter the tank diameter and height in meters. The ±5% indicates typical tolerance in measurements. All values must be > 0.
Q1: Why is section modulus important for wind girders?
A: It determines the girder's ability to resist bending moments caused by wind pressure on the tank.
Q2: What factors affect the section modulus requirement?
A: Wind speed, tank diameter, height, location, and design codes all influence the required section modulus.
Q3: How does tank diameter affect the section modulus?
A: Since diameter is squared in the formula, larger tanks require significantly stronger girders.
Q4: Is this calculation applicable to all tank types?
A: Primarily for cylindrical storage tanks; other shapes may require different calculations.
Q5: Should I add a safety factor to the result?
A: The formula typically includes basic safety factors, but consult engineering standards for specific applications.