Dimensional Table Overview

This document provides detailed dimensional and mechanical properties for structural elements characterized by size (b) and wall thickness (W.T., s) in millimeters. The data is organized in tabular form, listing key parameters relevant for engineering and design calculations.

Key Parameters Explained

• Size (b): Width dimension in millimeters.
• Wall Thickness (s): Thickness of the element's wall in millimeters.
• Linear Mass: Mass per meter length, expressed in kilograms per meter (Kg/m).
• Cross-sectional Area (A): Area of the cross-section in square centimeters (cm²).
• Second Moment of Area (I): Moment of inertia about the neutral axis, in cm⁴, indicating resistance to bending.
• Radius of Gyration (i): Radius of gyration in centimeters (cm), related to buckling resistance.
• Elastic Section Modulus (W): Section modulus in cm³, used to calculate bending stresses.
• Torsional Inertia Constant (J): Torsional constant in cm⁴, representing resistance to twisting.
• Torsional Modulus Constant (C): Torsional modulus in cm³, related to torsional stiffness.

Data Structure and Ranges

The table is segmented by size categories (e.g., 18, 40, 50, 60, 70, 80, 90, 100, 110 mm), each with multiple wall thicknesses ranging approximately from 1.3 mm to 14.2 mm. For each combination, the corresponding mechanical properties are listed.

Critical Observations and Usage

• Increasing wall thickness generally leads to higher linear mass, cross-sectional area, and mechanical resistance parameters (I, W, J, C).
• The radius of gyration decreases slightly with increasing thickness, reflecting geometric changes.
• These parameters are essential for structural design, enabling calculation of load capacity, bending moments, torsional resistance, and stability.
• The data supports selection of appropriate sizes and thicknesses for engineering applications requiring specific mechanical performance.

Recommendations and Best Practices

• Use the table values directly for preliminary design and verification of structural elements.
• Cross-check torsional and bending parameters with design codes to ensure compliance.
• Consider the trade-off between increased mass and mechanical performance when selecting sizes.
• Apply radius of gyration values for buckling analysis in compression members.

This dimensional table is a fundamental reference for engineers and designers working with structural profiles, providing comprehensive mechanical and geometric data to inform safe and efficient design decisions.