Summary of Standard Structural Profiles and Their Properties

1. Overview

This document provides detailed technical data on various standard structural profiles used in construction and engineering. The profiles include square and rectangular tubes, channel sections, round tubes, I-beams, square bars, round rods, flat plates, and six-arrow rods. Each profile type is characterized by dimensions, section area, weight per meter, and moments of inertia.

2. Profile Specifications

• Dimensions (Size in mm): Provided as width, height, and thickness or other relevant measures depending on profile type.
• Section Area (mm²): Cross-sectional area important for strength and load calculations.
• Weight (Kg/m): Linear weight indicating material quantity per meter length.
• Moment of Inertia (I x 10⁴ mm⁴): Indicates resistance to bending and deflection, critical for structural design.
• Additional Parameters: Some profiles include angle measurements or other geometric properties relevant to their application.

3. Profile Types and Key Data

3.1 Square & Rectangular Tubes

Data includes sizes ranging from 25x25 mm to 350x250 mm with thicknesses from 2 mm to 10 mm. Section areas vary from around 268 mm² to over 7000 mm². Weights range from approximately 0.5 Kg/m to over 13 Kg/m. Moments of inertia span from 0.5 x10⁴ mm⁴ to over 13 x10⁴ mm⁴. Larger profiles show significantly higher inertia, indicating suitability for heavy load-bearing applications.

3.2 Channel Sections

Sizes vary from small (30x25 mm) to large (450x25 mm). Section areas range from about 176 mm² to over 2300 mm². Weights per meter range from 0.3 Kg/m to over 4 Kg/m. Moments of inertia vary widely, with some profiles exceeding 50 x10⁴ mm⁴, indicating strong resistance to bending.

3.3 Round Tubes

Diameters range from 15 mm to 76 mm with thicknesses from 2 mm to 10 mm. Section areas range from under 100 mm² to nearly 500 mm². Weights vary from 0.05 Kg/m to over 0.9 Kg/m. Moments of inertia are provided for some sizes, useful for torsional and bending calculations.

3.4 I-Beams

Sizes and thicknesses vary, with section areas from about 98 mm² to over 3884 mm². Weights range from 0.18 Kg/m to over 7 Kg/m. Moments of inertia are significant, with some profiles exceeding 2300 x10⁴ mm⁴, indicating high load capacity and stiffness.

3.5 Square Bars and Round Rods

Smaller profiles with section areas from 39 mm² to 170 mm² and weights from 0.008 Kg/m to 0.22 Kg/m. Moments of inertia are relatively low, suitable for lighter structural or mechanical applications.

3.6 Flat Plates and Six-Arrow Rods

Flat plates and specialized rods are listed with dimensions, section areas, weights, and moments of inertia. These profiles are used for specific structural or mechanical purposes requiring particular geometric properties.

4. Critical Parameters and Recommendations

• Selection Criteria: Choose profiles based on required load capacity, bending resistance (moment of inertia), and weight constraints.
• Thickness and Size: Increasing thickness and size generally increases section area, weight, and moment of inertia, enhancing strength but adding weight.
• Application Suitability: Larger square and rectangular tubes are suitable for heavy structural elements; channel sections are often used for frames and supports; round tubes and rods are common in mechanical and architectural applications.
• Standardization: The profiles conform to standard sizes and properties, facilitating design consistency and material procurement.

5. Data Presentation

The data is presented in tabular form with columns for dimensions, section area, weight, and moments of inertia. Some entries include additional geometric parameters such as angles. This structured format supports easy comparison and selection of profiles for engineering design.

6. Limitations

• Some data entries have missing values or unspecified parameters, which should be verified before use.
• Units are consistent but must be carefully checked during calculations to avoid errors.
• The document does not specify material grades or tolerances, which are critical for final design decisions.

7. Conclusion

This document serves as a comprehensive reference for standard structural profiles, providing essential geometric and mechanical properties. It supports engineers and designers in selecting appropriate profiles based on size, weight, and structural performance criteria.