Parallel flange channels, a common structural steel section, are characterized by their parallel flanges and a web connecting them. Their versatility makes them suitable for a wide range of applications in construction, engineering, and manufacturing. This comprehensive guide delves into the specifics of parallel flange channels, covering their dimensions, properties, weight calculation, and availability across different regions. We will primarily refer to the European Standard EN 10365, which governs the production and properties of parallel and taper flange channels.
Understanding Parallel Flange Channels (PFCs)
Parallel flange channels, often abbreviated as PFCs, differ from taper flange channels (TFCs) in that their flanges maintain a constant width along their length. This consistent geometry simplifies design calculations and fabrication processes. They are typically hot-rolled from steel, ensuring high strength and durability. The dimensions of PFCs are standardized, allowing for easy selection and interchangeability. Key characteristics include:
* Depth (h): The overall height of the channel.
* Width (b): The width of the parallel flanges.
* Thickness (tw): The thickness of the web.
* Flange thickness (tf): The thickness of the flanges.
* Web height (hw): The height of the web.
These dimensions, along with the material properties (yield strength, tensile strength, etc.), determine the channel's overall strength and stiffness. The EN 10365 standard specifies these dimensions and tolerances for various PFC sizes.
Parallel Flange Channel Size Chart & Dimensions
The precise dimensions of parallel flange channels vary considerably depending on the manufacturer and the specific standard followed. A comprehensive parallel flange channel size chart would be extensive and best presented in tabular format (which is beyond the scope of this text-based response). However, we can illustrate the general concept. A typical chart would include columns for:
* Designation: A unique identifier for each channel size (e.g., UPE 100, UPE 120, PFC 150, etc.). Different countries might use slightly different designation systems.
* Depth (h): The overall height of the channel in millimeters (mm).
* Width (b): The width of the flanges in mm.
* Web Thickness (tw): The thickness of the web in mm.
* Flange Thickness (tf): The thickness of the flanges in mm.
* Mass per meter (kg/m): The weight of the channel per unit length. This value is crucial for structural calculations and material estimation.
* Area (cm²): The cross-sectional area of the channel.
* Moment of Inertia (Ix, Iy): These values represent the resistance to bending about the x and y axes respectively.
* Section Modulus (Wx, Wy): These values are used in bending stress calculations.
* Radius of Gyration (ix, iy): These values are important for column stability calculations.
Such charts are readily available online from steel suppliers and structural engineering resources. Searching for "parallel flange channel dimensions" or "UPE dimensions" (UPE being a common designation) will yield numerous results.
Parallel Flange Steel Channel Sizes: Regional Variations
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