300 x 90 x 41KG Parallel Flange Channels - BSEN10025-2 S275JR

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Can this 300 x 90 PFC be used in exposed environments without corrosion protection?

No, it is not recommended to leave this channel untreated in exposed or outdoor environments. S275JR is a mild steel that will begin to oxidise when exposed to air and moisture, particularly in coastal or industrial settings. For long-term durability, especially in external applications, this section should be hot-dip galvanised or painted with a high-build zinc phosphate primer followed by a protective topcoat. Surface treatment also helps maintain structural performance by preventing material loss due to rust.

What is the actual thickness of the flange and web on the 300 x 90 x 41KG PFC?

The nominal dimensions for this profile typically include a web thickness of approximately 13mm and flange thickness of around 20mm. These can vary slightly depending on the mill or manufacturer but remain within the tolerances specified by BS EN 10025-2. If you require precise dimensions for fabrication or structural calculations, please request the full section profile datasheet at the time of order.

How does this profile compare with a universal beam (UB) of similar depth?

While both the 300mm PFC and a 305UB may have comparable depths, the key differences lie in geometry and load direction. A parallel flange channel concentrates material in the web and a single-directional flange layout, making it better for applications where support is required against one surface or where fixing points are only needed on one side. In contrast, a UB distributes mass across two flanges and is more efficient for vertical bending resistance. PFCs are often used in edge details, support brackets, and secondary members, whereas UBs are common in main structural beams.

Is this PFC suitable for use in floor edge supports or slab perimeters?

Yes. Its consistent flange profile and flat outer face make it ideal for edge support in precast and in-situ concrete flooring. When used at floor perimeters, it allows for easy bolting of edge trims, grating supports, or even integration of cast-in channels. However, ensure appropriate anchoring or connection to adjacent structural members to manage torsional loads, especially if the section is cantilevered or carrying guardrails.

Can the 300 x 90 PFC be notched or modified on-site for service integration?

Yes, but any modification?such as web cut-outs, notching, or drilling?should be assessed to ensure it does not compromise structural capacity. Small service penetrations can typically be made using magnetic base drills or plasma cutting, provided sharp internal corners are avoided. For larger alterations or repetitive patterns, off-site CNC profiling is recommended for cleaner finishes and accuracy. Always follow structural engineer guidance if modifying load-bearing sections.

What are the main advantages of using parallel flange channels for balustrade fabrication?

PFCs offer flat, wide flanges that make them easier to work with when attaching base plates, uprights, or infill panels. The uniform flange width also simplifies alignment with balustrade end caps or architectural finishing elements. In staircases or raised platforms, these channels can serve as edge supports while accommodating welded or bolted uprights with minimal fabrication time. They also present a cleaner appearance in visible installations when finished correctly.

Can this channel be incorporated into temporary works such as formwork or shoring systems?

Yes. The strength and consistent shape of this section make it suitable for use in temporary works like soldier beams, formwork edge restraints, or as part of modular shoring frames. However, due to its weight (41kg/m), it must be handled with mechanical lifting when longer spans are involved. Ensure the system design accounts for bending loads, shear, and lateral restraint, especially when subjected to construction-related live loads or vibration.