This page provides a focused reference for the Hybox 355 square hollow section identified as 250x250x10. Use the source data below to confirm the section dimensions, corner radii, sectional area, and unit weight before using the profile in design or drafting work.
The listing also identifies the EN 10219-2 context and includes a DWG resource for CAD workflows. For related learning, compare this profile with other square hollow sections (SHS), review guidance on sectional properties, and consult connection and detailing references before finalizing a model.
Hybox 355 SHS 250x250x10
Hybox 355 Square Hollow Sections
refer to : EN 10219-2:2006-04
the European standard that specifies tolerances, dimensions, and sectional properties for cold-formed welded structural hollow sections made of non-alloy and fine grain steels. It complements EN 10219-1, which covers technical delivery conditions.
Dimension : 250x250x10
Depth : 250 mm
Width : 250 mm
Thickness : 10 mm
Outer Corner Radius : 25 mm
Inner Corner Radius : 15 mm
Sectional Area : 92.6 cm2
Unit Weight : 72.7 kg/m
How to read this SHS reference
The designation 250x250x10 describes a square hollow section with equal outside depth and width and a stated wall thickness. The profile is not defined only by its nominal size: the outer and inner corner radii also affect the actual cross-sectional geometry and should be retained when creating accurate drawings or analytical models.
Dimensions and corner radii
The listed depth, width, and thickness provide the primary envelope dimensions for layout and coordination. The outer and inner corner radius entries describe the curved transitions at the corners rather than sharp theoretical corners. These details matter when checking clear flat faces, preparing connection details, or comparing a simplified model with the supplied CAD geometry.
Sectional area and unit weight
The sectional area is a cross-section property used with other engineering properties when evaluating member resistance, stiffness, and design actions. The listed unit weight expresses the mass assigned per unit length for estimating member mass and material quantities. Neither value should be used in isolation: project design also requires the applicable material, loading, restraint, connection, fabrication, and verification requirements.
Using the DWG file
The linked DWG can support drafting and coordination, but imported geometry should be checked against the source dimensions before issue. Confirm units, layer behavior, insertion scale, and corner representation in the receiving CAD system. A CAD file is a geometric reference and does not replace engineering checks or project-specific detailing.
Reference and design context
The source identifies EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties of cold-formed welded structural hollow sections, with EN 10219-1 identified for technical delivery conditions. Treat the standard reference as part of the product context and verify the applicable project requirements, material documentation, and current design basis before specifying the section.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow structural profile with a square outside form and a wall thickness around the enclosed void.
Why are the corner radii important?
Corner radii define the transition between the flat faces of the section. They influence accurate geometric modeling, clear face dimensions, connection detailing, and comparisons between nominal dimensions and manufactured geometry.
What is the difference between sectional area and unit weight?
Sectional area describes the material area visible in a cut cross-section. Unit weight in this reference expresses the section’s mass per unit length. They are related properties, but they serve different purposes in calculations and quantity estimates.
Can the DWG be used directly for structural design?
The DWG is useful for drafting and coordination, but it should be checked against the listed source data and project requirements. It does not replace design verification, connection checks, material documentation, or review by the responsible engineer.
Which standard is referenced for this profile?
The source references EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties, and identifies EN 10219-1 as covering technical delivery conditions. Confirm the applicable requirements for the project before procurement or design use.
