Hybox 355 SHS 80x80x5 is a square hollow structural section with equal outside depth and width. This page provides the published dimensional and sectional reference data, explains the terminology used for the profile, and links the section to its applicable European standard.
Use the source values below when checking drawings, preparing quantity information, or comparing this section with other square hollow sections. For structural design, confirm the governing material specification, connection details, load effects, and applicable design requirements with a qualified engineer.
Hybox 355 SHS 80x80x5
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 : 80x80x5
Depth : 80 mm
Width : 80 mm
Thickness : 5 mm
Outer Corner Radius : 10 mm
Inner Corner Radius : 5 mm
Sectional Area : 14.4 cm2
Unit Weight : 11.3 kg/m
How to read the SHS reference
SHS means square hollow section. The designation 80x80x5 identifies the nominal outside depth, nominal outside width, and wall thickness in the order shown. Because the first two dimensions are equal, the profile has a square outside form.
The listed outer and inner corner radii describe the curved transitions between the flat faces of the tube. These radii are important when coordinating fabrication details, clearances, section-property calculations, and connections. They should not be treated as sharp-corner geometry.
Section area and unit weight
The sectional area is a geometric property used in calculations such as material quantity checks and axial-force assessments. The unit weight expresses the mass per unit length and is useful for estimating member self-weight, handling requirements, and takeoff quantities. These values should be used together with the applicable material and design checks rather than as a substitute for a complete member assessment.
Applicable standard context
The reference identifies EN 10219-2 for tolerances, dimensions, and sectional properties of cold-formed welded structural hollow sections. It also notes the relationship with EN 10219-1, which addresses technical delivery conditions. When specifying or reviewing the section, check that the required product documentation and project specification align with the relevant standard requirements.
CAD and drafting resource
The downloadable DWG file can support preliminary drafting and layout work. Review the drawing units, layer conventions, insertion point, and project drafting standards before incorporating it into a production drawing. The CAD file should be checked against the authoritative dimensions on this page before fabrication or construction use.
Frequently asked questions
What does SHS mean?
SHS means square hollow section, a hollow structural profile with nominally equal outside depth and width.
What does 80x80x5 identify?
The designation identifies the nominal outside depth, nominal outside width, and wall thickness in the order shown on this page.
Which standard is referenced for this section?
The source identifies EN 10219-2 for tolerances, dimensions, and sectional properties, and notes that EN 10219-1 covers technical delivery conditions.
What are the corner radii used for?
Corner radii describe the curved transitions between the flat faces of the hollow section. They help users coordinate geometry, detailing, clearances, and section-property information.
Can the DWG file be used directly for fabrication?
The DWG is a drafting reference. Check its units and geometry against the published section data and project requirements before using it for fabrication or issued construction documentation.
