This reference provides the published identification and key section data for Hybox 355 SHS 70x70x3.5. Use it when checking a square hollow section designation, reviewing drafting information, or comparing section properties with a project schedule.
The page brings together the section dimensions, corner-radius information, sectional area, unit weight, applicable standard reference, and a downloadable DWG resource. For design work, confirm that the selected material, connection details, loading assumptions, and fabrication requirements are appropriate for the specific application.
Hybox 355 SHS 70x70x3.5
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 : 70x70x3.5
Depth : 70 mm
Width : 70 mm
Thickness : 3.5 mm
Outer Corner Radius : 7 mm
Inner Corner Radius : 3.5 mm
Sectional Area : 8.99 cm2
Unit Weight : 7.1 kg/m
How to read the SHS designation
SHS means square hollow section. The 70x70x3.5 designation identifies the section’s listed outside depth, outside width, and wall thickness. The corner radii are reported separately because the corners are curved rather than sharp; this affects how the profile is represented in drawings and how section data is interpreted.
Understanding the listed section data
The dimensional entries describe the overall profile geometry, while the sectional area and unit weight provide reference information for quantity checks, material schedules, and preliminary comparisons. These values should be read together with the dimensional and material requirements for the project rather than treated as a substitute for a complete structural verification.
- Depth and width: identify the overall square profile dimensions.
- Thickness: identifies the listed wall thickness.
- Outer and inner corner radii: describe the curved transition at the section corners.
- Sectional area: represents the listed cross-sectional area.
- Unit weight: supports mass and estimating checks for the section length used.
Standard and drafting context
The source identifies EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties of cold-formed welded structural hollow sections. It also distinguishes this dimensional and sectional-property reference from EN 10219-1, which addresses technical delivery conditions.
For drafting workflows, the supplied DWG can help with layout and detailing. Check the drawing against the authoritative values on this page and confirm the required units, layer conventions, corner representation, and fabrication tolerances before issuing design or manufacturing documentation. Related references on this site may include square hollow section dimensions, structural steel section properties, steel connection detailing, and CAD/DWG resources.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow structural profile with a square outside form and curved corners.
How should 70x70x3.5 be interpreted?
In this reference, the designation identifies a listed depth of 70 mm, width of 70 mm, and thickness of 3.5 mm. The corner radii are provided separately.
What standard is referenced for this section?
The source references EN 10219-2:2006-04 for dimensions, tolerances, and sectional properties. It also notes EN 10219-1 for technical delivery conditions.
What is the listed sectional area?
The listed sectional area is 8.99 cm2. Use the source value for reference checks and confirm any project-specific design basis separately.
What is the listed unit weight?
The listed unit weight is 7.1 kg/m. This value can support material takeoffs and schedule reviews, subject to confirmation of the project’s applicable material and fabrication requirements.
What is the DWG download used for?
The supplied DWG is a drafting reference for the Hybox 355 SHS 70x70x3.5 profile. Review its geometry and units against the published section data before using it in issued drawings or fabrication documents.
