Hybox 355 SHS 90x90x3.5 is a square hollow section reference for structural steel detailing and preliminary section review. This page brings together the listed dimensions, corner radii, sectional area, unit weight, applicable standard reference, and a downloadable DWG file.
Use the data below alongside the project specification and the engineer’s design checks. For broader terminology, see the reference pages for structural steel shapes, square hollow sections, and steel section properties.
Hybox 355 SHS 90x90x3.5
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 : 90x90x3.5
Depth : 90 mm
Width : 90 mm
Thickness : 3.5 mm
Outer Corner Radius : 7 mm
Inner Corner Radius : 3.5 mm
Sectional Area : 11.8 cm2
Unit Weight : 9.3 kg/m
Hybox 355 SHS reference data
The designation identifies a square hollow section with equal outside depth and width and a specified wall thickness. The listed corner radii describe the transition between the flat faces, while the sectional area and unit weight support material takeoff and section-reference work.
| Item | Listed value |
|---|---|
| Section | Hybox 355 SHS 90x90x3.5 |
| Depth | 90 mm |
| Width | 90 mm |
| Thickness | 3.5 mm |
| Outer corner radius | 7 mm |
| Inner corner radius | 3.5 mm |
| Sectional area | 11.8 cm2 |
| Unit weight | 9.3 kg/m |
How to use this SHS listing
For drafting, the nominal outside dimensions help identify the section in plans, elevations, and connection details. The corner-radius information is relevant when modeling the profile or checking clearances around the section. The sectional area and unit weight are reference properties; they should not be treated as a substitute for project-specific resistance, stability, connection, or fire-design verification.
The page refers to EN 10219-2:2006-04 for tolerances, dimensions, and sectional properties of cold-formed welded structural hollow sections. The source also notes that EN 10219-1 covers technical delivery conditions. Consult the project documentation and applicable standard requirements when specifying material, fabrication, tolerances, or inspection.
DWG download and drafting workflow
The downloadable DWG provides a starting point for CAD work involving this section. Before issuing a drawing, confirm the drawing units, layer conventions, section orientation, material designation, and connection details against the project’s CAD standards. For related guidance, see the site resources on steel connections, structural steel detailing, and DWG and CAD resources.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a hollow structural profile with square outside dimensions.
What are the dimensions of this Hybox 355 SHS?
The listed depth is 90 mm, width is 90 mm, and thickness is 3.5 mm. The designation is shown as 90x90x3.5.
What are the corner radii?
The listed outer corner radius is 7 mm and the listed inner corner radius is 3.5 mm.
What is the sectional area?
The source lists a sectional area of 11.8 cm2.
What is the unit weight?
The listed unit weight is 9.3 kg/m.
Which standard is referenced?
The listing refers to EN 10219-2:2006-04 for tolerances, dimensions, and sectional properties. It also identifies EN 10219-1 as covering technical delivery conditions.
Is a DWG file available?
Yes. The page includes a downloadable DWG associated with the Hybox 355 SHS 90x90x3.5 listing. Check units and project drafting requirements before using it in issued documentation.
