This reference page identifies the Hybox 355 square hollow section (SHS) with a 140x140x10 designation. It brings the key profile dimensions, corner geometry, sectional area, unit weight, standard reference, and CAD download together for engineers, detailers, and fabricators.
Use the values in the existing reference block as the controlling local data. For broader terminology, compare this entry with related structural steel shapes, hollow sections, and steel section properties resources on SteelSTD.
Hybox 355 SHS 140x140x10
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 : 140x140x10
Depth : 140 mm
Width : 140 mm
Thickness : 10 mm
Outer Corner Radius : 25 mm
Inner Corner Radius : 15 mm
Sectional Area : 48.6 cm2
Unit Weight : 38.2 kg/m
How to read this SHS reference
SHS means square hollow section: a closed, welded steel profile with equal nominal outside dimensions in the two principal directions. In this entry, the designation communicates the section size and wall thickness, while the separate dimension fields identify the depth, width, and thickness used in the local reference data.
Corner radii and profile geometry
The outer and inner corner radii describe the rounded transitions between the flat faces of the section. These details matter when interpreting drawings, checking clearances, preparing connection details, or comparing a nominal section designation with modeled geometry. A CAD model should use the supplied profile information rather than treating the corners as sharp unless the drawing specifically requires a simplified representation.
Sectional area and unit weight
Sectional area is a geometric property used when reviewing section behavior and carrying out engineering calculations. Unit weight expresses the listed mass per unit length and is useful for estimating member mass, handling requirements, and material quantities. Neither value should be used in isolation for a final design; applicable loads, restraints, connections, fabrication requirements, and project specifications still require engineering review.
Standard and CAD reference
The source content identifies EN 10219-2:2006-04 for dimensional, tolerance, and sectional-property reference, with EN 10219-1 noted for technical delivery conditions. Keep those roles distinct when reviewing procurement or fabrication documentation. The attached DWG provides a practical starting point for drafting and coordination; verify scale, units, layer conventions, and project-specific detailing before issuing drawings.
For related research, link this page to the site’s entries for EN 10219 hollow sections, SHS and RHS profiles, steel connection detailing, and DWG steel section downloads.
Frequently asked questions
What does SHS mean?
SHS means square hollow section. It describes a closed profile with square outside geometry and a hollow interior, subject to the corner geometry listed in the reference data.
What does 140x140x10 identify?
The designation identifies the section’s nominal outside dimensions and wall thickness. Consult the separate dimension fields in the source block when preparing calculations or drawings.
Why are both outer and inner corner radii listed?
The two radii describe the outside and inside transitions at the corners. They help distinguish the actual rounded profile from a simplified sharp-corner sketch or CAD representation.
What is the purpose of the DWG file?
The DWG is a drafting reference for the listed section. Review its units, scale, geometry, and project conventions before incorporating it into issued documentation.
Can the listed sectional area and unit weight be used directly for design?
They are useful reference properties, but final design requires verification against the governing project requirements, material documentation, loading, connections, fabrication details, and applicable engineering checks.
