RHS 160x80x8 is a cold-formed welded rectangular steel tube identified by its overall depth, width, and wall thickness. The reference data below provides the principal dimensions, corner radii, sectional area, unit weight, and the associated EN 10219-2 context.
This page is intended as a practical lookup for drafting, section identification, preliminary material takeoffs, and CAD coordination. The listed geometry and mass data should be distinguished from structural capacity, which also depends on material grade, member length, restraint, loading, connection behavior, and the applicable design requirements.
RHS 160x80x8
Cold Formed Welded Rectangular Steel Tubes
refer to : EN 10219-2
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 : 160x80x8
Depth : 160 mm
Width : 80 mm
Thickness : 8 mm
Outer Corner Radius : 20 mm
Inner Corner Radius : 12 mm
Sectional Area : 33.64 cm2
Unit Weight : 26.4 kg/m
How to read the RHS designation
In this designation, the listed depth is 160 mm, the width is 80 mm, and the wall thickness is 8 mm. Keeping the depth and width orientation clear is important when placing the section in drawings because rotating a rectangular hollow section changes which principal direction is aligned with the applied loading.
Corner radii and CAD geometry
An RHS is not represented accurately as a sharp-cornered rectangle with a rectangular void. This section has a listed outer corner radius of 20 mm and inner corner radius of 12 mm. Those curved regions affect the section outline, sectional area, and the way adjoining plates or components fit near the corners.
When using the DWG resource, compare the overall dimensions, wall thickness, and corner geometry with the published values on this page. Also confirm drawing units, insertion scale, layer organization, and section orientation before incorporating the geometry into another CAD file.
Understanding sectional area and unit weight
The sectional area of 33.64 cm² represents the steel area in the cross-section rather than the full area enclosed by the outside profile. It is a geometric property used in several engineering and quantity calculations, but it does not by itself state the capacity of the member.
The unit weight of 26.4 kg/m expresses mass per unit length. It can support material takeoffs by applying the listed unit weight to the required member length and quantity. Allowances for connections, plates, weld metal, coatings, fabrication, and procurement should be handled separately where relevant.
EN 10219-2 reference context
The source identifies this section with EN 10219-2, which addresses tolerances, dimensions, and sectional properties for cold-formed welded structural hollow sections. It is used alongside the related technical delivery requirements referenced in the source content. Users should confirm that the project specification, product documentation, and required standard context agree before relying on the section for design or procurement.
Related reference topics
Useful companion topics include rectangular hollow section dimensions, HSS terminology, section-property concepts, unit-weight calculations, hollow-section connections, welded details, and CAD drafting practices. Comparing these topics helps separate geometric identification from material specification, connection design, and structural verification.
Frequently asked questions
What does RHS 160x80x8 mean?
The designation corresponds to a rectangular hollow section with a listed depth of 160 mm, width of 80 mm, and thickness of 8 mm.
What are the corner radii for this section?
The source data lists an outer corner radius of 20 mm and an inner corner radius of 12 mm. These radii should be retained when accurate section geometry is required.
Is the sectional area the same as the enclosed rectangular area?
No. The listed sectional area of 33.64 cm² is the area occupied by steel in the cross-section. It is not the full area inside the outside dimensions and does not represent the hollow interior.
How is the unit weight used?
The listed unit weight of 26.4 kg/m is mass per unit length. It can be applied to member lengths and quantities for a basic material estimate, while connection components and other additions are considered separately.
Does this page provide the structural capacity of the RHS?
No. Dimensions, sectional area, and unit weight are reference properties, not a complete capacity assessment. Structural verification requires the applicable material properties, loading, member length, restraint conditions, connection details, and design rules.
What should be checked after downloading the DWG?
Confirm the CAD units, scale, overall dimensions, wall thickness, corner radii, orientation, and layers. The drawing should also be coordinated with the project specification and independently reviewed before fabrication or construction use.
