Custom welded beams are widely used in single level industrial and warehousing-type structures. The members are generally subjected to lightweight loadings and have generous plenum depth requirements.
This enables an optimised design approach to produce an efficient, custom-tapered welded member with 30-40% weight savings when compared to hot rolled beams.
The expression “custom-tapered welded members” indicates that they have been designed for a specific application, as opposed to an “off-the-shelf” item. Members under this classification may also be parallel (in other words, non-tapered), such as the columns in a fixed base portal frame. There may also be other reasons for the shape of the members not replicating the bending moment diagram directly.
A wide range of plate thicknesses is available, allowing the designer to select almost any thickness and depth combination to create a virtually infinite variety of structural members.
Our standard approach is to provide single-sided fillet welds on most members. Double-sided welding is available as an optional extra on all member types.
When you need a small number of beams as an efficient alternative to hot rolled sections, we can offer an easy-to-use range of standard dimension parallel members with equal flanges. Typically, these provide 15% weight savings over the equivalent hot rolled beams. The section properties of standard welded members are defined and listed in the publication, “Design Capacity Table for Welded Sections”. To download our Design Capacity Tables, click here.
We have developed High Capacity welded sections specifically for columns and beams in high-rise construction up to 40 and 50mm. We can now offer these in G300 and G350 grades, as well as G300L15 and G350L15 to meet the new seismic requirements of NZS3404. We supply these in Column, Beam and Col-Beam section types, with weights up to 700kgs per metre.