Steel hollow sections have until recently been used almost exclusively for truss girders, bridge girders and in recent examples, columns, taking advantage of their inherent properties when axially loaded in tension and compression. The use of hollow sections as beams in frame structures subject to bending moment conditions is a fairly new application and their […]
HSS – Bolted Connections – Introduction Read Article »
The blind bolt hole centers are a function of the outside corner radius (r2) of the hollow section profile. To determine the bolt hole centers it’s necessary to work from the outside-in, therefore, dimension (e1) is a function of the corner radius + clearance for the blind fastener (c1) – this will vary depending on
HSS – Edge Distances for Detailing Read Article »
There are basically 3 means of connecting steel hollow sections, which include: Welding Through-Bolting, and Blind-Bolting Welding is usually restricted to workshop joints and applied mainly in the fabrication of trusses, lattice girders and sub-assemblies. For more information on this go to Welded Joints Site welding should be avoided – it’s costly, often difficult and
HSS – Fastener Options Read Article »
A moment connection is designed to resist rotation at the joint – most hollow section connections, unlike open section connections, will not allow a great deal of flexibility and will rely on the rotation capacity of the connection components of the incoming beam. These connections are defined specifically as Moment Resisting which means the load
HSS – Beam to Column / Bolted Moment Connections Read Article »
Typical Examples Beam to column connections using Fin-Plates are probably the most widely used connection due to their relative ease of fabrication and erection. The main advantage lies with the fact that they are all Through-Bolted. The following examples show typical connections graduating for the simplest and most straightforward to the more complex (and costly)
HSS – Beam to Column / Bolted Fin-Plates Read Article »
These connections are not generally regarded as Moment Resisting, but due to their configuration they will offer some resistance against rotation. The determining factor lies with the Rotation Capacity of the joint components. (For more about the rotation capacity go to Moment Connections) Typical Examples The first 4 examples show typical beam to column connections
HSS – Beam to Column / Bolted End-Plates / Cleats Read Article »
Typical Examples Bolting beam to beam using hollow sections is not widely used – it can prove to be quite costly due to the welding of the various components of the joint. Also, the joint is exposed and is not particularly aesthetically pleasing (Though there is a hidden joint option, which we’ll look at later)
HSS – Beam to Beam Bolted Fin Plates Read Article »
Typical Examples Here we’ll look at some typical examples of a hollow section beam to beam connections. The first examples illustrate a hollow section beam bolted to a hollow section supporting member – as mentioned in the Introduction, this is not a widely used configuration and are used in mainly single-storey lightweight structures. Figs. 1
HSS – Beam to Beam Bolted End-Plates / Cleats Read Article »
Square, Rectangular, and Round Hollow Structural Section (HSS) The hollow section profile possesses a greater strength-to-weight ratio than conventional open sections which allows for a greater flexibility in use due to its enhanced efficiency and inherent resistance to compression and torsion. This makes them ideal for use as structural column, shafts, trusses, composite beams and
Steel Hollow Sections Read Article »
Generally, hollow section trusses and lattice girders are welded together in the workshop and delivered to site as a unit, this allows for better quality control and more efficient site erection. The trusses usually connect at each end to a support column, but they may connect to another truss forming a space frame. Trusses may
HSS – Trusses and Lattice Girders / Welded Connections Read Article »
