Advantages of Composite Truss Construction

A composite truss consists of a steel truss fabricated from rolled sections, such as HSS, angles and WT, and a concrete slab atop the steel truss. Composite action between steel and concrete is achieved through the addition of headed shear stud connectors. The shear studs are field-welded through the sheet steel deck to the steel top [...]

2017-08-01T16:21:29-04:00April 20th, 2017|Tags: , |

Members Subject to Axial Tension and Bending

Steel members subject to combined axial tension (T) and bending moment (M) can occur in steel trusses and other applications. For such cases, and for Class 3 sections in particular, Clause 13.9 provides a pair of interaction equations: where S is the elastic section modulus, and A is the cross-sectional area. Engineers are sometimes puzzled by [...]

2017-04-03T12:58:12-04:00January 16th, 2017|Tags: , |

Composite Beams in Building Structures

In consideration of ultimate limit states of composite beams in service alone, full composite design generally results in the lightest beam sections. Partial composite capacity, however, usually suffices because factors other than the ultimate limit states of the composite beam often dictate the steel beam size and the percentage of composite shear connection. These factors are: [...]

2017-08-01T16:20:56-04:00September 27th, 2016|Tags: , |


In the design of continuous beams and Gerber beams, one must not confuse the inflection points in the vertical bending moment diagram with the inflection points in the laterally buckled shape...

2017-04-03T12:24:26-04:00April 21st, 2016|Tags: , |