The ACI Foundation is pleased to announce the completion of a new research product: Evaluation of Seismic Behavior of Coupling Beams with Various Types of Steel Fiber Reinforced Concrete. Gustavo J.

Zero-backlash beam couplings have high torsional stiffness and accommodate misalignment. The couplings use two sets of overlapping spiral cuts Beam Couplings (Courtesy of Ruland). Zero-backlash beam ...

A recent series of dynamic tests demonstrates that there are several types and doses of steel-fiber reinforcement that can be used in performance-based seismic design of coupling beams—headers that ...

Gustavo J. Parra-Montesinos is coming to the rescue of concrete-frame designers and contractors in earthquake country, long bedeviled by rebar-congested coupling beams that span openings in seismic ...

SAE International Journal of Materials and Manufacturing, Vol. 1, No. 1 (2009), pp. 849-858 (10 pages) ABSTRACT The research described examines the relationship between damage/repair scenarios and the ...

Beam couplings come as standard parts in 20 body sizes with outside diameters as small as 3/8 in. (9 mm) and bores as small as 3/32 in. (3 mm). They feature multiple spiral cuts to accommodate angular ...

Researchers have simulated an off-the-charts earthquake in a laboratory to test their new technique for bracing high-rise concrete buildings. Their technique passed the test, withstanding more ...