Understanding how helical, curved beams operate — how their spiral cuts accommodate angular and parallel misalignment, axial motion, and system vibrations — is the key to knowing how they will perform ...
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 ...
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 ...
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