> OTOH, the shock that is transmitted though the structure by the > pounding from above would significantly overpressure the shear > strength of the bolts that tied the horizontal structure to the > vertical structure. > Does anyone know if there was welding performed in addition to > bolting? Or would that inhibit the neccessary flexing required of such > a tall structure?
Let me ask a counter-question on this. Take a cross-beam welded and bolted to a vertical beam. How far could the cross beam move straight down, at the point of attachment, before it shears apart from the vertical beam? My guess is that the 1 foot I referred to vastly overestimates the distance that the vertical beam would be offset at the point of attachment before breaking. Wouldn't a 1" movement at the point of attachment be enough to break the weld and shear the bolt? Dan M. _______________________________________________ http://www.mccmedia.com/mailman/listinfo/brin-l
