Engineering Information regarding cable flex and what it means to meet the 4" sphere code.
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All Ultra-tec cable railing infill should be installed to the following specifications:
Cable Spacing Center to Center = 3.125″
Maximum Unsupported Span = 48″
Cable Tension = 225 lbs

Section ATest Results for Sphere Pass-Through Resistance
Section BCalculations for various code diameters for pass-through resistance for 4″ sphere
Section C Summary of Loads by Fitting