The midspan cable and horizontal support forces with uniformly distributed load can be calculated as. R 1x = R 2x = R x = q L 2 / (8 h) (1) where . R 1x = R 2x = R x = midspan cable or horizontal support forces (lb, N) q = unit load on the cable (lb/ft, N/m) L = cable span (ft, m) h .
