Singing rock SIR Manual Del Usuario página 4

ANSI/ ASSE Z359.4-2013
Single-person use: (130 lb to 310 lb, 59 kg to 141 kg);
Maximum descent distance: 620 ft = 190 m;
Maximum descent rate: 6.6 ft/s ≈ 2 m/s;
Maximum number of descents: 28;
Rope: low-stretch, ∅ = 11 mm.
Tested and approved for multiple descents with a released energy of
5 500 000 foot-pounds. The descent energy rating is determined by:
E = W × H × N W: test weight [lb]
H: descent height [ft]
N: number of descents