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number is not 3.0
please use the link below and choose open to install the latest version. Install Version 3.0
SLING ANGLES
Sling
Angle Degrees (A°)
Load
Angle Factor = L / H
90
1.000
60
1.155
50
1.305
45
1.414
30
2.000
LOAD
ON EACH LEG OF SLING =
(Load ÷ 2) x LOAD ANGLE FACTOR
ANSI B30.9 recommends against the use of a horizontal sling angle
smaller than 30º