Product manual

N. Before lifting, make certain that the sling, attachments, or load shall not snag.
Personnel shall be continuously alert to avoid snagging or bumping.
O. In a basket hitch, proper slings must be selected to balance the load and
restrict slippage in order to prevent the load from falling out of the sling.
P. In a choker hitch, slings shall be long enough so that the choker tting
chokes onto the sling eye or body and never onto any ttings.
Q. Slings should be stored in an area where they will not be subject to
mechanical damage, moisture, extreme heat or ultraviolet light.
R. Do not expose slings to chemicals that are not
compatible with all of the sling materials.
S. Polyester slings shall not be used in temperatures in excess of 200° F.
T. Exposure to sunlight or ultraviolet light will degrade the strength of synthetic web.
U. Slings should not be used at angles of less than 30 degrees from horizontal.
V. Slings should not be dragged on the oor or over an abrasive surface.
W. When lifting points are below the center of gravity, loads tend to be unstable.
Proper rigging must restrict load rotation to avoid tipping and loss of load control.
X. For lifts of nonsymmetrical loads using multiple sling legs, an analysis should
be performed by a qualied person to prevent the overloading of any leg.
EFFECT OF ANGLE
When slings are used at an angle (i.e., two slings, or one sling in a basket hitch,
attached to only one crane hook), sling capacity is reduced. How much it is
reduced depends on the degree of the angle. You can determine whether
a sling will be rated high enough if you know the angle between the sling leg
and the horizontal. Once you know this angle, multiply the sling’s rating by the
appropriate factor in the table. This will give you the sling’s reduced rating.
ANGLE
DEGREES
FACTOR
90 1.00
85 .996
80 .986
75 .966
70 .940
65 .906
ANGLE
DEGREES
FACTOR
60 .866
55 .819
50 .766
45 .707
40 .643
35 .574
ANGLE
DEGREES
FACTOR
30 .500
Capacity decreases
rapidly under 30°.
DO NOT USE UNDER 30°.
SLING CAPACITY DECREASES AS THE ANGLE DECREASES
1,000 lb.
90°
866 lb.
60°
707 lb.
45°
500 lb.
30°
A sling capable of lifting 1,000 lb. in a 90° vertical basket hitch
can only lift 866 lb. at a 60° angle, 707 lb. at a 45° angle, and 500 lb. at a 30° angle.
Refer to other regulations, codes and standards for additional information
and safe operating practices. See OSHA CFR 1910.184 Regulations, ANSI/
ASME 830.9, and the Web Sling and Tie Down Association Standards.
Revised 11g