IS 15515 : 2004 Industrial Variable-Reach Trucks - Additional Stability Tests for Trucks Handling Freight Containers of Length 6 m and Above

1 Scope

1.1 This standard specifies additional tests to verify thestability of industrial variable-reach fork-lift trucks handlingempty or laden freight containers of length 6 m and above, swapbodies or semi-trailers.

1.2 It specifies tests in addition to those specified in IS15516.

1.3 It applies to self-propelled, seated-rider operated,counterbalanced industrial variable-reach fork-lift trucks:

a) With non-slewing booms or a slewing movement not greater than5� either side of the longitudinal centre plane ofthe truck;

b) Fitted with fork arms or load-handling attachments;

c) With a rigid chassis;

d) That may have stabilizers or axle-locking devices; and

e) With two-wheel steering systems.

1.4 The stability tests ensure that variable-reach truckshandling freight containers have satisfactory stability whenreasonably and appropriately used under the following conditions:

a) The truck is operating (traveling with the freight containerat normal traveling height and stacking) in conditions where thewind speed is up to 12.2 m/s; and

Note 1 - When the truck is operating in higher wind speeds,alternative ratings for use should be developed by use of highervalues of V_w in equations (1) and (2).

b) The truck is traveling forward with the freight containerleading, elevated so that the base is no higher than 1 m above thepoint of maximum depression of the seat cushion under the operatorwith the boom retracted as far as possible.

Note 2 - The elevated load permits an operator in a low positionon the truck to see underneath the container.

Note 3 - The stability tests to cover the conditions stated in(a) above and Note 1 are applicable to all trucks.

Note 4 - The stability tests to cover the conditions stated in(b) only are applicable to trucks with a partially elevatedcontainer.

1.5 This part of standard is not applicable to the trucksspecified in 1.3 when:

a) they are handling suspended loads that may swing freely; or

b) they are handling a container with a mobile centre ofgravity.

1.6 The tests take into account the normal degree of eccentricloading of containers.

2 References

IS 4660 : 1993 Powered industrial truck - Terminology

IS 11113 : 2004 Industrial trucks operating in special conditions of stacking with load laterally displaced by powered devices - Additional stability test

IS 15516 : 2004 Industrial variable-reach trucks - Stability test