1.1 This part of ISO 13562 specifies additional tests to verify the stability of industrial variable-reach fork-lift trucks handling empty or laden freight containers of length 6 m and above, swap bodies or semi-trailers. 1.2 This International Standard specifies tests in addition to those specified in ISO 13562-1. It is applicable to self-propelled, seated-rider operated, counterbalanced industrial variable-reach fork-lift trucks
with non-slewing booms or a slewing movement not greater than 5° either side of the longitudinal centre plane of the truck,
fitted with fork arms or load-handling attachments,
with a rigid chassis,
that may have stabilizers or axle-locking devices, and
with two-wheel steering systems. 1.3 The stability tests contained in this part of ISO 13562 ensure that variable-reach trucks handling freight containers have satisfactory stability when reasonably and appropriately used under the following conditions. a) The truck is operating (travelling with the freight container at normal travelling height and stacking) in conditions where the wind speed is up to 12,2 m/s (Beaufort Scale Force 6). NOTE 1 When the truck is operating in higher wind speeds, alternative ratings for use should be developed by use of higher values of vw in equations (1) and (2). b) The truck is travelling forward with the freight container leading, elevated so that the base is no higher than 1 m above the point of maximum depression of the seat cushion under the operator with the boom retracted as far as possible. NOTE 2 The elevated load permits an operator in a low position on the truck to see underneath the container. The stability tests to cover the conditions stated in a) above and Note 1 are applicable to all trucks. The stability tests to cover the conditions stated in b) only are applicable to trucks with a partially elevated container. 1.4 This part of ISO 13562 is not applicable to the trucks specified in 1.2 when ISO 13562-2:2001(E) 2 © ISO 2001 – All rights reserved
they are handling suspended loads that may swing freely, or
they are handling a container with a mobile centre of gravity (see ISO 3874). 1.5 The tests take into account the normal degree of eccentric loading of containers defined in ISO 3874. When handling empty refrigerated containers, as specified in ISO 1496-2, with an integral refrigeration unit (reefers), account should be taken of the offset of the load.