AS 22915.12:2018 pdf download.Industrial trucks—Verification of stability Part 12: Industrial variable-reach trucks handling freight containers of 6 m (20 ft) length and longer (ISO 22915- 12:2015, MOD).
4 Operating conditions
4.1 General
In addition to Iso 22915-1, the following conditions apply: — operating the truck (travelling with the freight container at normal travelling height and stacking) in conditions where the wind rated speed is up to 12,2 rn/s.
4.2 Partially elevated container
The container is elevated for travel so that the bottom of the container is no higher than 900 mm above the seat index point (SIP) as defined in ISO 5353 and with the boom fully retracted. NOTE The elevated container permits an operator in a low position on the truck to see underneath the container.
5 Test conditions
5.1 General
See ISO 22915-1.
The tests shall take into account the normal degree of eccentric loading of containers defined in 150 3874. When handling empty containers with integral refrigeration unit (reefer), as specified in ISO 1496-2, the offset loading needs to be taken into account, according to ISO 22915-20.
5.2 Prevailing wind
The tests shall not be carried out in a prevailing wind that would significantly affect the test results. For trucks intended for use in a higher wind speed than the rated wind speed of 12,2 m/s, Vw shall be changed to the actual wind speed. NOTE Reference sources, e.g. crane and building standards, confirm that a value of 0,8 for Cf2 is appropriate for wind acting normal to the longitudinal axis of freight containers.
5.4 Position of the truck on the tilt table
The truck shall be positioned on the tilt table according to Table 1. The indication of load and steer axle is the centreline of the load and steer axle. The allocation of the indication is defined in Figure 2.For tests 1 and 2 (see Table 1), the truck shall be positioned on the tilt table so that the load axle C-C is parallel to the tilt axis X-Y of the tilt table. For tests 3, 4, 5, and 6 (see Table 1), the truck shall be positioned on the tilt table in a turning position with line M-N parallel to the tilt axis X-Y of the tilt table. For trucks with articulating steer axle, the wheel on the steer axle nearest to the tilt axis of the tilt table shall be parallel to the tilt axis. In case of trucks with selectable stabilizers and/or axle locking, tests 1 and 3 of Table 1 shall be conducted with stabilizers/axle locking engaged and disengaged. Point M is defined as follows: a) for trucks with articulating steer axle: the projection onto the tilt table of the intersection of the longitudinal centre plane, A-A, of the truck with the axis of the steer axle; b) for trucks with axle locking: the centre point of the area of contact between the tilt table and the rear wheel nearest the tilt table tilting axis. Point N is defined as the centre point of the area of contact between the tilt table surface and the load wheel or stabilizer pad nearest the tilting axis.
5.5 Test load
5.5.1 General
The test load shall consist of a load corresponding to the weight of the container, and a load or force simulating the effect of the wind on the container.
5.5.2 Basic load
The test load shall be equivalent to an ISO container 2,90 m (9 ft 6 in) high, with a mass equivalent to the rated load as specified by the manufacturer, acting through its centre of gravity. When using a top lift, side lift, or other load-handling means, the position of the centre of gravity shall be determined by the connection points to the test load, e.g. twist locks into the corner fittings.Where the load-handling means can be laterally adjusted to the truck longitudinal centreline, ISO 22915-10 may apply. Where the load-handling means has positional adjustment capability in the direction of the truck longitudinal centreline, other than boom reach, the tests shall be carried out at both extremes of adjustment.
5.5.3 Wind force
The effect of this force can be simulated in the tests by one of the following methods:
— applying this force normal to the tipping axis of the truck through the load centre of gravity, in the same vertical angle as specified for the tilt table in Table 1 (parallel to the tilt table surface),or — applying a vertical load, in addition to the test load, giving an equivalent moment to the wind force acting when the slope is at the required tilt angle as specified in the table of tests.
5.6 Lift height
5.6.1 Lift height for tests simulating stacking
For tests simulating stacking, the load shall be in the least stable combination of lift and reach, as determined by the manufacturer. Test 5 (see Table 1) shall be conducted at maximum and minimum boom extension at maximum boom angle.AS 22915.12 pdf download.