AS ISO 8813:2021 pdf free.Earth-moving machinery- Lift capacity of pipelayers and wheeled tractors or loaders equipped with side boom.
4.3.2 Wheeled machines
Preliminary calculations shall be made using load overhang lines defined in 3.5 with the machine steered straight ahead, steered fully left, and steered fully right. These preliminary calculations shall be used to select the steering position that results in minimum tipping load. The steering position that results in minimum tipping load for both oscillating axle and non-oscillating axle configurations shall be used to develop the lift capacity chart.
4.3.3 Machines with outriggers
Tipping load calculations for machines equipped with outriggers shall be made to develop lift capacity charts both with and without outriggers being used, in accordance with 4.3.3.1 and 4.3.3.2.
4.3.3.1 When making calculations for machines not using outriggers, the requirements of 4.3.2 apply.
4.3.3.2 When making calculations for machines using outriggers, the steering position that results in minimum tipping load shall be used to develop the lift capacity chart.
4.4 Lift mechanism lift capacity calculations
This calculation is made at a load overhang to determine the load that can be lifted at the load hook when the load from the lift mechanism (defined in 3.14) is less than the tipping load. Sufficient load overhang dimensions shall be used to develop the lift capacity chart. See figure 9.
5 Verification testing, test results and validation of calculations
5.1 Test site
The test site shall consist of a firm and level horizontal concrete, steel or equally firm surface and shall be level within 1 %.
5.1.1 Dead weight test site
The load shall be applied by lifting on a fixed anchor (the “dead weight”) and adjusting the lifting force to achieve the balance point.
5.1.2 Live weight test site
The load shall be applied by a weight of known mass (the “live weight”) with the load overhang adjusted to achieve the balance point.
5.2 Test equipment
5.2.1 Force transducer of sufficient capacity or weights of known mass.
5.2.2 Means to measure the load overhang distance.
5.2.3 Means to determine that the lift point line is perpendicular to the ground reference plane.
5.2.4 Means to monitor pressure in all hydraulic circuits that will be under pressure during the lift capacity tests.AS ISO 8813 pdf download.