AS ISO 8813:2021 pdf download – 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.
5.3  Test equipment accuracy Accuracy of the instrumentation for the relevant parameters measured, as listed in 5.2, shall be as specified in ISO 9248. 5.4  Test conditions 5.4.1 Lift capacity shall be determined under static conditions. 5.4.2 The machine used for the tests shall conform in all significant aspects with the machine specifications used for calculation. 5.4.2.1 Wheeled machines shall be tested at the steering position that resulted in the minimum tipping load as established in 4.3.2. 5.4.2.2 Machines with outriggers shall be tested with and without the outriggers being used, and in the configurations established in 4.3.3. 5.4.3 Tyres on wheeled machines shall be inflated and ballasted in accordance with the manufacturer’s recommendations. 5.4.4 Track tension on crawler machines shall be adjusted to the manufacturer’s recommendation. 5.4.5 Prior to test, the machine shall be cleaned, in operating condition, and operated until the engine and lifting component fluids are at normal operating temperatures. 5.4.6 All lifting systems, rope and reeving shall be in accordance with the machine manufacturer’s specifications. If hydraulic lift mechanisms are used, the working and the holding circuit pressure(s) shall be checked for compliance with the manufacturer’s recommendations. 5.4.7 Safety precautions shall be observed while conducting the tests.