The values of T1, T2, T3 and T4 are to be verified against the safe working load of 'A frame' and Fly. The maximum expected load on all four points on 'A frame' and fly jib are also available in Figure 6. This represents an increase of 68 tonnes from the calculated module weight, approximately 7% of the calculated module weight. Addition for the dynamic factor and the weight of rigging wires and shackles increases the hook load to 1026 tonnes. For the arrangement shown in the figure 6, the weighted or calculated weight for the module is 958 tonnes. Figure 6 shows a typical rigging arrangement with all necessary rigging details. Empirical formulas and numeric values of factors like SKF, DAF and consequence factor are stated in. Operational considerations are not considered here. The flow chart can be used to determine to acceptability of the lifting arrangement. A standard flowchart for lifting factors and load is shown in, compiled for inshore and static condition. Pre installation planning can help project manager and lift engineer to predict the interconnectivity among different lifting parameters and take lifting decision. Another way to look at it is as the energy of movement. One of the ways force can be explained is as a formula: Mass x Acceleration. like selection of heavy lift crane, location of installation, calculating lift hook load, selection of rigging arrangement, selection of shackle and wire are very much interconnected to each other. But when we are talking about arborist rigging, we have to look at where force comes from and how the forces are being applied in our rigging.
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