READY RECKONER CONVERSION TOOL
READY RECKONER CONVERSION TOOL US
The IPAF “Spread the load Ready Reckoner” is a simple interactive tool designed to offer guidance to operators and those involved in determining the size of spreader plates to be used when setting up a boom-type MEWP where the weight will be fully supported on the outriggers, also known as jacklegs. After the gross vehicle weight of the MEWP has been entered, the ready reckoner will display the minimum area of the spreader plate and identify minimum sizes of spreader plates required for differing ground types and strengths. Before using the device, an assessment of the ground strength should be conducted.
The correct assessment of ground strength can vary from a visual inspection of the ground surface to a full geotechnical survey. In the case of MEWPs, a visual inspection is often adequate, as outrigger loads are relatively low compared with machines such as mobile cranes. However, it is essential that the assessment is made by persons with adequate knowledge and experience to know when further expert advice and assessment is required.