This chart also shows how the manufacturer separates the different working areas of the crane. The work area diagram (chart) identifies operational quadrants and must clearly indicate the areas where no load is to be handled. Item Required by ANSI B30.5-1.1.3 Load Rating Chart and OSHA 1926.1433.
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The actual load the crane can lift is referred to as the "Net Capacity". The values given in the charts are "Gross Capacities" or "Rated Capacities". The capacities listed in a cranes load chart are not the actual loads that can be lifted on the hook.
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The "Stowed jib deductions" row is what you would deduct if the jib was stowed on the base of the boom for the particular boom length.
The gross capacity of this crane can be determined by either following the radius column and interesting boom length, or following the boom angle column and intersecting the radius or boom length column. Loaded boom angle (means the boom's angle and radius is being measured with the boom loaded with the weight indicated in the chart) The numbers in the left column represent operating radius The numbers on top row represent boom lengths of the crane This chart illustrates the gross or rated capacities of a crane. Ignoring these differences may lead to the overturning or structural failure of the crane. Whether you are operating a boom truck such as a Terex, National, Manitex, Pioneer, or Altec, a rough terrain crane such as a Grove, Link-Belt, Manitowoc, Kato, or Tadano, it is important to keep in mind that though many cranes have similarities in their load charts, they also have many differences. With all of the different crane manufacturers out there, it is imperative that the crane's load chart be well understood. A crane's load chart is the most important resource a crane operator should know for ensuring crane safety, and for determining what a particular crane is capable of lifting.