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depth of the excavation should be the radius of the crane and should be checked by the load chart of the crane.
200 mm from above crossing equipment
One and Half times of depth,
First is determining where to safely set up the crane relative to the shoulder of the slope and second is making sure that the outrigger float loads are distributed down through the blocking or load spreaders such that they don’t exceed the allowable soil bearing pressure.
Distances based on different types of soil different distence. , the horizontal distance “D” should be greater than4 times the width of the outrigger float blocking “B”, without having to consider soil type.
Therefore “D” =4 *2.5 feet = feet
crane type , lifting load weight , soil condition and excavation deep depth must check before using the crane. then we can take the safe distance to use of crane the excavated aria.
