Excavations

Remember the "one-to-one" rule when pumping concrete near an excavation or land that falls off steeply from the pump: For every foot of depth, position the pump at least one foot back from the edge. Pumps can be placed closer to the edge of a slope than to a vertical drop-off. For instance, on a one-to-one slope, the pump often does not require much of a setback. And can often be placed at the top of the slope.

When pumping into an excavation, take into consideration the fact that most boom pumps have a much higher upward reach than downward. A boom pump that can reach 100 feet high may have only about half that reach downward.

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