Welcome to All Sensors “Put the Pressure on Us” blog. This blog brings out pressure sensor aspects in a variety of applications inspired by headlines, consumer and industry requirements, market research, government activities, and you.
Pressure – Can You Dig It?
You certainly can dig a trench with pressure. Even a rather small pedestrian (walk behind) trencher with a 48” or smaller boom uses 2,900 psi of hydraulic pressure. With a 48” boom, a compact trencher has track ground pressure of around 4.6 psi. While the high pressure is developed in a hydraulic drive using a pump and motor to transmit power, the much smaller ground pressure indicates how well the weight of the machine is distributed.
Ground pressure is very important in areas that require a light footprint from equipment, such as public parks, ball fields, cemeteries, public beaches and, in fact, any finished landscape. The choice of tires or a track system makes significant difference in ground pressure. A track model can exert from 2 to 4 psi of ground pressure and a model with tires will exert about 7 to 12 psi of ground pressure. While the tires value may seem like it is way too high, for comparison, an adult standing on the lawn would exert about 6 to 8 psi of ground pressure. So, in most instances, a person digging the trench by hand actually generates more ground pressure. This is just another example of how knowing the actual pressure value is important to make the right decision.
A heavy-duty construction rubber track crawler carrier has a lower ground pressure than the average human being. Source: Teremac News, 12/6/2013.
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