Concrete will yield (crack and fail) at pressures around 70 Mega Pascals. That’s 70 million Pascals. A 100 tonne load is to be driven over a concrete bridge. Each tyre on the truck has a contact area of around 0.00025 m2 with the bridge surface and transmits the weight force of the load through this contact. What is the minimum number of tyres needed to ensure that the concrete does not fail?
Fluid Pressure
The term fluid pressure is coined as, the measurement of the force per unit area of a given surface of a closed container. It is a branch of physics that helps to study the properties of fluid under various conditions of force.
Gauge Pressure
Pressure is the physical force acting per unit area on a body; the applied force is perpendicular to the surface of the object per unit area. The air around us at sea level exerts a pressure (atmospheric pressure) of about 14.7 psi but this doesn’t seem to bother anyone as the bodily fluids are constantly pushing outwards with the same force but if one swims down into the ocean a few feet below the surface one can notice the difference, there is increased pressure on the eardrum, this is due to an increase in hydrostatic pressure.
Concrete will yield (crack and fail) at pressures around 70 Mega Pascals. That’s 70 million Pascals.
A 100 tonne load is to be driven over a concrete bridge. Each tyre on the truck has a contact area of around 0.00025 m2 with the bridge surface and transmits the weight force of the load through this contact.
What is the minimum number of tyres needed to ensure that the concrete does not fail?
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