Why do you need a Structural Engineer? What do they do?
Structural engineers are primarily concerned with the safety and stability of structures that they design. Structural analysis is the main tool that structural engineers use to ensure that a structure can withstand the various types of forces that it will encounter during its normal operation.
Civil engineers investigate three properties of forces when conducting a structural analysis:
Magnitude: The size of the force being applied to the structure.
Direction:
The direction of the force. A strong wind would be acting against the side of the building, while the weight of a heavy snowfall would act downwards, in the direction of gravity. Different systems of materials and reinforcements are required to counteract different types of forces.
Position:
The position on which the force acts. Structural engineers must assess the effects of anticipated forces on each area of the building, not just on the building as a whole.