Ae

The factor AE/L represents the stiffness of the member in resisting axial loads. It gives the magnitude of an axial load needed to produce a unit displacement.

Equations (3.50) to (3.51) hold for both tension and compression members. However, since compression members may buckle prematurely, these equations may apply only if the member is relatively short (Arts. 3.46 and 3.49).

FIGURE 3.19 Representation of types of ideal supports: (a) roller, (b) hinged support, (c) fixed support.

FIGURE 3.19 Representation of types of ideal supports: (a) roller, (b) hinged support, (c) fixed support.

Strut Civil

FIGURE 3.20 Stresses in axially loaded members: (a) bar in tension, (b) tensile stresses in bar, (c) strut in compression, (d) compressive stresses in strut.

FIGURE 3.20 Stresses in axially loaded members: (a) bar in tension, (b) tensile stresses in bar, (c) strut in compression, (d) compressive stresses in strut.

Renewable Energy 101

Renewable Energy 101

Renewable energy is energy that is generated from sunlight, rain, tides, geothermal heat and wind. These sources are naturally and constantly replenished, which is why they are deemed as renewable. The usage of renewable energy sources is very important when considering the sustainability of the existing energy usage of the world. While there is currently an abundance of non-renewable energy sources, such as nuclear fuels, these energy sources are depleting. In addition to being a non-renewable supply, the non-renewable energy sources release emissions into the air, which has an adverse effect on the environment.

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