Figure 8.32 k. Framing plan. Column C1, designed for gravity loads only, shortens more than C2, designed for both gravity and lateral loads. Compensating for relative elevation difference between these two categories of columns is of imortance in tall buidings.
Figure 8.32l. Physical interpretation of column overlength: (1) column shortening due to loads at all floors; (2) column shortening due to loads below the nth level; (3) column residual overlength

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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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