'Values for intermediate heights above 15 ft may be interpolated. Source: UBC.

'Values for intermediate heights above 15 ft may be interpolated. Source: UBC.

This procedure is for the wind design of vessels and their supports in accordance with the Uniform Building Code (UBC). This procedure to the UBC is basically the same as that outlined in the previous procedure for ASCE 7-95. There is a difference in the terminology used and the values of the tables, but the process is identical. In addition, UBC, Section 1615, states that "structures sensitive to dynamic effects, such as buildings with a height-to-width ratio greater than five,

Table 3-7

Pressure Coefficients (Cq)

Structure or Part Thereof


Cq Factor

Chimneys, tanks, and solid towers

Open-frame towers

Tower accessories (such as ladders, conduits, lights, and elevators)

Square or rectangular Hexagonal or octagonal Round or elliptical Square and rectangular Diagonal Normal Triangular

Cylindrical members 2 in. or less in diameter Over 2 in. in diameter Flat or angular members

1.4 any direction

1.1 any direction 0.8 any direction

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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