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The Locomotive - Lighthouse Survival Blog

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114 THE LOCOMOTIVE. [August,<br />

to which they are secured above. <strong>The</strong> sectional area of these guys should be suffi-<br />

cient to withstand the action of the strongest winds that are experienced in the neighbor-<br />

FiG. 2. — Sectional View of the Base Plate of Fig. 1.<br />

Fig. 3. —Plan of the Base Plate of the Stack shown in Fig. 1.<br />

liood of the stack. This should be determined for each locality separately ; but engineers<br />

often use the following "rule of thumb," which is found by experience to give satisfac-<br />

tory results in most cases : ISIultiply the height of the stack, in feet, by its diameter in<br />

inches, and take the square root of the product. Divide this square root by 100, and<br />

the quotient is the least allowable diameter of the guy in inches.

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