Siding A Circular Tower. In siding a circular tower with beveled siding, it will be found necessary to cut the lower edge of each piece to such a form that when it is in place it will be parallel with the line of the water table.

Let abc (Fig. 115) represent the section of a piece of siding. Place it with its back at the angle it will assume when in position upon the house. The distance be equals one half of the width of the tower, or the radius of its plan, indicated by the arc bg. Erect a perpendicular of indefinite length from e, and continue the line ac, or the face of the siding, until it intersects the perpendicular from e at d. With d as the center, and db as the radius, describe the arc ef. If the bottom edge of each piece of the siding is cut to this arc, there will be no trouble in fitting it around the tower, unless the circle is so small that the material will not bend.

Fig. 115. - Siding a Circular Tower.

Clapboards should be bent dry, if possible; if they are soaked in hot water, they will bend more easily. Cold water is generally used, as hot water is not always available.