The walls of the residence shown in Figure 16.18 are plastered with a 1/4 inch of plaster over metal lath. The exterior walls get plaster only on the inside, and the inside walls get plaster on both sides. The walls are 8 feet high. Determine the number of cubic feet of plaster needed for the walls. From Problem 16, the length of the exterior walls is 124? and the length of the interior walls is 100?6?
What will be an ideal response?
Area of walls = (124? + 2 sides × 100?6?) × 8? = 2,600 sf / 9 sf per sy = 289 sy
From Table 16-7, 5.2 cf of plaster is needed per 1/16? thickness plus 8.0 cf for the metal lath.
Plaster per hundred sy = 5.2 cf per 1/16? × 4 + 8.0 = 28.8 cf per hundred sy
Plaster = 2.89 hundred sy × 28.8 cf per hundred sy = 83.2 cf
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