Homework Answers
Porosity, n = Area of void / Total Area
Total Area = 4 x 4.2 = 16.8
Total Area of A = NA x AA = 6 x (
/4)
x 1.52 = 10.602
Total Area of B = NB x AB = 7 x (/4)
x 0.72 = 2.693
Area of voids = 16.8 - 10.602 - 2.693 = 3.505
n = 3.505 / 16.8 = 0.20
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of the beam shown in the figure are a = 4.2 in., b = 4.7 in., d =
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