A concrete masonry (α = 0.000 006 in/in-°F) wall is 256 ft long. It will be designed to endure a 90°F temperature change. Pliable expansion joints are placed vertically in the masonry wall to limit damage from thermal expansion and contraction. A i-in vertical expansion joint allows a maximum 0.25 in change in dimension.
(a) Determine the maximum change in length of the masonry wall with this temperature change.
(b) Determine the minimum number of vertical expansion joints required in the wall to limit damage from thermal expansion and contraction.
(c) Determine the maximum spacing of evenly spaced vertical expansion joints required to limit damage from thermal expansion and contraction.
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