icture is made from concrete containing Type I The average ambient relative humidity is 70 percent. The concrete was red for 7 days. f = 4000 psi. Compute the unrestrained shrinkage strain of a rectangular beam with cross-sectional dimensions 8 in. x 20 in. at 2 years after the concrete was placed. - Compute the axial shortening of a 20 in. x 20 in. x 12 ft plain concrete column at age 3 years. A compression load of 400 kips was applied to the column at age 30 days.
icture is made from concrete containing Type I The average ambient relative humidity is 70 percent. The concrete was red for 7 days. f = 4000 psi. Compute the unrestrained shrinkage strain of a rectangular beam with cross-sectional dimensions 8 in. x 20 in. at 2 years after the concrete was placed. - Compute the axial shortening of a 20 in. x 20 in. x 12 ft plain concrete column at age 3 years. A compression load of 400 kips was applied to the column at age 30 days.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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
Transcribed Image Text:3-8 A structure is made from concrete containing Type I
cement. The average ambient relative humidity is 70 percent. The concrete was
moist-cured for 7 days. f = 4000 psi.
a. Compute the unrestrained shrinkage strain of a rectangular beam with
cross-sectional dimensions 8 in. x 20 in. at 2 years after the concrete was
placed.
b. Compute the axial shortening of a 20 in. X 20 in. × 12 ft plain concrete
column at age 3 years. A compression load of 400 kips was applied to the
column at age 30 days.
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