A 16 × 20 in. column is made of concrete and reinforced with the same six No. 9 (in-lb) bars. The cross-section and the given material properties are shown below. (a) Draw the transformed cross-section. (b) Find the axial load that will stress the concrete to 1200 psi.
A 16 × 20 in. column is made of concrete and reinforced with the same six No. 9 (in-lb) bars. The cross-section and the given material properties are shown below. (a) Draw the transformed cross-section. (b) Find the axial load that will stress the concrete to 1200 psi.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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A 16 × 20 in. column is made of concrete and reinforced with the same six No. 9 (in-lb) bars. The cross-section and the given material properties are shown below.
(a) Draw the transformed cross-section.
(b) Find the axial load that will stress the concrete to 1200 psi.
Transcribed Image Text:A 16 × 20 in. column is made of concrete and reinforced with the same six No. 9 (in-lb) bars.
The cross-section and the given material properties are shown below.
Given Properties
4 := 6.0 in²
b:= 16 in
h:= 20 in
f:= 4000-psi
f, :=40000.psi
(a) Draw the transformed cross-section.
E
= 29000000-psi
-16"
The steel is assumed to be Elastoplastic material. The concrete modulus of elasticity can be
estimated by 5700√fé.
(b) Find the axial load that will stress the concrete to 1200 psi.
20"
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