Consider the column section below. It has eight #9 bars. The material properties are as follows: f=4,000 psi, f, = 60 ksi, and E. = 29,000 ksi . The cross-sectional area of a #9 bar is 1.0 in.².2.5"8 - #9Axis ofbending20"20"15" 2.5"PMConsider the following hollow column section. It has the same material properties as thecolumn section above. If the tensile strain in the reinforcing bars cannot be lower than 0.0015when its nominal moment capacity is reached, using the principles of mechanics to determinethe maximum axial load P that can be carried by the column. (Ans: 574 kips)

When the column is loaded to its maximum capacity, sometimes called the critical load, it's in an…

Consider the column section below. It has eight #9 bars. The material properties are as follows: f =4,000 psi, f, = 60 ksi, and E. = 29,000 ksi. The cross-sectional area of a #9 bar is 1.0 in.². 8- #9 O O O O 15" Axis of bending 0 00 0 20" P M

Consider the column section below. It has eight #9 bars. The material properties are as follows: f =4,000 psi, f, = 60 ksi, and E. = 29,000 ksi. The cross-sectional area of a #9 bar is 1.0 in.². 8- #9 O O O O 15" Axis of bending 0 00 0 20" P M

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Concept explainers

Bars

In civil engineering, bars refer to steel reinforcement bars or rebars. These are structural members primarily used for reinforcement purposes in masonry works. A bar is characterized by its cross-sectional area, which is negligible compared to its length. Bars are usually manufactured by steel which is uniform throughout the length, or by meshing multiple steel wires. Other materials of the bar include carbon steel, glass fiber, carbon fiber, and basalt fiber. The reinforcing bars are coated with epoxy resins and other materials to enhance some of their properties including corrosion resistance.

Question

Consider the column section below. It has eight #9 bars. The material properties are as follows: f
=4,000 psi, f, = 60 ksi, and E. = 29,000 ksi . The cross-sectional area of a #9 bar is 1.0 in.².
2.5"
8 - #9
Axis of
bending
20"
20"
15" 2.5"
P
M
Consider the following hollow column section. It has the same material properties as the
column section above. If the tensile strain in the reinforcing bars cannot be lower than 0.0015
when its nominal moment capacity is reached, using the principles of mechanics to determine
the maximum axial load P that can be carried by the column. (Ans: 574 kips)

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