Answered: A tied column 300 x 350 mm as shown in…

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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Question

A tied column 300 x 350 mm as shown in the figure is reinforced with 6 pieces steel bars
having fy = 414 MPa and fc’ = 21 MPa as shown in the figure. The column is to resist a factored
load of 1200 kN and factored moment of 280 kNm. Using the interaction
diagram, determine the following:
a. eccentricity, e
b. steel ratio
c. diameter of the steel bars

Ag
K
ksi
7.0
6.0
5.0
4.0
3.0
2.0
1.0
= 0.
06
05-
0.04
0.037
02
08
INTERACTION DIAGRAM E4-60.60|
|f=4 ksi
f, -60 ksi
7 -0.60
PB 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08
h/h 1.00 1.00 1.07 1.17 1.26 1.34 1.42 1.50
@
0.30
0.20 0.40
3/h 0.10^
0.60
0.80
Pn
Ag
0.20
1.00
e_ØM
hA₂h
X =
·
1.20
ksi
0,40
1.40
0.50
Le/h=1.00-
1.60
1.80
2.00

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