Pua Mna kips Pn 800 700 Mob 600 500 400 300 200 100 Mnb Pub elevation - exterior joint 100 200 300 400 500 Mn ft-kips Column Interaction Diagram
Pua Mna kips Pn 800 700 Mob 600 500 400 300 200 100 Mnb Pub elevation - exterior joint 100 200 300 400 500 Mn ft-kips Column Interaction Diagram
Engineering Fundamentals: An Introduction to Engineering (MindTap Course List)
5th Edition
ISBN:9781305084766
Author:Saeed Moaveni
Publisher:Saeed Moaveni
Chapter12: Electric Current And Related Variables In Engineering
Section12.2: Electrical Circuits And Components
Problem 6BYG
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Question
The rectangular reinforced concrete column shown is part of a special moment frame in a region of high seismic risk. The columns above and below the joint have the same cross section containing properly developed and confined concrete whose interaction diagram is shown below. Under factored gravity and seismic loads, the design axial compression forces on the columns are:
• Case 1: Pua = 260 kip, Pub = 320 kip
• Case 2: Pua = 55 kip, Pub = 100 kip
Find the maximum nominal moment strength of the beam permitted by ACI to alleviate plastic hinges forming first in the columns for the loading cases?
Transcribed Image Text:Pua
Mna
kips
Pn
800
700
Mob
600
500
400
300
200
100
Mnb
Pub
elevation - exterior joint
100
200
300
400 500 Mn ft-kips
Column Interaction Diagram
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