ow do we determine the length of the "confinement zone" for special spacing requirements of stirrups in a beam due to seismic (earthquake) conditions?

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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 How do we determine the length of the "confinement zone" for special spacing requirements of stirrups in a beam due to seismic (earthquake) conditions?
Questions:
1. What is the formula for maximum steel ratio rho
max under the latest ACI Code being used in the
2015 NSCP? If fy = 275MPa, f'c = 21 MPa, compare
the values of rho max under 2001 NSCP and 2015
%D
NSCP. Which is higher?
2. How do we determine the length of the
"confinement zone" for special spacing requirements
of stirrups in a beam due to seismic (earthquake)
conditions?
3. Reproduce the table from NSCP 2015 showing the
values of strength reduction phi under different
conditions of strain in steel.
Transcribed Image Text:Questions: 1. What is the formula for maximum steel ratio rho max under the latest ACI Code being used in the 2015 NSCP? If fy = 275MPa, f'c = 21 MPa, compare the values of rho max under 2001 NSCP and 2015 %D NSCP. Which is higher? 2. How do we determine the length of the "confinement zone" for special spacing requirements of stirrups in a beam due to seismic (earthquake) conditions? 3. Reproduce the table from NSCP 2015 showing the values of strength reduction phi under different conditions of strain in steel.
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