18 Questions
What is the minimum percentage of longitudinal reinforcement required in a column according to the ACI Code?
1%
What is the maximum percentage of steel allowed in a column according to the ACI Code?
8%
What is the minimum number of longitudinal bars required for compression members with rectangular or circular ties?
4
What is the minimum size of ties required for longitudinal bars #10 or smaller?
#3
What is the recommended minimum diameter of a column?
8 in.
What is the consequence of having less than 1% longitudinal reinforcement in a column?
Sudden nonductile failure
What is the maximum center-to-center spacing of ties in a column?
All of the above
What is the minimum diameter of spirals in a column?
3/8 in.
What is the purpose of a complete circular tie in a column?
To hold longitudinal bars in place
Why is a slightly larger φ specified for spiral columns?
Because of their greater toughness
What is the primary reason why the failure of a column is more severe than the failure of a beam?
Because columns generally support a larger part of a structure
What is the minimum overlap required for the ends of a circular tie?
6 in.
What is the minimum size of ties required when longitudinal bars are larger than #10?
#4
What is the maximum center-to-center spacing of ties allowed?
16 times the diameter of the longitudinal bars
What is the minimum percentage of longitudinal reinforcement required in non-composite compression members?
0.01Ag
What is the minimum number of longitudinal bars required in compression members within rectangular or circular ties?
4
What is the minimum clear spacing required between parallel bars in a layer?
1 in
What is the maximum percentage of longitudinal reinforcement allowed in non-composite compression members?
0.08Ag
Learn about the minimum and maximum percentage of steel reinforcement in columns according to ACI Code, and its effects on failure, creep, shrinkage, and bending strength.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
