Why may dense transverse CFRP hoops not equal two widely spaced CFRP belts for axial ductility?
Choices
- (A) Proximity of wraps can overcrowd fibres reducing effective hoop strain penetration
- (B) CFRP hoops never interfere with confined core dilation
- (C) Spacing clauses are cosmetic for retrofit wraps
- (D) Column cores ignore confinement stiffness once jacketed
Correct answer: (A)
Proximity of wraps can overcrowd fibres reducing effective hoop strain penetration
Explanation
Hoops must leave room for fibres to mobilise hoop tension evenly.