RCC Structures Design
If the size of a column is reduced above the floor, the main bars of the columns, are

Continued up
All of the listed here
Stopped just below the floor level and separate lap bars provided
Bent inward at the floor level

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RCC Structures Design
Pick up the assumption for the design of a pre-stressed concrete member from the following:

A transverse plane section remains a plane after bending
All listed here
Variation of stress in reinforcement due to changes in external loading is negligible
During deformation limits, Hook's law is equally applicable to concrete as well as to steel

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