Percentages for beams and columns

Strength of reinforcement fy

self-explanatory

The following tables define minimum and maximum percentages of reinforcement for different types of reinforcement steel and different shapes of cross-section.

Min. compression reinforcement

General rule

self-explanatory

Simplified rules for particular cases

Rectangular column

self-explanatory

Flanged beam:

flange in compression

self-explanatory

Flanged beam:

web in compression

self-explanatory

Rectangular beam

self-explanatory

Min. tensile reinforcement

Section subjected to pure tension

self-explanatory

Section subjected to flexure

Flanged beam, web in tension:

bw/b < 0.4

self-explanatory

Flanged beam, web in tension:

bw/b >= 0.4

self-explanatory

Flanged beam, flange in tension over continuous support:

T-beam

self-explanatory

Flanged beam, flange in tension over continuous support:

L-beam

self-explanatory

rectangular section

self-explanatory

Maximum areas of reinforcement

Beams

self-explanatory

Columns

self-explanatory

 

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