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The depth of compression block
a =
The maximum depth of rectangular compression block
a max =
The maximum depth of compression zone
c max
The factor for converting compression block to rectangular
β1 =
Required reinforcement of singly reinforced section
As =
The moment resisted by compressed concrete and tension reinforcement
M uc =
The force developed in concrete
C =
The moment required to be resisted by compression reinforcement and tension reinforcement
M us =
The Stress in the compression steel
fs`=
The required compression reinforcement is
As`=
The required tension reinforcement to balance compression in concrete
A s1=
The required tension reinforcement to balance compression in steel
A s2 =
The total tension reinforcement is
As =
The maximum reinforcement ratio for "tension controlled section"
ρ max =
The balance reinforcement ratio
ρ b =
Minimum reinforcement ratio
ρ min =
R umax =
The minimum depth of a section to resist a moment considering maximum reinforcement
d =
