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 6.
NOTATION.
a
-
Depth of equivalent rectangular stress block, in
A
-
Area of section, in2
Ag
-
Area of gross section, in2
An
-
Net area of section, in2
Aps -
Area of prestressed reinforcement, in2
As
-
Area of nonprestressed tension reinforcement, in2
A's -
Area of compression reinforcement, in2
A -s -
Area of rebound tension reinforcement, in2
Av
-
Area of shear reinforcement, in2
b
-
Width of beam, in
-
Unit width of wall or panel, in
B
-
Pressure intensity, psi
d
-
Distance from extreme compression fiber to centroid of
nonprestressed tension reinforcement, in
db
-
Distance between the centroids of the compression and
tension reinforcement, in
dp
-
Distance from extreme compression fiber to centroid of
prestressed reinforcement, in
DIF
-
Dynamic increase factor
DL
-
Dead load, psf
e
-
Distance from centroid of section to centroid of
prestressed reinforcement, in
E
-
Modulus of elasticity, psi
Ec
-
Modulus of elasticity of concrete, psi
Em
-
Modulus of elasticity of masonry units, psi
Es
-
Modulus of elasticity of steel, psi
f'c
-
Compressive strength of concrete, psi
f'dc
-
Dynamic compressive strength of concrete, psi
f'dy
-
Dynamic yield stress of steel, psi
2.08-266
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