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Resistance available for blast load, psi
ru
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Ultimate unit resistance, psi
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Static test load, psi
_
ru
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Mean static test load, psi
Ru
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Total ultimate resistance, lb or lb/in
s
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Spacing between stirrups, in
tm
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Time to maximum deflection, ms
T
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Duration of blast load, ms
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Thickness of masonry wall
TN
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Natural period of vibration, ms
vc
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Concrete shear capacity, psi
vu
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Ultimate shear stress, psi
Vd
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Direct shear force, lb
Vu
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Total applied design shear at db/2 from the support lb/in
w
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Unit weight, lb/in3
Xc
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Lateral deflection to which masonry wall develops no
resistance
XDL
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Dead load deflection, in
XE
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Equivalent elastic deflection, in
XLL
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Live load deflection, in
Xm
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Maximum deflection, in
X1
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Deflection at maximum ultimate resistance of masonry wall
yt
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Distance from top of the section to centroid of section
[alpha]
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Angle between inclined stirrups and longitudinal axis of
member
[gamma]p
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Factor for type of prestressing tendon
[sigma]
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One standard deviation
[theta]max
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Maximum support rotation, degrees
[phi]
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Strength reduction factor
[mu]max
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Maximum ductility ratio
[nu]
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Poisson's ratio
2.08-268
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