Page Comparison

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ICONS

A _wp = Total cross-sectional area of ​​the vertical punching rebars on the punching circumference
A _z = Punching area
b ₁ = Punching circumference length in the loading direction
b ₂ = Punching circumference length perpendicular to the loading
c _(maj) = The center of gravity of the punching area calculated in the moment direction around the strong axis
c _(min) = center of gravity calculated in the direction of the moment around the weak axis of the punching area
c ' _(maj) =The center of gravity of the punching area calculated in the opposite direction of the moment around the strong axis
c ' _(min) = The center of gravity calculated in the opposite direction of the moment around the weak axis of the punching area
d = Slab useful height
D = Strength _Excess Coefficient
f _ctd = Design tensile strength of concrete
J _(maj) = Sum of polar inertia and second moments around the strong axis of the surfaces forming the stapling area (A _z )
J _(min) = Punching area (A _z)) the sum of the polar inertia and second moments around the weak axis of the forming surfaces
M _{d (maj)} = The design moment calculated under the combined effect of vertical loads and earthquake loads on the strong axis of the column and based on the slab punching calculation
M _{d (min)} = In the weak axis of the column, vertical loads and earthquake loads and the design moment based on the slab punching calculation
u _p = Punching circumference
V _d = Punching force based on the punching calculation
τ _{pd, 1} = Design-based punching stress
τ _{pd, 2} =Punching stress based on design
γ _v = Coefficient reflecting the shear effect in the punching calculation
γ _f = Coefficient reflecting the bending effect in the punching calculation
ρ = Cross section area of ​​the punching reinforcement in the unit area

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By using punching equipment, the punching strength can be increased up to 1.5f _ctd or 1.75f _ctd as stated above .

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