## Ota

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Eci Secant modulus of elasticity of concrete at transfer

Ecm Secant modulus of elasticity of concrete

Es Modulus of elasticity of reinforcement or prestressing steel

Fc Force due to concrete in compression at ultimate limit state

Fs Force in tension reinforcement or prestressing tendons at ultimate limit state

FSd Design value of tie force in pilecap

FSdsup Design value of support reaction

Ft Tie force in corbel or due to accidental action

Fv Vertical force applied to corbel or, for sway classification of structures, sum of all vertical loads under service conditions

Gk Characteristic value of permanent action or dead load

Gw Characteristic dead floor load

Gkr Characteristic dead roof load

H Overall depth of tank

Hc Horizontal force applied to corbel

I Second moment of area of cross-section

/j Second moment of area of uncracked concrete section

/n Second moment of area of cracked concrete section

/b Second moment of area of beam section

Ic Second moment of area of concrete section

/col Second moment of area of column section

'slab Second moment of area of slab section

/x Second moment of area of section in x direction

I Second moment of area of section in y direction

J St Venant torsional stiffness of rectangular section

Jtot St Venant torsional stiffness of total section

K Deflection-curvature factor dependent upon the shape of the bending moment diagram

K, Reduction factor for calculation of second order eccentricity

K2 Coefficient taking account of decrease in curvature due to increasing axial force

M Bending moment

Mr Moment of force, F . about tension reinforcement

Mcr Moment causing cracking

Mcx Moment of force, Nc, about x axis

Wcy Moment of force, Nc, about y axis

Mo First order moment

MR6 Design moment of resistance iWRdc Moment of force, /VRdc, about mid-depth of section

WRdc Moment of force, A/'Rdc, about mid-depth of section

MRd s Moment of force, /VRds, about mid-depth of section

MSd Design value of applied moment

MSdx Design moment in x direction

MSdy Design moment in y direction iWSd1 First order moment at end 1

MSd2 First order moment at end 2

MSdcs Design moment in column strip

MSdms Design moment in middle strip

M Moment in span span ~

Msup Moment at support

M, Maximum moment transfer value t.max

Mx Moment about x axis Moment about y axis

N Axial force

Nc Axial force due to concrete in compression

A/Rd Design resistance to axial force

A/ndc Design resistance to axial force due to concrete

A/'Rdc Design resistance to axial force due to concrete of hypothetical section of depth x > h

WRd, |
Design resistance to axial force due to reinforcement |

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