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Hi to all,

I'm wondering how T7 take into account Multipliers? If I input 0.5 for inplane stiffness T7 will:

A) Multiply cross section property A1, I2 with factor 0.5?
B) Multiply E with factor 0.5 (and consequently G in isotropic material)?

My particular concern is about shear reduction. How to apply it correctly according to EC8?

Thank you in advance

Each finite element with which the surface girder (slab or wall) is modeled in the Tower program is a composition of two overlapping independent finite elements - a shell (for bending perpendicular to the plane) and a membrane (for in-plane stress).

Each of them has its own characteristics and properties.
The in-plane stress strength multiplier ("Multiplier for in plane stiffness") affects the modulus of elasticity of the membrane finite element (Em).

But, I'm still confused regarding reduction of G modulus.
If we apply multiplier for in plane stiffness, does reduction of Em modulus also mean that we reduce in plane G modulus via G=E/(1+mi)? Or G modulus remain unreduced?

Thank you b.milan for your effort.