public double GetShearLagFactor(ShearLagCase Case, double x_bar, double b_plate, double l,
double B, double H, double A_g, double A_connected, bool IsOpenOpenTensionSection)
{
ShearLagFactorBase shearLagCase;
switch (Case)
{
case ShearLagCase.Case1:
shearLagCase = new ShearLagCase1();
break;
case ShearLagCase.Case2:
shearLagCase = new ShearLagCase2(x_bar,l);
break;
case ShearLagCase.Case3:
shearLagCase = new ShearLagCase3();
break;
case ShearLagCase.Case4:
shearLagCase = new ShearLagCase4(b_plate,l);
break;
case ShearLagCase.Case5:
shearLagCase = new ShearLagCase5(B, l);
break;
case ShearLagCase.Case6a:
shearLagCase = new ShearLagCase6(true,B,H,l);
break;
case ShearLagCase.Case6b:
shearLagCase = new ShearLagCase6(false, B, H, l);
break;
case ShearLagCase.Case7a:
shearLagCase = new ShearLagCase7(2,H,b_plate,x_bar,l);
break;
case ShearLagCase.Case7b:
shearLagCase = new ShearLagCase7(3, H, b_plate, x_bar, l);
break;
case ShearLagCase.Case7c:
shearLagCase = new ShearLagCase7(4, H, b_plate, x_bar, l);
break;
case ShearLagCase.Case8a:
shearLagCase = new ShearLagCase8(2, x_bar, l);
break;
case ShearLagCase.Case8b:
shearLagCase = new ShearLagCase8(3, x_bar, l);
break;
case ShearLagCase.Case8c:
shearLagCase = new ShearLagCase8(4, x_bar, l);
break;
default:
shearLagCase = new ShearLagCase2(x_bar, l);
break;
}
double U= shearLagCase.GetShearLagFactor();
if (IsOpenOpenTensionSection == false)
{
return U;
}
else
{
//AISC section D3
//For open cross sections such as W, M, S, C or HP shapes, WTs, STs, and single and
//double angles, the shear lag factor, U, need not be less than the ratio of the gross area
//of the connected element(s) to the member gross area. This provision does not apply
//to closed sections, such as HSS sections, nor to plates
double Umax = A_connected / A_g;
U = U < Umax ? Umax : U;
return U;
}
}
public double GetShearLagFactor(ShearLagCase Case, double x_bar, double b_plate, double l,
double B, double H, double A_g, double A_connected, bool IsOpenTensionSection)
{
ShearLagFactorBase shearLagCase;
switch (Case)
{
case ShearLagCase.Case1:
shearLagCase = new ShearLagCase1();
break;
case ShearLagCase.Case2:
shearLagCase = new ShearLagCase2(x_bar, l);
break;
case ShearLagCase.Case3:
shearLagCase = new ShearLagCase3();
break;
case ShearLagCase.Case4:
shearLagCase = new ShearLagCase4(b_plate, l);
break;
case ShearLagCase.Case5:
shearLagCase = new ShearLagCase5(B, l);
break;
case ShearLagCase.Case6a:
shearLagCase = new ShearLagCase6(true, B, H, l);
break;
case ShearLagCase.Case6b:
shearLagCase = new ShearLagCase6(false, B, H, l);
break;
case ShearLagCase.Case7a:
shearLagCase = new ShearLagCase7(2, H, b_plate, x_bar, l);
break;
case ShearLagCase.Case7b:
shearLagCase = new ShearLagCase7(3, H, b_plate, x_bar, l);
break;
case ShearLagCase.Case7c:
shearLagCase = new ShearLagCase7(4, H, b_plate, x_bar, l);
break;
case ShearLagCase.Case8a:
shearLagCase = new ShearLagCase8(2, x_bar, l);
break;
case ShearLagCase.Case8b:
shearLagCase = new ShearLagCase8(3, x_bar, l);
break;
case ShearLagCase.Case8c:
shearLagCase = new ShearLagCase8(4, x_bar, l);
break;
default:
shearLagCase = new ShearLagCase2(x_bar, l);
break;
}
double U = shearLagCase.GetShearLagFactor();
if (IsOpenTensionSection == false)
{
return(U);
}
else
{
//AISC section D3
//For open cross sections such as W, M, S, C or HP shapes, WTs, STs, and single and
//double angles, the shear lag factor, U, need not be less than the ratio of the gross area
//of the connected element(s) to the member gross area. This provision does not apply
//to closed sections, such as HSS sections, nor to plates
double Umax = A_connected / A_g;
U = U < Umax ? Umax : U;
return(U);
}
}