private double CalcFaxrkUpperLimitValue(Fastener fastener)
{
string type = fastener.type;
string nailType = fastener.nailType;
if (type == "nail" && nailType == "round")
{
return(0.15);
}
else if (type == "nail" && nailType == "square")
{
return(0.25);
}
else if (type == "nail")
{
return(0.50);
}
else if (type == "screw")
{
return(1);
}
else if (type == "bolt")
{
return(0.25);
}
else if (type == "dowel")
{
return(0);
}
return(1);
}
public TimberToTimberCapacity(
Fastener Fastener,
double T1,
double Tpen,
double Alfa,
string TimberMaterial,
string ConnectorMaterial,
bool PreDrilled,
double Pk1,
double Pk2,
double T_head,
string WoodType,
double N
)
{
this.t1 = T1;
this.tpen = Tpen;
this.alfa = Alfa;
this.fastener = Fastener;
this.timberMaterial = TimberMaterial;
this.connectorMaterial = ConnectorMaterial;
this.preDrilled = PreDrilled;
this.pk1 = Pk1;
this.pk2 = Pk2;
this.woodType = WoodType;
this.t_head = T_head;
this.n = N;
this.variables = new Variables(Fastener, PreDrilled, Pk1, Pk2, Alfa, WoodType, T1, Tpen, N);
this.Faxrk_upperLimit = this.CalcFaxrkUpperLimitValue(Fastener);
}
public double GetTpen(Fastener fastener, double t1, double t2)
{
double tpoint = fastener.l - t1;
if (t2 - tpoint <= 4 * fastener.d)
{
this.error = "(t2 - tpoint) must be at least 4d";
}
else if (tpoint < 8 * fastener.d)
{
this.error = "tpoint must be at least 8d";
}
return(tpoint);
}
public Variables( //For timber to steel cases
Fastener fastener,
bool preDrilled,
double pk,
double alfa,
string woodType,
double t1,
double t_steel,
double n
)
{
this.Myrk = CalcMyrk(fastener);
this.fhk = CalcFhk(preDrilled, fastener, pk, alfa, woodType);
this.Faxrk = CalcFaxrk(pk, fastener, t1, fastener.l - t1, alfa, n);
}
public BrittleFailure(Fastener fastener, double pk, double alfa, bool preDrilled)
{
if (fastener.type == "nail" || (fastener.type == "screw" && fastener.d <= 6))
{
this.CalculateForNails(pk, fastener.d, alfa);
}
else if (fastener.type == "bolt" || (fastener.type == "screw" && fastener.d > 6))
{
this.CalculateForBolt(alfa, fastener.d);
}
else if (fastener.type == "dowel")
{
this.CalculateForDowel(alfa, fastener.d);
}
}
double CalcFaxrk(double pk, Fastener fastener, double t1, double tpen, double alfa, double n)
{
double value = 0;
if (fastener.type == "nail")
{
double fpaxk = CalcNailfaxk(tpen, fastener.d, pk, fastener.smooth);
double fhaxk = CalcNailfaxk(t1, fastener.d, pk, fastener.smooth);
double fheadk = CalcNailfheadk(pk);
value = Math.Min(fpaxk * fastener.d * tpen, fhaxk * fastener.d * t1 + fheadk * Math.Pow(fastener.dh, 2));
}
else if (fastener.type == "screw")
{
value = CalcScrewFaxrk(n, fastener.d, pk, alfa, tpen, fastener.t_thread);
}
return(value);
}
public double CalcMyrk(Fastener fastener)
{
double value = 0;
if (fastener.type == "nail" && fastener.smooth == true)
{
value = 0.3 * fastener.fu * Math.Pow(fastener.d, 2.6);
}
else if ((fastener.type == "nail" && fastener.smooth == false) || (fastener.type == "screw" && fastener.d <= 6))
{
value = 0.45 * fastener.fu * Math.Pow(fastener.d, 2.6);
}
else if (fastener.type == "bolt" || (fastener.type == "screw" && fastener.d > 6))
{
value = 0.3 * fastener.fu * Math.Pow(fastener.d, 2.6);
}
return(value);
}
public Variables( //For timber to timber cases
Fastener fastener,
bool preDrilled,
double pk1,
double pk2,
double alfa,
string woodType,
double t1,
double t2,
double n
)
{
this.Myrk = CalcMyrk(fastener);
this.fh1k = CalcFhk(preDrilled, fastener, pk1, alfa, woodType);
this.fh2k = CalcFhk(preDrilled, fastener, pk2, alfa, woodType);
this.beta = this.fh2k / this.fh1k;
this.tpen = GetTpen(fastener, t1, t2);
this.Faxrk = CalcFaxrk(pk1, fastener, t1, this.tpen, alfa, n);
}
double CalcFhk(bool preDrilled, Fastener fastener, double pk, double alfa, string woodType)
{
double fhk = 0;
if ((fastener.type == "nail" && fastener.d <= 8) || (fastener.type == "screw" && fastener.d <= 6))
{
if (preDrilled == false)
{
fhk = 0.082 * pk * Math.Pow(fastener.d, -0.3);
}
else
{
fhk = 0.082 * (1 - 0.01 * fastener.d) * pk;
}
}
if ((fastener.type == "nail" && fastener.d > 8) || (fastener.type == "bolt") || (fastener.type == "screw" && fastener.d > 6))
{
fhk = CalculateFhAlfak(fastener.d, pk, alfa, woodType);
}
return(fhk);
}
public TimberToSteelCapacity(
Fastener Fastener,
bool PreDrilled,
double Pk,
double Alfa,
string WoodType,
double T1,
double T_steel,
double N,
bool ThickPlate
)
{
this.fastener = Fastener;
this.preDrilled = PreDrilled;
this.pk = Pk;
this.alfa = Alfa;
this.woodType = WoodType;
this.t1 = T1;
this.t_steel = T_steel;
this.n = N;
this.thickPlate = ThickPlate;
this.variables = new Variables(Fastener, PreDrilled, Pk, Alfa, WoodType, T1, T_steel, N);
this.Faxrk_upperLimit = this.CalcFaxrkUpperLimitValue(Fastener);
}
