/// <summary>
/// When dimension lumber is used where moisture content will exceed 19% for an extended time period,
/// design values shall be multiplied by the appropriate wet service factors
/// </summary>
/// <param name="ValueType"> Distiguishes between bending, shear, tension compression reference values</param>
/// <param name="F">Reference design value for bending or compression</param>
/// <param name="C_F">Size factor</param>
/// <param name="SawnLumberType">Defines the type of lumber</param>
/// <returns></returns>
public double GetWetServiceFactor(ReferenceDesignValueType ValueType, double F,
double C_F, SawnLumberType SawnLumberType)
{
double Cm = 1.0;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
return(GetDimensionalLumberC_M(ValueType, F, C_F)); //4A
case SawnLumberType.SouthernPineDimensionLumber:
return(GetDimensionalLumberC_M(ValueType, F, C_F)); //4B
case SawnLumberType.MechanicallyGradedDimensionLumber: //4C
return(GetDimensionalLumberC_M(ValueType, F, C_F));
case SawnLumberType.VisuallyGradedTimbers: //4D
return(GetTimberC_M(ValueType, F, C_F));
case SawnLumberType.VisuallyGradedDecking: //4E
return(GetDeckingC_M(ValueType, F, C_F));
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber: //4F
return(GetNonNorthAmericanLumberC_M(ValueType, F, C_F));
default:
return(GetDimensionalLumberC_M(ValueType, F, C_F)); //4A
}
}
private double GetFlatUseCoefficientFromReferenceTable(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType
)
{
double b = Depth;
double t = Thickness;
double C_fu = 1.0;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
C_fu = GetDimensionalLumberC_fu(b, t); break;//4A
case SawnLumberType.SouthernPineDimensionLumber://4B
C_fu = GetSPDimensionalLumberC_fu(b, t); break;
case SawnLumberType.MechanicallyGradedDimensionLumber: //4C
C_fu = GetMechanicallyGradedLumberC_fu(b, t); break;
case SawnLumberType.VisuallyGradedTimbers: //4D
C_fu = GetTimberC_fu(b, t, CommercialGrade, ReferenceDesignValueType); break;
case SawnLumberType.VisuallyGradedDecking: //4E
C_fu = GetDeckingC_fu(); break;
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber: //4F
C_fu = GetNonNorthAmericanLumberC_fu(b, t); break;
default://4A
C_fu = GetDimensionalLumberC_fu(b, t); break;
}
return C_fu;
}
private double GetSizeCoefficientFromReferenceTable(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType,
bool LoadAppliedToNarrowFace
)
{
double b = Depth;
double t = Thickness;
double C_F = 1.0;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
C_F = GetDimensionalLumberC_F(b, t, CommercialGrade,ReferenceDesignValueType); break;//4A
case SawnLumberType.SouthernPineDimensionLumber://4B
C_F = GetSPDimensionalLumberC_F(b, t,CommercialGrade); break;
case SawnLumberType.MechanicallyGradedDimensionLumber: //4C
C_F = 1.0; break;
case SawnLumberType.VisuallyGradedTimbers: //4D
C_F = GetTimberC_F(b, ReferenceDesignValueType, LoadAppliedToNarrowFace); break;
case SawnLumberType.VisuallyGradedDecking: //4E
C_F = GetDeckingC_F(t); break;
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber: //4F
//Adjustment factors for table 4F are the same as those for 4A
C_F = GetDimensionalLumberC_F(b, t, CommercialGrade, ReferenceDesignValueType); break;
default://4A
C_F = GetDimensionalLumberC_F(b, t, CommercialGrade,ReferenceDesignValueType); break;
}
return C_F;
}
public double GetRepetitiveCoefficientFromReferenceTable(double Thickness,
SawnLumberType SawnLumberType)
{
double C_r;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4A
break;
case SawnLumberType.SouthernPineDimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4B
break;
case SawnLumberType.MechanicallyGradedDimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4C
break;
case SawnLumberType.VisuallyGradedTimbers:
C_r = 1.0;//4D
break;
case SawnLumberType.VisuallyGradedDecking:
C_r = 1.0;//4E
break;
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4F
break;
default:
C_r = GetDimensionalLumberC_r(Thickness); //4A
break;
}
return C_r;
}
public double GetFlatUseFactor(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType
)
{
double b = Depth;
double C_fu = 1.0;
if (b >= 2 || b <= 4)
{
C_fu = GetFlatUseCoefficientFromReferenceTable(
Depth, Thickness,
SawnLumberType, CommercialGrade,
ReferenceDesignValueType);
}
return C_fu;
}
public double GetFlatUseFactor(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType
)
{
double b = Depth;
double C_fu = 1.0;
if (b >= 2 || b <= 4)
{
C_fu = GetFlatUseCoefficientFromReferenceTable(
Depth, Thickness,
SawnLumberType, CommercialGrade,
ReferenceDesignValueType);
}
return(C_fu);
}
private double GetSizeCoefficientFromReferenceTable(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType,
bool LoadAppliedToNarrowFace
)
{
double b = Depth;
double t = Thickness;
double C_F = 1.0;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
C_F = GetDimensionalLumberC_F(b, t, CommercialGrade, ReferenceDesignValueType); break; //4A
case SawnLumberType.SouthernPineDimensionLumber: //4B
C_F = GetSPDimensionalLumberC_F(b, t, CommercialGrade); break;
case SawnLumberType.MechanicallyGradedDimensionLumber: //4C
C_F = 1.0; break;
case SawnLumberType.VisuallyGradedTimbers: //4D
C_F = GetTimberC_F(b, ReferenceDesignValueType, LoadAppliedToNarrowFace); break;
case SawnLumberType.VisuallyGradedDecking: //4E
C_F = GetDeckingC_F(t); break;
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber: //4F
//Adjustment factors for table 4F are the same as those for 4A
C_F = GetDimensionalLumberC_F(b, t, CommercialGrade, ReferenceDesignValueType); break;
default: //4A
C_F = GetDimensionalLumberC_F(b, t, CommercialGrade, ReferenceDesignValueType); break;
}
return(C_F);
}
public double GetRepetitiveCoefficientFromReferenceTable(double Thickness,
SawnLumberType SawnLumberType)
{
double C_r;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4A
break;
case SawnLumberType.SouthernPineDimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4B
break;
case SawnLumberType.MechanicallyGradedDimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4C
break;
case SawnLumberType.VisuallyGradedTimbers:
C_r = 1.0;//4D
break;
case SawnLumberType.VisuallyGradedDecking:
C_r = 1.0; //4E
break;
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber:
C_r = GetDimensionalLumberC_r(Thickness); //4F
break;
default:
C_r = GetDimensionalLumberC_r(Thickness); //4A
break;
}
return(C_r);
}
public double GetRepetitiveMemberFactor(bool IsRepetitive,
double Spacing,
double Thickness,
SawnLumberType SawnLumberType)
{
//NDS 2015 Section 4.3.9
if (IsRepetitive == true)
{
if (Spacing > 24)
{
return(1.0);
}
else
{
//return 1.15;
return(GetRepetitiveCoefficientFromReferenceTable(Thickness, SawnLumberType));
}
}
else
{
return(1.0);
}
}
/// <summary>
/// When dimension lumber is used where moisture content will exceed 19% for an extended time period,
/// design values shall be multiplied by the appropriate wet service factors
/// </summary>
/// <param name="ValueType"> Distiguishes between bending, shear, tension compression reference values</param>
/// <param name="F">Reference design value for bending or compression</param>
/// <param name="C_F">Size factor</param>
/// <param name="SawnLumberType">Defines the type of lumber</param>
/// <returns></returns>
public double GetWetServiceFactor(ReferenceDesignValueType ValueType, double F,
double C_F, SawnLumberType SawnLumberType)
{
double Cm = 1.0;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
return GetDimensionalLumberC_M(ValueType, F, C_F); //4A
case SawnLumberType.SouthernPineDimensionLumber:
return GetDimensionalLumberC_M(ValueType, F, C_F); //4B
case SawnLumberType.MechanicallyGradedDimensionLumber: //4C
return GetDimensionalLumberC_M(ValueType, F, C_F);
case SawnLumberType.VisuallyGradedTimbers: //4D
return GetTimberC_M(ValueType, F, C_F);
case SawnLumberType.VisuallyGradedDecking: //4E
return GetDeckingC_M(ValueType, F, C_F);
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber: //4F
return GetNonNorthAmericanLumberC_M(ValueType, F, C_F);
default:
return GetDimensionalLumberC_M(ValueType, F, C_F); //4A
}
}
public double GetSizeFactor(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType,
bool LoadAppliedToNarrowFace=true
)
{
double C_F;
if (Thickness >= 5 && Depth > 12.0)
{
// NDS 2015 Section 4.3.6.2
C_F = Math.Pow(12 / Depth, 1 / 9.0);
C_F = C_F > 1.0 ? 1.0 : C_F;
}
else
{
C_F = GetSizeCoefficientFromReferenceTable(Depth, Thickness, SawnLumberType,
CommercialGrade, ReferenceDesignValueType, LoadAppliedToNarrowFace);
}
return C_F;
}
public double GetRepetitiveMemberFactor(bool IsRepetitive,
double Spacing,
double Thickness,
SawnLumberType SawnLumberType)
{
//NDS 2015 Section 4.3.9
if (IsRepetitive == true)
{
if (Spacing > 24)
{
return 1.0;
}
else
{
//return 1.15;
return GetRepetitiveCoefficientFromReferenceTable(Thickness, SawnLumberType);
}
}
else
{
return 1.0;
}
}
public double GetSizeFactor(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType,
bool LoadAppliedToNarrowFace = true
)
{
double C_F;
if (Thickness >= 5 && Depth > 12.0)
{
// NDS 2015 Section 4.3.6.2
C_F = Math.Pow(12 / Depth, 1 / 9.0);
C_F = C_F > 1.0 ? 1.0 : C_F;
}
else
{
C_F = GetSizeCoefficientFromReferenceTable(Depth, Thickness, SawnLumberType,
CommercialGrade, ReferenceDesignValueType, LoadAppliedToNarrowFace);
}
return(C_F);
}
private double GetFlatUseCoefficientFromReferenceTable(
double Depth, double Thickness,
SawnLumberType SawnLumberType,
CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType
)
{
double b = Depth;
double t = Thickness;
double C_fu = 1.0;
switch (SawnLumberType)
{
case SawnLumberType.DimensionLumber:
C_fu = GetDimensionalLumberC_fu(b, t); break; //4A
case SawnLumberType.SouthernPineDimensionLumber: //4B
C_fu = GetSPDimensionalLumberC_fu(b, t); break;
case SawnLumberType.MechanicallyGradedDimensionLumber: //4C
C_fu = GetMechanicallyGradedLumberC_fu(b, t); break;
case SawnLumberType.VisuallyGradedTimbers: //4D
C_fu = GetTimberC_fu(b, t, CommercialGrade, ReferenceDesignValueType); break;
case SawnLumberType.VisuallyGradedDecking: //4E
C_fu = GetDeckingC_fu(); break;
case SawnLumberType.NonNorthAmericanVisuallyGradedDimensionLumber: //4F
C_fu = GetNonNorthAmericanLumberC_fu(b, t); break;
default: //4A
C_fu = GetDimensionalLumberC_fu(b, t); break;
}
return(C_fu);
}
