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;
}
private double GetSPDimensionalLumberC_F(double b, double t, CommercialGrade CommercialGrade)
{
double C_F = 1.0;
if (CommercialGrade != CommercialGrade.DenseStructural65 &&
CommercialGrade != CommercialGrade.DenseStructural72 &&
CommercialGrade != CommercialGrade.DenseStructural86)
{
if (t == 4 && b >= 8)
{
C_F = 1.1;
}
else if (b > 12)
{
C_F = 0.9;
}
}
else
{
if (b > 12)
{
C_F = Math.Pow(12 / d, 1 / 9.0);
}
}
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;
}
public static string GetCommercialGradeString(CommercialGrade Grade)
{
string GradeString = "";
switch (Grade)
{
case CommercialGrade.SelectStructural:
GradeString = "Select Structural";
break;
case CommercialGrade.No1:
GradeString = "No.1";
break;
case CommercialGrade.No2:
GradeString = "No.2";
break;
case CommercialGrade.No3:
GradeString = "No.3";
break;
case CommercialGrade.Stud:
GradeString = "Stud";
break;
case CommercialGrade.Construction:
GradeString = "Construction";
break;
case CommercialGrade.Standard:
GradeString = "Standard";
break;
case CommercialGrade.Utility:
GradeString = "Utility";
break;
case CommercialGrade.ClearStructural:
GradeString = "Clear Structural";
break;
case CommercialGrade.SelectStructuralOpenGrain:
GradeString = "Select Structural Open Grain";
break;
case CommercialGrade.No1OpenGrain:
GradeString = "No.1 Open Grain";
break;
case CommercialGrade.No2OpenGrain:
GradeString = "No.2 Open Grain";
break;
case CommercialGrade.No3OpenGrain:
GradeString = "No.3 Open Grain";
break;
case CommercialGrade.No1AndBetter:
GradeString = "No.1 And Better";
break;
default:
break;
}
return GradeString;
}
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 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 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);
}
private double GetDimensionalLumberC_F(double Depth, double Thickness, CommercialGrade Grade, ReferenceDesignValueType ReferenceDesignValueType)
{
double SizeFactor;
string GradeString = "Other";
if (Grade == CommercialGrade.Standard || Grade == CommercialGrade.Construction)
{
SizeFactor = 1.0;
}
else
{
double b = Math.Ceiling(Depth);
double t = Math.Ceiling(Thickness);
//Adjust thickness
if (t <= 3)
{
t = 3.0;
}
else if (t > 3 && t <= 5)
{
t = 4.0;
}
else
{
throw new Exception("Use timber values for elements having over 5 inches in thickness.");
}
//adjust the values for lookup (for depth)
if (Grade == CommercialGrade.Utility)
{
GradeString = Grade.ToString();
if (b <= 3)
{
b = 3;
}
else
{
b = 4;
}
}
else if (Grade == CommercialGrade.Stud)
{
GradeString = Grade.ToString();
if (b <= 4)
{
b = 4;
}
else if (b >= 7)
{
b = 8;
}
}
else
{
GradeString = "Other";
//Adjust depth
if (b <= 4)
{
b = 4;
}
else if (b == 7)
{
b = 8;
}
else if (b == 9)
{
b = 10;
}
else if (b >= 10)
{
b = 14;
}
}
#region Read Table Data
var Tv11 = new { Grade = "", Depth = 0.0, Thickness = 0.0, Fb = 0.0, Ft = 0.0, Fc = 0.0 }; // sample
var ResultList = ListFactory.MakeList(Tv11);
using (StringReader reader = new StringReader(Resources.NDS2015_Table4A_SizeFactor))
{
string line;
while ((line = reader.ReadLine()) != null)
{
string[] Vals = line.Split(',');
if (Vals.Count() == 6)
{
string _Grade = Vals[0];
double _Depth = double.Parse(Vals[1], CultureInfo.InvariantCulture);
double _Thickness = double.Parse(Vals[2], CultureInfo.InvariantCulture);
double _Fb = double.Parse(Vals[3], CultureInfo.InvariantCulture);
double _Ft = double.Parse(Vals[4], CultureInfo.InvariantCulture);
double _Fc = double.Parse(Vals[5], CultureInfo.InvariantCulture);
ResultList.Add(new
{
Grade = _Grade,
Depth = _Depth,
Thickness = _Thickness,
Fb = _Fb,
Ft = _Ft,
Fc = _Fc
});
}
}
}
#endregion
var RValues = from v in ResultList
where
(v.Grade == GradeString &&
v.Depth == b &&
v.Thickness == t)
select v;
var foundValue = (RValues.ToList()).FirstOrDefault();
if (foundValue == null)
{
throw new Exception("Combination of lumber grade and size was not found. Check input");
}
else
{
switch (ReferenceDesignValueType)
{
case ReferenceDesignValueType.Bending:
SizeFactor = foundValue.Fb;
break;
case ReferenceDesignValueType.TensionParallelToGrain:
SizeFactor = foundValue.Ft;
break;
case ReferenceDesignValueType.CompresionParallelToGrain:
SizeFactor = foundValue.Fc;
break;
default:
SizeFactor = 1.0;
break;
}
}
if (SizeFactor == 0)
{
throw new Exception("Combination of lumber grade and size was not found. Check input");
}
}
return(SizeFactor);
}
private double GetTimberC_fu(double b, double t, CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType)
{
double C_fu = 1.0;
if (CommercialGrade == Entities.CommercialGrade.SelectStructural)
{
if (ReferenceDesignValueType == Entities.ReferenceDesignValueType.Bending)
{
C_fu = 0.86;
}
else if (ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin ||
ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin)
{
C_fu = 1.0;
}
else
{
C_fu = 1.0;
}
}
if (CommercialGrade == Entities.CommercialGrade.No2)
{
if (ReferenceDesignValueType == Entities.ReferenceDesignValueType.Bending)
{
C_fu = 1.0;
}
else if (ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin ||
ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin)
{
C_fu = 1.0;
}
else
{
C_fu = 1.0;
}
}
else
{
//(CommercialGrade == Entities.CommercialGrade.No1)
if (ReferenceDesignValueType == Entities.ReferenceDesignValueType.Bending)
{
C_fu = 0.74;
}
else if (ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin ||
ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin)
{
C_fu = 0.9;
}
else
{
C_fu = 1.0;
}
}
return(C_fu);
}
public static string GetCommercialGradeString(CommercialGrade Grade)
{
string GradeString = "";
switch (Grade)
{
case CommercialGrade.SelectStructural:
GradeString = "Select Structural";
break;
case CommercialGrade.No1:
GradeString = "No.1";
break;
case CommercialGrade.No2:
GradeString = "No.2";
break;
case CommercialGrade.No3:
GradeString = "No.3";
break;
case CommercialGrade.Stud:
GradeString = "Stud";
break;
case CommercialGrade.Construction:
GradeString = "Construction";
break;
case CommercialGrade.Standard:
GradeString = "Standard";
break;
case CommercialGrade.Utility:
GradeString = "Utility";
break;
case CommercialGrade.ClearStructural:
GradeString = "Clear Structural";
break;
case CommercialGrade.SelectStructuralOpenGrain:
GradeString = "Select Structural Open Grain";
break;
case CommercialGrade.No1OpenGrain:
GradeString = "No.1 Open Grain";
break;
case CommercialGrade.No2OpenGrain:
GradeString = "No.2 Open Grain";
break;
case CommercialGrade.No3OpenGrain:
GradeString = "No.3 Open Grain";
break;
case CommercialGrade.No1AndBetter:
GradeString = "No.1 And Better";
break;
default:
break;
}
return(GradeString);
}
private double GetTimberC_fu(double b, double t, CommercialGrade CommercialGrade,
ReferenceDesignValueType ReferenceDesignValueType)
{
double C_fu = 1.0;
if (CommercialGrade == Entities.CommercialGrade.SelectStructural)
{
if (ReferenceDesignValueType == Entities.ReferenceDesignValueType.Bending)
{
C_fu = 0.86;
}
else if (ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin ||
ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin)
{
C_fu = 1.0;
}
else
{
C_fu = 1.0;
}
}
if (CommercialGrade == Entities.CommercialGrade.No2)
{
if (ReferenceDesignValueType == Entities.ReferenceDesignValueType.Bending)
{
C_fu =1.0;
}
else if (ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin ||
ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin)
{
C_fu = 1.0;
}
else
{
C_fu = 1.0;
}
}
else
{
//(CommercialGrade == Entities.CommercialGrade.No1)
if (ReferenceDesignValueType == Entities.ReferenceDesignValueType.Bending)
{
C_fu =0.74;
}
else if (ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin ||
ReferenceDesignValueType == ReferenceDesignValueType.ModulusOfElasticityMin)
{
C_fu = 0.9;
}
else
{
C_fu = 1.0;
}
}
return C_fu;
}
private double GetDimensionalLumberC_F(double Depth, double Thickness, CommercialGrade Grade, ReferenceDesignValueType ReferenceDesignValueType)
{
double SizeFactor;
string GradeString = "Other";
if (Grade == CommercialGrade.Standard || Grade == CommercialGrade.Construction)
{
SizeFactor = 1.0;
}
else
{
double b = Math.Ceiling(Depth);
double t = Math.Ceiling(Thickness);
//Adjust thickness
if (t <= 3)
{
t = 3.0;
}
else if (t > 3 && t <= 5)
{
t = 4.0;
}
else
{
throw new Exception("Use timber values for elements having over 5 inches in thickness.");
}
//adjust the values for lookup (for depth)
if (Grade == CommercialGrade.Utility)
{
GradeString = Grade.ToString();
if (b<=3)
{
b = 3;
}
else
{
b = 4;
}
}
else if (Grade == CommercialGrade.Stud)
{
GradeString = Grade.ToString();
if (b <= 4)
{
b = 4;
}
else if (b >= 7)
{
b = 8;
}
}
else
{
GradeString = "Other";
//Adjust depth
if (b<=4)
{
b = 4;
}
else if (b==7)
{
b = 8;
}
else if (b == 9)
{
b = 10;
}
else if (b>=10)
{
b = 14;
}
}
#region Read Table Data
var Tv11 = new { Grade="", Depth=0.0, Thickness=0.0, Fb=0.0, Ft=0.0, Fc=0.0}; // sample
var ResultList = ListFactory.MakeList(Tv11);
using (StringReader reader = new StringReader(Resources.NDS2015_Table4A_SizeFactor))
{
string line;
while ((line = reader.ReadLine()) != null)
{
string[] Vals = line.Split(',');
if (Vals.Count() == 6)
{
string _Grade = Vals[0];
double _Depth =double.Parse(Vals[1],CultureInfo.InvariantCulture);
double _Thickness =double.Parse(Vals[2],CultureInfo.InvariantCulture);
double _Fb =double.Parse(Vals[3],CultureInfo.InvariantCulture);
double _Ft =double.Parse(Vals[4],CultureInfo.InvariantCulture);
double _Fc =double.Parse(Vals[5],CultureInfo.InvariantCulture);
ResultList.Add(new
{
Grade = _Grade ,
Depth = _Depth ,
Thickness= _Thickness,
Fb = _Fb ,
Ft = _Ft ,
Fc = _Fc
});
}
}
}
#endregion
var RValues = from v in ResultList
where
(v.Grade == GradeString &&
v.Depth == b &&
v.Thickness ==t)
select v;
var foundValue = (RValues.ToList()).FirstOrDefault();
if (foundValue == null)
{
throw new Exception("Combination of lumber grade and size was not found. Check input");
}
else
{
switch (ReferenceDesignValueType)
{
case ReferenceDesignValueType.Bending:
SizeFactor = foundValue.Fb;
break;
case ReferenceDesignValueType.TensionParallelToGrain:
SizeFactor = foundValue.Ft;
break;
case ReferenceDesignValueType.CompresionParallelToGrain:
SizeFactor = foundValue.Fc;
break;
default:
SizeFactor = 1.0;
break;
}
}
if (SizeFactor == 0)
{
throw new Exception("Combination of lumber grade and size was not found. Check input");
}
}
return SizeFactor;
}
private double GetSPDimensionalLumberC_F(double b, double t, CommercialGrade CommercialGrade)
{
double C_F = 1.0;
if (CommercialGrade != CommercialGrade.DenseStructural65
&& CommercialGrade != CommercialGrade.DenseStructural72
&& CommercialGrade != CommercialGrade.DenseStructural86)
{
if (t==4&& b>=8)
{
C_F = 1.1;
}
else if (b>12)
{
C_F = 0.9;
}
}
else
{
if (b>12)
{
C_F = Math.Pow(12 / d, 1 / 9.0);
}
}
return C_F;
}
