public RigidAnalysis(BuildingLevelLateral2 lateralLevel, IEnumerable <AnalyticalWallLateral> walls,
IEnumerable <LateralLevelForce> forces, IEnumerable <LoadCase> loadCases, double Cd)
{
LateralLevel = lateralLevel;
Walls = walls.ToList();
Forces = forces.ToList();
LoadCases = loadCases.ToList();
this.Cd = Cd;
}
// Assumes that the centers of mass stack vertically, so we can apply the design story shear directly
public List <LateralLevelForce> GenerateAppliedLoadingAtLevel(BuildingLevelLateral2 lateralLevel)
{
var loads = new List <LateralLevelForce>();
BuildingLevel level = lateralLevel.Level;
Point2D CenterOfMass = lateralLevel.CenterOfMass;
SeismicStoryForce storyShears = _storyShears[level];
// Calculate direct seismic forces
loads.Add(new LateralLevelForce
{
Level = level,
DirectX = storyShears.X,
LoadPattern = LoadPattern.Seismic_East,
CenterOfForce = CenterOfMass
});
loads.Add(new LateralLevelForce
{
Level = level,
DirectX = (Force)(-storyShears.X),
LoadPattern = LoadPattern.Seismic_West,
CenterOfForce = CenterOfMass
});
loads.Add(new LateralLevelForce
{
Level = level,
DirectY = storyShears.Y,
LoadPattern = LoadPattern.Seismic_North,
CenterOfForce = CenterOfMass
});
loads.Add(new LateralLevelForce
{
Level = level,
DirectY = (Force)(-storyShears.Y),
LoadPattern = LoadPattern.Seismic_South,
CenterOfForce = CenterOfMass
});
// Calculate accidental seismic forces
Length lengthX = lateralLevel.LengthX;
Length lengthY = lateralLevel.LengthY;
AccidentalEccentricities eccentricities = lateralLevel.Eccentricities;
loads.Add(new LateralLevelForce
{
Level = level,
AccidentalT = (Moment)Result.Abs(eccentricities.SeismicX * lengthY * storyShears.X),
LoadPattern = LoadPattern.SeismicTorsion_XLoading,
CenterOfForce = CenterOfMass
});
loads.Add(new LateralLevelForce
{
Level = level,
AccidentalT = (Moment)Result.Abs(eccentricities.SeismicY * lengthX * storyShears.Y),
LoadPattern = LoadPattern.SeismicTorsion_YLoading,
CenterOfForce = CenterOfMass
});
return(loads);
}