public List <double> CalculateSeismicLevelLoads(double k, double Cs, List <StorySeismicData> storyData)
{
List <StorySeismicLoad> loads = new List <StorySeismicLoad>();
//Sum(w_i*h_i^k)
int N = storyData.Count();
double Sum_w_h_k = 0.0;
double W = 0.0;
foreach (var story in storyData)
{
double wi = story.SeismicWeight;
double hi = story.ElevationFromBase;
Sum_w_h_k = Sum_w_h_k + wi * Math.Pow(hi, k);
W = W + wi;
}
double Vb = this.GetBaseShearVb(Cs, W);
List <double> StoryForces = new List <double>();
foreach (var story in storyData)
{
double wx = story.SeismicWeight;
double hx = story.ElevationFromBase;
//(12.8-12)
double Cvx = wx * Math.Pow(hx, k) / Sum_w_h_k;
//(12.8-11)
double Fx = Cvx * Vb;
StorySeismicLoad load = new StorySeismicLoad()
{
Cvx = Cvx,
Fx = Fx,
StoryId = story.StoryId,
ElevationFromBase = story.ElevationFromBase,
Weight = story.SeismicWeight
};
loads.Add(load);
StoryForces.Add(Fx);
}
return(StoryForces);
}
public List<double> CalculateSeismicLevelLoads( double k, double Cs, List<StorySeismicData> storyData)
{
List<StorySeismicLoad> loads = new List<StorySeismicLoad>();
//Sum(w_i*h_i^k)
int N = storyData.Count();
double Sum_w_h_k = 0.0;
double W = 0.0;
foreach (var story in storyData)
{
double wi = story.SeismicWeight;
double hi = story.ElevationFromBase;
Sum_w_h_k = Sum_w_h_k + wi * Math.Pow(hi, k);
W = W + wi;
}
double Vb = this.GetBaseShearVb(Cs, W);
List<double> StoryForces = new List<double>();
foreach (var story in storyData)
{
double wx = story.SeismicWeight;
double hx = story.ElevationFromBase;
//(12.8-12)
double Cvx = wx * Math.Pow(hx, k) / Sum_w_h_k;
//(12.8-11)
double Fx = Cvx * Vb;
StorySeismicLoad load = new StorySeismicLoad()
{
Cvx = Cvx,
Fx = Fx,
StoryId = story.StoryId,
ElevationFromBase = story.ElevationFromBase,
Weight = story.SeismicWeight
};
loads.Add(load);
StoryForces.Add(Fx);
}
return StoryForces;
}
