public static HndzMaterial[] SetDefaultMaterials() { SAPMaterial[] sapMaterials = SAP2000API.SetDefaultMaterials(); HndzMaterial[] hndzMaterials = new HndzMaterial[sapMaterials.Length]; for (int i = 0; i < sapMaterials.Length; i++) { sapMaterials[i].ConvertFromHndzMaterial((HndzStructuralMaterial)hndzMaterials[i]); } return(hndzMaterials); }