data/concrete_data.json

{
  "C24": {
    "strength": 24.0,
    "density": 2400.0,
    "elastic_modulus": 43111.01947298393,
    "poissons_ratio": 0.18
  },
  "C30": {
    "strength": 30.0,
    "density": 2400.0,
    "elastic_modulus": 48199.58506045462,
    "poissons_ratio": 0.18
  },
  "C35": {
    "strength": 35.0,
    "density": 2400.0,
    "elastic_modulus": 52061.50209127662,
    "poissons_ratio": 0.18
  },
  "C40": {
    "strength": 40.0,
    "density": 2400.0,
    "elastic_modulus": 55656.08681896348,
    "poissons_ratio": 0.18
  }
}