{
  "starting": {
    "resultSchema": "infrastructure-screen-1",
    "contentVersion": "2.0.0",
    "modelVersion": "1.0.0",
    "lessonId": "facilities-phased-development",
    "model": "facilityScreen",
    "inputs": {
      "massKG": 1000,
      "areaM2": 1,
      "gravityMS2": 9.81,
      "coolingUnits": 7,
      "tonsPerUnit": 30,
      "kwPerTon": 3.51685
    },
    "outputs": {
      "averageKPa": 9.81,
      "installedThermalKW": 738.5385
    },
    "inputUnits": {
      "massKG": "kg",
      "areaM2": "m²",
      "gravityMS2": "m/s²",
      "coolingUnits": "units",
      "tonsPerUnit": "refrigeration tons/unit",
      "kwPerTon": "kW/ton"
    },
    "outputUnits": {
      "averageKPa": "kPa",
      "installedThermalKW": "kW"
    },
    "assumptions": [
      "Area pressure is uniformly averaged and cooling conversion uses the supplied coefficient.",
      "Use the structural screen for what it measures: Average gravity pressure equals mass × gravitational acceleration / area. A 1,000 kg assembly uniformly distributed over 1 m² gives 9.81 kPa using 9.81 m/s². Actual rack feet, wheels, transport loads, raised-floor panels, supporting structure and restraint are not captured by that average. Similarly, installed cooling nameplates are not automatically firm post-failure capacity at actual ambient and fluid conditions."
    ],
    "limitations": [
      "Educational screen only; no equipment selection, facility calibration, professional review or certification.",
      "No dynamics, protection coordination, site conditions or manufacturer-specific behavior are inferred.",
      "Historical facility account only; no present operating status or certification verified.",
      "No structural design, fire strategy, egress dimensions or construction approval."
    ],
    "sourceLocators": [
      {
        "id": "DCIE-R1",
        "chapter": 10,
        "pdfPages": [
          46,
          49
        ],
        "evidenceStatus": "manuscript-derived; not independent source verification"
      }
    ],
    "inputHash": "2c547fc6d6b56a79a772b75de120353a20e48b5085d626f2bbafdf35a39b8dda",
    "sourceRevision": "e4d47bd6616aa54e19c7da5ee4e2a98afe6209c1",
    "independentEngineeringVerification": false,
    "resultHash": "9d723ac551553690652916fdf178f673bce5d67dae15b0d08e55e711c3be4670"
  },
  "challenge": {
    "resultSchema": "infrastructure-screen-1",
    "contentVersion": "2.0.0",
    "modelVersion": "1.0.0",
    "lessonId": "facilities-phased-development",
    "model": "facilityScreen",
    "inputs": {
      "massKG": 1500,
      "areaM2": 1.2,
      "gravityMS2": 9.81,
      "coolingUnits": 7,
      "tonsPerUnit": 30,
      "kwPerTon": 3.51685
    },
    "outputs": {
      "averageKPa": 12.2625,
      "installedThermalKW": 738.5385
    },
    "inputUnits": {
      "massKG": "kg",
      "areaM2": "m²",
      "gravityMS2": "m/s²",
      "coolingUnits": "units",
      "tonsPerUnit": "refrigeration tons/unit",
      "kwPerTon": "kW/ton"
    },
    "outputUnits": {
      "averageKPa": "kPa",
      "installedThermalKW": "kW"
    },
    "assumptions": [
      "Area pressure is uniformly averaged and cooling conversion uses the supplied coefficient.",
      "Use the structural screen for what it measures: Average gravity pressure equals mass × gravitational acceleration / area. A 1,000 kg assembly uniformly distributed over 1 m² gives 9.81 kPa using 9.81 m/s². Actual rack feet, wheels, transport loads, raised-floor panels, supporting structure and restraint are not captured by that average. Similarly, installed cooling nameplates are not automatically firm post-failure capacity at actual ambient and fluid conditions."
    ],
    "limitations": [
      "Educational screen only; no equipment selection, facility calibration, professional review or certification.",
      "No dynamics, protection coordination, site conditions or manufacturer-specific behavior are inferred.",
      "Historical facility account only; no present operating status or certification verified.",
      "No structural design, fire strategy, egress dimensions or construction approval."
    ],
    "sourceLocators": [
      {
        "id": "DCIE-R1",
        "chapter": 10,
        "pdfPages": [
          46,
          49
        ],
        "evidenceStatus": "manuscript-derived; not independent source verification"
      }
    ],
    "inputHash": "5a883fea7dc808d8ce8d2004772786ddd5b91c3ce9eb95d63917a7bd1e6f3c7f",
    "sourceRevision": "e4d47bd6616aa54e19c7da5ee4e2a98afe6209c1",
    "independentEngineeringVerification": false,
    "resultHash": "6d9467a7ec8417845122c415b269bcfca0b746576e3744bc5764dd00aada2181"
  },
  "fuel": null,
  "engineeringDecision": "HOLD"
}