{
  "revision": "R7 triangular isolated prototype",
  "construction_ready": false,
  "capacity_pass": null,
  "calculation_complete": true,
  "source_sha256": "012721c446b210afbc61a46d1ec3c8cd48b629abd2082585509a10c9e6ca7f69",
  "inputs_sha256": {
    "build/r7_triangular_node/structure/inputs/geometry_def088fda7a12c5a.json": "def088fda7a12c5a0f2f99e875e9518ca83bc5447d7ef68819a003f57505073d",
    "build/r7_foot_revision/structure/qualification_cases.json": "3ae328dcf44361c6603a5aeba49fa819696a883c4bfa3f8b1e4030e33afa65b9",
    "build/r7_foot_revision/structure/inputs/candidate_foot_24173701444d21f3.json": "24173701444d21f3b176ab822e871429ebc74b9657da1d3c7f812f71dc834a32"
  },
  "geometry_original_path": "build/r7_triangular_node/geometry/locked_keys/prototype.json",
  "geometry_source_sha256": "def088fda7a12c5a0f2f99e875e9518ca83bc5447d7ef68819a003f57505073d",
  "input_changed_during_run": false,
  "source_changed_during_run": false,
  "frozen_geometry": "build/r7_triangular_node/structure/inputs/geometry_def088fda7a12c5a.json",
  "materials": {
    "SP64_FSF_scenario": {
      "tension": 3.465,
      "compression": 5.197500000000001,
      "flat_bending": 4.95,
      "panel_shear": 4.455,
      "rolling_shear": 0.5940000000000001,
      "face_bearing": 2.9699999999999998,
      "basis": "SP64 table8 weakest listed in-plane direction; flatwise bending across face grain. Duration .66 and wet .75 are declared conservative scenario choices; lot/type applicability must be established.",
      "G_panel_MPa": 750.0,
      "G_planar_MPa": 189.0,
      "G_planar_basis": "Explicit comparison assumption189MPa; SP table does not certify this transverse modulus for selected lot"
    },
    "Metsa24_structural_comparison": {
      "tension": 18.1,
      "compression": 12.55,
      "flat_bending": 17.2,
      "panel_shear": 4.75,
      "rolling_shear": 1.195,
      "face_bearing": 2.9699999999999998,
      "basis": "Metsa24 DoP characteristic minima, kmod=.65, gammaM=1.3 for connections. Face-bearing cap2.97MPa is a separate SP-derived assumption. NOT properties assigned to SVEZA or purchased stock.",
      "G_panel_MPa": 620.0,
      "G_planar_MPa": 189.0,
      "G_planar_basis": "Metsa24 weaker mean planar shear modulus"
    },
    "SP64_oriented_scenario": {
      "tension": 3.465,
      "compression": 5.197500000000001,
      "flat_bending": 4.95,
      "panel_shear": 4.455,
      "rolling_shear": 0.5940000000000001,
      "face_bearing": 2.9699999999999998,
      "basis": "Same .66 duration and .75 wet factors as weakest SP scenario, but section direction follows the explicit face-grain assignment. Between tabulated compression directions the lower10.5*.495 cap is retained. Not a certification of24mm17ply material.",
      "directional": {
        "tension": [
          10.395,
          6.6825
        ],
        "compression": [
          8.91,
          6.435
        ],
        "flat_bending": [
          11.879999999999999,
          4.95
        ]
      },
      "G_panel_MPa": 750.0,
      "G_planar_MPa": 189.0,
      "G_planar_basis": "Explicit comparison assumption189MPa; SP table does not certify this transverse modulus for selected lot"
    }
  },
  "summary": [
    {
      "material": "Metsa24_structural_comparison",
      "mode": "pin_hinge_Y",
      "load_basis": "normative_mean_wind_component_with_aerodynamic_analogy_not_complete_wind",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 2.01622762771956,
      "minimum_proportional_load_multiplier_upper_bound": 0.4959757451250893,
      "governing_case": "Q06",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 106.09,
          "net_area_mm2": 1527.658844765027,
          "net_width_mm": 63.65245186520946,
          "torsion_panel_stress_per_Nmm": 0.00014753689266558848,
          "torsion_planar_stress_per_Nmm": 9.15023462669348e-05,
          "capacity": 1.0,
          "utilisation": 2.0162278303423466
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "pin_hinge_Y",
      "load_basis": "research_envelope",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 4.775399122040772,
      "minimum_proportional_load_multiplier_upper_bound": 0.2094065803598525,
      "governing_case": "Q08",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 34.79,
          "net_area_mm2": 2600.404240002198,
          "net_width_mm": 108.35017666675824,
          "torsion_panel_stress_per_Nmm": 7.52830170138932e-05,
          "torsion_planar_stress_per_Nmm": 3.28502058024601e-05,
          "capacity": 1.0,
          "utilisation": 4.775399600580687
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "pin_hinge_Y",
      "load_basis": "self_weight",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.08194737216926189,
      "minimum_proportional_load_multiplier_upper_bound": 12.202953841332521,
      "governing_case": "Q10",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.8419613195224,
          "net_width_mm": 65.45174838831343,
          "torsion_panel_stress_per_Nmm": 0.00014165567703790547,
          "torsion_planar_stress_per_Nmm": 8.702893047850475e-05,
          "capacity": 1.0,
          "utilisation": 0.08194738136399983
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "pin_hinge_Y",
      "load_basis": "snow_coefficients_with_shape_assumptions",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.8267938673685677,
      "minimum_proportional_load_multiplier_upper_bound": 1.209491312729126,
      "governing_case": "Q12",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D1",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.841961319523,
          "net_width_mm": 65.45174838831346,
          "torsion_panel_stress_per_Nmm": 0.00014165567703790547,
          "torsion_planar_stress_per_Nmm": 8.702893047850475e-05,
          "capacity": 1.0,
          "utilisation": 0.8267939510479665
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "stage4_reference",
      "load_basis": "normative_mean_wind_component_with_aerodynamic_analogy_not_complete_wind",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 2.763975110256026,
      "minimum_proportional_load_multiplier_upper_bound": 0.3617977587024546,
      "governing_case": "Q00",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_K1_LEG-1",
          "axis": 0,
          "position_mm": -10.3,
          "net_area_mm2": 960.0,
          "net_width_mm": 40.0,
          "torsion_panel_stress_per_Nmm": 0.00021397311318476604,
          "torsion_planar_stress_per_Nmm": 0.00012213791670082186,
          "capacity": 1.0,
          "utilisation": 2.763975387653541
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "stage4_reference",
      "load_basis": "research_envelope",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 4.159263944944997,
      "minimum_proportional_load_multiplier_upper_bound": 0.24042715567867723,
      "governing_case": "Q02",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D1",
          "axis": 0,
          "position_mm": 109.34,
          "net_area_mm2": 1574.1999112824076,
          "net_width_mm": 65.59166297010032,
          "torsion_panel_stress_per_Nmm": 0.00014147874244917332,
          "torsion_planar_stress_per_Nmm": 8.678617987066386e-05,
          "capacity": 1.0,
          "utilisation": 4.159264361871443
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "stage4_reference",
      "load_basis": "self_weight",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.24457914548846296,
      "minimum_proportional_load_multiplier_upper_bound": 4.0886560381214965,
      "governing_case": "Q04",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_K1_LEG1",
          "axis": 0,
          "position_mm": 1.7,
          "net_area_mm2": 960.0,
          "net_width_mm": 40.0,
          "torsion_panel_stress_per_Nmm": 0.00021397311318476604,
          "torsion_planar_stress_per_Nmm": 0.00012213791670082186,
          "capacity": 1.0,
          "utilisation": 0.24457917094639253
        }
      ]
    },
    {
      "material": "Metsa24_structural_comparison",
      "mode": "stage4_reference",
      "load_basis": "snow_coefficients_with_shape_assumptions",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 3.0078679773260206,
      "minimum_proportional_load_multiplier_upper_bound": 0.33246140041325717,
      "governing_case": "Q05",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_K1_LEG-1",
          "axis": 0,
          "position_mm": -10.3,
          "net_area_mm2": 960.0,
          "net_width_mm": 40.0,
          "torsion_panel_stress_per_Nmm": 0.00021397311318476604,
          "torsion_planar_stress_per_Nmm": 0.00012213791670082186,
          "capacity": 1.0,
          "utilisation": 3.0078682791128224
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "normative_mean_wind_component_with_aerodynamic_analogy_not_complete_wind",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 3.4216143070973195,
      "minimum_proportional_load_multiplier_upper_bound": 0.29225970850242805,
      "governing_case": "Q06",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 106.09,
          "net_area_mm2": 1527.658844765027,
          "net_width_mm": 63.65245186520946,
          "torsion_panel_stress_per_Nmm": 0.00015374700314940503,
          "torsion_planar_stress_per_Nmm": 8.957528212860877e-05,
          "capacity": 1.0,
          "utilisation": 3.4216146502589178
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "research_envelope",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 8.485117402577085,
      "minimum_proportional_load_multiplier_upper_bound": 0.1178534076259548,
      "governing_case": "Q08",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 15.77,
          "net_area_mm2": 2679.1729975495823,
          "net_width_mm": 111.6322082312326,
          "torsion_panel_stress_per_Nmm": 7.425655973556693e-05,
          "torsion_planar_stress_per_Nmm": 2.9863353422917002e-05,
          "capacity": 1.0,
          "utilisation": 8.485118252088837
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "self_weight",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.157380063793926,
      "minimum_proportional_load_multiplier_upper_bound": 6.354044952665691,
      "governing_case": "Q10",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 89.7255,
          "net_area_mm2": 2815.0087629616182,
          "net_width_mm": 117.29203179006743,
          "torsion_panel_stress_per_Nmm": 7.369757402425953e-05,
          "torsion_planar_stress_per_Nmm": 3.0232227347556743e-05,
          "capacity": 1.0,
          "utilisation": 0.1573800805319332
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "snow_coefficients_with_shape_assumptions",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 1.4496760981936294,
      "minimum_proportional_load_multiplier_upper_bound": 0.6898092623904409,
      "governing_case": "Q11",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.8419613195224,
          "net_width_mm": 65.45174838831343,
          "torsion_panel_stress_per_Nmm": 0.00014744676849098366,
          "torsion_planar_stress_per_Nmm": 8.516145017938392e-05,
          "capacity": 1.0,
          "utilisation": 1.4496762441612459
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "stage4_reference",
      "load_basis": "normative_mean_wind_component_with_aerodynamic_analogy_not_complete_wind",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 4.9221308896240945,
      "minimum_proportional_load_multiplier_upper_bound": 0.20316404062070167,
      "governing_case": "Q00",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D1",
          "axis": 0,
          "position_mm": 106.09,
          "net_area_mm2": 1527.658844765027,
          "net_width_mm": 63.65245186520946,
          "torsion_panel_stress_per_Nmm": 0.00015374700314940503,
          "torsion_planar_stress_per_Nmm": 8.957528212860877e-05,
          "capacity": 1.0,
          "utilisation": 4.922131382837237
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "stage4_reference",
      "load_basis": "research_envelope",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 7.249915291443032,
      "minimum_proportional_load_multiplier_upper_bound": 0.13793264607936664,
      "governing_case": "Q02",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D1",
          "axis": 0,
          "position_mm": 109.34,
          "net_area_mm2": 1574.1999112824076,
          "net_width_mm": 65.59166297010032,
          "torsion_panel_stress_per_Nmm": 0.000147261460578939,
          "torsion_planar_stress_per_Nmm": 8.493325676558504e-05,
          "capacity": 1.0,
          "utilisation": 7.249916017434594
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "stage4_reference",
      "load_basis": "self_weight",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.4686478365056645,
      "minimum_proportional_load_multiplier_upper_bound": 2.1337983921065495,
      "governing_case": "Q04",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_K1_LEG1",
          "axis": 0,
          "position_mm": 12.28,
          "net_area_mm2": 960.0,
          "net_width_mm": 40.0,
          "torsion_panel_stress_per_Nmm": 0.0002210144317194027,
          "torsion_planar_stress_per_Nmm": 0.00011906976009174208,
          "capacity": 1.0,
          "utilisation": 0.46864788437186294
        }
      ]
    },
    {
      "material": "SP64_FSF_scenario",
      "mode": "stage4_reference",
      "load_basis": "snow_coefficients_with_shape_assumptions",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 5.238822482246062,
      "minimum_proportional_load_multiplier_upper_bound": 0.19088258924384588,
      "governing_case": "Q05",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.8419613195224,
          "net_width_mm": 65.45174838831343,
          "torsion_panel_stress_per_Nmm": 0.00014744676849098366,
          "torsion_planar_stress_per_Nmm": 8.516145017938392e-05,
          "capacity": 1.0,
          "utilisation": 5.238823007128339
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "normative_mean_wind_component_with_aerodynamic_analogy_not_complete_wind",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 3.4215441578367676,
      "minimum_proportional_load_multiplier_upper_bound": 0.29226570047607936,
      "governing_case": "Q06",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 106.09,
          "net_area_mm2": 1527.658844765027,
          "net_width_mm": 63.65245186520946,
          "torsion_panel_stress_per_Nmm": 0.00015374700314940503,
          "torsion_planar_stress_per_Nmm": 8.957528212860877e-05,
          "capacity": 1.0,
          "utilisation": 3.421544500991319
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "research_envelope",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 8.485117402577183,
      "minimum_proportional_load_multiplier_upper_bound": 0.11785340762595344,
      "governing_case": "Q08",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "B_E137",
          "axis": 0,
          "position_mm": 891.4533,
          "net_area_mm2": 4800.0,
          "net_width_mm": 200.0,
          "torsion_panel_stress_per_Nmm": 3.0591379887509856e-05,
          "torsion_planar_stress_per_Nmm": 1.1427607281873865e-05,
          "capacity": 1.0,
          "utilisation": 8.48511825208893
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "self_weight",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.15738004554283744,
      "minimum_proportional_load_multiplier_upper_bound": 6.3540456895331685,
      "governing_case": "Q10",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 89.7255,
          "net_area_mm2": 2815.0087629616182,
          "net_width_mm": 117.29203179006743,
          "torsion_panel_stress_per_Nmm": 7.369757402425953e-05,
          "torsion_planar_stress_per_Nmm": 3.0232227347556743e-05,
          "capacity": 1.0,
          "utilisation": 0.15738006228084375
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "pin_hinge_Y",
      "load_basis": "snow_coefficients_with_shape_assumptions",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 1.449619190644642,
      "minimum_proportional_load_multiplier_upper_bound": 0.6898363421605246,
      "governing_case": "Q11",
      "governing": [
        {
          "kind": "section_normal_interaction",
          "body": "TN_K1_LEG-1",
          "axis": 1,
          "position_mm": 20.02,
          "net_area_mm2": 1024.8000000000002,
          "net_width_mm": 42.7,
          "sigma_sign": -1,
          "capacity": 1.0,
          "utilisation": 1.44961933660657
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "stage4_reference",
      "load_basis": "normative_mean_wind_component_with_aerodynamic_analogy_not_complete_wind",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 4.922130889624218,
      "minimum_proportional_load_multiplier_upper_bound": 0.20316404062069657,
      "governing_case": "Q00",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D1",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.841961319523,
          "net_width_mm": 65.45174838831346,
          "torsion_panel_stress_per_Nmm": 0.00014744676849098366,
          "torsion_planar_stress_per_Nmm": 8.516145017938392e-05,
          "capacity": 1.0,
          "utilisation": 4.92213138283749
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "stage4_reference",
      "load_basis": "research_envelope",
      "case_count": 2,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 7.249905697304034,
      "minimum_proportional_load_multiplier_upper_bound": 0.1379328286120828,
      "governing_case": "Q02",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.8419613195224,
          "net_width_mm": 65.45174838831343,
          "torsion_panel_stress_per_Nmm": 0.00014744676849098366,
          "torsion_planar_stress_per_Nmm": 8.516145017938392e-05,
          "capacity": 1.0,
          "utilisation": 7.2499064232946875
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "stage4_reference",
      "load_basis": "self_weight",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 0.4686478249532058,
      "minimum_proportional_load_multiplier_upper_bound": 2.1337984447059997,
      "governing_case": "Q04",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "TN_D0",
          "axis": 0,
          "position_mm": 101.7255,
          "net_area_mm2": 1570.8419613195224,
          "net_width_mm": 65.45174838831343,
          "torsion_panel_stress_per_Nmm": 0.00014744676849098366,
          "torsion_planar_stress_per_Nmm": 8.516145017938392e-05,
          "capacity": 1.0,
          "utilisation": 0.4686478728179911
        }
      ]
    },
    {
      "material": "SP64_oriented_scenario",
      "mode": "stage4_reference",
      "load_basis": "snow_coefficients_with_shape_assumptions",
      "case_count": 1,
      "no_equilibrium_count": 0,
      "max_utilisation_lower_bound": 5.238660372850552,
      "minimum_proportional_load_multiplier_upper_bound": 0.1908884960709645,
      "governing_case": "Q05",
      "governing": [
        {
          "kind": "section_shear_torsion_proxy",
          "body": "B_E136",
          "axis": 0,
          "position_mm": 830.61,
          "net_area_mm2": 3960.282136411399,
          "net_width_mm": 165.01175568380827,
          "torsion_panel_stress_per_Nmm": 6.335068537296579e-05,
          "torsion_planar_stress_per_Nmm": 2.747223335980331e-05,
          "capacity": 1.0,
          "utilisation": 5.2386608977166444
        }
      ]
    }
  ],
  "selfcheck": {
    "rectangle_section": true,
    "contact_area_and_centroid": true,
    "wrench_transfer_units": true,
    "isotropic_square_torsion_K": 0.14057701495615457,
    "isotropic_square_torsion_max_stress": 4.803875537719986
  },
  "limitations": [
    "Archived13 two-leg qualification benchmarks, not a new full-frame force envelope or current mass/stiffness verification.",
    "Every rib, keeper and both legs has independent six-component equilibrium. Central plate/toe support fixed only as a stated local boundary.",
    "Static minimax allows stress redistribution and both separated contact signs without elastic compatibility. Reciprocal index is an upper bound on the proportional benchmark scale in this discretised material model, NOT an approved Rd.",
    "Section normal and shear/torsion checks are net-section beam-resultant screens. Local orthotropic notch fracture, delamination, ligament load partition and pressure compatibility are not certified by this model.",
    "Face-bearing2.97MPa is a separate assumed cap even in the Metsä comparison; no unreported DoP value is invented.",
    "Zero friction, glue and preload strength credit. Retaining bolts are not assigned convenient structural reactions.",
    "Real clearance, coating and moisture change contact engagement. Geometry/CNC fit and manufacturing controls remain separately bound inputs.",
    "Slab and anchors excluded. Purchased lower-angle resistance is not inferred from rigid local support."
  ]
}
