{
  "status": "Proposed receiving and placement animated; reduced mechanical screens only",
  "paper_baseline": "Counterweighted heavy ascent and architectural context. This receiving route is an engineering reconstruction, not a mechanism established by the paper.",
  "architecture": "Selected ceiling location and wall envelopes inherited from heavy-placement-case.json. Selected 70t cuboid is not an identified surveyed block.",
  "invented_details": [
    "Supplied upright-carrier slipway and four independently controlled end-rope bundles for turning",
    "Two fixed28m segmented cedar guide rows at elevation66m, supported every metre, with separate turning and landing rope sets",
    "Four supplied ground haul areas with48,384 people,72 lanes per group and168 people per lane",
    "Two 4.45 m timber support sledges carry the horizontal beam between two fixed end-rope sets; after landing ropes take the weight, the empty sledges are withdrawn",
    "Independent sledge haul ropes and fixed redirect guides, controlled holding and staggered grip/regrip groups",
    "Temporary extensions of the chamber bearing surfaces for the sledge approach and retreat"
  ],
  "assumptions": {
    "rope": "70mm modern flax proxy;2.4kg/m;31200kgf indicative breaking load, divided by6 and reduced byhalf at bends. Selected allowance25,497.29N. Sharing/transient factor1.32.",
    "friction": "Guide\u03bc0.1, total wrap bound3\u03c0. Running slipway/rail\u03bc0.3 and starting\u03bc0.9 are selected sensitivity bounds from friction-assumptions.json, not matched historical measurements. No oil qualified.",
    "rope_gravity": "8,500N/circuit reserve. Route screens count unsupported end spans and the full exterior slope length at full rope weight, and supported terrace/ground lengths at drag\u03bc0.3. Maximum sampled end-route/haul-route reserve7,170.70N. Rope paths run across a supplied open terrace and along a prepared exterior track. Sag, finite fanout and the full growing-masonry corridor are not solved.",
    "crew": "72 independent rope lanes/group,168 people/lane,1.2m lane pitch,1.4m person pitch. Five staggered grip cohorts, four pulling and one regripping. The force calculation uses134/168 effective participation,79.8%, corresponding to the minimum pulling cohort count. The selected rectangle is86.4m by235.2m. Detailed human hand grips and synchronized load sharing remain proposed.",
    "head_timber": "Two fixed28m guide rows, with separate turning and landing sets. Contacts at0.11m pitch within each active bundle. Segmented cedar beams have gross0.8m diameter and selected net0.7m after grooves, supported every1m. Conservatively ten contacts concentrated at span centre. Timber16.16t within25t head/shoe reserve. Unloaded additional rope/fixture mass and local joins/grooves remain unresolved. The short timber-span check is conditional: the ghosted masonry rails and their long-span support/foundation system have not been qualified.",
    "balance": "Four idealized inclined rope bundles provide equal half-weight vertical end reactions and cancelling horizontal components. Constant-centre tipping is quasi-static; small acceleration corrections are below the selected2% tolerance. Differential start/stop control remains proposed. Every load handoff occurs at a fixed pose after physical contact; positive carrier/sledge/masonry support is checked against zero contact gap.",
    "stone": "Collars at\u00b13.5m along the8m stone. Full self-weight distributed over a7m support span with factor1.32. Selected geometry and mass remain a stress solid, not an identified surveyed stone.",
    "support_sledges": "Two frames each3.5m east-west by1.6m north-south,4.45m tall. Eight total0.3m square posts;0.3m top/base platforms;2t bracing reserve. Calculated frame/bracing mass7.70t within15t selected moving-carrier reserve. Check post compression, pinned Euler buckling at reduced cedar modulus, platform bending/shear and overturning with a0.5m high base pull. Both feet remain on the selected chamber wall envelopes, with supplied extensions east of the chamber. Bracing connections, runners and foundation qualification remain open.",
    "fixed_heads": "Stationary end ropes handle turning and landing. Two independent timber support sledges carry the beam horizontally between them. Fixed-head lateral reactions still require anchorage/foundation design.",
    "receiving_level": "The carrier starts with its underside1m above pavement and rises47.80864m to the48.80864m chamber-bearing surface. Receiving slipway and transfer runners share that elevation. The upright stone centre is54.00864m; it rises0.35m before tipping and settles0.1m onto the transfer sledges. The final stone centre is49.80864m.",
    "force_reference": "The underlying reduced force sizing retains its longer49.0317456m travel case; the receiving history uses the shorter47.80864m rise within those force and rope-weight bounds."
  },
  "sources": [
    {
      "url": "https://www.nature.com/articles/s40494-025-02018-w",
      "supports": "Starting construction proposal"
    },
    {
      "url": "https://dergipark.org.tr/tr/download/article-file/180977",
      "supports": "Bal,Bektas,Kaymakci2012 juvenile cedar: density574kg/m\u00b3, bending75.8MPa, shear5.2MPa. Both strengths divided by3 for this screen.",
      "verified_this_turn": "Primary PDF abstract, page1"
    },
    {
      "url": "https://dergipark.org.tr/tr/download/article-file/2485637",
      "supports": "Modern cedar transverse compression7.6MPa; selected bearing allowance /3"
    },
    {
      "url": "https://www.nature.com/articles/s41598-023-29092-z.pdf",
      "supports": "Modern Aswan granite tension4MPa, selected allowance /3"
    },
    {
      "url": "https://www.anticacorderiacorai.com/en/product/hempstyle/",
      "supports": "Modern indicative flax rope mass and strength proxy"
    },
    {
      "local": "friction-assumptions.json",
      "supports": "Running and starting-friction sensitivity provenance"
    },
    {
      "local": "heavy-placement-case.json",
      "supports": "Survey reference and selected architecture/route envelopes"
    },
    {
      "url": "https://nauticalarch.org/projects/khufu-boat-project-documents-and-drawings/",
      "supports": "Period material/craft reference for timber and lashing reconstruction. This does not document the proposed lifting or sledge design."
    },
    {
      "url": "https://nauticalarch.org/projects/khufu-boat-project-documents-and-drawings/",
      "supports": "Period material/craft reference for timber and lashing reconstruction. This does not document the proposed lifting or sledge design."
    }
  ],
  "open": [
    "Finite collar/yoke and many-rope fanout, bends, spacing, load equalization and stone contact",
    "Rope sag, long joints, wear and matched friction",
    "Fixed-head lateral anchors, support stability and foundation/settlement",
    "Controlled holds, tipping start/stop, load handoffs and hand grips",
    "Timber-sledge bracing joints, runners, unevenness and coupled two-sledge motion",
    "Complete growing masonry, other ceiling beams, access and rope corridors",
    "Build all supplied structures, deliver ropes/crew/material and recover equipment",
    "Continue quarry-to-completion construction of the full pyramid"
  ],
  "qualified_heavy_placement": false,
  "whole_pyramid_complete": false,
  "source_hashes": {
    "src/heavy-placement.js": "e03f31240476b275c08fad7d4354a5dbd63f599e4d36a31da46c83ee1e88dbda",
    "src/heavy-cycle.js": "95733b28f87142bcb2ba9edac95cce74bae8b8235716db173e73ca1d94b9d9d4",
    "research/cedar-juvenile-2012.pdf": "0be2123e0607f0297ac850173d660d222e6fb8008ee6acc5aaf9377ddf0e0fa2",
    "research/cedar-orthotropic-2022.pdf": "d43bc8419d6c165f3b296fa95620b2368652e40af8a6b225828948313366a930",
    "research/aswan-granite-2023.pdf": "a210838cdc78832e071d92c54c301127098715c2be1cdc0e742dd6837d9b4a93",
    "friction-assumptions.json": "a438e724cbb5a07d8db978e34364dae0b7313c2febb548b5a2de7f4addeabb0c",
    "heavy-placement-case.json": "040a702f3aaa8928385f4cd511cce62f8a3f3568df10ba1d5fc5fec601524047",
    "research/corai-hempstyle-flax-2026.html": "1aacd6c5c0a2c44d3ddab2a84b51e3c5c852e48387af1842a425cdca098cd285",
    "src/heavy-working-sequence.js": "f2ca8f85bfd18a0410f6296b5776e489d727242c2f2b09408ec56010a151a7f2",
    "heavy-working-sequence.html": "546047ba051db745f8efa72470770d9a24bf8f80b616780430f6dab8bbe1e5e9",
    "qa/check_heavy_placement_animation.cjs": "37bcd998d6ac4f776e9eb40db0503137e58c93c1833e45f38c5291131c6e90d2",
    "qa/check_heavy_receiving_geometry.py": "aa6edf6abfa4b318c85efb3d559f8b6e1565fef1c3520cab7677a1bf41445463"
  },
  "screen_results": "qa/heavy-placement-animation-audit.json",
  "geometry_results": "qa/heavy-receiving-geometry-audit.json",
  "browser_results": "qa/heavy-working-sequence-browser.json",
  "current_screen_summary": {
    "mode": "side",
    "addedDurationS": 34486.86633333308,
    "groundWorkers": 48384,
    "groundCrewBlockM": [
      86.39999999999999,
      235.2
    ],
    "maxPersonN": 137.4062048443232,
    "maxFactoredRopeN": 24304.409512863887,
    "ropeAllowanceN": 25497.29,
    "maxGuideWrapRad": 8.492079522305652,
    "guideWrapBoundRad": 9.42477796076938,
    "maxRopeReserveN": 7170.699739526079,
    "ropeReserveN": 8500,
    "maxForceResidualN": 1.1641532182693481e-10,
    "maxMomentResidualNm": 7.203198038041592e-10,
    "maxAccelerationOverGravity": 1.22752756424878e-06,
    "maxBoundaryJumpM": 3.552713678800501e-14,
    "headLog": {
      "timberMassKg": 16157.336681118451,
      "riggingMassReserveKg": 25000,
      "contactPitchM": 0.11,
      "contactsPerSpan": 10,
      "spanM": 1,
      "netDiameterM": 0.7,
      "grossDiameterM": 0.8,
      "bendingPa": 3079120.6939811246,
      "bendingAllowancePa": 25266666.666666668,
      "shearPa": 718461.4952622624,
      "shearAllowancePa": 1733333.3333333333,
      "bearingPa": 987487.0929888393,
      "bearingAllowancePa": 2533333.3333333335
    },
    "transferCribSledges": {
      "heightM": 4.450000000000003,
      "postCompressionPa": 1528725,
      "compressionAllowancePa": 14700000,
      "eulerBucklingN": 1836860.346936739,
      "factoredPostLoadN": 137585.25,
      "topBendingPa": 8391081.60191796,
      "topShearPa": 1048885.200239745,
      "estimatedWoodAndBracingKg": 7696.376000000002,
      "reservedMassKg": 15000,
      "baseHaulOverturningMargin": 2.946127946127946,
      "bracingJointsAndRunnerContactVerified": false
    },
    "stoneBendingPa": 642442.1850001467,
    "stoneTensionAllowancePa": 1333333.3333333333,
    "proposedDestinationReached": true,
    "carrierRetained": true,
    "loadedHeadsFixed": true,
    "completePlacementVerified": false
  },
  "source_hashes_scope": "Snapshot of the heavy receiving study. Force-model hashes remain applicable; current viewer hashes are recorded in qa/animation-production-progress.json."
}