{ "schema_version": "3.0", "generator": "design_engine + ibg_generator v1.0.0", "generated": "2026-10-25T20:40:33+00:00", "module": "design_engine + ibg_generator", "phase": "CD", "project": { "name": "Architecture.Engineering \u2014 L courtyard study", "number": "AE-STUDY-L01", "address": "Fictional study: no real parcel", "site_area_sf": 39100, "site_dims": { "length": 230, "width": 170 }, "study_basis": { "status": "Fictional architectural study; no surveyed parcel or permit submission", "dimensions": "150 ft main wing, 125 ft return, both 56.4 ft deep; 230 by 170 ft hypothetical site", "unit_widths": "Studio 18\u201322 ft; one-bedroom 26\u201332 ft; target mix 50% each, actual count from packing", "structure": "Authored grid avoids circulation strips: transverse axes 0, 24, 32.4, 56.4 ft; return longitudinal axes 0, 20, 35, 60, 85, 110, 125 ft. 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90.15, "width": 21.0, "net_depth": 24.1167, "face": "South", "floor": 4, "grid_snapped": false, "sf": 506.0, "wing": "main" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 111.9, "width": 28.0, "net_depth": 24.1167, "face": "South", "floor": 4, "grid_snapped": false, "sf": 675.0, "wing": "main" }, { "unit_type": "ST", "type_name": "Studio", "x": 140.65, "width": 20.0, "net_depth": 24.1167, "face": "South", "floor": 4, "grid_snapped": false, "sf": 482.0, "wing": "main" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 161.4, "width": 28.0, "net_depth": 24.1167, "face": "South", "floor": 4, "grid_snapped": false, "sf": 675.0, "wing": "main" }, { "unit_type": "ST", "type_name": "Studio", "x": 57.4, "width": 22.0, "net_depth": 24.1167, "face": "North", "floor": 4, "grid_snapped": false, "sf": 531.0, "wing": "main" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 80.15, "width": 32.0, "net_depth": 24.1167, "face": "North", "floor": 4, "grid_snapped": false, "sf": 772.0, "wing": "main" }, { "unit_type": "ST", "type_name": "Studio", "x": 112.9, "width": 21.125, "net_depth": 24.1167, "face": "North", "floor": 4, "grid_snapped": false, "sf": 509.0, "wing": "main" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 134.775, "width": 28.0, "net_depth": 24.1167, "face": "North", "floor": 4, "grid_snapped": false, "sf": 675.0, "wing": "main" }, { "unit_type": "ST", "type_name": "Studio", "x": 163.525, "width": 20.0, "net_depth": 24.1167, "face": "North", "floor": 4, "grid_snapped": false, "sf": 482.0, "wing": "main" }, { "unit_type": "ST", "type_name": "Studio", "x": 1.0, "width": 20.82, "net_depth": 24.1167, "face": "West", "floor": 4, "grid_snapped": false, "sf": 502.0, "wing": "return" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 34.58, "width": 32.0, "net_depth": 24.1167, "face": "West", "floor": 4, "grid_snapped": false, "sf": 772.0, "wing": "return" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 67.33, "width": 32.0, "net_depth": 24.1167, "face": "West", "floor": 4, "grid_snapped": false, "sf": 772.0, "wing": "return" }, { "unit_type": "ST", "type_name": "Studio", "x": 56.4, "width": 22.0, "net_depth": 24.1167, "face": "East", "floor": 4, "grid_snapped": false, "sf": 531.0, "wing": "return" }, { "unit_type": "1BR", "type_name": "1-Bedroom", "x": 79.15, "width": 30.85, "net_depth": 24.1167, "face": "East", "floor": 4, "grid_snapped": false, "sf": 744.0, "wing": "return" } ] }, "infeasibility": [ { "id": "A", "label": "Reduce unit sizes to minimum", "change": "All units at min width", "new_target": 54, "revenue_delta": -19200, "pro": "Meets target count", "con": "Smaller units, lower rent/unit" }, { "id": "B", "label": "Accept reduced count", "change": "46 units instead of 54", "new_target": 46, "revenue_delta": -115200, "pro": "Better-sized units", "con": "8 fewer units" }, { "id": "C", "label": "Add a floor", "change": "+1 story (check zoning height limit)", "new_target": 54, "revenue_delta": -384800, "pro": "More units + revenue", "con": "Higher construction cost" }, { "id": "D", "label": "Switch to single-loaded corridor", "change": "Units one side only (premium units)", "new_target": 29, "revenue_delta": -345600, "pro": "Premium units, higher rent", "con": "~45% fewer units" }, { "id": "E", "label": "Adjust unit mix", "change": "Reduce 2BR/3BR, add studios", "new_target": 52, "revenue_delta": -14400, "pro": "Balanced approach", "con": "Unit mix shift from target" } ] }, "metrics": { "total_corridor_face_ft": 408.0, "total_core_sf": 1080.0, "core_pct": 1.7, "units_placed": 46, "units_target": 54, "units_pct": 85.0, "utilization_pct": 98.0 }, "validation": { "total": 24, "pass": 20, "warn": 4, "crit": 0, "gate": "PASS", "checks": [ { "check_id": "LOAD-01", "name": "Per-Story Occupant Load", "category": "Code", "severity": "PASS", "value": "OL = 78/story (15,510 SF / 200 SF per occupant)", "detail": "IBC 1004.5 -- R-2 (gross method). Building has 4 stories. Cumulative OL on lowest egress stair would be ~312; per-story OL drives corridor and door width (IBC 1005.3.2)." }, { "check_id": "CODE-HA", "name": "Height & Area", "category": "Code", "severity": "PASS", "value": "4 stories OK (max 4); 15,510 SF/story OK (max 36,000)", "detail": "IBC 504.3 / 504.4 / 506.2 -- R-2 Type VA (sprinklered). Notes: 506.3 frontage increase not claimed: If 0, Equation 5-1 lists S1, which the Table 506.2 legend limits to one story; a storey of a taller NFPA 13 building reads SM." }, { "check_id": "CORR-01", "name": "Corridor Width", "category": "Spatial", "severity": "PASS", "value": "5.50' clear (need >= 3.67' = R-2 minimum 44\")", "detail": "IBC 1020.2 / 1005.3.2 -- per-story OL 78 (R-2). Required = max(occ_min 44\", OL x 0.2\"/occ = 15.6\")." }, { "check_id": "DQL-LIGHT", "name": "Daylight Reach", "category": "Design Quality", "severity": "PASS", "value": "24.1' worst (<=25.0')", "detail": "AIA / ASHRAE 90.1 daylight zones: practical reach 25.0', refusal 30.0'. Worst unit: ST@57' L2 (main)." }, { "check_id": "CORR-02", "name": "Core Corridor Clearance", "category": "Spatial", "severity": "PASS", "value": "All 2 cores split-clear of corridor", "detail": "Corridor band must be unobstructed; E-W cores use south/north split, N-S cores use west/east split" }, { "check_id": "CORR-03", "name": "Junction Clear Zone", "category": "Spatial", "severity": "PASS", "value": "All 2-wing junctions clear", "detail": "IBC 1005.1: corridor turns require unobstructed clear zone" }, { "check_id": "GRID-01", "name": "Building Centered", "category": "Grid", "severity": "PASS", "value": "Margin delta 0.00'", "detail": "Equal setbacks on all sides" }, { "check_id": "GRID-02", "name": "Demising on Grid", "category": "Grid", "severity": "PASS", "value": "31 demising edges: 0 on a bay line, 31 more than 0.5 ft from one (nearest 3.4 ft)", "detail": "design_engine/packing.py pass 4: an edge within 0.5 ft of a bay line snaps to it" }, { "check_id": "COL-01", "name": "Unit Overlap", "category": "Collision", "severity": "PASS", "value": "None detected", "detail": "Pairwise check on 16 units" }, { "check_id": "EGR-01", "name": "Travel Distance", "category": "Egress", "severity": "PASS", "value": "160' worst (limit 250')", "detail": "IBC 1017.1 (R-2, sprinklered): checked 43 units; worst at ST@57' L2 (main)" }, { "check_id": "EGR-02", "name": "Dead End", "category": "Egress", "severity": "PASS", "value": "No dead-end nodes (all corridor tips have cores or junctions)", "detail": "IBC 1020.4 (R-2, sprinklered): limit 50'." }, { "check_id": "EGR-03", "name": "Common Path of Egress", "category": "Egress", "severity": "WARNING", "value": "corridor part 3' worst (limit 125')", "detail": "IBC 1006.2.1, Table 1006.2.1 (R-2): 43 unit door(s) traced to the divergence point; worst at ST@57' L2. The part inside each unit is measured by the code ledger on the element file." }, { "check_id": "EGR-04", "name": "Exit Separation", "category": "Egress", "severity": "PASS", "value": "189' between node-main-end and node-return-end (req 80' = 1/3-diagonal (sprinklered))", "detail": "IBC 1007.1.1 -- building diagonal 241' / 3 = 80' required" }, { "check_id": "DIM-01", "name": "Width Bounds", "category": "Dimensional", "severity": "PASS", "value": "All within range", "detail": "Unit type library min/max constraints" }, { "check_id": "ENV-01", "name": "Unit Envelope", "category": "Spatial", "severity": "PASS", "value": "All contained", "detail": "Envelope: main[56,0->206,56] | return[0,0->56,125]" }, { "check_id": "PRG-01", "name": "Unit Count", "category": "Program", "severity": "WARNING", "value": "46/54 (85.0%)", "detail": "Short by 8" }, { "check_id": "PRG-02", "name": "Unit Mix Fidelity", "category": "Program", "severity": "PASS", "value": "max deviation 0pp (tol 10pp)", "detail": "Achieved unit mix must stay within tolerance of the target mix" }, { "check_id": "DQL-01", "name": "Core at Terminus", "category": "Design Quality", "severity": "WARNING", "value": "2 core(s) at terminus: core-A, core-B", "detail": "Core at terminus blocks corridor glazing opportunity" }, { "check_id": "IBC-406", "name": "Min Unit Area", "category": "Code", "severity": "PASS", "value": "All units >=150 SF", "detail": "IBC 1208.4 -- habitable rooms min 150 SF" }, { "check_id": "CORR-04", "name": "Unit-Junction Overlap", "category": "Spatial", "severity": "PASS", "value": "No unit-junction overlaps", "detail": "Units must not occupy junction reserved zones" }, { "check_id": "XFORM-01", "name": "Wing Transform", "category": "Spatial", "severity": "PASS", "value": "All wing transforms valid", "detail": "Non-negative origins and no significant wing AABB overlaps" }, { "check_id": "ADA-01", "name": "Elevator Count", "category": "IBC 3002", "severity": "PASS", "value": "1 (1 req)", "detail": "46u / 4s" }, { "check_id": "STR-02", "name": "Demising Grid Snap", "category": "Structural", "severity": "WARNING", "value": "0% (0/12)", "detail": "Target >=60% on 25.0' grid" }, { "check_id": "BAL-01", "name": "Row Balance", "category": "Layout", "severity": "PASS", "value": "Delta 0 units", "detail": "South:5 | North:5 | West:4 | East:2" } ] }, "life_safety": { "occupancy_group": "R-2", "bucket": "residential", "gates_passed": true, "gates": [ { "id": "G-FS-EGRESS", "name": "Floor egress (travel, dead-end, capacity)", "status": "pass", "citation": "IBC 1017 / 1020.4 / 1007.1.1 / 1005.3 / 1006.3.4", "failures": [], "detail": "OL 78 -> >=2 exits @ >=88in total stair clear (sprinklered)" }, { "id": "G-FS-CORRIDOR", "name": "Floor corridor width", "status": "pass", "citation": "IBC 1020.2 / 1005.3.2", "failures": [], "detail": "5.50' clear (need >= 3.67' = R-2 minimum 44\")" } ] }, "wall_types_used": { "EW-1": { "thick_in": 10.0, "fire": "", "stc": 0.0, "structural": true, "desc": "Study fiber-cement panel rainscreen", "name": "Study fiber-cement panel rainscreen", "description": "Study fiber-cement panel rainscreen", "thickness_in": 10.0, "fire_rating": "", "rating": "", "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, "CW-1": { "thick_in": 6, "fire": "1-HR", "stc": 50, "structural": false, "desc": "Corridor wall (2x4 + 2 layers GWB)", "name": "Corridor wall (2x4 + 2 layers GWB)", "description": "Corridor wall (2x4 + 2 layers GWB)", "thickness_in": 6, "fire_rating": "1-HR", "rating": "1-HR", "basis": "design_engine.constants.WALL_TYPES" }, "DW-1": { "thick_in": 9, "fire": "1-HR", "stc": 55, "structural": false, "desc": "Demising wall (2x4 staggered + batt + 2xGWB)", "name": "Demising wall (2x4 staggered + batt + 2xGWB)", "description": "Demising wall (2x4 staggered + batt + 2xGWB)", "thickness_in": 9, "fire_rating": "1-HR", "rating": "1-HR", "basis": "design_engine.constants.WALL_TYPES" }, "PW-1": { "thick_in": 4.5, "fire": "0-HR", "stc": 33, "structural": false, "desc": "Interior partition (2x4 + GWB)", "name": "Interior partition (2x4 + GWB)", "description": "Interior partition (2x4 + GWB)", "thickness_in": 4.5, "fire_rating": "0-HR", "rating": "0-HR", "basis": "design_engine.constants.WALL_TYPES" }, "SF-1": { "thick_in": 8, "fire": "2-HR", "stc": 55, "structural": true, "desc": "Shaft wall (elevator/stair)", "name": "Shaft wall (elevator/stair)", "description": "Shaft wall (elevator/stair)", "thickness_in": 8, "fire_rating": "2-HR", "rating": "2-HR", "basis": "design_engine.constants.WALL_TYPES" } }, "resume_instructions": { "next_module": "structural_engine \u2192 mep_engine", "required": [ "structural enrichment", "MEP enrichment" ], "optional": [ "landscape", "interior_finishes" ] }, "collision_report": { "total": 0, "critical": 0, "warning": 0, "pass": 0, "gate": "OPEN", "findings": [] }, "units_by_floor": { "L2": [ { "unit_id": "L2-S01", "x_ft": 1.0, "y_ft": 0.8333, "width_ft": 22.0, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 531.0, "bedrooms": 0, "bathrooms": 1, "ada": true, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-S02", "x_ft": 23.75, "y_ft": 0.8333, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": true, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-S03", "x_ft": 56.5, "y_ft": 0.8333, "width_ft": 22.0, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 531.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-S04", "x_ft": 79.25, "y_ft": 0.8333, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-S05", "x_ft": 112.0, "y_ft": 0.8333, "width_ft": 21.0, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 506.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-N06", "x_ft": 1.0, "y_ft": 31.45, "width_ft": 28.0, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 675.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-N07", "x_ft": 29.75, "y_ft": 31.45, "width_ft": 20.0, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 482.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-N08", "x_ft": 50.5, "y_ft": 31.45, "width_ft": 28.0, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 675.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-N09", "x_ft": 79.25, "y_ft": 31.45, "width_ft": 20.0, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 482.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-N10", "x_ft": 100.0, "y_ft": 31.45, "width_ft": 27.125, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 654.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L2-W11", "x_ft": 1.0, "y_ft": 0.8333, "width_ft": 20.82, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 502.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L2-W12", "x_ft": 34.58, "y_ft": 0.8333, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L2-W13", "x_ft": 67.33, "y_ft": 0.8333, "width_ft": 21.92, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 529.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L2-W14", "x_ft": 90.0, "y_ft": 0.8333, "width_ft": 20.0, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 482.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L2-E15", "x_ft": 56.4, "y_ft": 31.45, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L2-E16", "x_ft": 89.15, "y_ft": 31.45, "width_ft": 20.85, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 503.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false } ], "L3": [ { "unit_id": "L3-S01", "x_ft": 1.0, "y_ft": 0.8333, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-S02", "x_ft": 33.75, "y_ft": 0.8333, "width_ft": 21.0, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 506.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-S03", "x_ft": 55.5, "y_ft": 0.8333, "width_ft": 28.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 675.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-S04", "x_ft": 84.25, "y_ft": 0.8333, "width_ft": 20.0, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 482.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-S05", "x_ft": 105.0, "y_ft": 0.8333, "width_ft": 28.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 675.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-N06", "x_ft": 1.0, "y_ft": 31.45, "width_ft": 22.0, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 531.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-N07", "x_ft": 23.75, "y_ft": 31.45, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-N08", "x_ft": 56.5, "y_ft": 31.45, "width_ft": 21.125, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 509.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-N09", "x_ft": 78.375, "y_ft": 31.45, "width_ft": 28.0, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 675.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-N10", "x_ft": 107.125, "y_ft": 31.45, "width_ft": 20.0, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 482.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "main", "grid_snapped": false }, { "unit_id": "L3-W11", "x_ft": 1.0, "y_ft": 0.8333, "width_ft": 20.82, "net_depth_ft": 24.1167, "side": "South", "type": "ST", "type_name": "Studio", "net_sf": 502.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L3-W12", "x_ft": 34.58, "y_ft": 0.8333, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L3-W13", "x_ft": 67.33, "y_ft": 0.8333, "width_ft": 32.0, "net_depth_ft": 24.1167, "side": "South", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 772.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L3-E14", "x_ft": 56.4, "y_ft": 31.45, "width_ft": 22.0, "net_depth_ft": 24.1167, "side": "North", "type": "ST", "type_name": "Studio", "net_sf": 531.0, "bedrooms": 0, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false }, { "unit_id": "L3-E15", "x_ft": 79.15, "y_ft": 31.45, "width_ft": 30.85, "net_depth_ft": 24.1167, "side": "North", "type": "1BR", "type_name": "1-Bedroom", "net_sf": 744.0, "bedrooms": 1, "bathrooms": 1, "ada": false, "wing": "return", "grid_snapped": false } ], "L4": [ { "unit_id": "L4-S01", 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24.95 ], [ 31.45, 24.95 ] ], "ceiling_height_ft": 8.0, "walls": [ { "id": "C01-corridor", "name": "Resident lounge corridor boundary", "type_mark": "CW-1", "fire_rating": "1-HR", "start": [ 31.2, 25.2 ], "end": [ 55.983333, 25.2 ] } ], "daylight_basis": "Authored south-facing window; glazing performance unselected", "door": { "wall": "C01-corridor", "hinge": [ 42.0, 25.2 ], "latch": [ 45.0, 25.2 ], "width_ft": 3.0, "height_ft": 7.0, "swing_normal": [ 0, -1 ] }, "windows": [ { "point": [ 43.5, 0.416667 ], "face": "south", "width_ft": 8.0, "sill_ft": 1.5, "head_ft": 7.5 } ] }, { "id": "C02", "name": "Resident workroom", "wing": "return", "basis": "Project-authored fictional study: common rooms at the two-wing junction", "outline": [ [ 31.45, 31.45 ], [ 55.608333, 31.45 ], [ 55.608333, 55.65 ], [ 31.45, 55.65 ] ], "ceiling_height_ft": 8.0, "walls": [ { "id": "C02-corridor", "name": "Resident workroom corridor boundary", "type_mark": "CW-1", "fire_rating": "1-HR", "start": [ 31.2, 31.2 ], "end": [ 55.983333, 31.2 ] }, { "id": "C02-north", "name": "Workroom and apartment separation", "type_mark": "DW-1", "fire_rating": "1-HR", "start": [ 31.2, 56.025 ], "end": [ 55.983333, 56.025 ] } ], "daylight_basis": "Internal shared workroom; borrowed light is study intent, not code acceptance", "door": { "wall": "C02-corridor", "hinge": [ 42.0, 31.2 ], "latch": [ 45.0, 31.2 ], "width_ft": 3.0, "height_ft": 7.0, "swing_normal": [ 0, 1 ] } }, { "id": "C03", "name": "Resident reading room", "wing": "return", "basis": "Project-authored fictional study: common room and circulation allocation", "outline": [ [ 0.833333, 22.57 ], [ 24.95, 22.57 ], [ 24.95, 33.83 ], [ 0.833333, 33.83 ] ], "unit_type": "COMMON", "ceiling_height_ft": 8.0, "walls": [ { "id": "C03-north", "name": "Shared room boundary", "type_mark": "DW-1", "fire_rating": "1-HR", "start": [ 0.416667, 34.205 ], "end": [ 25.2, 34.205 ] } ], "door": { "wall": null, "hinge": [ 25.2, 26.7 ], "latch": [ 25.2, 29.7 ], "width_ft": 3.0, "height_ft": 7.0, "swing_normal": [ -1, 0 ] }, "daylight_basis": "Authored west-facing window; glazing performance unselected", "windows": [ { "point": [ 0.416667, 28.2 ], "face": "west", "width_ft": 6.0, "sill_ft": 1.5, "head_ft": 7.5 } ] }, { "id": "C04", "name": "Resident storage", "wing": "return", "basis": "Project-authored fictional study: common room and circulation allocation", "outline": [ [ 0.833333, 100.08 ], [ 24.95, 100.08 ], [ 24.95, 111.0 ], [ 0.833333, 111.0 ] ], "unit_type": "COMMON", "ceiling_height_ft": 8.0, "walls": [ { "id": "C04-south", "name": "Shared room boundary", "type_mark": "DW-1", "fire_rating": "1-HR", "start": [ 0.416667, 99.705 ], "end": [ 25.2, 99.705 ] } ], "door": { "wall": null, "hinge": [ 25.2, 104.03999999999999 ], "latch": [ 25.2, 107.03999999999999 ], "width_ft": 3.0, "height_ft": 7.0, "swing_normal": [ -1, 0 ] }, "daylight_basis": "No daylight claim; room use and ventilation require professional review" }, { "id": "C05", "name": "Shared laundry room", "wing": "return", "basis": "Project-authored fictional study: common room and circulation allocation", "outline": [ [ 31.45, 110.75 ], [ 55.566667, 110.75 ], [ 55.566667, 124.166667 ], [ 31.45, 124.166667 ] ], "unit_type": "COMMON", "ceiling_height_ft": 8.0, "walls": [ { "id": "C05-south", "name": "Shared room boundary", "type_mark": "DW-1", "fire_rating": "1-HR", "start": [ 31.2, 110.375 ], "end": [ 55.983333, 110.375 ] } ], "door": { "wall": null, "hinge": [ 31.2, 115.95833350000001 ], "latch": [ 31.2, 118.95833350000001 ], "width_ft": 3.0, "height_ft": 7.0, "swing_normal": [ 1, 0 ] }, "daylight_basis": "Two authored north-facing laundry windows; product, glazing performance and opening protection remain unselected", "windows": [ { "point": [ 37.5, 124.583333 ], "face": "north", "width_ft": 8.0, "sill_ft": 1.5, "head_ft": 7.5 }, { "point": [ 49.5, 124.583333 ], "face": "north", "width_ft": 8.0, "sill_ft": 1.5, "head_ft": 7.5 } ] }, { "id": "C06", "name": "Common services hall", "wing": "main", "basis": "Project-authored fictional study: common room and circulation allocation", "outline": [ [ 184.15, 31.45 ], [ 190.4, 31.45 ], [ 190.4, 55.566667 ], [ 184.15, 55.566667 ] ], "unit_type": "spine", "ceiling_height_ft": 8.0, "walls": [ { "id": "C06-west", "name": "Shared room boundary", "type_mark": "CW-1", "fire_rating": "1-HR", "start": [ 183.9, 31.2 ], "end": [ 183.9, 55.983333 ] } ], "door": null, "daylight_basis": "No daylight claim; room use and ventilation require professional review" }, { "id": "C07", "name": "Building services room", "wing": "main", "basis": "Project-authored fictional study: common room and circulation allocation", "outline": [ [ 191.066667, 39.95 ], [ 205.566667, 39.95 ], [ 205.566667, 55.566667 ], [ 191.066667, 55.566667 ] ], "unit_type": "COMMON", "ceiling_height_ft": 8.0, "walls": [ { "id": "C07-west", "name": "Shared room boundary", "type_mark": "SF-1", "fire_rating": "2-HR", "start": [ 190.733333, 39.616667 ], "end": [ 190.733333, 55.983333 ] } ], "door": { "wall": "C07-west", "hinge": [ 190.733333, 46.675 ], "latch": [ 190.733333, 49.675 ], "width_ft": 3.0, "height_ft": 7.0, "swing_normal": [ 1, 0 ] }, "daylight_basis": "No daylight claim; room use and ventilation require professional review" } ] }, "presentation": { "entry_comparison_canopy_width_ft": 32.0 }, "assemblies": { "assemblies_version": "1.0", "material_source": { "source_id": "assembly-materials", "version": "v1", "revision_date": "2026-10-16", "sha256": "54f32ae06b00092bdbb7d3cbe266ecfef305453ffeff32601487c5c209a30aff", "trust_class": "needs_review" }, "wall_type_map": { "EW-1": "AE1", "CW-1": "C1", "DW-1": "B1", "DW-2": "C1", "SW-1": "S1", "PW-1": "A3", "WW-1": "A4", "SF-1": "G2" }, "items": [ { "id": "E1", "name": "Exterior wall, non-rated, 2x4", "kind": "wall", "function": "Exterior", "rating_hr": 0, "thickness_in": 5.219, "layers": [ { "function": "finish", "material_id": "siding-wood-bevel", "material": "wood bevel lap siding", "thickness_in": 0.75, "r_value": 0.8, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "membrane", "material_id": "wrb", "material": "weather-resistive barrier, two layers", "thickness_in": 0.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": false }, { "function": "substrate", "material_id": "plywood-sheathing-1-2", "material": "15/32 in (nominal 1/2 in) wood structural panel sheathing", "thickness_in": 0.469, "r_value": 0.63, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x4-16", "material": "2x4 wood studs at 16 in o.c.", "thickness_in": 3.5, "r_value": 4.375, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "batt-r13", "material": "R-13 fiberglass batt", "r_value": 13.0, "r_source": "coloradoenergy-r-values" } }, { "function": "finish", "material_id": "gwb-1-2", "material": "1/2 in gypsum board", "thickness_in": 0.5, "r_value": 0.45, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 3, "to": 3 }, "listing": null, "acoustic": null, "u_factor": { "value": 0.0636, "r_total": 15.73, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [] }, "reviewer_action": "verify-locally" }, { "id": "E2", "name": "Exterior wall, 1-hr, 2x6", "kind": "wall", "function": "Exterior", "rating_hr": 1, "thickness_in": 7.344, "layers": [ { "function": "finish", "material_id": "siding-wood-bevel", "material": "wood bevel lap siding", "thickness_in": 0.75, "r_value": 0.8, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "membrane", "material_id": "wrb", "material": "weather-resistive barrier, two layers", "thickness_in": 0.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": false }, { "function": "substrate", "material_id": "plywood-sheathing-1-2", "material": "15/32 in (nominal 1/2 in) wood structural panel sheathing", "thickness_in": 0.469, "r_value": 0.63, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x6-16", "material": "2x6 wood studs at 16 in o.c.", "thickness_in": 5.5, "r_value": 6.875, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "batt-r21", "material": "R-21 high-density fiberglass batt", "r_value": 21.0, "r_source": "coloradoenergy-r-values" } }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 3, "to": 3 }, "listing": { "kind": "calculated", "design_no": null, "rating_hr": 1, "source": "IBC 2021 Section 722.6.2, Tables 722.6.2(1) and 722.6.2(2); component minutes as carried in sheet_engine/renderers/construction_assemblies.py (A2 literal)", "source_url": null, "trust_class": "unverified", "note": "A calculated method under Section 722.6.2; no agency listing applies. The reviewer runs the table sum." }, "acoustic": null, "u_factor": { "value": 0.0419, "r_total": 23.84, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [] }, "reviewer_action": "verify-locally" }, { "id": "A3", "name": "Interior partition, 2x4", "kind": "wall", "function": "Interior", "rating_hr": 0, "thickness_in": 4.5, "layers": [ { "function": "finish", "material_id": "gwb-1-2", "material": "1/2 in gypsum board", "thickness_in": 0.5, "r_value": 0.45, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x4-16", "material": "2x4 wood studs at 16 in o.c.", "thickness_in": 3.5, "r_value": 4.375, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "cavity-empty", "material": "empty stud cavity", "r_value": null, "r_source": null } }, { "function": "finish", "material_id": "gwb-1-2", "material": "1/2 in gypsum board", "thickness_in": 0.5, "r_value": 0.45, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 1, "to": 1 }, "listing": null, "acoustic": null, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "empty stud cavity" ] }, "reviewer_action": "verify-locally" }, { "id": "A4", "name": "Interior wet wall, 2x6", "kind": "wall", "function": "Interior", "rating_hr": 0, "thickness_in": 6.75, "layers": [ { "function": "finish", "material_id": "gwb-5-8-x-mr", "material": "5/8 in Type X moisture-resistant gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x6-16", "material": "2x6 wood studs at 16 in o.c.", "thickness_in": 5.5, "r_value": 6.875, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "cavity-empty", "material": "empty stud cavity", "r_value": null, "r_source": null } }, { "function": "finish", "material_id": "gwb-5-8-x-mr", "material": "5/8 in Type X moisture-resistant gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 1, "to": 1 }, "listing": null, "acoustic": null, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "empty stud cavity" ] }, "reviewer_action": "verify-locally" }, { "id": "B1", "name": "Acoustic partition, 1-hr, 2x4 with resilient channel", "kind": "wall", "function": "Interior", "rating_hr": 1, "thickness_in": 5.25, "layers": [ { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "substrate", "material_id": "resilient-channel", "material": "resilient channel, 25 MSG, one side", "thickness_in": 0.5, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": false }, { "function": "structure", "material_id": "stud-2x4-24", "material": "2x4 wood studs at 24 in o.c.", "thickness_in": 3.5, "r_value": 4.375, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "mineral-wool-3", "material": "3 in mineral wool batt", "r_value": 9.42, "r_source": "coloradoenergy-r-values" } }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 2, "to": 2 }, "listing": { "kind": "UL", "design_no": "U309", "rating_hr": 1, "source": "sheet_engine/renderers/construction_assemblies.py (A1 and B1 literals)", "source_url": null, "trust_class": "unverified", "note": "Carried from the G-040 sheet literal; not checked against UL Product iQ." }, "acoustic": { "stc": 50, "iic": null, "report": null, "source": "sheet_engine/renderers/construction_assemblies.py (B1 literal, 50 to 54 STC)", "trust_class": "unverified" }, "u_factor": { "value": 0.084, "r_total": 11.9, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [] }, "reviewer_action": "verify-locally" }, { "id": "C1", "name": "Corridor partition, 1-hr, 2x4", "kind": "wall", "function": "Interior", "rating_hr": 1, "thickness_in": 4.75, "layers": [ { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x4-16", "material": "2x4 wood studs at 16 in o.c.", "thickness_in": 3.5, "r_value": 4.375, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "cavity-empty", "material": "empty stud cavity", "r_value": null, "r_source": null } }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 1, "to": 1 }, "listing": { "kind": "UL", "design_no": "U305", "rating_hr": 1, "source": "UL Design No. U305, public copy of the design sheet", "source_url": "https://gaco.com/wp-content/uploads/2020/12/Underwriters-Laboratories-UL-Wall-Design-Number-U305.pdf", "trust_class": "needs_review", "note": "Read 2026-10-16. Confirm against UL Product iQ before issue." }, "acoustic": { "stc": 32, "iic": null, "report": null, "source": "USG assembly page for UL U305, uninsulated variant", "trust_class": "needs_review" }, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "empty stud cavity" ] }, "reviewer_action": "verify-locally" }, { "id": "F1", "name": "Stair and shaft enclosure, 2-hr, 2x6", "kind": "wall", "function": "Interior", "rating_hr": 2, "thickness_in": 8.0, "layers": [ { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x6-16", "material": "2x6 wood studs at 16 in o.c.", "thickness_in": 5.5, "r_value": 6.875, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "batt-5-1-2-unrated", "material": "5-1/2 in glass fiber batt, R not stated by the listing", "r_value": null, "r_source": null } }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 2, "to": 2 }, "listing": { "kind": "UL", "design_no": "U301", "rating_hr": 2, "source": "USG assembly page for UL Design No. U301", "source_url": "https://www.usg.com/content/usgcom/en/design-studio/wall-assemblies/assembly-detail.30270.html", "trust_class": "needs_review", "note": "Read 2026-10-16. Confirm against UL Product iQ before issue." }, "acoustic": { "stc": 42, "iic": null, "report": null, "source": "USG assembly page for UL U301", "trust_class": "needs_review" }, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "5-1/2 in glass fiber batt, R not stated by the listing" ] }, "reviewer_action": "verify-locally" }, { "id": "G2", "name": "Shaft wall, 2-hr, C-H studs", "kind": "wall", "function": "Interior", "rating_hr": 2, "thickness_in": 6.25, "layers": [ { "function": "finish", "material_id": "gypsum-liner-1", "material": "1 in gypsum shaft liner panel", "thickness_in": 1.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "ch-stud-4-25ga", "material": "4 in C-H steel studs, 25 ga, at 24 in o.c.", "thickness_in": 4.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "cavity-empty", "material": "empty stud cavity", "r_value": null, "r_source": null } }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 1, "to": 1 }, "listing": { "kind": "UL", "design_no": "U415", "rating_hr": 2, "source": "USG shaft wall assembly pages for UL Design No. U415", "source_url": "https://www.usg.com/content/usgcom/en/design-studio/wall-assemblies/assembly-detail.30188.html", "trust_class": "needs_review", "note": "Read 2026-10-16. Confirm against UL Product iQ before issue." }, "acoustic": null, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "1 in gypsum shaft liner panel", "empty stud cavity" ] }, "reviewer_action": "verify-locally" }, { "id": "S1", "name": "Shear wall, 2-hr, 2x6 with wood structural panel", "kind": "wall", "function": "Interior", "rating_hr": 2, "thickness_in": 8.469, "layers": [ { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "substrate", "material_id": "plywood-sheathing-1-2", "material": "15/32 in (nominal 1/2 in) wood structural panel sheathing", "thickness_in": 0.469, "r_value": 0.63, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "stud-2x6-16", "material": "2x6 wood studs at 16 in o.c.", "thickness_in": 5.5, "r_value": 6.875, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "cavity-empty", "material": "empty stud cavity", "r_value": null, "r_source": null } }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 3, "to": 3 }, "listing": { "kind": "UL", "design_no": "U301", "rating_hr": 2, "source": "USG assembly page for UL Design No. U301", "source_url": "https://www.usg.com/content/usgcom/en/design-studio/wall-assemblies/assembly-detail.30270.html", "trust_class": "needs_review", "note": "Read 2026-10-16. Confirm against UL Product iQ before issue." }, "acoustic": null, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "empty stud cavity" ] }, "reviewer_action": "verify-locally", "note": "U301 as the base design. Whether the listing permits the wood structural panel on one face is the reviewer's question; the structural set governs the panel." }, { "id": "FC1", "name": "Floor-ceiling, 1-hr, wood floor trusses", "kind": "floor", "function": "Interior", "rating_hr": 1, "thickness_in": 18.344, "layers": [ { "function": "finish", "material_id": "gypcrete-3-4", "material": "3/4 in gypsum concrete topping", "thickness_in": 0.75, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "substrate", "material_id": "subfloor-15-32", "material": "15/32 in wood structural panel subfloor", "thickness_in": 0.469, "r_value": 0.63, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true }, { "function": "structure", "material_id": "floor-truss-16-24", "material": "16 in wood floor trusses at 24 in o.c.", "thickness_in": 16.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "fill": { "material_id": "batt-r11", "material": "R-11 fiberglass batt", "r_value": 11.0, "r_source": "coloradoenergy-r-values" } }, { "function": "substrate", "material_id": "resilient-channel", "material": "resilient channel, 25 MSG, one side", "thickness_in": 0.5, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": false }, { "function": "finish", "material_id": "gwb-5-8-x", "material": "5/8 in Type X gypsum board", "thickness_in": 0.625, "r_value": 0.56, "r_source": "coloradoenergy-r-values", "density_pcf": null, "cost_basis": null, "thermal_path": true } ], "core": { "from": 2, "to": 2 }, "listing": { "kind": "UL", "design_no": "L569", "rating_hr": 1, "source": "sheet_engine/renderers/construction_assemblies.py (the F1 literal, retired in part V-21)", "source_url": null, "trust_class": "unverified", "note": "Carried from the G-041 sheet literal; the wood-joist variant was not found online." }, "acoustic": { "stc": 50, "iic": null, "report": null, "source": "sheet_engine/renderers/construction_assemblies.py (the F1 literal, retired in part V-21, 50 to 54 STC)", "trust_class": "unverified" }, "u_factor": { "value": null, "r_total": null, "method": "series path: 1 / (air films + sum of layer R on the thermal path), the cavity fill standing for the framed layer; no parallel-path framing correction", "missing": [ "3/4 in gypsum concrete topping" ] }, "reviewer_action": "verify-locally", "note": "The floor is the structural engine's trusses (STR-FT, S-601; part V-21). The listing and the STC came from the G-041 detail, which drew 2x10 joists; whether they hold for this truss floor is the reviewer's question." }, { "id": "AE1", "name": "Study fiber-cement panel rainscreen", "kind": "wall", "function": "Exterior", "rating_hr": 0.0, "rating_basis": "Not assessed", "thickness_in": 10.0, "layers": [ { "function": "finish", "material_id": "study-ew-0", "material": "Fiber-cement panel", "thickness_in": 0.5, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "function": "air", "material_id": "study-ew-1", "material": "Ventilated cavity", "thickness_in": 1.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "function": "thermal", "material_id": "study-ew-2", "material": "Continuous insulation", "thickness_in": 2.0, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "function": "substrate", "material_id": "study-ew-3", "material": "Sheathing", "thickness_in": 0.5, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "function": "structure", "material_id": "study-ew-4", "material": "Wood stud cavity", "thickness_in": 5.5, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "function": "finish", "material_id": "study-ew-5", "material": "Interior gypsum board", "thickness_in": 0.5, "r_value": null, "r_source": null, "density_pcf": null, "cost_basis": null, "thermal_path": true, "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." } ], "core": { "from": 4, "to": 4 }, "listing": null, "acoustic": null, "u_factor": { "value": null, "r_total": null, "method": "Not assessed for this authored study assembly", "missing": [ "Fiber-cement panel", "Ventilated cavity", "Continuous insulation", "Sheathing", "Wood stud cavity", "Interior gypsum board" ] }, "reviewer_action": "professional-judgment", "note": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." } ], "note": "Preliminary. Listings carry the trust class of where they were read; the U-factor is a series-path upper bound. Every record is at verify-locally.", "thickness_notes": [ { "mark": "CW-1", "assembly_id": "C1", "drawn_in": 6.0, "layers_in": 4.75, "note": "the plan draws this type at drawn_in; the assembly's layers sum to layers_in" }, { "mark": "DW-1", "assembly_id": "B1", "drawn_in": 9.0, "layers_in": 5.25, "note": "the plan draws this type at drawn_in; the assembly's layers sum to layers_in" }, { "mark": "DW-2", "assembly_id": "C1", "drawn_in": 6.0, "layers_in": 4.75, "note": "the plan draws this type at drawn_in; the assembly's layers sum to layers_in" }, { "mark": "SW-1", "assembly_id": "S1", "drawn_in": 12.0, "layers_in": 8.469, "note": "the plan draws this type at drawn_in; the assembly's layers sum to layers_in" }, { "mark": "WW-1", "assembly_id": "A4", "drawn_in": 6.0, "layers_in": 6.75, "note": "the plan draws this type at drawn_in; the assembly's layers sum to layers_in" }, { "mark": "SF-1", "assembly_id": "G2", "drawn_in": 8.0, "layers_in": 6.25, "note": "the plan draws this type at drawn_in; the assembly's layers sum to layers_in" } ], "authored_sources": { "AE1": { "source": "tools/public_example/study_envelope.py", "trust_class": "unverified", "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." } } }, "exterior_materials": [ { "name": "FIBER-CEMENT PANEL", "color": [ 180, 189, 181 ], "spec": "Study panel rainscreen; product and finish unselected", "application": "Opaque exterior walls", "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "name": "GLAZING", "color": [ 191, 209, 203 ], "spec": "Opening geometry only; glass and thermal properties unselected", "application": "Windows", "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." }, { "name": "CANOPY", "color": [ 189, 196, 191 ], "spec": "Study canopy volume; structure and finish unselected", "application": "Main entry", "basis": "Authored fictional design study; geometry for professional review, not a verified product or construction specification." } ], "architectural_design": { "basis": "Fictional public study authorized 27 October 2026; architectural dimensions are authored assumptions, not engineering certification.", "corner_points_ft": [ [ 0, 0 ], [ 206.4, 0 ], [ 206.4, 56.4 ], [ 56.4, 56.4 ], [ 56.4, 125 ], [ 0, 125 ] ], "finish_intent": "Warm timber-look battens over mineral panel rainscreen; dark bronze metal guards and trim. Product, fire classification and attachment unselected.", "roof_terrace": { "bounds_ft": [ 5, 78, 51.4, 119 ], "access_route_segments_ft": [ [ 46.4, 30, 51.4, 78 ], [ 46.4, 30, 203, 35 ], [ 198, 25.2, 203, 30 ] ], "planters_ft": [ [ 8, 112, 10, 2.5 ], [ 24, 112, 10, 2.5 ], [ 8, 84, 2.5, 10 ] ], "benches_ft": [ [ 9, 108, 9, 1.8 ], [ 25, 108, 9, 1.8 ], [ 15, 86, 1.8, 9 ] ], "use": "Shared resident roof garden and seating; no event venue or cooking provision.", "review": "Existing primary stair reaches roof. Accessible lift extension, independent exit strategy, occupant load, live loads, saturated planter loads, wind and guard anchorage remain unverified design obligations." } } }