{ "dataset_version": { "id": 3, "label": "v1.0 initial research build", "sha256": "39b09a298de0018be3f245e1a6765062fd7bd70f46ed2f97bf0e992b4d0a7666", "created_at": "2026-09-25 15:42:32" }, "material": { "id": "evergreen", "category": "Evergreen wood", "feedstock": "Norway spruce (Picea abies), planted even-aged stands", "product": "Cross-laminated timber (CLT)", "image": "evergreen.jpg", "declared_unit": "1 m3 of installed spruce CLT at 12% moisture content", "density_kg_m3": 435.6, "summary": "Solid panels of kiln-dried spruce lamellas glued crosswise. Composition follows a published CLT EPD; forestry, drying and transport are built bottom-up.", "params": [ { "id": "comp", "label": "Composition per m3", "value": "430 kg spruce, 5.63 kg PU adhesive, 0.207 kg PE film, 0.19 kg PP bands", "unit": "", "status": "S", "dq": 2, "sources": [ "S22" ], "note": "Setra EPD NEPD-3329-1967." }, { "id": "seed_ha", "label": "Seedlings planted per ha", "value": 2000, "unit": "1/ha", "status": "A", "dq": 4, "sources": [], "note": "Replace with regional planting density (ONF/CNPF guidance)." }, { "id": "vol_ha", "label": "Final felling volume per ha", "value": 400, "unit": "m3/ha", "status": "A", "dq": 4, "sources": [], "note": "Replace with yield-table value for the site class." }, { "id": "green", "label": "Green roundwood mass", "value": 0.85, "unit": "t/m3", "status": "A", "dq": 4, "sources": [], "note": "" }, { "id": "d_a2", "label": "Forest to sawmill distance", "value": 100, "unit": "km", "status": "A", "dq": 4, "sources": [], "note": "" }, { "id": "d_a4", "label": "Factory to site distance", "value": 100, "unit": "km", "status": "A", "dq": 4, "sources": [], "note": "" } ], "scale": [ { "basis": "DU", "value": 1, "label": "per declared unit" }, { "basis": "m3rw", "value": 1, "label": "m3 roundwood allocated per DU", "status": "D", "note": "Mass allocation with co-products." } ], "processes": [ { "id": "eve-01", "module": "A1", "stage": "Forest regeneration", "name": "Nursery seedling production, transport and planting", "description": "Containerised seedlings grown in a nursery, trucked to site and planted, incl. protection.", "flows": [ { "id": "f1", "flow": "Seedlings planted", "amount": 5, "unit": "seedling", "basis": "DU", "ef": "seedling", "status": "D", "dq": 4, "sources": [ "S21" ], "note": "= 2000 seedlings/ha / 400 m3/ha (both assumptions).", "kind": "input" } ] }, { "id": "eve-02", "module": "A1", "stage": "Forest regeneration", "name": "Soil scarification after clear-cut", "description": "Disc trenching or mounding 1-2 years after felling.", "flows": [ { "id": "f1", "flow": "Diesel, scarifier", "amount": null, "unit": "L", "basis": "DU", "ef": "diesel_nr", "status": "G", "dq": 5, "sources": [ "S51" ], "note": "Quantity not found in retrieved open sources.", "kind": "input" } ] }, { "id": "eve-03", "module": "A1", "stage": "Stand management", "name": "Pre-commercial thinning / cleaning", "description": "Motor-manual.", "flows": [ { "id": "f1", "flow": "Petrol, brushcutter", "amount": null, "unit": "L", "basis": "DU", "ef": null, "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-04", "module": "A1", "stage": "Stand management", "name": "Commercial thinnings", "description": "Fuel (2.2-3.1 L/m3) allocated to thinning wood.", "flows": [ { "id": "f1", "flow": "Diesel allocated to this product", "amount": 0, "unit": "L", "basis": "DU", "ef": "diesel_nr", "status": "D", "dq": 3, "sources": [ "S18" ], "note": "", "kind": "input" } ] }, { "id": "eve-05", "module": "A1", "stage": "Harvest", "name": "Felling, processing and forwarding (CTL)", "description": "Harvester + forwarder in final felling.", "flows": [ { "id": "f1", "flow": "Diesel, harvester + forwarder", "amount": 1.4, "unit": "L", "basis": "m3rw", "ef": "diesel_nr", "status": "S", "dq": 2, "sources": [ "S18", "S19" ], "note": "1.4 L/m3 (Nordic, measured); 1.7 L/m3 in a Romanian spruce clear-cut.", "kind": "input", "range": [ 1.4, 1.7 ] } ] }, { "id": "eve-06", "module": "A1", "stage": "Harvest", "name": "Chain lubrication", "description": "", "flows": [ { "id": "f1", "flow": "Chain oil", "amount": 0.035, "unit": "L", "basis": "m3rw", "ef": null, "status": "S", "dq": 3, "sources": [ "S20" ], "note": "EF not available.", "kind": "input" } ] }, { "id": "eve-07", "module": "A1", "stage": "Harvest", "name": "Hydraulic oil losses", "description": "", "flows": [ { "id": "f1", "flow": "Hydraulic oil to soil", "amount": 0.02, "unit": "L", "basis": "m3rw", "ef": null, "status": "S", "dq": 3, "sources": [ "S20" ], "note": "Not a GWP flow.", "kind": "lci" } ] }, { "id": "eve-08", "module": "A2", "stage": "Transport", "name": "Roundwood transport to sawmill", "description": "", "flows": [ { "id": "f1", "flow": "Truck transport", "amount": 85, "unit": "t.km", "basis": "DU", "ef": "truck", "status": "A", "dq": 4, "sources": [ "S38" ], "note": "= 0.85 t x 100 km.", "kind": "input", "range": [ 42.5, 170 ] } ] }, { "id": "eve-08b", "module": "A2", "stage": "Transport", "name": "Adhesive and packaging to the CLT plant", "description": "Inbound road freight of non-wood inputs.", "flows": [ { "id": "f1", "flow": "Truck transport", "amount": 3.0135, "unit": "t.km", "basis": "DU", "ef": "truck", "status": "A", "dq": 4, "sources": [ "S38" ], "note": "= 6.03 kg x 500 km (assumed supplier distance).", "kind": "input", "range": [ 1.2054, 6.027 ] } ] }, { "id": "eve-08c", "module": "A3", "stage": "Sawmill", "name": "Log yard handling", "description": "Unloading, sorting and feeding logs with a wheel loader.", "flows": [ { "id": "f1", "flow": "Diesel, wheel loader", "amount": null, "unit": "L", "basis": "m3rw", "ef": "diesel_nr", "status": "G", "dq": 5, "sources": [], "note": "Plant-specific.", "kind": "input" } ] }, { "id": "eve-09", "module": "A3", "stage": "Sawmill", "name": "Debarking and sorting", "description": "", "flows": [ { "id": "f1", "flow": "Electricity", "amount": null, "unit": "kWh", "basis": "DU", "ef": "elec_fr", "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-10", "module": "A3", "stage": "Sawmill", "name": "Sawing into boards", "description": "", "flows": [ { "id": "f1", "flow": "Electricity", "amount": null, "unit": "kWh", "basis": "DU", "ef": "elec_fr", "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-11", "module": "A3", "stage": "Sawmill", "name": "Kiln drying to 12% MC", "description": "Biomass heat (biogenic) + electricity.", "flows": [ { "id": "f1", "flow": "Heat, biomass (biogenic)", "amount": null, "unit": "MJ", "basis": "DU", "ef": null, "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" }, { "id": "f2", "flow": "Electricity, fans", "amount": null, "unit": "kWh", "basis": "DU", "ef": "elec_fr", "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-12", "module": "A3", "stage": "CLT plant", "name": "Grading, finger jointing, planing", "description": "", "flows": [ { "id": "f1", "flow": "Electricity", "amount": null, "unit": "kWh", "basis": "DU", "ef": "elec_fr", "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-13", "module": "A3", "stage": "CLT plant", "name": "Adhesive application", "description": "Polyurethane adhesive.", "flows": [ { "id": "f1", "flow": "PU adhesive", "amount": 5.63, "unit": "kg", "basis": "DU", "ef": null, "status": "S", "dq": 2, "sources": [ "S22" ], "note": "Amount from EPD; GWP factor not available in open sources.", "kind": "input" } ] }, { "id": "eve-14", "module": "A3", "stage": "CLT plant", "name": "Layup and pressing", "description": "Vacuum or hydraulic press.", "flows": [ { "id": "f1", "flow": "Electricity", "amount": null, "unit": "kWh", "basis": "DU", "ef": "elec_fr", "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-15", "module": "A3", "stage": "CLT plant", "name": "CNC machining of openings", "description": "", "flows": [ { "id": "f1", "flow": "Electricity", "amount": null, "unit": "kWh", "basis": "DU", "ef": "elec_fr", "status": "G", "dq": 5, "sources": [], "note": "", "kind": "input" } ] }, { "id": "eve-16", "module": "A3", "stage": "CLT plant", "name": "Packaging", "description": "", "flows": [ { "id": "f1", "flow": "PE film (70% recycled)", "amount": 0.207, "unit": "kg", "basis": "DU", "ef": null, "status": "S", "dq": 2, "sources": [ "S22" ], "note": "EF not available.", "kind": "input" }, { "id": "f2", "flow": "PP bands", "amount": 0.19, "unit": "kg", "basis": "DU", "ef": null, "status": "S", "dq": 2, "sources": [ "S22" ], "note": "EF not available.", "kind": "input" } ] }, { "id": "eve-17", "module": "A4", "stage": "Transport", "name": "Delivery to site", "description": "", "flows": [ { "id": "f1", "flow": "Truck transport", "amount": 43.56, "unit": "t.km", "basis": "DU", "ef": "truck", "status": "A", "dq": 4, "sources": [ "S38" ], "note": "= 0.4356 t x 100 km.", "kind": "input", "range": [ 21.78, 87.12 ] } ] }, { "id": "eve-18", "module": "A5", "stage": "Installation", "name": "Crane lifting and fixing", "description": "EPD A5 value used as proxy.", "flows": [ { "id": "f1", "flow": "Installation (EPD A5 proxy)", "amount": 1.59, "unit": "kgCO2e", "basis": "DU", "ef": "direct", "status": "P", "dq": 4, "sources": [ "S24" ], "note": "", "kind": "input" } ] }, { "id": "eve-19", "module": "A5", "stage": "Installation", "name": "Screws, angle brackets, tapes", "description": "", "flows": [ { "id": "f1", "flow": "Fasteners and membranes", "amount": null, "unit": "kg", "basis": "DU", "ef": null, "status": "G", "dq": 5, "sources": [], "note": "Project-specific.", "kind": "input" } ] } ], "biogenic": { "dry_mass_kg": 383.929, "carbon_fraction": 0.5, "co2_kg": 703.869, "status": "D", "sources": [ "S45", "S22" ], "note": "Oven-dry mass = 430/1.12." }, "info": [ { "label": "Cross-check: sawn spruce carbon content", "value": "197 kg C/m3 (722 kg CO2/m3)", "note": "Consistent order of magnitude.", "sources": [ "S24" ] } ], "benchmark": { "label": "Stora Enso CLT EPD S-P-02033, GWP A1-A3", "value": 53.8, "unit": "kg CO2e/m3", "modules": "A1-A3", "use_for_residual": true, "sources": [ "S23" ], "note": "Background data ecoinvent. Density 470 kg/m3." } }, "results": { "total_fossil_gwp": 20.30118125, "range": [ 14.434472499999998, 32.7618625 ], "modules": { "A1": { "gwp": 7.198499999999999, "lo": 7.1145, "hi": 8.1465 }, "A2": { "gwp": 7.701181249999999, "lo": 3.8242224999999994, "hi": 15.402362499999999 }, "A3": { "gwp": 0, "lo": 0, "hi": 0 }, "A4": { "gwp": 3.8115, "lo": 1.90575, "hi": 7.623 }, "A5": { "gwp": 1.59, "lo": 1.59, "hi": 1.59 } }, "biogenic_co2_stored": 703.869, "coverage": 0.2857142857142857, "dq_weighted": 3.56416329222222, "residual": { "benchmark": 53.8, "modelled_a1_a3": 14.899681249999999, "value": 38.90031875, "share_explained": 0.27694574814126394 } } }