Untreated cleft pointed sweet-chestnut stakes

1. Scope and Applicability

This category covers individual untreated Castanea sativa stakes made by cleaving along the grain and pointing, delivered green or naturally seasoned. It supports production data for agricultural fencing and plant support, with each size and delivery-moisture class modelled separately. It does not establish equivalent structural performance or service life for different shapes.

The representative real form is a debarked cleft chestnut stake with a four-face point at the larger end, supplied without chemical treatment or artificial drying (eff-split-stake, p. 1). This manufacturer's specification supports a route example, not an industry yield, energy, lifetime, density or carbon-footprint default. Forestry practice independently distinguishes cleft fencing material, round stakes, sawn posts and other market assortments (forestry-practice-1958, chapter 17); its historic dimensions are not present-day requirements.

Hoopwood for hoops, unpointed split poles, structural piles, rough walking-stick/umbrella/tool-handle blanks and chipwood have distinct forms or functions and are excluded. Longitudinally sawn, turned, bent, drilled, profiled, preservative-treated and artificially dried products are excluded. Cross-cutting to length and trimming the point are allowed; sawing a longitudinal face to form a post is excluded. A classification label alone cannot widen this scope.

2. Product Category Identity

Field	Value
canonical_pcr_id	pcr.other-transportable-goods-except-metal-products-machinery-and-equipment.products-of-wood-cork-straw-and-plaiting-materials.hoopwood-split-poles-piles-pickets-and-stakes-of-wood-pointed-but-not-sawn-lengthwise-w-a256e150
classification_refs	CPC 3.0 31330; narrower; scope and accepted decisions: classifications/mappings/cpc-3.0-to-pcr.yaml and its referenced ADRs
covered_products	Debarked, cleft, pointed Castanea sativa stakes for agricultural fencing or plant support; green or naturally seasoned
excluded_products	Hoopwood; unpointed split poles; structural piles; rough stick blanks; chipwood; sawn-lengthwise, turned, bent, drilled, profiled, treated or artificially dried products
representative_product	An individual debarked cleft Castanea sativa stake pointed on four faces at the larger end
production_route	Delivered untreated chestnut roundwood → grading and cross-cutting → debarking → grain cleaving → pointing → optional natural seasoning → acceptance and bundling
market_state	Finished individual stake at conversion-yard gate; declared delivery moisture and geometry; transport packaging excluded from net reference mass

3. Reference Flow

Field	Value
What	Provide an individual pointed cleft stake for declared agricultural fencing or plant-support use
How much	1 kg net accepted stake at declared delivery moisture
How well	Declared species, length, cleft section and point geometry; acceptance excludes broken or unsuitable pieces; no common strength class assumed
How long or cycle	One manufacturing and gate-delivery cycle; use-stage lifetime must be established by the downstream application
reference_flow_link	final_stake

Field	Value
Reference amount	1
Reference product flow	Wood material d07bf4c9-7cd0-46ad-a6b3-2fd11fe08f98
Reference flow property	Mass 93a60a56-a3c8-11da-a746-0800200b9a66
Reference unit group	Units of mass 93a60a57-a4c8-11da-a746-0800200c9a66
Reference unit	kg
Required qualifiers	Foreground physical locator restricted to one actual finished individual stake specification, not an unspecified wood-containing assembly; actual product/provider, yard and campaign; measured net accepted gate mass B and calibration; no glue, binder, coating or chemical treatment; no artificial drying; Castanea sativa; agricultural fencing or plant support; dimensions and cleft geometry; pointing method and larger-end point; debarked; untreated; green or naturally seasoned; delivery moisture on dry basis; net mass excluding packaging; conversion-yard gate; actual equipment and electricity supply boundary

Required qualifiers must appear in dataset metadata, process notes or the reference-flow description. The kilogram is a production reporting unit; it does not prove that stakes of different geometry deliver equivalent service. The broad Wood material identity is used only with these concrete stake qualifiers; it establishes no matched forestry or production background, supplier burden, strength, durability, certification, compliance or measured quantity.

4. Measurement and Unit Rules

rule_id	Applies to	Required property	Required unit	Rule
net_reference_mass	final_stake	Mass	kg	Use calibrated net weighing of accepted stakes at gate moisture, subtracting packaging tare; raw fields and calibration in cp_mass.
same_denominator	all inventory rows	Row-specific property	Row-specific unit	Use per 1 kg reference flow throughout; collect all exchanges and accepted net mass over the same traced batch or reconciled campaign.
moisture_basis	wood_input; final_stake; bark_waste; offcut_waste; sawdust_waste	Mass	kg	Measure wet mass and oven-dry sample mass for the same material and time; dry-basis moisture fraction u = (wet mass - dry mass) / dry mass. Do not substitute wet-basis moisture or a generic species density (usda-wood-handbook-2021, p. 4–1).
electricity_unit	electricity	Net calorific value	MJ	This database property identifies electrical energy, not delivered thermal heat. Preserve the electricity meter boundary; 1 kWh = 3.6 MJ. Record purchased electricity once and include internal transformation losses; no steam or boiler heat is inferred.

5. System Boundary

Boundary Abstraction

Field	Value
declared_starting_condition	Delivered untreated Castanea sativa roundwood at the rough-conversion yard, with species, wet mass and moisture records
starting_condition_role	Upstream product input to foreground conversion, not an environmental wood-resource extraction
product_classification_scope	CPC 3.0 31330 is context; only untreated cleft pointed sweet-chestnut stakes are supported
recursive_input_rule	Exclude purchased finished stakes from this route. Rework inside the yard is an internal transfer; never count it as both new wood input and new product output.
upstream_dataset_requirement	Link an independently applicable forestry/harvest and delivered-roundwood dataset including actual transport to the yard; disclose its species, region, moisture, forestry carbon and allocation basis. A roadside dataset needs separately modelled delivery transport.
disclosure	Disclose whether the dataset is foreground gate-to-gate or includes upstream burdens; declare moisture, equipment, supply voltage, packaging, waste fate and route exclusions

The foreground includes receiving, grading, cross-cutting to length, bark removal, grain cleaving, pointing, optional natural seasoning, handling, rejection, dust control, maintenance and bundling. Stages remain separately metered or observed within one aggregated foreground unit. There is only one final-product output; physical transfer between pointing, seasoning and bundling is internal, not another saleable reference output.

Natural seasoning is conditional: record stack arrangement, dates, site weather, initial/final moisture, rejects and handling energy. Green delivery may have no dedicated seasoning stage, but incidental storage moisture change still needs reconciliation. The Wood Handbook differentiates natural air drying from fan-assisted or heated drying (usda-wood-handbook-2021, p. 13–6); sawn-lumber schedules and moisture targets are not imported into stakes. Artificial drying is outside this supported route. A future extension must identify its actual equipment, heat source, water/condensate, drying emissions and measured energy; a kiln-dried lumber list is insufficient. Onsite combustion, fuel-powered equipment and heat/steam supply are excluded from this route and require additional atomic rows before application. Existing upstream biogenic CO2 exchanges must remain in the linked LCI; a climate-accounting convention cannot delete physical biogenic emissions. Stored product carbon is not an avoided-emission credit.

6. Process Inventory Structure

Process Map

process_id	process_name	inclusion	inclusion_condition	role	quantitative_reference
stake_conversion	Rough conversion and gate delivery	required	Declared manual or electrically powered cleaving and pointing route; no artificial drying or onsite combustion	foreground	1 kg reference flow

Stage observations in cp_route distinguish cross-cutting, debarking, cleaving, pointing, natural seasoning, sorting and bundling. Cleaving follows the grain using wedges or a splitter; the point is formed by controlled trimming, not by turning the stem or sawing longitudinal post faces. Equipment design, order and actual energy are site records, not assumed facts about every manufacturer.

Process: Rough conversion and gate delivery (stake_conversion)

Inputs

Product flows

Untreated Castanea sativa roundwood, delivered to conversion yard (wood_input)

Record actual untreated unglued Castanea sativa roundwood delivered to this yard, with supplier and forestry origin, incoming dimensions and roundwood form, bark condition, wet mass, moisture and opening/closing stocks. Wood material is only the foreground physical locator for this separately described raw-wood input. Its use for both incoming roundwood and finished stakes does not make their states interchangeable or imply recursion, a matched upstream provider, transport or burden. Independently review the applicable upstream forestry/harvest and delivered-roundwood dataset and actual delivery transport before claiming upstream coverage.

• Selected flow: Wood material d07bf4c9-7cd0-46ad-a6b3-2fd11fe08f98
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_wood and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_wood

Alternating current (electricity)

Meter cross-cutting, debarking, splitting, pointing, dust extraction, internal handling and bundling where powered; no drying heat included. This UUID applies only to documented 1–35 kV grid supply to the yard; include onsite transformation and its losses. A different voltage or supply route requires an applicable separate identity. Verify actual supply geography, provider and year, grid mix and loss boundary before linking background electricity; this physical locator does not establish a generic world supply or a default production geography.

• Selected flow: Alternating current 3d76981f-964a-4865-b588-0e067a2a1163
• Flow property / unit: Net calorific value / MJ
• Amount rule: Collect actual exchange amount through cp_energy and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_energy

Lubricating oil (lubricating_oil)

Include petroleum-fraction lubricating oil replenishment only where equipment actually uses that oil. Reconcile opening/closing stock, purchases, retained lubricant, recovered oil and losses; do not use it for PAO or biodegradable chain oils.

• Selected flow: Lubricating oil 66628f20-9d33-4997-bd6c-6357453fa268
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_maintenance and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_maintenance

Polypropylene twine (polypropylene_twine)

Record PP twine leaving with shipped bundles, conditional on actual use. Its mass is outside net stake mass. Other packaging components require separate rows. Confirm actual supplied PP twine grade, geometry and supplier/use-state compatibility; the identity does not transfer farm-gate geography, an industry-average amount or a production background to this yard.

• Selected flow: Polypropylene twine 0f3c91d9-9f30-42ab-b5e4-0b3ce42cb0fe
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_pack and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_pack

Outputs

Product flows

Untreated cleft pointed Castanea sativa stake, at conversion-yard gate (final_stake)

Record accepted net pointed-stake output once after optional natural seasoning and acceptance, excluding packaging. All exchange denominators refer to this same output mass. Wood material is the foreground locator for one actual debarked, grain-cleft, pointed Castanea sativa stake specification, with recorded dimensions, cleft section, point geometry, green or naturally seasoned moisture, untreated/unglued/uncoated state and yard/provider gate. It is distinct from incoming roundwood and does not establish measured mass or manufacturing background by itself.

• Selected flow: Wood material d07bf4c9-7cd0-46ad-a6b3-2fd11fe08f98
• Flow property / unit: Mass / kg
• Amount rule: 1 kg
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_mass

Waste flows

Bark (bark_waste)

Weigh removed bark leaving for external waste management; moisture and destination are recorded. Saleable bark is a coproduct and requires a separately verified product row before applying this draft.

• Selected flow: Bark a2536c07-fbe1-4a12-90fb-21bd2e99b74e
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_residues and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_residues

Offcut (offcut_waste)

Weigh actual loose non-agglomerated, untreated and unglued solid chestnut cross-cut ends, coarse pointing remnants and rejects discarded as offcuts, excluding bark, captured fine sawdust, airborne dust and internal rework. Record actual particle form, moisture, contamination and destination and verify receiver/provider acceptance of that waste state before matching waste management; the broad offcut identity establishes no treatment route or burden.

• Selected flow: Offcut acc22294-8e77-4784-988f-2499be3c60eb
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_residues and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_residues

sawdust waste (sawdust_waste)

Weigh collected untreated sawdust and wood dust once; captured dust is solid waste, not an atmospheric emission. Use the untreated combustion-or-recovery identity only when the actual receiver and waste state fit the documented combustion or material-recovery branch; independently match its provider and management boundary. It does not mandate incineration or establish a disposal service, energy credit or waste-treatment background. Another destination requires separate identity/applicability review; keep captured dust separate from airborne emissions.

• Selected flow: sawdust waste e1a44d20-d968-4d64-bd7c-253a1441ab35
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_residues and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_residues

Used lubricating oil (spent_oil)

Include actual recovered used lubricating oil leaving equipment for external handling. Document waste specification, stocks and treatment linkage; do not assume all oil input becomes this output.

• Selected flow: Used lubricating oil 55d93375-7f04-4166-b2a2-88ce929051a5
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_maintenance and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_maintenance

Elementary flows

particles (PM2.5) (pm25)

Record uncaptured wood dust to outdoor air in the PM2.5 fraction after control. Measure release boundary and size distribution; no sawmill PTE factor is imposed on cleaving or pointing.

• Selected flow: particles (PM2.5) 08a91e70-3ddc-11dd-9293-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_air and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air

particles (PM2.5 - PM10) (pmcoarse)

Record the exclusive airborne fraction above PM2.5 and up to PM10; inclusive PM10 and PM2.5 totals must be differenced on the same sampling basis.

• Selected flow: particles (PM2.5 - PM10) 08a91e70-3ddc-11dd-9501-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_air and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air

particles (> PM10) (pmover10)

Record outdoor-air wood dust above PM10; reconcile it with total particulate mass on the same sampling basis. Do not add inclusive PM10 or total dust as extra exchanges.

• Selected flow: particles (> PM10) fe0acd60-3ddc-11dd-a70a-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Collect actual exchange amount through cp_air and divide by the same-period accepted net stake mass; retain absence evidence when demonstrably not used or emitted.
• Value mode: foreground_record
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: collected_record
• Collection protocol: cp_air

water vapour (water_vapour)

For documented natural-seasoning or storage moisture loss, calculate evaporated water from paired dry/wet balances, separating rain ingress, liquid drainage and wood rejection. A mass difference alone does not prove evaporation. Only substantiated positive net evaporation belongs to this output; actual atmospheric moisture uptake, rain input and liquid drainage require separately identified atomic exchanges where they cross the boundary, never a negative water-vapour output or unexplained balance closure.

• Selected flow: water vapour fe0acd60-3ddc-11dd-ac04-0050c2490048
• Flow property / unit: Mass / kg
• Amount rule: Calculate from the cp_moisture water balance and divide by the same-period accepted net stake mass.
• Value mode: calculated_value
• Specificity: site_specific
• Normalization basis: per 1 kg reference flow
• Basis kind: reference_flow
• Evidence kind: calculated_from_collection
• Collection protocol: cp_moisture

7. Allocation and Co-product Handling

Separate batches and meter stages first to avoid allocation where feasible. Keep a complete physical wood, moisture and carbon ledger before any burden allocation: incoming wood plus opening stock equals accepted output, residues, emissions and closing stock with measured reconciliation residuals. Internal stage links carry identical physical quantities at both ends. A coproduct's physical output is never multiplied by an allocation fraction.

This route's residue rows describe discarded wastes. If any bark, split offcut or sawdust has a separately sold function, identify it as a real coproduct with a verified atomic product row and documented end state before use. Burden allocation then requires an independently reviewed causal relationship or justified alternative, with site mass, moisture, value and sensitivity evidence. No universal mass/economic allocation share, displaced-fuel credit or avoided-disposal credit is specified. External waste management remains linked once; upstream forestry allocation must be disclosed separately.

8. Foreground Data Collection, Calculation, and Quality Rules

Data Collection Protocols

protocol_id	process_id	flow_role	record_type	raw_fields	collection_method	unit	frequency	temporal_coverage	site_scope	aggregation_rule	quality_evidence
cp_mass	stake_conversion	final_stake	weighing	batch; accepted net kg; packaging tare; species; geometry; gate moisture; scale calibration	Weigh accepted batch on calibrated scale; exclude rejected stakes and packaging; Record denominator B as net accepted stake mass; retain the measured production total separately and divide raw exchange totals by B once under normalize_batch.	kg	each accepted batch	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	calibration and acceptance records
cp_wood	stake_conversion	wood_input	receiving records	batch; supplier; species proof; delivered wet kg; moisture; bark state; upstream dataset; transport coverage; stock	Weigh delivered chestnut logs and reconcile opening/closing stock and traced upstream delivery; Calculate the recorded numerator as follows: consumed delivered roundwood; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	kg	each received lot	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	species, weighbridge and supplier records
cp_energy	stake_conversion	electricity	meter records	meter starts/ends; kWh; interval; voltage; supply mix; transformer losses; stage; other users; accepted net kg	Read calibrated meters and isolate actual attributable demand; reconcile to purchased supply; Calculate the recorded numerator as follows: attributable purchased kWh × 3.6; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	MJ	each batch or reconciled campaign	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	meter calibration and supplier supply-boundary records
cp_maintenance	stake_conversion	lubricating_oil; spent_oil	maintenance records	oil specification; opening/closing stock; purchases; replenishment; retained kg; recovered used kg; leakage assessment; accepted net kg	Measure net consumption and recovered used oil independently; inspect loss pathways; Calculate the recorded numerator as follows: each distinct input or output kg; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	kg	each service event reconciled to campaign	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	oil specification, service logs and waste transfer records
cp_pack	stake_conversion	polypropylene_twine	packing records	twine polymer; packaging issue/return kg; bundle count; accepted net kg; other packaging	Weigh PP twine issued less returns and reconcile material actually shipped; Calculate the recorded numerator as follows: shipped twine kg; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	kg	each shipping batch	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	packing records and material specification
cp_residues	stake_conversion	bark_waste; offcut_waste; sawdust_waste	weighing and waste records	separate residue type; wet kg; dry-basis moisture; stage; destination; sold/discarded status; stocks; accepted net kg	Weigh segregated residue streams; reconcile mass, dust capture and destinations; Calculate the recorded numerator as follows: each distinct waste kg; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	kg	each batch and transfer	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	weighing, moisture and destination records
cp_air	stake_conversion	pm25; pmcoarse; pmover10	emission measurements	operation; exhaust/fugitive boundary; sampled air volume; mass; particle fractions; control status; activity; sampling uncertainty; accepted net kg	Measure actual outdoor releases with validated particle-size sampling and traced activity integration; characterize fugitive releases separately; Calculate the recorded numerator as follows: each exclusive emitted particle fraction kg; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	kg	representative operating states and campaign reconciliation	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	sampling methods, calibration, exhaust/fugitive coverage and uncertainty
cp_moisture	stake_conversion	water_vapour	paired moisture and water records	batch; stage; wet kg; oven-dry sample kg; stack dates; weather; rain ingress; drainage kg; rejects; stocks; accepted net kg	Use paired same-lot wet/dry samples and traceable mass records; reconcile actual seasoning/storage water loss separately from liquid drainage; Calculate the recorded numerator as follows: evaporated water kg; retain the matched complete-campaign raw total and divide by B once only under normalize_batch.	kg	receiving, before/after storage and dispatch	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	sample representativeness, drying-test records and water balance
cp_route	stake_conversion	all inventory rows	site observation	stage order; equipment; manual/electric operation; natural seasoning; absence of chemical/artificial drying/combustion; all utility/material/waste/emission pathways	Inspect actual process and supplier records; identify all conditional and unlisted physical exchanges; Route-record scope: route records refer to the same batch or campaign and per 1 kg reference flow.	stage records	initial survey and every route change	Same traced campaign including storage and dispatch	One documented conversion yard	per 1 kg reference flow	process survey, photos, equipment and supplier records

All raw numerator quantities are campaign totals, divided once by the same accepted net gate mass B (kg). B is measured, never a guessed conversion from stake count. Counts and geometric volume are supplementary QA; volume-to-mass use requires the same lot's measured density and moisture. No generic density, yield, energy or emission factor is specified. The following balances retain physical totals before normalization or burden allocation.

Calculation Rules

rule_id	Applies to	Formula or rule	Inputs	Output	source_ids
normalize_batch	all inventory rows	Each campaign exchange total is divided once by accepted net gate mass B in kg; final_stake is 1 kg.	campaign exchange totals; B; cp_mass	exchange amount per 1 kg reference flow
dry_wood_balance	wood_input; final_stake; bark_waste; offcut_waste; sawdust_waste	For each wood stream, dry mass = wet mass / (1 + u); reconcile dry wood inputs plus opening stock against outputs plus closing stock, including airborne wood dust and quantified losses.	wet masses; u; stocks; cp_moisture; cp_residues; cp_air	physical dry-wood ledger before allocation	usda-wood-handbook-2021
water_balance	water_vapour	Evaporated water = incoming wood water + opening water stock + rain ingress - outgoing wood/residue water - closing water stock - liquid drainage; retain a separate reconciliation residual and do not force it to evaporation.	paired wet/dry mass; water ingress; drainage; stock; cp_moisture	evaporated water campaign kg; normalized water_vapour	usda-wood-handbook-2021
particle_partition	pm25; pmcoarse; pmover10	On the same sampling basis, PMcoarse = PM10 - PM2.5 and PMover10 = total particulate - PM10. Check ordered nonnegative totals; final exchanges are PM2.5, PMcoarse and PMover10 only.	cp_air; total particulate; PM10; PM2.5	three exclusive airborne particle fractions
carbon_balance	wood_input; final_stake; bark_waste; offcut_waste; sawdust_waste	Use measured dry mass and species/lot-specific carbon evidence for wood streams; reconcile carbon inputs, stocks, outputs and documented releases before burden allocation. Keep biogenic carbon separate from fossil lubricant/packaging carbon. No universal carbon fraction or sink credit.	cp_wood; cp_mass; cp_residues; cp_air; lot carbon evidence	physical wood-carbon ledger and explicit uncertainty
complete_period_normalization	all inventory rows	Every existing campaign, batch or lot amount rule and linked collection protocol uses one documented complete reporting-period pool for the same declared product, grade, route, configuration, site and reference state. Accepted-lot wording identifies the denominator only; retain all attributable startup, shutdown, wholly failed or zero-output batches, rejects, work in progress and rework in the raw native-unit numerator records. Count reworked reference product once only when finally accepted. Sum each attributable exchange over this matched pool, divide once by its strictly positive accepted reference-product quantity in the declared denominator unit, and scale to the declared reference quantity. Do not average batch ratios, drop a failed batch, pool unrelated products/periods or replace native numerator units. If the entire matched pool has no accepted output, retain the unnormalized absolute inventory and require review; issue no normalized result or fabricated output. Preserve stock/return and physical-transfer ledgers independently of burden allocation; allocation never removes already-incurred failed/rework activity.	all linked raw collection protocols; accepted reference-product pool; stock and rework links	native exchange unit per declared reference quantity; zero-output pool remains unnormalized

Data Quality Requirements

requirement_id	Applies to	Requirement	Evidence
route_coverage	all inventory rows	Survey every actual input/output. Missing fuels, chemicals, packaging, liquids or VOC species require separate atomic rows and applicable identities before application. Do not treat an unavailable measurement as zero.	cp_route and measured process records
identity_state	wood_input; final_stake	Confirm each row’s actual species, physical form, processing route, moisture, provider gate, property and unit. A broad foreground material identity is applicable only with these specific row qualifiers; incoming roundwood and finished pointed stakes remain distinct exchanges even with the same UUID. Contradictory routes cannot substitute; matching provider/background burdens and measured quantities require independent evidence.	supplier/product specifications and verified flow records
mass_reconciliation	all inventory rows	Same batch boundaries, net B, stocks, wood, water and carbon balances; retain uncertainty and explain residuals; no invented closure tolerance.	cp_mass; cp_wood; cp_residues; cp_moisture
emission_coverage	pm25; pmcoarse; pmover10; water_vapour	Measure post-control outdoor emissions and document subcompartment; unspecified air may not imply high-stack or urban conditions. Check VOC/leaching/drainage pathways and extend inventory for each actual species or stream.	cp_air; cp_moisture; cp_route
conditional_absence	all inventory rows	Record measured amount or documented non-applicability for each row; manual operation does not justify assumed absence of all handling energy or emissions.	site survey and campaign records

9. Validation Rules

• Require exactly one final_stake reference output of 1 kg net accepted stakes, with identical denominators and paired Chinese/English rules.
• Check Castanea sativa, grain cleaving and pointed finished state; reject longitudinal sawing, turning, bending, profiling, treatment or artificial drying.
• Require measured B and complete batch/stock reconciliation, including water and unallocated physical carbon ledgers. Nonnegative amounts and explained uncertainty are required; do not invent parameter values.
• Confirm each adopted UUID's type, property, unit, route and compartment; complete actual qualifiers and supplier/background compatibility before claiming a complete finished dataset. The broad foreground wood locator alone does not prove a matched background or collected amount; do not replace Waste or Elementary identities with Product flow material.
• Require accepted qualifiers, actual route coverage and absence evidence; uncharacterized emissions or unsupported heat supply remain unresolved.
• Add only exclusive airborne particle fractions. Captured dust is a distinct solid stream. Never infer an environmental release from a technosphere waste row or count an upstream process emission twice.

10. Published Dataset Profile

Field	Value
dataset_role	Foreground gate-to-gate stake-conversion dataset; upstream extension only with applicable delivered-roundwood and waste-management datasets
downstream_use	secondary_dataset; background_dataset only after actual physical qualifiers, complete collected data and independently compatible provider/background evidence are established
allowed_use	Production of the declared untreated cleft pointed Castanea sativa stake geometry and green/naturally seasoned delivery state
excluded_use	Whole-leaf CPC coverage; hoopwood, poles, structural piles, handle blanks, chipwood; sawn, turned, bent, treated or artificially dried routes; unsupported service-life comparisons
required_metadata	Species, geometry, use, point shape, moisture, net reference mass, site, campaign, upstream transport and allocation, equipment, grid boundary, waste fate, packaging and emission coverage
required_quality_disclosure	Specific foreground identity qualifiers and unresolved provider/background compatibility, measured/estimated/skipped exchanges, natural-seasoning state, mass/water/carbon residuals, uncertainty, route exclusions and any burden allocation
update_trigger	New reference identity; different species/form/use, treatment/drying/energy route, packaging, coproduct or observed emission pathway

11. Data Sources

Source id	Type	Reference	Used for
eff-split-stake	literature	EFF Piquets, Fiche technique Piquet fendu, p. 1; https://www.eff-piquets.fr/wp-content/uploads/2025/10/Fiche-technique-Piquet-fendu.pdf	Representative species, cleft/debarked/pointed form and absence of artificial drying/chemical treatment; no lifetime or carbon claims adopted
forestry-practice-1958	official_guidance	Forestry Commission, Forestry Practice, Bulletin 14, seventh edition 1958, chapter 17, printed pp. 76–77; https://cdn.forestresearch.gov.uk/1958/04/fcbu014_7ed.pdf	Independent historic distinction between timber market assortments; no numeric defaults
usda-wood-handbook-2021	handbook	USDA Forest Products Laboratory, Wood Handbook, FPL-GTR-282 (2021), printed pp. 4–1, 13–6; https://www.govinfo.gov/content/pkg/GOVPUB-A13-PURL-gpo158673/pdf/GOVPUB-A13-PURL-gpo158673.pdf	Dry-basis moisture definition and distinctions between natural and artificial drying; no sawn-lumber schedules or industry parameters