Process Data set: Half-turn staircase without risers, with and without railing on one side (en) en
Process information
| Key Data Set Information | |
| Location | DK |
| Geographical representativeness description | Denmark |
| Reference year | 2025 |
| Name |
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| Use advice for data set | This Environmental Product Declaration (EPD) is based on a cradle-to-grave approach and includes the following life cycle modules, in accordance with EN 15804: A1–A3 (Product stage): Covers the extraction and processing of raw materials, transportation of materials to the production site, and the manufacturing of the staircase components. This includes the processing of solid wood, adhesives, metal fasteners, and surface treatments. A4 (Transport): Accounts for the transportation of the finished staircase from the production site to the place of installation. A5 (Construction/installation): Includes the activities related to on-site installation of the staircase, such as handling, assembly, use of fasteners and adhesives, and disposal of packaging materials. C1 (Deconstruction/demolition): Refers to the dismantling of the staircase at the end of its service life. C2 (Transport): Covers the transport of dismantled materials to waste treatment or recycling facilities. C3 (Waste processing): Includes processes such as sorting, shredding, and other pre-treatment before final disposal or recycling. C4 (Disposal): Accounts for the final disposal of materials not suitable for recycling or energy recovery (e.g., landfill or incineration without energy use). D (Benefits and loads beyond the system boundary): Considers potential benefits and avoided impacts from the recycling and energy recovery of materials, such as reuse of wood in secondary applications or energy generation from waste wood, as well as metal recycling. |
| Technical purpose of product or process | Wooden staircase for indoor housing with a width of 90–95 cm. The staircase is made of solid wood. The staircase is constructed from solid wood, primarily pine and oak. Additional wood types may also be included. Adhesives, metal fasteners, and surface treatments are used in the production to ensure stability, durability, and a high-quality finish. |
| General comment on data set | Data quality: Specific data for the product composition are provided by the manufacturer. The data represent the production of the declared product and were collected for EPD development in the year of study. Background data is based on EPDs according to EN 15804 and different LCA databases. The data quality of the raw materials in A1 is presented in the table below. Allocation: The allocation is made in accordance with the provisions of EN 15804. In forestry, economic allocation between sawn timber and solid wood is used. At sawmills, energy, water, waste, materials and internal transport are divided into sub-processes and then allocated according to income between the main and secondary products. Environmental impact and resource consumption for the primary production of recycled materials is allocated to the original product system. Cut-off criteria: All major raw materials and all the essential energy is included. The production processes for raw materials and energy flows with very small amounts (less than 1%) are not included. These cut-off criteria do not apply for hazardous materials and substances. |
| Copyright | Yes |
| Owner of data set | |
| Quantitative reference | |
| Reference flow(s) |
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| Biogenic carbon content |
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| Time representativeness | |
| Data set valid until | 2030 |
| Technological representativeness | |
| Technology description including background system | Wood materials: Solid pine and oak. Adhesives: High-strength glue suitable for indoor staircase applications. Fasteners: Metal screws provide reinforcement and secure assembly. Surface treatment: Protective coatings applied for durability, aesthetics, and resistance to wear. Production quality: All wood is processed and finished to meet requirements for indoor housing staircases with a width of 90–95 cm |
Modelling and validation
| Subtype | specific dataset | ||||
| LCA methodology report | |||||
| Data sources, treatment and representativeness | |||||
| Documentation of data quality management | |||||
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| Completeness | |||||
| Validation | |||||
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| Compliance Declarations | |||||
| Compliance |
Compliance system name
EN 15804+A2
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Approval of overall compliance
Fully compliant |
Nomenclature compliance
Fully compliant |
Methodological compliance
Fully compliant |
Review compliance
Fully compliant |
Documentation compliance
Fully compliant |
Quality compliance
Fully compliant |
| Compliance |
Compliance system name
|
Approval of overall compliance
Fully compliant |
Nomenclature compliance
Fully compliant |
Methodological compliance
Fully compliant |
Review compliance
Fully compliant |
Documentation compliance
Fully compliant |
Quality compliance
Fully compliant |
| Compliance |
Compliance system name
|
Approval of overall compliance
Fully compliant |
Nomenclature compliance
Fully compliant |
Methodological compliance
Fully compliant |
Review compliance
Fully compliant |
Documentation compliance
Fully compliant |
Quality compliance
Fully compliant |
Administrative information
| Data generator | |
| Data set generator / modeller |
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| Data entry by | |
| Time stamp (last saved) | 2025-11-10T16:41:34 |
| Data set format(s) | |
| Publication and ownership | |
| UUID | 5dabddb3-3fca-487e-8faf-3699db588cc2 |
| Date of last revision | 2025-11-06T15:21:30.6596909Z |
| Data set version | 00.02.001 |
| Registration authority | |
| Registration number | NEPD-14000-14267 |
| Owner of data set | |
| Copyright | Yes |
| License type | Free of charge for all users and uses |
| Access and use restrictions | None |
Environmental indicators
Indicators of life cycle