Category 3 data

What is category 3 data?

Category 3 data consists of environmental declarations based on generic environmental data, prepared by the Dutch Environmental Database. These declarations are used for products for which no category 1 or 2 environmental declaration is yet available. The data is compiled according to fixed principles and forms an important basis for calculating the environmental performance of construction works.

We divide category 3 data into two groups:

Category 3:

Brand-independent data (non-branded), owned and managed by the Dutch Environmental Database.
Not reviewed according to the NMD Review Protocol.
A 30% markup factor applies to this data.

Category 3a:

Brand-independent data (non-branded) for externally supplied energy carriers, such as electricity, gas, heat, and fuels, as well as for standardised data regarding the material-related impact of energy carriers.
Owned and managed by the Dutch Environmental Database.
The 30% markup factor does not apply.
For more information on energy carriers in the Dutch Environmental Database, read further here.

Note: Not alle information is available in English

Meer informatie over categorie 3-data

Lees verder over een van deze onderwerpen of lees op deze pagina meer achtergrondinformatie

on category 3 environmental declarations

including planning

in preparing category 3 environmental declarations

on environmental declarations

Cat. 3 Viewer API (beta)

The Dutch Environmental Database provides the Cat. 3 Viewer API (beta). This API allows users to easily consult and apply category 3 environmental data from the Dutch Environmental Database for exploratory purposes, in addition to the existing system of validated calculation tools.

Purpose and target audience

The objective is to use the available category 3 environmental declarations to derive an environmental performance calculation (MPG) input that adequately represents the actual building (design).

Category 3 data is prepared by the Dutch Environmental Database for the following target groups:

Clients in the Buildings & Infrastructure (B&U) sector, as a basis for reference designs, exploratory (design) studies, and use in tenders.
Market parties, such as engineering firms, consultancies, and contractors active in the B&U sector, as an information source for using NMD data via calculation tools.
LCA practitioners, to gain insight into the principles underlying category 3 data.

Updates

Category 3 data is automatically updated when the Dutch Environmental Database updates the NMD Base Process Database, for example, due to an update of the Ecoinvent database or changes in end-of-life processing scenarios. The most current category 3 data can always be viewed in the validated calculation tools or the Dutch Environmental Database viewer.

Requirements and guidelines

Category 3 data is prepared in accordance with the requirements and guidelines set out in the "Protocol for Initiating, Preparing, and Peer Reviewing Category 3 Data", which aligns with the Environmental Performance Assessment Method for Construction Works. This method is based on the current versions of ISO 14040, ISO 14044, and NEN-EN 15804+A2. The version of the Assessment Method applied can be found in the background information of each environmental declaration. If a Product Category Rule (PCR) is active for a specific element group, it will be used.

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Definitions

Term	Meaning
Element group	The first two digits of the elements in a construction work are coded according to NL-SfB (e.g., element group code 13: Ground floors).
Element	Further subdivision of an element group (e.g., 13.1: Non-structural, 13.2: Structural).
Component	Breakdown of an element into its main parts required to form the element together.
Product	Composition of multiple, single, or part of a component. Each product has its own environmental declaration, clearly describing its contents and which element and component it covers.
Product variants	Execution variants of a specific product, such as a hollow-core slab floor.
Environmental declaration	Information and environmental data about a product or process obtained from a life cycle assessment (materials, quantities per functional equivalent, service lives (cycles), emissions during use phase, construction waste, end-of-life processing scenarios).
Product compositions or complete product	Environmental declaration covering a complete element.