scope:

The digital transformation of the construction industry includes also the digital transformation of the supply change of construction products. With ISO 16739-1 exists an open language to design, transfer and maintain construction models. The construction models (eg. of a building) contain a digital twin of real-life products. The data of these products should be transported in a digital format on the way from the manufacturer to the building owner. This product data should be expressed also in an easy and open way. The creators of product data files should be able to do this manually or automatically, as they like it. The users of product data should be able to use it to: • Import products easily in the as-planned-bim-models to plan with the products in an early stage of development • Import delivered real life products easily in their as-built-bim-models to document them for a later stage of development These scenarios fit in the business models of manufacturers, planners, construction companies and facility managers. The working group 4 of CEN-TC442 has published proposals for creating new work items in the sector of CEN regarding the storage and the transport of product data in the sector of building information modelling (BIM): prEN ISO 23386: Building information modelling and other digital processes used in Construction - Methodology to describe, author and maintain properties in interconnected dictionaries prEN ISO 23387: Data templates for construction works entities, Part 1: Objects, collections, and relationships defining the general structure of data templates This standard defines a format for exchanging empty product data templates and filled product data templates (product data) and therefore fills the missing link between the product data sources (e.g. catalogues) from the manufacturers to the construction models of the designers and owners. The part 1 of the standard describes a way to represent information templates and configured products in a library based on a structure based on ISO 16739-1 (prEN ISO 16739-1) and how this relates to the upcoming standards prEN ISO 23386 and prEN ISO 23387. The part 2 will define the way, how a (requirements) request can be formulated with EN ISO 16739 and how this can be used to represent variants of configurable products. The requests by part 2 will be applicable to product libraries based on part 1. The part 2 will furthermore define a way, to create a constraint based product library for highly configurable products to support an interactive selection process. The application of an request to a "Part1-Library" and to a "Part2- Library" shall response same products as the result. It is up to the manufacturers to choose the way, they want to represent their products ("Part1-Library" and/or "Part2-Library"), they just have to be sure, that all requests can be applied to both types of libraries.