Norwegian Standard for hollow core slabs for reuse – NS 3682
The standard covers the process from dismantling to the assessment of existing hollow core slabs so that they can be documented in a similar way as newly produced hollow core slabs.
The standard covers the process from dismantling to the assessment of existing hollow core slabs so that they can be documented in a similar way as newly produced hollow core slabs.
The standard is useful for producers of hollow core slab elements and consultants who design buildings and design dismantling of buildings. It can be used during the planning of the dismantling of buildings where hollow core slabs are desired to be reused or considered for reuse, and it specifies requirements for verification of the performance of reused hollow core slabs in concrete.
NS 3682 Hollow core slabs for reuse, which is the full name of the standard, defines a system for describing a comparable assessment of reused slabs as NS-EN 1168 describes for factory-made new slabs. The document is based on NS-EN 1168 and SN-CEN/TS 17440.
The system described is intended to meet the requirements of the Regulation on documentation of building products for building products that are not covered by a harmonized standard. NS 3682 was issued in February 2022 and was developed by a working group under the Norwegian Standards committee SN/K 7 Reference group for the concrete area. The working group consisted of members from NTNU, Stiftelsen Kontrollrådet, Contiga, Arcon Prosjekt, Skanska and Spenncon..
The work was supported by Betongelementforeningen and Byggevareindustrien, as well as by grants from the Ministry of Climate and Environment for circular economy work. The document is based on the experience and checklists shared by Skanska Norway and their work with the Oslo Storbylegevakt.