Section 6.4.2.2 of the standard SIA 262 states that the tightness of the cover concrete should be checked to assure the durability of a structural member. To achieve this with the air permeability method according to SIA 262/1, the experience gained mainly in the ASTRA-projects and related VSS-reports Nr. 506, 516 (Torrent 1993/1995), Nr. 587 (Brühwiler, 2005) and Nr. 604 (Jacobs, 2006) as well as from the RILEM Technical Committee „Non-Destructive Evaluation Of Cover Concrete“ should be compiled in a SIA-recommendation.

With the SIA-recommendation for the air permeability method according to SIA 262/1 the engineer/owner should obtain clear information about the quality control of structural members, e.g. in relation to the exposure class. Additionally testing laboratories should obtain clear information how to perform and evaluate the measurements.