In Software Architecture (SA), design decisions are considered valuable knowledge, and Architectural Knowledge (AK) is key to increase software quality. Several proposals address implementation of Knowledge Management for Software Architecture, but very few address sharing and distribution of AK. We propose that AK be shared as concrete usage scenarios, elicited from design meetings; this proposal builds on Knowledge Management sharing insights and on DVIA (Design Verbal Interventions Analysis), which identifies design decisions by mapping verbal interventions in recorded design meetings. Specifically, we show an scenario of decision impact analysis for introducing a new functional requirement. The approach was initially validated in a case study with undergraduate practitioners video-recorded while team-designing a command-and-control center for the pan-Andean spatial project. Initial qualitative results suggest that AK reuse is actually helped by sharing specific design scenarios.