Radon-control design for mixed-use developments
Mixed-use projects put apartments over retail or office, which means a single radon-control strategy has to protect occupants across different occupancy types sharing the same ground-contact slab and below-grade levels.
ANSI/AARST CC-1000-2018 governs radon-resistant design for new large buildings, and mixed-use construction falls squarely within it. The design has to account for podium slabs, parking levels, and the soil-gas paths that connect a commercial ground floor to the residential floors above.
We resolve those paths in a single engineered package: sub-slab collection, a continuous membrane, sealed penetrations, and a vent network that serves the whole building, reviewed and signed by a certified radon professional before it reaches your permit set.
What the design package covers
- Unified sub-slab depressurization across podium and ground-contact slabs
- Membrane and sealing details spanning commercial and residential levels
- Vent riser network routed through the full building height
- Coordination of soil-gas paths between stacked occupancy types
- Code-reference summary keyed to ANSI/AARST CC-1000-2018
Governing standard
Further reading
How to Design Radon Mitigation for Multifamily Buildings
Designing radon mitigation for a multifamily building to ANSI/AARST CC-1000-2018: package scope, passive vs. active systems, and HUD requirements.
Radon Control System Design for Commercial Buildings
A commercial radon control system design is a stamped plan that keeps soil gas out of a new building, fixing sub-slab layout, barrier, and vent stack.
Radon Mitigation Design Package Contents for Large Buildings
What a large-building radon mitigation design set contains: collection layout drawings, barrier and sealing specifications, vent routing, and fan provisions.