Meristem RETAIN
A detention assembly with plants on it. Sized to a hydrograph, not a depth.
- Depth
- 8" (205 mm) total build-up
- Saturated load
- 55 lb/ft² saturated
- Annual retention
- 92%
- Max slope
- to 1:12
- Wind
- ANSI/SPRI RP-14 tested to 100 mph
- Fire
- ASTM E108 Class A
- Planting
- Sedum-forb mix selected for wet/dry cycling
- Maintenance
- 2 visits/year + annual outlet check
- Install rate
- 3,000 ft²/day, 3-person crew
- Combined sewer overflow districts
- Stormwater credits + fee reduction
- Sites with no room at grade
If a drawing in your set names one of these, it is asking for Meristem RETAIN.
AquaBase 80AB-80
Now sized to a release rate. Detention depth is a design output, not a SKU.
V-Retain CellVRC
Cell unchanged. Flow-control outlet is now part of the assembly.
11 documents cover this system
CSI 3-part specification — Meristem RETAIN
Specification · v4.3
Typical assembly details — all systems
CAD + BIM · v9.0
Drain, penetration and expansion-joint details
CAD + BIM · v9.0
Load table — saturated and dead loads, all systems
Performance data · v3.1
Stormwater performance report — RETAIN
Performance data · v2.0
Wind uplift test report — ANSI/SPRI RP-14
Performance data · v2.2
Fire classification certificate — ASTM E108
Performance data · v1.4
Pre-installation checklist + membrane sign-off
Installation · v3.0
Maintenance schedule + plant establishment care
Maintenance · v5.1
Warranty registration form
Warranty + safety · v4.0
Safety data sheet — engineered growing media
Warranty + safety · v2.1
Meristem TERRACE