Below-Grade Waterproofing
Revision 4
· SynC Standards Team — Specifier, SynC (SynC Platform Team / Platform Standards) ✓ Official
· Jun 11, 2026
+2
−2
Migrate datasheet deferrals to drawing_ref + default: deferred
Tag changes
−Below Grade−Concrete−Foundations−Slabs−Waterproofing
---
title: Below-Grade Waterproofing
…177 unchanged lines
label: Design Groundwater Elevation
type: text
−drawing_ref: true
−default: "Per geotechnical report — see civil drawings"
+drawing_ref: "geotechnical report"
+default: deferred
```
…983 unchanged lines
## Backfilling before flood test and ELD is the single most damaging construction sequencing error in below-grade waterproofing because it converts a correctable deficiency into an excavation-and-reconstruction problem. {note}
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