How this node works
Behind the stem a gravel drain wrapped in a filter, with a perforated pipe at its foot, collects the water and carries it away; weep holes through the wall let it out at the front. This is what removes the water thrust — the most dangerous and the most underestimated. The earth-side face is waterproofed to protect the concrete.
Key points
- Backfill
- Gravel drain
- Perforated pipe
- Weep hole (through)
- Waterproofing
- R.C. stem
Conceptual, language-neutral drawing for study and orientation — not an execution drawing. Dimensions and verifications belong to the designer.