ᐅ Gaining Usable Space by Supporting Slopes or Inclines

Hello,

To secure the slope, protect the house from moisture (rainwater), and gain usable space, we want to support the slope with a retaining wall. The wall will be built from solid bricks. We plan to embed the first brick about halfway into the foundation. The following bricks will be staggered (half brick offset) and laid, then filled on the inside with concrete/screed to ensure the wall is stable. On the inside of the wall (between the wall and the slope), we want to install a membrane that should reduce moisture penetration. Additionally, a drainage system will be installed there to help the rainwater drain better.

My questions regarding the garden wall project:

- How should we prepare the foundation for the bricks?
- Is our approach/idea realistic, or will the wall collapse after a few years?
- How deep/wide should the foundation be? Does the wall require frost protection?
- What else should we consider to ensure the wall remains stable?

Note:
The wall will be built with a "battered" slope (setback).
Dimensions:
- East side: 12.5m (41 feet) / 3m (10 feet) wide strip of soil between sidewalk and wall
- South side: 14.5m (48 feet) / 90cm (35 inches) wide strip of soil between neighbor (half carport, half walkway)
- Connection/batter: 4m (13 feet)
Maximum wall height: 6 bricks → 120cm (47 inches) total height, effective height about 105cm - 110cm (41 inches - 43 inches)

Bricks:
Dimensions: 50cm x 25cm x 20cm (inside hollow) (20 inches x 10 inches x 8 inches)

I would appreciate any advice on the construction process.

Hello,

we have given this project some more thought and have decided to green the areas. ;-)