Compound walls are often built last and cheapest, and they show it: leaning panels, cracks at every pillar, and damp at the base. A little structure prevents all three.
Typical Construction
| Part | Common practice |
|---|---|
| Footing | Strip footing, or isolated footings under pillars, on firm soil |
| Plinth beam | RCC beam linking pillars at ground level |
| Pillars | RCC, about 230 × 230 mm, every 2.5 – 3.5 m |
| Panels | 230 mm or 150 mm solid block, fly ash or red brick |
| Coping | Sloped concrete or stone cap to shed water |
| Movement joints | On long walls, at intervals |
| Plaster | External grade, cured |
Materials Compared
| Material | Suitability |
|---|---|
| Solid concrete blocks | Very good — robust, economical |
| Fly ash bricks | Good |
| Red bricks (well burnt) | Good |
| AAC blocks | Less suited — softer face, more vulnerable to impact and weather |
Quantities per Running Metre (indicative)
For a 1.8 m high, 230 mm brick or block wall with a pillar every 3 m:
| Item | Approx. per running metre |
|---|---|
| Masonry volume (above plinth) | about 0.4 m³ |
| Concrete in footing, plinth beam and pillars | about 0.15 – 0.25 m³ |
| Steel in pillars and plinth beam | about 8 – 12 kg |
Your drawings give exact figures; these help check a quote.
Avoiding Cracks and Leaning
- Footing on firm ground, deeper on expansive soil.
- Plinth beam to tie pillars and spread load.
- Closer pillars for taller walls.
- Drainage so water does not pool at the base.
- Movement joints on long, straight runs.
- Cure masonry and plaster.
Gates and Rules
Gate pillars carry gate weight and swing loads — make them larger and well founded. Check permitted wall height, gate positions and any rules on walls facing the road with your local authority or layout conditions.
The Short Version
Footing, plinth beam, pillars every 3 m, robust masonry, coping and drainage. A compound wall built like a small structure lasts as long as the house.
