Turf and peat walls

Turf walls consist of thick grass sod—say, 20 x 24 in long and 6 in thick—placed stretcher bond and held together (until the grass roots grow through) by lumber stakes, or even steel reinforcement bars. The walls are best laid with a tapered base. They are very useful for providing a protective face for steep earth slopes at the angle of repose. The authors have used them in situations where the levels at the side of a road were higher than designed for; in such cases turf walls provide a cheap and attractive "rough" solution that uses on-site materials.

The Romans are said to have initially built part of Hadrian’s Wall as a turf wall,14 and in Scandinavia, Scotland and Ireland a similar technique uses peat walls. In Iceland, ...

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