Square rubble masonry

Square rubble masonry consists of ashlar stones set in mortar, that make up the outer surface of a wall.

History

The Sadd el-Khafara dam (2900-2600 BC) in Wadi Al-Garawi near Helwan in Egypt, is 14 meters high, filled with rubble masonry, and clad in unmortared stepped ashlar stones. The Greeks called the technique of constructing two parallel walls

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