uses rectangular stones in discontinuous courses. Coursed ashlar uses rectangular stones of the same height in each horizontal course, but each course may vary in height. Broken rangework arranges ashlar units into horizontal courses of varying heights, which may be divided into horizontal groups at various intervals.
To remove some of the mortar from a joint to a uniform depth, before it hardens.
A permanent, erosion-resistant ground cover of large, loose, angular stone with filter fabric or granular underling.
Masonry construction using stones of irregular shape and size. A random rubble wall has discontinuous courses and may include smaller garrets, small stones used to wedge larger ones into position or fill gaps. A coursed rubble wall is more organized and built to a level course at various intervals. A squared rubble wall is built of roughly squared stones of varying size which are brought to level courses every third of fourth stone.
This is the same as common bond, with continuous horizontal joints, but the vertical joints are offset or inline.
