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Quoin - coing - coin =
Large square stone of
brick set at the corner
formed by two masonry
walls. Projects out from
the corner in some
cases.
Racking =
Laying or stepping back each higher masonry
course.
Raggle =
Groove or slot in a masonry unit; slot is cut
along one side to receive the edge of the
flashing. Also
reglet.
Ragwork =
Crude masonry, laid in a
random pattern of thin-
bedded, undressed stone.
Polygonal rubble which is
set on edge as exterior
facing.
Rake out - raking =
Cleaning out mortar from a joint; both fresh or
old.
Random work - random range work =
Masonry of rectangular stone not
laid in regular courses, but broken
up by the use of stones of different
heights and widths, fitted closely.
RBM =
Reinforced –Brick-Masonry.