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Vitrified =
Glassy in appearance. A fired clay that has been
fused together. Commonly used on the face of
terra cotta units.
Voids =
Openings, cells, cores, or holes in a masonry
unit.
Water Retentivity =
The ability of mortar to hold water to prevent
rapid loss to masonry units with high degree of
absorption or suction.
Water Table =
A horizontal exterior ledge on a wall, pier,
buttress, etc.; often sloped and provided with a
drip molding to prevent water from running
down the face of a structure. Also
groundwater
level.
Web =
Solid wall section between cores in a masonry
unit; commonly used to describe the solid wall
between concrete block cells.
Weep Holes =
Openings in masonry joints left at the base of a
masonry wall so moisture can escape.
Winning =
Digging and mining of clay or shale.
Wythe =
One masonry unit in thickness.
END CHAPTER IV