Page 67 - Design of Reinforced Masonry Structures

2.20 CHAPTER TWO

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tiles are usually flat, but vary in size from ⁄ 2 in. to more than 6 in. They are available in a
variety of shapes; rectangular, square, and hexagonal being the more predominant forms.
Ceramic tiles are used for both wall and floor coverings. They are laid on a solid backing
by means of mortar or adhesive. They are usually applied with the thinnest possible mortar
joints; consequently, dimensional accuracy of tiles is of greatest importance. Classification
of glazed tiles includes grade and type. Grade S (select) units are used with comparatively
narrow mortar joints, whereas Grade SS (selected size) are used where variation in face
dimensions must be very small. Both grades may be produced in either Type I or Type II.
Type I units have only one face glazed; Type II have both opposite faces glazed.
Ceramic glazed tiles are also available in cellular forms (Fig. 2.14) that are similar to
hollow bricks and can be reinforced and used as load-bearing elements. ASTM C212-00:

FIGURE 2.14 Glazed structural units. (Courtesy: BIA.)