Building Design and Construction Handbook - Merritt - Ventech!

BUILDING MATERIALS 4.31
TABLE 4.9 Physical Requirement Specification for Structural Clay Tile
Type and grade
Absorption, %
(1 hr boiling)
Avgof5
tests
Individual
max
Compressive strength, psi
(based on gross area)
Endconstruction
tile
Min
avg of
5 tests
Individual
min
Sideconstruction
tile
Min
avg of
5 tests
Individual
min
Loading-bearing (ASTM C34):
LBX 16 19 1400 1000 700 500
LB
Non-load-bearing (ASTM C56):
25 28 1000 700 700 500
NB
Floor tile (ASTM C57):
28
FT1 25 3200 2250 1600 1100
FT2
Facing tile (ASTM C212):
25 2000 1400 1200 850
FTX 9 (max) 11
FTS 16 (max) 19
Standard 1400 1000 700 500
Special duty 2500 2000 1200 1000
Glazed units (ASTM C126) 3000 2500 2000 1500
LBX. Tile suitable for general use in masonry construction and adapted for use in masonry exposed to
weathering. They may also be considered suitable for direct application of stucco.
LB. Tile suitable for general use in masonry where not exposed to frost action, or in exposed masonry
where protected with a facing of 3 in or more of stone, brick, terra cotta, or other masonry.
NB. Non-load-bearing tile made from surface clay, shale, or fired clay.
FT 1 and FT 2. Tile suitable for use in flat or segmental panels or in combination tile and concrete
ribbed-slab construction.
FTX. Smooth-face tile suitable for general use in exposed exterior and interior masonry walls and
partitions, and adapted for use where tiles low in absorption, easily cleaned, and resistant to staining are
required and where a high degree of mechanical perfection, narrow color range, and minimum variation in
face dimensions are required.
FTS. Smooth or rough-texture face tile suitable for general use in exposed exterior and interior masonry
walls and partitions and adapted for use where tile of moderate absorption, moderate variation in face
dimensions, and medium color range may be used, and where minor defects in surface finish, including
small handling chips, are not objectionable.
Standard. Tile suitable for general use in exterior or interior masonry walls and partitions.
Special duty. Tile suitable for general use in exterior or interior masonry walls and partitions and
designed to have superior resistance to impact and moisture transmission, and to support greater lateral and
compressive loads than standard tile construction.
Glazed units. Ceramic-glazed structural clay tile with a glossy or stain-mat finish of either an opaque
or clear gaze, produced by the application of a coating prior to firing and subsequently made vitreous by
firing.