4' × 5" × 12" (turned, 5" × 4" × 12")
4' × 12" × 12"
6' × 12" × 12" (sometimes 6" × 5" × 12")
8' × 5" × 12"
8' × 12" × 12"
[Illustration: Fig. 59. Stock Tile Units]
When ordering the 5" × 12" tile shapes, which are laid on the side,
the contractor should state that the usual allowance of 6-inch
and 9-inch length cuts be included for use in piers and other
narrow places, so as to reduce the cutting of tile on the job to
a minimum; also, enough half and full closures should be ordered
for use at window and door openings. See Fig. 59 and Hollow Tile
Problem on opposite page. When it comes to the case of the 12" ×
12" tile, it is an easy matter for bricklayers to split off one or
more cells to get the proper shapes for closures, but the usual
allowance of half-lengths should be ordered. Enough 1-inch tile
slabs should be included for use in leveling up the wall for joist
bearings.
Tile is calculated in terms of pieces, and to arrive at the number
required, use the same square feet dimensions you would for common
brick backing and multiply by the proper one of the following
coefficients: