If you're interested in buying or selling dolls, or finding the value of a doll, use the MEMBER DIRECTORY to find a NADDA dealer in your area and to link to member web sites. Your local library or bookstore is also a good place to find a price guide on antique dolls.
The intent of the standard is to define reasonable lippage from one tile to another. When a tile is warped but within standards, all of the corners cannot be set in the plane of the adjoining tiles. Accordingly, the tolerance for variation from tile to tile includes the actual warpage of the tile.
The ANSI A137.1 standard defined allowed warpage according to the type of tile. For a paver tile (commonly used on floors) the allowable warpage is defined as follows: 5.3.1.2.6 Warpage. When measured as described in ASTM C 485, the warpage of each tile in the sample shall not exceed 1.0 percent along any edge nor 0.75 percent on either diagonal. From this formula the allowable warpage can be determined. Is allowable lippage on an installation calculated from the allowable lippage in the ...