ASME B89.3.7-2013 pdf free

ASME B89.3.7-2013 pdf free.Granite Surface Plates.
bow: the condition of a surface plate where the middle of the plate is higher or lower than the two ends.
flatness: the condition of a surface or derived median plane having all elements in one plane.
grade: the classification of a surface plate according to the flatness and repeat reading tolerance of the work surface. (This Standard covers three grades: AA, A, and .)
i,,serts: typically made of metal (usually stainIes steel, to prevent rusting) and are “plugs,” usually predrilled and tapped to various thread diameters and pitches, and are epoxied into a granite surface plate. They can also be furnished as a “solid” insert — no predrilling or tapping. Threaded inserts allow for hold-down capabilities and fixturing on a granite surface plate.
ledge: an undercut made along the sides or across the ends (or both) of a surface plate.
repeat reading: a measure of flatness over localized areas of a surface plate. This measure is usually obtained using a n?peat reading gage (see following definition) that measures height variation of the surface plate from a reference established by the base of the repeat wading gage. The range of readings taken with a repeat reading gage represents local deviation from flatness over the area sampled.
repi’at reading gap: a gage used to obtain repeat readings (see Fig. 1-3). This instrument estimates the ability to reproduce a measurement of a fixed height at any place on the surface plate. The repeat reading gage is sensitive to short wavelength variations in flatness when readings are taken over small intervals of movement of its base.
twist: the condition of a surface plate where the plate takes on the shape of a surface whose ends have been turned in opposite directions (e.g., like the shape of a propeller). The four corners of plates having this condition do not lie within the same plane. The lines characteriling opposite ends of a surface plate that exhibits twist have some relative angle between them (see Fig. 1).
3 REFERENCES
3.1 Normative References
ASME B46.1, Surface Texture, Surface Roughness, Waviness and Lay
ASME B89.6.2, Temperature and Humidity Environment for Dimensional Measurement
ASME 1389.7.3.1, Guidelines For Decision Rules: Considering Measurement Uncertainty in Determining Conformance to Specifications
ASME Y14.5M, Dimensioning and Tolerancing
Publisher: The American Society of Mechanical Engineers (ASME), Two Park Avenue, New York, NY 10016-5990; Order Department: 22 Law Drive, P.O. Box 2900, Fairfield, NJ 07007-2900 (www.asme.org)
ASTM Cl 19-99b, lerminology Relating to Dimension Stone
ASTM C615-99, Standard Specification for Granite Dimension Stone
Publisher: American Sietv for Testing and Materials
(ASTM International), 100 Barr Harbor Drive, FO.
Box C700, West Conshohocken, l’A 19428-2959
(www.astm.org)
Research Paper 1320, Physical, Mineralogical, and Durability Studies on the Building and Monumental Granites of the United States, Journal of Research of the National Bureau of Standards, Vol. 25,August 1940, PP. 161-205.ASME B89.3.7 pdf free download.