Wooden support for parquet floor section

摘要

The support (3) is particularly is of wood or several layers of fibrous paper glued together. Grooves (6,7) are formed in its top and bottom surfaces (4,5). These run at right angles to the direction of the grain in the support, their depth being at least equal to half the thickness of its material.The width and depth, and also the pitch (A) are determined dependent on the adhesives and materials used. They can run in the lengthwise direction of the parquet strip, or at right angles or obliquely to it. They can be arranged in pairs or groups or at regular intervals. Those in the top and bottom surfaces can be offset from each other, typically for half the pitch.