ONDERLEGPLAAT VOOR HET VASTLEGGEN VAN PLAATVORMIGE BOUWELEMENTEN OP AFSTAND VAN EEN GRONDVLAK.

摘要

A support for flat building elements comprising a plate for engaging the element, having on one side four retaining members at the corners of a square. Each retaining member is divided along part of a diagonal of the square. The plate may be disc-shaped or in the form of portions of uniformly graduated thicknesses and the same cross-sectional shape. The plate may be apertured symmetrically between each pair of adjacent retaining members, the internal width of the or each aperture being slightly greater than the cross-sectional width of the respective members. Between each aperture and each adjacent retaining member, the plate may be formed with a hole for securing it or a segment thereof by a nail or screw.