초록 ▼

A construction element for foundation drainage has an integral, flexible, and substantially water-impervious panel lying generally in a plane and formed with respective arrays of inner and outer bumps to opposite sides of the plane. The outer bumps form outwardly open outer flow channels on the oute

A construction element for foundation drainage has an integral, flexible, and substantially water-impervious panel lying generally in a plane and formed with respective arrays of inner and outer bumps to opposite sides of the plane. The outer bumps form outwardly open outer flow channels on the outer face. Normally the panel is applied to a vertical foundation wall with the inner bumps bearing against the wall and the outer passages vertical and opening outward away from the wall. The inner bumps and outer bumps are offset to one another in the plane in two perpendicular directions. Thus the channels communicate also in these two directions and the element can be rolled up. A water-pervious and rigid filter sheet overlies the outer bumps, is spaced outward from the plane, and outwardly closes the channels so that water can filter through the sheet and flow down the channels.

대표청구항 ▼

In combination with a vertical foundation wall, a construction element for draining said vertical foundation wall, the element comprising: an integral and substantially water-impervious panel of generally uniform thickness and lying generally in a central plane and formed with respective arrays of i

In combination with a vertical foundation wall, a construction element for draining said vertical foundation wall, the element comprising: an integral and substantially water-impervious panel of generally uniform thickness and lying generally in a central plane and formed with respective arrays of inner and outer bumps generally uniformly distributed over the panel to opposite sides of the central plane and having respective bases defining inner and outer planes flanking and offset respectively horizontally inwardly and horizontally outwardly from the central plane, the outer bumps forming outwardly open outer flow channels on the outer face, the panel being applied to the vertical foundation wall with only the bases of the inner bumps bearing against the wall at the inner plane at vertically and horizontally offset locations thereon and the outer channels vertical and opening outward away from the wall, the inner bumps and outer bumps being offset to one other parallel to the planes in two perpendicular directions, the channels communicating also in these two directions, the element being sufficiently flexible that it can be rolled up; and a water-pervious and rigid filter sheet overlying the panel at the outer plane, engaging the panel only at horizontally and vertically spaced locations at the bases of the outer bumps and outwardly closing the channels, whereby water can filter through the sheet and flow down the channels.