Stackable wall spacer for supporting reinforcement in concrete constructions

A stackable wall spacer (1) adapted to be distributed randomly on a mould surface for support of a reinforcement grid (20), the wall spacer (1) comprising:

• a central opening (8) having a rim (9) configured to interact with a release mechanism operating outwards from the body of a feeder device to be used for distribution of the wall spacer;
• and
• a circumferential body section (2) having:
• an upper support surface (3) which is flat and is situated in one plane and is adapted to support the reinforcement grid,
• a base lying in another plane parallel to and spaced apart from the plane of the upper support surface (3), and
• a plurality of leg sections (4) each having side walls (19) spaced from the rim (9) and a foot (5) adapted to be placed on a mould surface for the concrete,
• wherein:
• the outer shape of the circumferential body section (2) is larger than a mesh (21) in the reinforcement grid (20) that is to be supported;
• the foot (5) of each of the plurality of leg sections (4) lies in a plane parallel to and spaced apart from the planes of the upper support surface (3) and the base, such that the plane of the base is intermediate the planes of the upper support surface (3) and the foot (5);
• each of the side walls (19) of each leg section (4) defines a continuous surface that extends from the upper support surface (3) to the foot (5), the continuous surface being inclined with respect to a vertical direction;
• and
• each leg section (4) is provided with a void (6) adapted to house a leg section (4) of another wall spacer (1), such that a plurality of wall spacers (1) can be stacked in each other with the leg sections (4) of one wall spacer (1) extending into the corresponding voids (6) of a subsequent wall spacer (1), such that each of the side walls (19) of each leg section (4) is parallel with the side wall (19) of each leg section (4) of the subsequent wall spacer (1).