Abstract: A kneeling posture support assembly is provided comprising a pair of knee supports having attachments whereby the knee supports can be attached to the legs of a user and an intermediate body support. Each of the knee supports and the body support are free standing in the operative position independently of each other on a supporting surface, with each knee support being tethered, directly or indirectly, to the body support and the other knee support by means of one or more elongate flexible connectors. The connectors permit limited movement of the knee supports relative to each other in both horizontal and vertical planes such that a part of any such limited relative movement of the knee supports is operatively transferred by way of the one or more elongate flexible connectors, to the body support that therefore follows the knee supports.

Abstract: The invention provides a grout pack restraining system, comprising a plurality of elongate elements shaped to extend about a grout pack and which are characterized in that they are configured to control circumferential expansion of the grout pack beyond the expansion permitted through material yield of the elements. In one embodiment the rings of different diameter are secured about the grout pack. In a further embodiment the rings are configured to be circumferentially expandable are secured about the grout pack.