Patent ID: 8793953

Claim:
A stay-in-place form-work for casting a structure from concrete or other curable construction materials, the stay-in-place form-work comprising: a plurality of elongate panels connected in edge-to-edge relationship to define at least a portion of a perimeter of the form-work, the plurality of panels comprising a first panel connected via an edge-to-edge connection to a second panel, the first panel comprising a first edge component and the second panel comprising a second edge component, the first and second edge components engaging one another; and a clip comprising first and second arms, the clip engaging the first and second edge components in a locked configuration wherein the clip is resiliently deformed such that the clip exerts restorative deformation forces against the first and second edge components to thereby maintain the edge-to-edge connection in the locked configuration; wherein the first edge component comprises a projection, the second edge component comprises a receptacle and the engagement between the first and second edge components comprises an extension of the projection into the receptacle.