Abstract: The present invention relates broadly to a rail joint assembly and relates particularly, although not exclusively, to a play apparatus incorporating said joint assembly and a method for constructing a play apparatus comprising a framework structure of interconnected rail members and a plurality of said joint assemblies. The play apparatus comprises a framework structure including interconnected rail members and a plurality of joint assemblies each arranged to interconnect at least a pair of the rail members to construct the framework structure. Each of the joint assemblies includes a structural hub configured for detachable connection to an end of one of the rail members and a joint housing mounted about the structural hub and including one or more bracket anchorages for securement of one or more panel brackets to which a panel of the play apparatus is removably mounted.