Composite wall panel, wall system and components thereof, and a method of construction thereof

A composite wall system for use in forming a composite wall, the composite wall system comprising at least two panels, each of the panels including a sheet and at least one formwork member,

• each of the sheets having a first face and a second face, the first face including at least one first mounting portion, the at least one formwork member including at least one second mounting portion arranged to engage with the first mounting portion of the sheet to retain the sheet and said at least one formwork member together, the first and the second mounting portions including an arrangement of inter-cooperating preformed projections and recesses such that the preformed projections on the at least one formwork member are received into the preformed recesses in the sheet when the sheet and said at least one formwork member are assembled together to form the panel, the arrangement of the preformed projections and recesses engaging together such that the at least one formwork member and the sheet remain positively engaged together when the respective panel is erected upright for use in forming the composite wall;
• wherein the at least one formwork member has limbs extending from a body portion, the preformed projections being provided on the limbs and arranged to engage with the respective recesses set at predetermined spacing, such that at least one void is created between the body portion and the sheet;
• and
• a material applied to a space defined between adjacent said framework members, the applied material forming at least one structural pier of the composite wall in the space between the adjacent formwork members.