Filler beam assembly

A formwork structure comprising:

• a filler beam assembly comprising:
• a beam comprising:
• a first end and a second end distal to the first end;
• a first lip formed on one side of the beam and adapted to accommodate one of a timber runner or a Polyurethane (PU) insert;
• an additional lip disposed below the first lip;
• a first end piece adapted to be disposed on other side of the beam, wherein the other side is a side opposite to the one side having the first lip and the additional lip, and wherein the first end piece is fastened to the other side of the beam by a screw-nut mechanism;
• and
• a second end piece adapted to be disposed on the other side of the beam and adjacent to the second end, wherein each of the first end piece and the second end piece are fastened to the other side of the beam by the screw-nut mechanism;
• and
• a drop head assembly comprising a top plate adapted to be in contact with one of the first end and the second end of the beam, the top plate comprising an interface edge to be in contact with a respective drop head interface edge, wherein the drop head interface edge is formed to complement the interface edge of the top plate.