PDF Formwork Plan to Clean, Layered AutoCAD DWG

Converted a vector PDF formwork plan of a multi-storey RC building back into an editable AutoCAD drawing: grids, columns, beams, slabs, dimensions and hatches on separate layers, duplicate lines removed, checked against the original sheet. Left: original PDF, right: my layered DWG at the same zoom. Sample from my own work; project details removed.