The full nuclide chart is around 8m long and contains 29,618 LEGO pieces! To build your own version of the full nuclide chart, you can look at the documents below. The first document gives an overview of how many LEGO bricks of each colour you would need. The second document shows how each of the plates used to form the base of the chart are laid out.
There are 40 plates used in total for the complete grid. Each of these baseplates can hold 12 by 12 4x4 towers on them. You can see the layout of the full chart, and a breakdown of the costs, in a Google Spreadsheet, and some additional information below about how all the individual plates fit together.