Timberize TOKYO is a virtual project to pursue the possibilities of wooden architecture. In order to reduce the scale of urban functions after the Olympics end, we took advantage to use timber as the material for the deck.First of all, we developed a system that can locate masts with topology and arrange decks automatically. CLT panel is used as deck and formed 2.5 m width for reusing as building material after finishing Olympic games. Decks are placed in order not to disturb the transportation in the bay area where logistics industry is based in. To achieve this proposal, we suggested a versatile design tool with the system which is consistent from processing timber to reusing them.