We take part in this tournament in "'creation engineering study ", our university class. We started this project last fall, lasting until now even the class is over .We named our project "Savebook", forcing on books falling from bookshelf when earthquake take place like 3.11. Not only reduce the cost and effort of recovery, it is also possible to ensure the evacuation route. We didn't have engineering knowledge when we started and it's not so many now, too. But we wanted to make something. But we wanted to make something interesting, so we did.
