But that would have missed the point.

That’s why Dr Falk and his team of engineers have been using an air cannon to fire, at 100mph, 12ft long, 15-pound southern pine 2 x 4s into specially designed walls made of some of the cheapest wood available.

The cannon mimics the forces of an F5 tornado with 250mph winds. The lumber used to make the walls of the shelter is of such low quality, Dr Falk had to specially order it.

The goal is to create an economical wood based shelter that can be easily constructed in a basement or garage by anyone halfway skilled with a hammer and saw.