Structural Tie-Downs and Uplift Resistance

What happens here

The presenter demonstrates how structures are tied down to resist forces like strong winds or seismic activity. For the wood-framed 'USA' model, he uses a trowel to show hurricane ties connecting the rafters to the top plate and anchor bolts securing the base of the wall to the foundation. This system ties the entire structure down. For the cavity wall 'EUROPE' model, he indicates that it relies on its sheer weight and strapping to resist roof uplift, and mentions that masonry walls can be more vulnerable to seismic activity. He demonstrates the limited connection of the roof to the block wall by pushing on the roof.

Goal: Demonstrate methods of tying down structures and resisting uplift forces.