Roofs Built To Resist Earthquakes

This can be done with profiled steel cladding together with a layer of added insulation.

Roofs built to resist earthquakes.

The roof of an earthquake resistant building must be as light as possible too. It can have a roof slope between 3 and 15 degrees. One way to resist ground forces is to lift the building s foundation above the earth. Earthquake resistant or aseismic structures are designed to protect buildings to some or greater extent from earthquakes.

In south florida all roofs must be built to withstand 146 mph wind forces and by using metal ties strapping and other reinforcement most builders use wood to meet this standard. Gable roofs are generally more common because they are cheaper to build. While no structure can be entirely immune to damage from earthquakes the goal of earthquake resistant construction is to erect structures that fare better during seismic activity than their conventional counterparts. Here are some of the methods used to help buildings withstand earthquakes.

Create a flexible foundation. When designing earthquake safe structures the first consideration is to make the highest bit the roof as light as possible. Wind forces on a roof tend to be uplift forces. This can also have double skin with spacers and insulation.

This is best done with profiled steel cladding on light gauge steel zed purlins. Kelvin doerr director of engineering and technical services at fox blocks says basically it comes down to stronger thicker structural members with better connections. A 30 degree roof slope has the best results. Earthquake damage caused by the building having no structural framing where the upper floors and roof are simply built on to masonry walls.

Once these walls shake a bit the entire strength is lost and the building will collapse or pancake during an earthquake.