Underground Storm Shelters Jenks
On May 3, 1999 an EF5 tornado struck Moore, OK that had record wind speeds of over 300mph. After that 1999 tornado, we realized that not everybody in Oklahoma had the space to put in a septic tank shelter. People had very, very limited choices with respect to protecting their families from tornadoes. At that time, underground storm shelters in Jenks were not installed in half the houses they are now.
Immediately thereafter, the first generation of this in-garage, underground storm shelters was born. This allowed for the masses to install a shelter underground, in their house for tornado protection. Homes throughout Jenks were installing these underground storm shelters to protect themselves.
This was a good thought for sheltering people and keeping them out of the weather but it had its downfalls. It stuck up 4 to 5 inches off the garage floor, had poor ventilation, rusted out quickly, and had steep, awkward ladders for entry and exit. Many of these underground storm shelters in Jenks weren’t installed correctly and have really floated up from the ground because of buoyancy and ground water. We took note, and made history.
In 2003, the FlatSafe Tornado Shelter was invented. We engineered our underground storm shelters, to be set up in-garage to take care of the destructive forces connected with tornadoes that would give our Jenks customers peace of mind and supply them with the highest probability of survival in an EF5 tornado.
Through extensive research, we identified vacuum, air pressure, and debris as the most damaging forces involved with tornadoes.
With possible wind speeds of 300+miles in mind, we realized that vacuum is one of the most damaging forces which tornadoes create. It doesn’t require much vacuum pressure, with regard to psi, to cause structural damage. To counter vacuum forces, FlatSafe made a lid system which allows for 360o of venting for rapid equalization of pressure within the shield. By promoting the pressure inside of the shelter to quickly equalize with the outside pressure, the secured lid system is held securely closed.
We recognized that 300+mph winds can cause tremendous damage to anything it slams against so we sought to reduce our exposed surface area as far as possible. The patented FlatSafe lid system only sticks up 1/4″, so there’s very little surface area affected by horizontal wind speeds.
Since FlatSafe Tornado Shelters are under ground, it’s from the way of horizontal winds and the debris thrown and circulated by it. So the only debris to worry about is falling debris. We knew that all debris falls at the same speed and only mass determines its impact. Our 1/4″ plate lid is larger than the shelter opening and is reinforced to absorb and withstand any falling debris which may land squarely on it. We made it to provide more than sufficient ventilation (breathing) even after impact.
FlatSafe Underground Storm Shelters
The FlatSafe Tornado Shelter was engineered to meet all of the regulations and criteria which were available. It was also engineered with corrosion protection options to ensure that the shelter would last as long as the home and the homeowner. FlatSafe supplied the original single-lid design and was the first low-profile, in-garage shelter given. The lid is 1/4″ thick steel plate with added structural tubing to provide additional strength. The single-piece lid is bigger than the frame of the saferoom opening and sits over the framework, not down within the frame.
Our lid system is MUCH stronger than the typical 2-piece lid system provided by everyone else and provides more than adequate ventilation to the occupants. FlatSafe was the first to encase shelters in ready-mix concrete to counteract buoyancy and floatation. The FlatSafe shelter design doesn’t take away from a homeowner’s usable garage floor area.
FlatSafe below ground storm shelters allow for easy entry and exit, provides a powerful system for exiting with debris onto the lid, and leaves Jenks residence with the reassurance that they have an extremely large probability of surviving a direct hit from an EF5 tornado.
Read Real Testimonials From Tornado Survivors
Since 2003, FlatSafe has established itself as the innovator in the in-garage, low profile, under ground storm shelters business. Several FlatSafe shelters have taken a direct hit from an EF5 tornado and our clients rave about the protector performance and their choice to buy. FlatSafe continues to push for new innovation and continues to push for more stringent and comprehensive codes to protect the families in and around Jenks.