This project focuses on the structural analysis of OZ
Saferooms. OZ Saferooms are continuously poured steel-reinforced
concrete structures designed to withstand natural disasters.
This project will assist Zagorski Forms Specialists, Inc. by
providing them with structural analysis and experimental impact
testing data to help validate the structural integrity of the OZ Saferoom product. The scope of
the project will include the design of a sensor package which is
capable of measuring the deflections associated with an
experimental test of an OZ Saferoom. Furthermore, finite
element analysis of an existing OZ Saferoom, as well as other
specified structures will be delivered to analyze their
stability after being subjected to tornado-like conditions.
Safe rooms are emergency occupancy
structures designed to provide occupants a high probability of
protection from injury or loss of life resulting from the
forces, debris impacts, and other effects that are generated by
tornados. More than 1,200 tornados have been reported each
year since 1995. Since 1950, tornados have caused an average of
89 deaths and 1,521 injuries. Oz Saferooms are concrete
structures built with no joints or seams designed to withstand
natural disasters. The OZ Saferoom shown below was located in
Moore, Oklahoma and survived the passage of an F5 tornado on May
Figure: OZ Saferoom after Tornado
These structures are made of concrete with a minimum of 5,000
psi compressive strength, and have 8 in. thick walls, a 12 in.
thick ceiling, a 12 in. foundation and a sliding entry door made
of 12-gage steel with three-quarter inch plywood on each side.
Zagorski Forms Specialists, Inc. manufactures OZ Saferooms. The
company, headquartered in Rochester, NY has installed 53 safe
rooms during the time period from 2000 to 2004. These
structures have been built in New York, Oklahoma, and Texas.