The ICS SIP is designed to withstand Category 4 hurricane winds which can generate 155 mph winds.  These are winds that can create extensive damage to the building structure and the resultant devastation that folks in Florida and the southern states have experienced and know all too well.  The ICS SIP has structural characteristics that are similar to a steel I-beam.The skins act like the flanges of an I-beam, and the polyurethane core provides the web.  This assembly provides the strength that test reports have shown to be three times stronger than frame construction and thereby provide the strengths to withstand hurricane-force winds.  SIP homes have also shown superior strengths in withstanding earthquakes such as that of Kobe, Japan and Northridge, California.