The new 2009 International Building Code® addresses all buildings, except one- and two-family dwellings and townhouses up to three stories high. This extensive code features time-tested safety concepts, structural, fire- and life-safety provisions such as means of egress, interior finish requirements, comprehensive roof provisions, seismic engineering provisions, innovative construction technology, occupancy classifications and the latest industry standards in material design. It is founded on broad-based principles that make possible the use of new materials and new building designs.