Nehrp Recommended Provisions National Earthquake Hazards Reduction Program For Seismic Regulations For New Buildings And Other Structures Fema 450

The 2003 edition of the NEHRP Recommended Provisions contains several significant changes, including: a reformatting to improve its usability; introduction of a simplified design procedure, an updating of the seismic design maps and how they are presented; a modification in the redundancy factor; the addition of ultimate strength design provisions for foundations; the addition of several new structural systems, including buckling restrained braced frames and steel plate shear walls; structures with damping systems has been moved from an appendix to a new chapter; and inclusion of new or updated material industry reference standards for steel, concrete, masonry, and wood.