NEHRP Recommended Revisions to ASCE/SEI 41-17 Seismic Evaluation and Retrofit of Existing Buildings (FEMA P-2208)

This resource presents NEHRP-recommended revisions to ASCE/SEI 41-17 for the seismic evaluation and retrofit of existing buildings, with a focus on concrete structural wall stiffness, modeling guidance, and flexure-controlled provisions. It addresses deficiencies in current modeling parameters, proposes updated provisions for flexure-controlled walls, and introduces a new methodology for determining foundation moment capacity. The document also restructures structural wall chapters and adds new provisions for wall sliding mechanisms, modeling techniques, and impact-resistant materials.