Through an array of illustrative examples, it is shown that the new recommendations reflect much more accurately the behavior of structural steel components from the onset of damage through the loss of their load carrying capacity. The proposed equations also include information related to the associated modeling uncertainty of each of the input model parameters. For each structural component of interest a set of equations is developed to predict their first-cycle envelope and monotonic backbone curves that can be directly used in nonlinear frame analysis. These recommendations are based on a consistent methodology that takes advantage of unique experimental data as well as insights from detailed finite element analyses. During the project, ASCE/SEI 41-13 (2014) completed committee review and was published in 2014. f ef f eg f eh f ei f ej f ek f el f em f ef f eh f ej f el f en g ef g eh g ej <7 3 0 & 1 9 ' 0 0 < 1 9 3))))). As part of the ATC-114 project, new modeling recommendations are proposed for several structural steel components of new and existing MRFs including, steel beams, columns, the beam-to-column web panel zone, column bases and column splices. 1 ASCE STANDARD ASCE/SEI 41-06 1 1 J 1 l 1 1 American Society of Civil Engineers 1 Seismic Rehabilitation of Existing Buildings This. APPLICABILITY OF ASCE/SEI 41-13 AND ASCE/SEI 41-17 TO THIS STUDY This project was initiated using ASCE/SEI 41-06 (2007) as its basis. The findings from these tests suggest that the current ASCE-41-13 nonlinear component models do not adequately simulate the steel MRF component behavior. Numerous experiments on steel moment-resisting frames and their components have been conducted over the past two decades. ASCE 41 06 : 2007 SEISMIC REHABILITATION OF EXISTING BUILDINGS ASCE Collaborate My participation in local ASCE activities and committees has allowed me to develop skills that keep me advancing professionally. Created in 1999, the Environmental and Water Resources Institute (EWRI) is an Institute of the American Society of Civil. Nonlinear static and dynamic analysis is utilized by engineers to evaluate the seismic behavior of new and existing structures in the context of performance-based earthquake engineering. About ASCE/EWRI Founded in 1852, the American Society of Civil Engineers (ASCE) represents more than 146,000 members of the civil engineering profession worldwide, and is America’s oldest national engineering society. ASCE-41 permits as many as four analytical procedures to estimate seismic demands: Linear Static Procedure (LSP), Linear Dynamic Procedure (LDP), Nonlinear.