Get Asce 41 13

Standard ASCE/SEI 41-17 is a primary reference for structural engineers addressing the seismic resilience of existing buildings and for building code officials reviewing such work; it also will be of interest to architects, construction managers, academic researchers, and building owners.

Tier 1 evaluation focuses on identifying potential deficiencies in existing buildings based on the performance of similar buildings in past earthquakes. The systematic procedure sets forth a methodology to evaluate the entire building in a rigorous manner.

Seismic Evaluation and Retrofit of Existing Buildings, Standard ASCE/SEI 41-17, describes deficiency-based and systematic procedures that use performance-based principles to evaluate and retrofit existing buildings to withstand the effects of earthquakes.

ASCE 41-17 is one of the design standards referenced in the Los Angeles Building Code (LABC) and the Los Angeles Existing Building Code (LAEBC) for seismic evaluation and retrofit of existing buildings. It is intended to serve as a tool for both mandatory and voluntary seismic retrofit requirements.

ASCE/SEI 7-10 American Society of Civil Engineers.

ASCE 7-10 has three wind maps, based on Risk Category I, Risk Category II, and Risk Categories III and IV, and they are based on Strength Design. ASCE 7-16 has four wind speed maps, one for each Risk Category and they are also based on Strength Design.

The ASCE 41-13 m-factor is 2.0 and CmC1C2= 0.8*1.4 = 1.1. In ASCE 41-13, the wall would be evaluated for an equivalent base shear of: V/m = 1.1*0.84W/2.0 = 0.46W.

However, ASCE/SEI 41 was developed to assess the structural performance of existing buildings. On the other hand, ASCE 7 is a prescriptive standard that has been used in design of new buildings for several decades.