Puranam A.YCorney S.RElwood K.JHenry R.SBull D.AISHWARYA YERRAPOTU PURANAM2022-03-222022-03-22202108893241https://www.scopus.com/inward/record.uri?eid=2-s2.0-85116833992&doi=10.14359%2f51732822&partnerID=40&md5=ceba939461b5334e5c2391c469bee3c5https://scholars.lib.ntu.edu.tw/handle/123456789/597887Past research has indicated that precast concrete hollow-core floors in buildings are susceptible to non-ductile failure modes when subjected to earthquake deformations. While this research has led to the development of more robust connection details suitable for hollow-core floors in new buildings, the existing building stock with hollow-core floors in New Zealand is still at risk and needs to be assessed. Damage to buildings containing hollow-core floors in Wellington, New Zealand, during the 2016 Kaikoura Earthquake prompted the need to better understand the behavior of hollow-core floors and enable those with limited drift capacity to be retrofitted or replaced. Based on tests described in a companion paper, models are developed for three potential failure modes: Loss of seating (LoS), positive moment failure (PMF), and negative moment failure (NMF). Implementation of these models in the New Zealand Seismic Assessment Guidelines is discussed. Applying the Guidelines to a database of 112 existing buildings with hollow-core floor units in Wellington indicates that the most likely mode of failure is loss of seating. ? 2021, American Concrete Institute.Floor diaphragmHollow-core floorsPrecast concreteSeismic assessmentBuildingsEarthquakesFloorsRisk assessmentBuilding stocksConnection detailsDuctile failuresFloor diaphragmsHollow core floorsIn-buildingsNew zealandPre-castSeismic Performance[SDGs]SDG11journal article10.14359/517328222-s2.0-85116833992