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International Journal of Impact Engineering 100 (2017) 131138 Contents lists available at ScienceDirect International Journal of Impact Engineering journal homepage: /locate/ijimpeng Experimental investigation into the force propagation velocity due to hard impacts on reinforced concrete members TaggedPD2XPhilipX IsaacD3X*X , D4XAntonyX DarbyD5X,X D6XTimX IbellD7X,X D8XMarkX EverndenD9X X TaggedPDepartment of Architecture and Civil Engineering, University of Bath, Bath, BANES, UK TAGGEDPA R T I C L E I N F O TAGGEDPA B S T R A C T Article History: This paper presents data from a number of experiments carried out to measure the rate with which the Received 30 November 2015 force from an impact propagates from hard impacts on reinforced concrete members. It has been demon- Revised 19 September 2016 strated that a finite, measurable time exists between a concentrated impact occurring and the force being Accepted 20 September 2016 experienced at the supports. The data presented in this paper shows a clear link between the span/depth Available online 2 November 2016 ratio and the velocity with which the force propagates from the point of impact and shows that this rela- tionship is non-linear. The paper concludes by discussing how this data can be related to the failure mode TaggedPKeywords: of impact loaded reinforced concrete members, which has been shown by