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Nottingham, United Kingdom

Lloyd-Jones R.,Front Street Consulting
Polar Record | Year: 2011

Earlier research (Lloyd-Jones 2004, 2005) based on Admiralty records in the National Archives (TNA) at Kew revealed much previously undiscovered history of the marines and ratings who sailed with Sir John Franklin on his disastrous 1845 northwest passage expedition. These records, mostly derived from muster and pay books, can often be followed up using other contemporary documents such as parish registers. Now that much more, notably 19th century census information, is available online, further interesting details of many of those men's lives have come to light. Copyright © 2011 Cambridge University Press. Source

Sear D.A.,University of Southampton | Bacon S.R.,Front Street Consulting | Murdock A.,University of Southampton | Doneghan G.,University of Southampton | And 3 more authors.
International Journal of Nautical Archaeology | Year: 2011

This paper presents the results of an integrated historical and geophysical survey of a medieval town lost through cliff recession and coastal inundation. Key objectives included evaluating historic maps in supporting the relocation and identification of major buildings, and applying integrated multibeam, side-scan and sub-bottom profiling to determine the location and extent of archaeological remains. The results demonstrate that cartographic sources from 1587 onwards can be a reliable source of data to guide geophysical survey. Integration of historical mapping with geophysical data enabled identification of the remains of two medieval structures, and the tentative identification of two others. © 2010 The Authors © 2010 The Authors. International Journal of Nautical Archaeology © 2010 The Nautical Archaeology Society. Source

Sarkisian M.P.,Front Street Consulting
Structure and Infrastructure Engineering | Year: 2015

Dr. Khan’s contributions to the design of tall buildings have had a profound impact on the profession. Khan had a unique understanding of forces, materials, behaviour, as well as art, literature and architecture. Long before there was widespread focus on environmental issues, Khan’s designs promoted structural efficiency and minimising the use of materials resulting in the least carbon emission impact on the environment. Khan was interested in the performance of structural systems over an expected life; recognising a building’s life cycle and issues of abnormal loading demands, he developed concepts to apply to severe wind environments as well as early concepts of seismic isolation of structures. These system ideas have led to the development of other concepts which have yielded buildings much taller than those considered by Khan. His ideas have inspired others to expand the possibilities in tall building design, life cycle engineering and the effects of the structures on the environment. © 2015 Taylor & Francis Source

Peric D.,Kansas State University | Miletic M.,Kansas State University | Shah B.R.,Front Street Consulting | Esmaeily A.,Kansas State University | Wang H.,Ningxia University
Engineering Structures | Year: 2016

While Cross' method enabled scientifically based structural design of integral bridges (IB) a similar progress in understanding and analyzing the relevant complex soil structure interaction has not been made yet. This hampers a wider adoption of IB systems, whose geo-structural system inherently brings multiple sustainability and performance benefits to transportation infrastructure. To this end, a full 3D finite element model of an existing three-span integral bridge was assembled and subjected to a combined thermal and gravity loads. The bridge superstructure consists of the two sets of concrete piers, two abutments, and fourteen HP steel piles (seven at each abutment), whose strong axis of bending is oriented parallel to the longitudinal direction of the bridge. Upon a successful validation and the verification of the computational model, several loading scenarios simulating different amounts of temperature increase in the presence of different soils adjacent to the abutment were simulated. Further analyses indicated that effects of the compaction level of the soil adjacent to the abutments, and of a magnitude of the thermal load on the substructure are opposite from the effects of these agents on the superstructure. © 2015. Source

Butler L.,Front Street Consulting | Tighe S.,University of Waterloo | West J.,University of Waterloo
Transportation Research Record | Year: 2013

This paper presents guidelines for using recycled-concrete aggregate (RCA) as a full or partial replacement for natural coarse aggregate in new concrete (RCA concrete). Several international standards and guidelines for the use of RCA in concrete are reviewed and contrasted to identify areas in which further development is required. The main results of an extensive experimental research program by the authors are summarized here to provide a basis for the development of a framework for using RCA in structural concrete. Several RCA performance classes are proposed, each with a specific set of requirements and suitable applications. The proposed performance classes define further requirements and guidance for the use of RCA beyond the requirements of Canadian Standards Association A23.1 and ASTM C33. The authors propose a detailed decision tree to allow engineers, concrete producers, aggregate suppliers, and contractors to assess whether a particular RCA source is suitable for use in reinforced concrete or plain concrete or as fill material. Source

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