Building Stone Condition Monitoring Using Specially Designed Compensated Optical Fiber Humidity Sensors

This paper presents the design and implementation of a novel optical fiber temperature compensated relative humidity (RH) sensor device, based on fiber Bragg gratings (FBGs) and developed specifically for monitoring water ingress leading to the deterioration of building stone. The performance of the sensor thus created, together with that of conventional sensors, was first assessed in the laboratory where they were characterized under experimental conditions of controlled wetting and drying cycles of limestone blocks, before being employed “in-the-field” to monitor actual building stone in a specially built wall. Although a new construction, this was built specifically using conservation methods similar to those employed in past centuries, to allow an accurate simulation of processes occurring with wetting and drying in the historic walls in the University of Oxford.

Cold-formed steel sections with web openings subjected to web crippling under two-flange loading conditions - Part II: Parametric study and proposed design equations

A parametric study of cold-formed steel sections with web openings subjected to web crippling was undertaken using finite element analysis, to investigate the effects of web holes and cross-section sizes on the web crippling strengths of channel sections subjected to web crippling under both interior-two-flange (ITF) and end-two-flange (ETF) loading conditions. In both loading conditions, the hole was centred beneath the bearing plate. It was demonstrated that the main factors influencing the web crippling strength are the ratio of the hole depth to the flat depth of the web, and the ratio of the length of bearing plates to the flat depth of the web. In this paper, design recommendations in the form of web crippling strength reduction factors are proposed, that are conservative to both the experimental and finite element results.

Recruitment and capacity-building challenges in participatory research involving young people in Northern Ireland

Consulting young people in social research is increasingly popular and is not confined to their recruitment as participants but extends to the design, delivery and dissemination of research. In this chapter we explore the recruitment and capacity building challenges involved in working with young people as researchers. We will introduce some of the theoretical issues around young people’s participation. Drawing on experiences from four separate participatory research projects with young people in Northern Ireland, we will highlight some of the difficulties encountered and give some practical approaches to managing the research process. Strategies for recruiting and training young researchers will be considered and we also reflect on what the benefits of young people’s involvement can be; not only enhancing the research process but also empowering young people and creating the potential for social agency.

Climate Adaptation: The future of extra-care housing for the elderly in the United Kingdom.

This paper describes the result of a project to develop climate adaptation design strategies funded by the UK’s Technology Strategy Board. The aim of the project was to look at the effects of climate change in the distant future (2080) on a vulnerable group such as older people with special needs and see how architectural design strategies and technologies may be used today to help mitigate problems ahead caused by climate change.
Older people are the most vulnerable sector of society and are particularly at risk in extreme weather, either excess cold in winter or continual high temperatures in summer. In the UK it is predicted that average temperatures may rise by as much as 8 degrees in Summer by 2080 and there will be a 20% greater chance of extreme weather events. This will place extreme stress on the building stock which is designed for today’s mild maritime climate.
The project took a current proposal for an extra-care home for the elderly designed to 2010 regulations and developed a road map to 2080 using climate models developed by the UK Meteorological Office. This allowed the current design to be assessed using future climatic data, proposals for improvement of the scheme to be made within existing constraints and also a new scheme to be developed from first principals using this data, and projections of new technologies that will be available. By comparing these schemes, the approach allowed a reassessment of the initial scheme, and allowed a new design to be developed that offered a more flexible solution incorporating future retrofit which allows new renewable technologies for heating, cooling and water storage to be added at a later date.

Ratoath College - Building, 2007, 2015

Awards:
2007 Opus Architecture and Construction Awards - Highly Commended
2008 Architectural Association of Ireland - Selected for Exhibition
2008 RIAI Best Educational Building
2009 RIBA - Short listed International Award
2009 Imagine Inspirational School Design Compendium
2010 Irish Nomination to OECD Compendium of Exemplary Educational Facilities

Reviews and Publications:
2010 World Architecture News
2009 Perspective Vol 18/No 6
2009 Plan - Art of Architecture and Design
2008 Architecture Ireland, Dublin Volume 236
2007 World Architecture News
2008 Ratoath College, McGarry NÍ Éanaigh Architects ISBN 9780955914102

Ballyfermot Leisure and Youth Centre - Building, 2009

Awards:
Award Best Leisure Building - 2009 RIAI Irish Architecture Awards
Special Mention 2009 AAI Awards for Excellence in Architecture

Reviews:
2010/11 RIAI Irish Architecture Review, Dublin Volume 1
2009 AAI New Irish Architecture Cork Volume 24
2009 Architecture Ireland, Dublin Volume 245
2009 A+D Magazine, Brussels Issue No.32
2009 A10 Magazine, Amsterdam Issue 26, March April 2009
2009 PLAN Magazine, Dublin March 2009
2009 PLAN Irish Architecture, Dublin Review 2009
2008 The Irish Times, Dublin November 27th
2008 The Architects Journal, London Volume 228, November 13th

Dunshaughlin Parochial Centre - Building, 2010

Awards:
Dunshaughlin Pastoral Centre: Nominated Irish Entry, 2010 EU Prize for Contemporary Architecture : Mies van der Rohe Award
Dunshaughlin Pastoral Centre: Highly Commended, 2010 RIAI Irish Architecture Awards : Best Cultural Building Category
Dunshaughlin Pastoral Centre: Highly Commended, 2010 Opus Architecture and Construction Awards

Reviews:
2011 AAI New Irish Architecture Volume 26 Cork
2011 A+D Magazine Brussels, Issue No.36
2010 A10 Amsterdam 26th July 2010
2010 Architecture Ireland, Dublin Volume 251
2010 Plan Magazine, Dublin November December 2010
2010 The Architects Journal, London15 July 2010

Use of data dependence graphs in the design of bit-level systolic arrays

The use of bit-level systolic array circuits as building blocks in the construction of larger word-level systolic systems is investigated. It is shown that the overall structure and detailed timing of such systems may be derived quite simply using the dependence graph and cut-set procedure developed by S. Y. Kung (1988). This provides an attractive and intuitive approach to the bit-level design of many VLSI signal processing components. The technique can be applied to ripple-through and partly pipelined circuits as well as fully systolic designs. It therefore provides a means of examining the relative tradeoff between levels of pipelining, chip area, power consumption, and throughput rate within a given VLSI design.

Live Project love: building a framework for Live Projects

Live projects adopt a wide range of approaches: design/ build, community engagement, participation, protest, analysis, etc. They are driven by tutors with passion, expertise and the ability to manage risk, in ways that exhibit fluency and high levels of skill. They also offer sites of student-led and community co-learning, can support research, demonstrate ‘impact’ and satisfy universities’ policies on outreach. Whilst the breadth and reach of Live Projects is now demonstrably wide, we still fail to fully locate Live Projects within a pedagogical context, tending instead to limit our descriptions and hence analysis to the architectural process and outcome. This failure to locate Live Projects within a pedagogical framework means we still struggle to encapsulate, critique, progress, and indeed, elevate the work.

This chapter draws on some of the case studies presented in recent papers and international conferences in order to provide educators with signposts and important overviews around which and in respect to they can develop their own pedagogical frameworks.

Effect of serviceability limits on optimal design of steel portal frames

The design of hot-rolled steel portal frames can be sensitive to serviceability deflection limits. In such cases, in order to reduce frame deflections, practitioners increase the size of the eaves haunch and / or the sizes of the steel sections used for the column and rafter members of the frame. This paper investigates the effect of such deflection limits using a real-coded niching genetic algorithm (RC-NGA) that optimizes frame weight, taking into account both ultimate as well as serviceability limit states. The results show that the proposed GA is efficient and reliable. Two different sets of serviceability deflection limits are then considered: deflection limits recommended by the Steel Construction Institute (SCI), which is based on control of differential deflections, and other deflection limits based on suggestions by industry. Parametric studies are carried out on frames with spans ranging between 15 m to 50 m and column heights between 5 m to 10 m. It is demonstrated that for a 50 m span frame, use of the SCI recommended deflection limits can lead to frame weights that are around twice as heavy as compared to designs without these limits.

Local materials for building houses: laterite valorization in Africa

This paper presents the preliminary results of geological and geomechanical studies on the laterite stone exploited at Dano quarry in Burkina Faso. The field work described the geological structure of quarry sites and their environment to determine the rocks alteration and the links between the bedrock and lateritic material. Physic-mechanical properties have been studied for assessing the potentiality of this material for lightweight housing, to be completed with thermal and environmental considerations. Some social and economic evaluations are in progress in order to foster its utilization under local conditions.