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Some of the most significant and widely used products for steel framed buildings in the global construction market today have been developed by the Structural & Geotechnical Engineering Research Centre at City University London. Our work in this field has permitted a saving of between 25 and 30% in the amount of steel needed for such buildings, making them now on average 9% cheaper than their concrete equivalents. Our research data from this work is now incorporated into at least six Design Guides and two significant industry software suites, published by the Steel Construction Institute (SCI) [text removed for publication]. Steel frame build times have been reduced by up to 13% and the resulting buildings can be 20-50% more energy efficient, helping the industry move towards its `Target Zero' carbon goals.
The dynamic response of steel members and floor systems has been a key concern in the industry over the last decade. The work undertaken at City has been effective in helping bring new products to market and in improving the application of structural mechanics to real design situations. It has also made a significant contribution to the increasing success of the steel industry in the UK commercial building market.
National and International design codes are the key vehicles for enabling structural engineering research to impact on practice. Recent years have seen substantial advancements in such codes for stainless steel structures, to which Imperial has made outstanding contributions [A-E]. Imperial research has led directly to improved structural design provisions, enabling more efficient structures, leading to cost savings [G], further promotion of the use of stainless steel in construction [A,H,I] and a reduction in the use of construction resources. The impact and reach of Imperial's research has not only been throughout the industry (producers [H], code writers [A] and practitioners [G,I]) but also global, with widespread influence on UK, European, North American and Asian practice [A].
This Case Study builds on our sustained effort since 1981 to understand the nature of steel to an extent that enables the quantitative design of novel alloys and processes. In 1997 this led to the development of Super Bainite high-performance armour steel with an internal structure distinguished by an unprecedentedly high population density of interfaces. In 2011 this was licensed to Tata Steel who started manufacture at their Port Talbot, South Wales plant. The steel is destined for armoured vehicles. In a perforated design it has higher ballistic mass efficiency and is less expensive than conventional armour. The work at Port Talbot has re-established UK sovereign production of high-performance steel armour, after a gap of over 20 years.
University of Nottingham research into a composite design for steel beams and floor slabs has resulted in environmental and economic benefits and an important change in the construction industry. The work has reduced the weight of beams and the overall tonnage of buildings, enabled easier installation and improved structural strength. More than 40 projects, with a total combined floor area in excess of 380,000m2, have used the technology since 2008, and the method's market share has been estimated at up to 60%. The breakthrough has facilitated partnerships between steel frame designers and precast flooring manufacturers, with the value to the latter alone put at more than £5M.
The development of standards and design guides at a European level for composite concrete floors with cellular steel beams has been informed by research undertaken in the Fire Safety Engineering Research and Technology centre (FireSERT), Built Environment Research Institute. Central to the impact is the establishment of technical rules for the fire safe design of buildings constructed with the use of cellular beams. Research at the University of Ulster has demonstrated that the use of unprotected cellular beams can reduce the cost of fire protection. This research was corroborated by a major fire test conducted at an international scientific conference hosted by FireSERT in February 2010. Design guidance for innovative safe structures in fire scenarios have been published in leading journals with high impact factors.
Loughborough University research into Decision Support Systems (DSSs) has been used to transform the production and logistics operations of the Shanghai Baoshan Iron and Steel Corporation, China's largest steel company. Implementing DSS has resulted in annual savings of around US$20m and a reduction in CO2 emissions of 585,770 tons per year. The company reports that the "tremendous benefits" of the research have extended to improvements in efficiency, product quality, customer satisfaction and management culture. The work won a Franz Edelman Finalist Award in 2013 for Achievement in the Practice of Operations Research and the Management Sciences.
We have developed the Bailey-Method, design software FIRESOFT and a web-based information source for designers to use to produce safe and economical buildings. In buildings that have used the Bailey-Method, approximately 40% of the fire protection cost has been saved. The overall saving is about £20m in the UK over the REF period. The Bailey-Method has been presented in 2500 design guides (books), distributed to companies across Europe by ArcelorMittal, and translated into 17 languages. FIRESOFT and the associated quality assurance document enable using unprotected concrete filled tubular columns and have the British Standard status of Non Contradictory Complementary Information.
Over the past 13 years the University of Bath has been leading research into low-impact bio-based construction materials, including the construction and testing of two full-scale prototype buildings: BaleHaus (2009) and HemPod (2010) built on campus. The research has directly promoted: the development and wider market acceptance of award winning low carbon construction products (ModCell® and Hemcrete®); successful delivery of award winning buildings; and the wider sector uptake of these technologies, including in a new school building in Bath. The work has directly benefited industry partners working to meet UK Government policy requirements to deliver low carbon infrastructure and benefited society through the delivery of affordable sustainable buildings.
This study presents the impact of research by Plymouth's Environmental Building Group (EBG) and Centre for Earthen Architecture (CEA) on industry and regulatory bodies. These interconnected groups research the manufacture, construction, preservation and performance (thermal, hygral and acoustic) of new and old buildings of diverse construction, including earth, straw-bale and hemp-lime. EBG/CEA research has impacted the energy consumption of 690+ homeowners (21st Century Living; DECC/Eden) and contributed to national standards for construction and conservation (BRE/DEBA/English Heritage). Industry partnerships/projects include: Zero Carbon House, Kevin McCabe Ltd; Carfrae Sustainable Design; Hukseflux; Cornish Lime Company.
This Alliance project demonstrated, through the exploration of flexible formwork techniques, that it is possible to use concrete in a much more diverse, sustainable and quality-controlled way than in 20th century architecture, achieving a 25-35% reduction in the carbon footprint of concrete constructions. It has engendered an attitudinal change within the global construction industry, with one US industry professional saying "Prior to this research, concrete was often perceived of as a harsh, aggressive material. Experimentation with fabric forming has shown that it doesn't have to be so". The research has led to two Knowledge Transfer Partnerships, an award-winning Chelsea Flower Show entry and the proprietary application of the technology in other forms of construction. It has also stimulated partnership working with government and schools; collaboration described as the "Curriculum for Excellence at its best".