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Points out that many problems have arisen in the flat roofing industry as a result of the inadequacy of the earlier specification. In addition the suggested remedies bring many other difficulties in their wake. Aims to identify the pitfalls and suggest some solutions. Discusses different types of insulations with their advantages and disadvantages. Concludes by outlining the recommended upgrading specification for a flat roof.

Offers guidelines for surveyors dealing with pitched metal roofs built between the early 1970s and the present. Discusses roof pitch recommendations, insulation, linings, fastenings, leaks, corrosion, and sealants. Summarises that surveyors should consider particular points of corrosion, condensation, leaks and insulations when dealing with metal roofs.

The physically-demanding and repetitive nature of construction work often exposes workers to work-related musculoskeletal injuries. Real-time information about the ergonomic consequences of workers' postures can enhance their ability to control or self-manage their exposures. This study proposes a digital twin framework to improve self-management ergonomic exposures through bi-directional mapping between workers' postures and their corresponding virtual replica.

The viability of the proposed approach was demonstrated by implementing the digital twin framework on a simulated floor-framing task. The proposed framework uses wearable sensors to track the kinematics of workers' body segments and communicates the ergonomic risks via an augmented virtual replica within the worker's field of view. Sequence-to-sequence long short-term memory (LSTM) network is employed to adapt the virtual feedback to workers' performance.

Results show promise for reducing ergonomic risks of the construction workforce through improved awareness. The experimental study demonstrates feasibility of the proposed approach for reducing overexertion of the trunk. Performance of the LSTM network improved when trained with augmented data but at a high computational cost.

Suggested actionable feedback is currently based on actual work postures. The study is experimental and will need to be scaled up prior to field deployment.

This study reveals the potentials of digital twins for personalized posture training and sets precedence for further investigations into opportunities offered by digital twins for improving health and wellbeing of the construction workforce.

The purpose of this paper is to further understanding of how information systems (IS) strategy is developed and implemented in small and medium‐sized enterprises (SMEs).

The purpose utilizes eight case studies, each one covering an 18‐24 month time span. Qualitative research based on first‐hand experience (action‐research), interviews, meeting minutes, Board papers, final reports. Earl's model of IS strategy development is used as a framework for assessing strategy development and implementation.

All three approaches identified by Earl are valid, depending on business context. All eight companies have been successful in their IS investment, some showing significant bottom‐line benefits.

Shows value of properly managed IS strategy deployment in SMEs. Should encourage SMEs to adopt mid‐ to long‐term approach to IS, linked to business plan. Models for IS strategy development and alignment could be progressed in subsequent research, focussing on some of these company projects and others just starting

Case studies provide real life examples of IS good practice in SMEs. Cases can also be used as “benchmarks”. Supports alignment of IS strategy with overall business strategy. May encourage other companies to explore use of knowledge transfer partnership (KTP) scheme for IS strategy deployment.

The case examples are original and have not been studied before. Strategic options, key decisions, product selections and benefits gained are of value as examples to senior management and IS professionals in industry. Provides examples of how KTP scheme operates.

This is an initial attempt to classify natural roofing slate quality using the new European Standard BS EN 12326 and suggest how such classification may be employed to predict in‐service performance and identify potentially problematic materials.

A wide range of natural roofing slates has been subjected to the new standard testing regime and additional tests carried out. Experience of known in‐service performance and previous test results have also been taken into consideration.

An initial classification of natural roofing slate quality has been proposed with the flexural strength, water absorption, potential for oxidation and carbonate content considered to be the key components.

There is considerable scope for refinement of the proposed classification by investigating the performance of the wide range of other natural roofing slates available and taking the results into consideration. Predicted in‐service performance is based on practical experience and can be considered only a general guide.

By classifying natural roofing slate quality users will be able to make better informed purchasing decisions based on cost versus quality. Slate producers, especially those with higher quality slates, will also be able to market their materials accordingly with less chance of losing out to lower quality, potentially problematic materials that still conform to the new standard.

The concept of a quality classification for natural roofing slate is not new, but this has been omitted during the creation of the new standard. The proposed classification is broader and probably better defined than those in existence elsewhere or previously used within the European Union member states.

After reading and analyzing the case study, the students would be able to identify the main stakeholders and decision-makers and their importance and influence on the environment for a product, evaluate the value chain of the product and critical decision-makers, evaluate the various ways to avoid falling into the trap of greenwashing and examine the marketing strategy to market an environmentally friendly product.

LIKO-S is a Czech manufacturing and construction company. The company has been designing and creating intelligent solutions, such as green facades or vertical greenery systems, to save energy in building heating and cooling systems. The company launched green facades in the Czech market. However, the main obstacle was the need for supporting data to showcase the positive environmental impact of green facades. Under these circumstances, Libor Musil’s main objective was to overcome prevalent misconceptions about green facades and find a suitable market segment. The situation worried the company, as LIKO-S had heavily invested in developing and marketing the green walls. The management had to tackle this challenge as soon as possible to recover the substantial research and development and marketing investments. Furthermore, owing to lack of information, even genuinely sustainable products were seen as greenwashing. In addition, bad or wrong customer perceptions of these walls might spill over to other products, tarnishing the company’s image and threatening its survival in the domestic market. Under these circumstances, competitors might enter the Czech market, jeopardizing the company’s overall profits. Consequently, Libor was in a great dilemma about managing the financial and reputational risk of the company. Should Libor close the green walls unit, explore different markets/uses or help increase awareness among the general population about green walls by finding a suitable marketing strategy?

The case study was designed for graduate-level students in the strategic management (CSR and innovation module) courses. However, the case could also be an excellent addition to marketing courses dealing with customers’ perceptions of innovative products and strategies to improve the adoption of the product.

Teaching notes are available for educators only.

CSS 3: Entrepreneurship

The Indonesian government has been trying to support the development of small and medium enterprises (SMEs) in the country, as these enterprises are expected to play a crucial role not only for employment creation but also for GDP formation and export development. The paper aims to address the following three questions. First, are networks important for the development of SME clusters, especially for those involved in export activities? Second, in what type of clusters are networks well developed? Third, what is the role of government; does it also play as an important network for SME cluster development?

This paper is based on an ongoing research on the importance of networks in the development of export‐oriented SME clusters in Indonesia. Although the paper also discusses other important issues related to the development of SMEs in the country, i.e. constraints facing the enterprises and women entrepreneurs, the paper focuses on the importance of networks.

First, SMEs are of overwhelming importance to Indonesia because they account for more than 90 percent of all firms outside of the agricultural sector. Second, the main constraints faced by small entrepreneurs are, lack of finance and difficulties in marketing. Third, the representation of women entrepreneurs in Indonesia is still relatively low which can be attributed to various factors, e.g. low level of education and lack of training opportunities that make Indonesian women severely disadvantaged in both the economy and society. Finally, although in general Indonesia is not well represented with small and medium industrial clusters that feed into global commodity chains, some clusters have gradually become export‐oriented. Among many factors, well developed networks especially with traders, trading houses, and foreign tourists are indeed an important factor for their increasingly export activities. Even these agents have played more important role than supports from government for their successful export.

The paper examines the importance of networks for the export‐oriented SME clusters in Indonesia.

Roofing is one of the most dangerous jobs in the construction industry. Due to factors such as lack of planning, training and use of precaution, roofing contractors and workers continuously violate the fall protection standards enforced by the US Occupational Safety and Health Administration. A preferable way to alleviate this situation is automating the process of non-compliance checking of safety standards through measurements conducted in site daily accumulated videos and photos. As a key component, the purpose of this paper is to devise a method to detect roofs in site images that is indispensable for such automation process.

This method represents roof objects through image segmentation and visual feature extraction. The visual features include colour, texture, compactness, contrast and the presence of roof corner. A classification algorithm is selected to use the derived representation for statistical learning and detection.

The experiments led to detection accuracy of 97.50 per cent, with over 15 per cent improvement in comparison to conventional classifiers, signifying the effectiveness of the proposed method.

This study did not test on images of roofs in the following conditions: roofs initially built without apparent appearance (e.g. structural roof framing completed and undergoing the sheathing process) and flat, barrel and dome roofs. From a standpoint of construction safety, while the present work is vital, coupling with semantic representation and analysis is still needed to allow for risk analysis of fall violations on roof sites.

This study is the first to address roof detection in site images. Its findings provide a basis to enable semantic representation of roof site objects of interests (e.g. co-existence and correlation among roof site, roofer, guardrail and personal fall arrest system) that is needed to automate the non-compliance checking of safety standards on roof sites.

The key aspects that built environment professionals need to consider when evaluating roofs for the purpose of green roof retrofit and also when assessing green roofs for technical due diligence purposes are outlined. Although green or sod roofs have been built over many centuries, contemporary roofs adopt new approaches and technologies. The paper aims to discuss these issues.

A mixed methods design based on a systematic review of relevant literature from parallel disciplines was used to identify and quantify the social, economic and environmental benefits of retrofitted green roofs in commercial districts. The technical issues of concern were drawn from a desk-top survey of literature and from stakeholder focus groups undertaken in Sydney in 2012.

There are perceptions amongst built environmental practitioners that may act as artificial barriers to uptake. There is little direct experience within built environment professionals and practitioners, along with a fear of the unknown and a risk averse attitude towards perceived innovation which predicates against green roof retrofit. Furthermore projects with green roofs at inception and early design stage are often “value engineered” out of the design as time progresses. There is a need for best practice guidance notes for practitioners to follow when appraising roofs for retrofit and also for technical due diligence purposes.

The focus groups are limited to Sydney-based practitioners. Although many of these practitioners have international experience, few had experience of green roofs. A limited number of roof typologies were considered in this research and some regions and countries may adopt different construction practices.

In central business districts the installation of green roof technology is seen as one of the main contributors to water sensitive urban design (WSUD). It is likely that more green roofs will be constructed over time and practitioners need knowledge of the technology as well as the ability to provide best advice to clients.

The benefits of green roofs as part of WSUD are increasingly being recognised in terms of reduced flood risk, reduced cost of drainage, improved water quality and lower energy use, as well as other less tangible aspects such as aesthetics and amenity. This research highlights the lack of understanding of the short- and long-term benefits, a poor appreciation and awareness of these benefits; a lack of technical knowledge and issues to be considered with regard to green roofs on behalf of practitioners. The study has highlighted the need for specific training and up-skilling in these areas to provide surveyors with the technical expertise needed. There is also a need to consider how the emerging retrofit and adaptation themes are best designed into the curriculum at both undergraduate and postgraduate levels. Clearly, if the potential benefits of green roofs are to be realised in the future, building professionals need to be fully conversant with the technology and be able to provide reliable and accurate advice.

This paper is predominantly concerned with flat roofs of timber construction with which the author is most familiar. The principles discussed are, however, generally applicable to roofs constructed of other materials.