Constructing buildings and design ambitions By Kjell Tryggestad, Susse Georg, and Tor Hernes Department of Organization, Copenhagen Business School. Paper prepared for the special issue in Construction Management and Economics on “Objects, Knowledge Sharing and Knowledge Transformation in Projects” edited by Professor Mike Bresnen and Professor Chris Harty. Abstract Project goals are conceptualized in the construction management literature as either stable and exogenously given or as emerging endogenously during the construction process. Disparate as these perspectives may be, they both overlook the role that material objects used in construction processes can play in transforming knowledge and thereby shaping project goals. Actor network theory is used to explore the connection between objects and knowledge with the purpose of developing an adaptive and pragmatic approach to goals in construction. Based on a case study of the construction of a skyscraper, emphasis is given to how design ambitions emerge in a process of goal translation, and to how, once these ambitions are materialized, tensions between aesthetic and functional concerns emerge and are resolved. These tensions are resolved through trials of strength as the object – the building – is elaborated and circulates across sites in various forms, e.g. artistic sketches, drawings, and models. Given that initial goal accuracy is often seen as a key success factor, these insights have theoretical and practical implications for the management and evaluation of the construction project. Key words: construction management, design ambitions, project goals, knowledge, evaluation 1 Introduction Few would deny the importance that project goals have for the initiation, development and evaluation of a construction project – the goal is commonly thought of as the project’s raison d’être. However, when it comes to understanding and explaining how project goals are established, positions vary. Viewed broadly, one can discern two dominant perspectives within the literature on project and construction management: one that treats goals as exogenously given, as input, and another that considers goals as endogenous to the project, i.e. as evolving in the course of a construction process. Disparate as these perspectives may be, they have one thing in common: neither perspective attends to the contingent role of materiality in the construction process. In what follows we address the question of how objects and technologies used in construction, including the building itself, are actively involved in shaping – or are constitutive of – project goals and the underlying design ambitions. We argue that these dominant perspectives are problematic because they either ignore or overlook how material artefacts and objects help make project goals and design ambitions what they are. More specifically, we suggest actor network theory as a way to empirically explore the emergent connections between objects, knowledge and goals within a construction project. Thus, the aim of our study is threefold: (1) to describe and analyze how project goals and ambitions are actively shaped and established by a variety of objects, (2) to develop an adaptive and pragmatic approach to goals in construction, and (3) to discuss implications for the management and evaluation of the construction project. Goals and ambitions – inputs, outputs or both at the same time 2 Goals are conventionally defined as an object of a person’s ambition or strong desire to achieve something (Webster’s dictionary 1995), e.g. be it the development of a new product or the construction of a new building. However, delving further into this definition, the Latin etymology of ‘ambition’ draws attention to another, less cited meaning – “going around (canvassing for votes)”(Webster’s dictionary 1995: 31). Both definitions can be found within the project and construction management literature: the former figures prominently in the more normative project and construction management literature, e.g. the emphasis given to identifying the client’s or stakeholders’ goals (Newcombe,2003, PMI 2004, Walker 2002, Winch 2002); whereas the mobilization of support, associated with the etymology of ambition, is more in keeping with more descriptive approaches to project and construction management (Engwall 2002, Kreiner 1995, Pollack 2007). The first body of literature devotes little attention to how goals are formed and decided upon. They are often assumed to be exogenously given by the client as input to the construction process (Walker 2002), and preferably also within the client’s corporate strategy (Winch 2002). Furthermore, it is often assumed that initial goals can be made accurate (Flyvbjerg 2006) and “SMART”, i.e. Specific, Measurable, Achievable, Result‐oriented, and Time‐based (Gardiner2005: 202) and, by doing so, that it will be possible to reduce (project) uncertainty and divide project objectives into sub‐objectives so as to enhance coordination and goal realization. Moreover, as projects move through their life cycles towards completion, project uncertainty is also assumed to be reduced as more information gradually becomes available. Should uncertainty prevail due to unexpected events, or lack of information, knowledge, time, and/or money, then the usual remedy is to introduce more sophisticated planning and problem‐solving techniques, enhanced managerial and contractual control, different costing techniques, etc., so as to enhance goal 3 accuracy (Collyer and Warren 2009, Gardiner 2005, Winch 2002). This is considered key for successfully implementing the client’s overall strategy. Winch (2002) also suggests that goal uncertainty can be reduced by increasing the client’s information about the design by introducing devices such as prototypes, mock‐ups, computer aided design and simulations prior to deciding upon the design mission and the planning of its realization. The normative assumption is that more upfront information will make the client’s goals and priorities clearer. To this end, the devices serve as (neutral) means of representation and as vehicles of codified knowledge about the project/design. The second body of literature, grounded on a critique of the rationalism associated with the ‘goal as input’ approach, emphasizes participation, learning and exploration (Green 1999, Green et al. 2008, Kreiner 1995, Kreiner 2006, Sahlin‐Andersson and Söderholm 2002, Bresnen and Marshall 2002). Drawing upon observations that most projects are not the result of rational decision making (Engwall 2002), it is argued that projects are more likely to be controversial, subject to different interpretations and, therefore, something that has to be negotiated amongst coalitions of parties involved; a position in keeping with the above‐cited Latin etymology of ambitions. Following Brunsson (1985), decision‐making is understood as a way of achieving collective action rather than as a matter of choice between alternatives. Accordingly, goals and ambitions are conceived of as outputs of collective action rather than as (given) inputs. Goals are, therefore, often neither well‐defined from the onset, nor are they stable throughout the course of the construction project. Scope changes and goal re‐definition are a result of the involved stakeholders’ learning, and making trade‐offs is seen as a matter of mobilizing and gaining support rather than improving calculations, developing more sophisticated planning and control techniques. Moreover, goals, ambitions and trade‐offs can be modified through experience, i.e. as 4 people involved gain more insights into what is ‘do‐able’ and discover things not previously imaginable. Following from this, goal formation and realization are not considered separate actions but as a continuous process (Engwall 2002: 272). However, precisely because of the contentiousness of many projects, goals must also be considered as “political products” (Engwall 2002: 275) or as Winch notes (2002: 225) “negotiated order”. Goal formation is, however, conceptualized as socially negotiated order, with little or no attention given to the role material artefacts may play in achieving this order. This is surprising given the overwhelming evidence that materiality is substantial in construction projects, and the further evidence concerning unintended outcomes such as accidents (Kreiner, 2006), design and scope changes (Winch 2002), time delays and budget overrun (Flyvbjerg, 2006). As an alternative, we introduce actor network theory (ANT) in order to move beyond considering goals as either input to or the output of decision making. Although once almost exclusively associated with science and technology studies (Callon 1981; Latour 2002, 2005), ANT is now being applied in organization and management studies (Czarniawska and Hernes 2005, Kreiner 2002, Kreiner and Tryggestad 2002, Enberg, Lindkvist and Tell 2006, Kreiner 2006, Hernes 2008, Woolgar et al. 2009, Justesen and Mouritsen 2009), but its use within construction management research is – with a few notable exceptions (Harty 2008, Harty 2005, Whyte and Ewenstein 2007, Whyte et al. 2007) – relatively limited. With its emphasis on how objects, facts and ideas are constructed ANT can, however, provide valuable insights into the serendipitous and contingent ways in which construction projects evolve. There are three central analytical constructs in ANT – goal translation, trials of strength and circulating objects – which are useful to this end. 5 The connection between goals and objects is discussed by Latour (2002) with reference to a commonplace object in construction – a hammer. When inserted in the hand, the hammer affords different possible courses of action, one of them being hitting nails. If you want to build something, then the hammer is likely to be important for the realization of this ambition/goal. It participates in this course of action but without necessarily ‘determining’ which way the building activities will go. On a more general note, the role of objects can range from determining the course of action to serving as a backdrop for human action, but in addition to this they “might authorize, allow, afford, encourage, permit, suggest, influence, block, render possible, forbid, and so on” (Latour 2005: 72), i.e. offer a multitude of options; none of which are necessarily given. One important point following from this line of reasoning is that objects, e.g. technologies and even the materiality of a building under construction, can be regarded as mediators, i.e. as entities actively involved in transforming, modifying or even distorting the meaning that they are supposed to carry. As Latour notes (2002: 252; emphasis added): “If you want to keep your intentions straight, your plans inflexible, your programmes of action rigid, then do not pass through any form of technological life. The detour will translate, will betray, your most imperious desires.” The concept of translation (Callon 1981) directs attention to the (active) mediating role of objects in transforming goals; a process which Latour has elsewhere termed as “goal translation” (Latour 1999: 179). As people become (re)equipped with different technical objects, it is, therefore, likely that their goals and ambitions will be translated into something different. The ways in which this takes place and the results it has are uncertain and can only be determined empirically. According to ANT, a chain of associations – of humans and objects – is “only as strong as its weakest link” (Latour 1987: 121), and it is therefore likely to be subject to transformations as 6 human and objects interact. In such instances there will be on‐going “trials of strength” (Latour, 1987). These take place when someone or something contends with the prevailing ‘order’, i.e. challenges the status quo by problematizing the existing (Callon 1981). However, to do so, the contender must mobilize not only a host of arguments but also many things/objects to build and support these arguments. Whether or not the contender succeeds depends on whether or not the contender can convince others of his/her claims. Take the question of the technical feasibility of a construction design as an example: architectural sketches may not initially give reason to question the technical feasibility of a design, whereas more detailed, technical drawings may. Resolving this may likely call for more calculations, drawings, and perhaps even simulations to demonstrate the feasibility of the design, but continued contention is also costly because, as Latour (1987: 78) notes “the dissenter would need so much more time, so many more allies and resources to continue to dissent that he has to quit, accepting the claim as an established fact” . Following from this, a project goal may be established through trials of strength and, returning to the etymology of ambitions, enabled by the “going around” or circulation of objects “to canvass for votes.” The notion ‘design ambition’ is introduced to not only capture the aesthetic, functional and economic aspects of project goals, but also to suggest a particular ‘performative’ approach (Callon 2007, Latour 1986) that emphasizes the role of circulating objects in negotiating these ambitions: “ they do things. They articulate actions; they act or they make others act.” (Muniesa, Millo and Callon 2007: 2) Hence, ANT offers a different perspective on goals and ambitions than the above‐mentioned normative and descriptive literature. Rather than conceptualizing goals as either input or output, the notion of goal translation suggests that they may be both at the same time as objects mediate to transform them. Determining what role objects play in changing design ambitions and goal 7 realization is an empirical question, but if thoroughly explored, the analysis can show how collective action is made possible, thus, adding a material dimension to the understanding of decision‐making as achieving collective action (Brunsson 1985, Engwall 2002). In what follows we direct attention to the role that artistic sketches, drawings, photos and models play in the construction of a skyscraper. These objects are not just considered visualizations of ambitions and knowledge (Whyte, Ewenstein, Hales & Tidd 2008, Whyte 2003); they are also entities that can actively mediate in the construction process transforming ambitions as they “go around”; circulating between various contexts such as an architect’s studio, a construction site, and a laboratory used to test the design’s technical feasibility. We show that project goals and specifications emerge endogenously and continuously as objects, project members, the stakeholder environment and the emerging building interact. It is through these interactions that new insights and new ways of knowing the building can be produced (Yaneva, 2005), and the design ambitions subsequently transformed. This has, we argue, practical implications for the management and evaluation of success (or failure) in construction projects. In conclusion we suggest that managing and evaluating construction projects based on initial design ambitions may be prone to false learning (Busby 2001, Kreiner 2006), because design ambitions change in the course of the construction process, not just because additional information becomes available in the course of the project life cycle but because of the contingent role of the materiality involved. This, in turn, allows us to address hitherto unaddressed aspects of goal formation, scope changes and design ambitions, which can augment insights from the existing approaches to project and construction management, and to suggest more relevant procedures and criteria for construction management and evaluation that take knowledge production and learning into account. 8 Research setting and method Our research is based on a study of the construction of the ”Turning Torso”, a skyscraper in Malmö, Sweden. It is a case study of how goals and ambitions for a construction project are shaped. Construction started in 2001 and was completed some four years later – in late 2005 – 3 years behind schedule and some 800 million SEK over budget, a cost overrun of approximately 100%. The building was designed by the Spanish architect and engineer Santiago Calatrava and commissioned as well as built by the Malmö branch of the cooperative housing association, HSB‐ Malmö (HSB is the acronym for Hyresgästernes Sparkasse och Bygnadsförening, the “Tenants Savings bank and Construction Association”, which has 33 regional offices across Sweden). The construction process, as well as the end result, are in many ways spectacular: not only is the building spectacular aesthetically, given the skyscraper’s dramatic, kinetic form – it is 190 meters tall and rotates 90 degrees from the base to the top, just as the name indicates. It is also spectacular because of the engineering ingenuity involved in constructing one of the highest residential buildings in Europe. Moreover, the Turning Torso is spectacular in a political sense because of the controversies it sparked for being over‐budget, delayed and for changing the identity of the clients, customers and of the city in turn. The empirical material was assembled by one of the authors in the course of two years, from 2004 to 2006, i.e. initiated towards the end of the construction process but continued in the year following the building’s completion. The empirical material consists of documentary material, e.g. city plans, consultancy reports, HSB memos and decision protocols, architectural sketches, drawings, photos, models, movies, press releases, and articles from the local newspapers and magazines, and transcripts of in depth interviews with eleven key informants from the major 9 organizations participating in the project. The duration of each interview was approximately 1 ½ hours. The interviewees included the head of project management, project marketing, several architects, quality consultants, the head and members of the city’s planning and architecture department, as well as the former and current CEO of HSB. Given that many of the interviews were retrospective, key documents such as architectural drawings were used during the interviews to provide a relevant framework and focus. The purpose was not just to prompt the interviewees’ memories but also to simultaneously ‘triangulate’ or position the interviewees and field researcher in order to jointly recollect and reconstruct the chain of events in this complex and controversial construction process by following document trails (Latour 1987, Justesen 2005). The analysis is based on a systematic reading of the empirical material to develop time lines, identify controversies and changes in the goal specifications, identify objects with a significant role in the chain of events and to follow the chain of associations connecting the key decision‐makers with these objects, e.g. the architect/engineer’s sketch and a model of a twisting torso, the budget (in multiple versions), laboratory simulations, and the emergent building. Our approach is similar to the one taken by Latour (1996) in his study of Aramis, a public‐transport system in France. The aim is to explain the project events with the help of the involved actors, which means that the study’s scope is limited by the boundaries proposed by the actors themselves. One boundary which we were unable to explore was the one set by Santiago Calatrava. Given the timing of our study, we were unable to conduct in situ observations of the bench work within the ‘laboratory’ of the architect’s office (Yaneva 2005). However, as Czarniawska (1998) and others have argued, chains of events are likely to take place simultaneously at different sites, rendering real time 10
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