Garnett - 2000 - Evaluación Comparativa de La Construcción - Teoría y Práctica
Garnett - 2000 - Evaluación Comparativa de La Construcción - Teoría y Práctica
Garnett - 2000 - Evaluación Comparativa de La Construcción - Teoría y Práctica
To cite this article: Naomi Garnett & Simone Pickrell (2000): Benchmarking for construction: theory and practice,
Construction Management and Economics, 18:1, 55-63
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Construction Management and Economics (2000) 18, 55± 63
The UK construction industry has identi® ed benchmarking as one of a number of initiatives to assist in the
drive for major improvements in ef® ciency and economy. At the outset, the industry struggled to see how
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a technique based upon comparison of similar goods and processes could be used effectively in a project
based industry where products, processes and teams changed regularly. This paper discusses the develop-
ment and testing of a benchmarking model and study methodology for use in construction. The model was
derived from an extensive literature review which considered the underlying theoretical basis of benchmarking.
The case is made that, to be successful, the benchmarking process is as important as the benchmarks them-
selves, and that it is based upon constructivist foundations, rather than positivist. As such, any methodology
for undertaking benchmarking must take place in a similar vein, i.e. be interactive, team based and ¯ exible
but with an underlying rigour provided by the benchmarking model. The paper outlines two case studies to
test the benchmarking model and study methodology, discusses the learning and bene® ts that accrued and
introduces further developments.
models and variations of the benchmarking process. actively in this way. Adopting a process view enables
Three types of benchmarking are identi® ed, i.e. process benchmarking to take place in both physical
product, performance or process. Product bench- transformation processes, such as constructing a
marking concentrates on understanding how one retaining wall; and soft, less tangible processes such as
product compares with another. Performance bench- project management. Furthermore although the project
marking compares one company performance with may change in nature, often the processes used to
another. achieve it are similar and this builds a basis for bench-
Process benchmarking is the most recent develop- marking. Construction speci® c problems include the
ment. It offers additional bene® ts over product or following.
performance benchmarking by enabling work to be 1. Construction is a project based industry with
viewed as a series of holistic transformation events with various locations (Baden and Baden, 1993) and
identi® able inputs and outputs. This approach stems no two projects are the same. This hinders team
from the systems theories of the 1960s and developed building, learning from experience and feed-
subsequently by authors such as Checkland (1981, back. Additionally, a common misconception is
1987). that this perceived industry fragmentation
The literature also provides information on the prob- directly hinders the use of process techniques
lems involved in implementing benchmarking both and the ability to compare processes or
generally and in construction. A Coopers & Lybrand subprocesses with other organizations or indus-
(1994) survey of other industries re¯ ected the following tries.
dif® culties: (a) insuf® cient resources, time, money, 2. d’Arcy(1994) reported that the inability to iden-
staff, etc.; (b) internal resistance; (c) previous bad tify best practice, together with dif® culty in
experiences; (d) dif® culty in identifying and obtaining measuring processes, also contributed to an
partners; and (e) dif® culty in obtaining data. unwillingness to adopt benchmarking.
In essence all these works are aimed at practitioners 3. Few good examples of `benchmarking’ exist in
and are intended as guidance manuals to bench- the construction industry. They are result
marking. Few of them address the theoretical basis of focused and dif® cult to emulate. This was a
benchmarking or consider its underlying epistemology. contributory factor in the low uptake of bench-
This needs to be made explicit to enable use of the
marking in construction.
benchmarking process in a range of contexts.
information about the current situation which then can (manufacturing industry examples revealed a
be used to set targets to focus the change strategy. more rigorous and interactive benchmarking
Often data, loosely termed benchmarks, are deter- process, based within companies dedicated to
mined by comparative analysis, experience and gut tackling dif® cult core business processes);
feeling rather than through focused analysis. In 2. although there were many examples of bench-
these circumstances, it is dif® cult to be successful in marking methodologies and snapshots from case
achieving them, since the underlying processes on studies, there was little discussion of the theor-
which they are based are not well de® ned. etical underpinning of benchmarking in the
Benchmarking provides the means to identify why `best existing body of knowledge (research suggests
practice’ organizations are high achievers, and how that the benchmarking process has a construc-
others can learn from best practice processes to tivist dynamic and any methodology needs to
improve their own approach. align with this);
Confusion of the two terms was seen to jeopardize 3. well detailed construction industry case studies
the uptake of benchmarking in the construction emphasizing the process of benchmarking not
industry. A de® nition, (Pickrell et al., 1997), encapsu- the benchmarks are unavailable.
lating the key elements of the benchmarking was devel-
oped with this in mind: `benchmarking is a continuous
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based on those steps considered most relevant to 6. Implementation. The data collection phase provides
construction. The key features of each stage and their both a benchmark from which to commence and, by
relevance to construction are as follows identifying best practice for each metric within the
l. The need for change. It is important to establish partnership, a base from which to set goals. Monitoring
whether change is necessary, if the organization is ready and re-calibration stages are agreed and all those
to accept it and who will take responsibility for any affected are kept involved and informed.
initiatives. The construction industry has been unsuc- 7. Feedback. As benchmarking is a continuous
cessful with many previous initiatives because these process, feedback is essential. This may be communi-
basic questions were not asked. cated in a number of ways consistent with the groups
2. The decision to benchmark. There are many receiving information. At this point a continuous moni-
examples of improvement techniques. Therefore, the toring and improvement strategy is identi® ed for the
suitability of benchmarking should be established area benchmarked, and new areas are identi® ed for
particularly with respect to whether any other initia- further studies.
tives are underway, the number of staff willing to be Although the model is illustrated as a formal
or having been trained in the technique and so forth. approach, it is very ¯ exible in the order of the stages,
Benchmarking is an excellent technique to stand alone, what is measured, and how this is achieved. For
or be used in support of other initiatives; however, it example, identi® cation of suitable partners may
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does require suf® cient resourcing for the purpose and, precede the decision on type of benchmarking study,
as such, a decision has to be taken on its use. which will set the type. In the case of a study on
Stages 1 and 2 are important because they should `change management’ , the initiating partner chose
result in senior management commitment to bench- partners who were competitors in their core business
marking. area (outside of construction), but were functionally
3. Identifying what to benchmark. Organizational similar in the area identi® ed for benchmarking
charts are used to identify the level of business at which (construction). Additionally, the area of focus can be
the study is taking place. Process mapping workshops anything from management issues on the strategic
identify core business areas, and further issues such business to daily site activities, which will require very
as customer focus, added bene® t and quick wins different approaches. It is recommended that a ® rst
are considered. Critical success factors and strategic study is relatively easy and provides a quick win.
metrics are applied to the chosen core area. This stage
is essential in identifying a manageable focus for the
Case study methodology
study.
4. Design of the benchmarking study. Early prepara- An action research approach of case study work to test
tion allows identi® cation of the most appropriate type the benchmarking model was adopted. To support the
of benchmarking, i.e. internal, competitive, functional use of the model in practice, a case study methodology
or generic, and the types of partners to approach. was devised using a series of workshops to progress
Partners may be involved from the earliest process through the benchmarking process. In designing the
mapping stages, or after an area has been identi® ed. methodology, the principles of naturalistic enquiry
Either way, they work together to re® ne the measure- (Lincoln and Guba, 1985) were considered: i.e. the
ments and produce `rules for measurement’ relating to research must take place within the natural setting or
the boundaries of the study. The outputs from this context, and the researcher has to be fully involved
stage include a con® dentiality agreement, a partners’ and all those taking part are important to the study.
charter and the framework for a pilot study. The model was tested in two case studies, one func-
5. Data collection and analysis. This traditionally tional benchmarking, the other generic (Figure 2).
commences with a pilot data collection phase, from The key objectives were that learning points from
which partners identify what is available, from whom the case studies were fed back into both the model and
and how it is held within their organizations. The the case study methodology, a neutral role was created
results of this lead to re® ning of collection methods to encourage greater openness amongst the bench-
and resources for the main collection phase. The pilot marking partners and study momentum was main-
stage is essential, as it is rare for partners to be aware tained. The studies commenced with several meetings
of the complications of data collection in new areas. aimed at focusing on the level of business, identi® ca-
The analysis phase should not be underestimated, and tion of potential partners and establishing answers to
requires a dedicated person within each organization. steps 1 and 2 (Figure 1). Once the benchmarking part-
Communication of the results is crucial to getting the ners were in place a series of structured workshops
messages across and underpinning implementation of were followed from steps 3± 7 (Figure 1). This generic
change. framework is described in Figure 3.
Benchmarking for construction 59
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Case studies
2. The workshop followed a `¯ exible’ agenda covering: of project cost, and number of changes per change
1. partners familiarization with each other and their item, which is illustrated in Figure 4. Each partner
organizations; 2. agreement of the level of business that identi® ed their highest priority metrics and the best
the study was taking place in; 3. general concerns about practice partner for this metric, in order to discuss how
change management; and 4. preparation of the change better results had been achieved. For example, one
process map. Thirteen types of change, and the means partner wishing to improve on approved cost compared
of measuring them, were identi® ed for the pilot study. with hand-over cost discussed this with the partner
Partners collected their data and returned it to the achieving near 100% accuracy for this metric.
research team for analysis prior to workshop 2. The format for the ® nal report was agreed. A two-
Workshop 2 ± Steps 4 and 5 level report, one public/one con® dential and using only
The pilot study identi® ed the types of information alphabetical letters to identify each partner, was
available within each organization and the resources prepared by the research team and returned to the
required to collect it. The 13 change types were partners prior to workshop.
reduced to seven as they were found to be too Workshop 4 ± Steps 6 and 7
ambiguous. The ® nal list included: 1. corporate change
(for example, brand image); 2. design development; 3. Report amendments were agreed. Discussion of, and
speci® c brief change (client instructions); 4. statutory agreement on, implementation of the ® ndings took
authority (such as building control); 5. estates (relating place. Partners provided feedback on the case study.
to estates and property management); 6. construction An of® cial feedback meeting was scheduled for 6
change (arising from problems on site); and 7. other. months ahead of the ® nal report, to encourage the part-
Tighter parameters were agreed for some of the ners to share their progress.
metrics: for example, approved cost was further de® ned
as `approved project cost the day before site work Case study 2: Research organizations ±
commences’ . De® nitions were agreed. The design construction/other
stage was clari® ed as `the time between receiving
the authorization to proceed and the contract start The generic framework was similar; however case study
date’ . Amendments were made to the data collection 2 differed in the following ways.
tables. Preparatory meeting
Partners collected the main study data and returned
it to the research team for analysis prior to workshop Two construction related partners from the project,
3. At this point, two of the original seven partners both representing research departments, identi® ed
dropped out prior to sensitive data being shared, as their major concerns for the core areas of business.
they were unable to resource the study. Partners and researchers brainstormed organizations in
and outside of the construction industry who dealt with
Workshop 3 ± Step 5 similar issues. The researchers contacted and inter-
The results were presented in tabular form and graphs, viewed those potential partners who were interested in
illustrating the performance of each partner on 24 the study.
Benchmarking for construction 61
Benchmarking process
Case study 2 ran much more smoothly than case study
1, due partly to improvements in and experience of
the process, and due partly to a more straightforward
process.
The partners and research team approached the ® rst
Figure 5 Number of successful and unsuccessful proposals benchmarking study in each case, with the intention
of getting important metrics in a core area of business.
They completed the studies appreciating that priority
had been to `learn how to benchmark’ on the ® rst occa-
sion, with core area metrics being a priority for the
Workshop 1 ± Step 3 second study. However, it is dif® cult to imagine how
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The information dissemination process was mapped. the ® rst studies could have been approached any other
It had four stages of which three, action, output and way initially, as partners bought-into the expectation
distribution, were considered core areas, and led to a of obtaining hard results.
second level of six subcore areas as illustrated in Figure Management approval was essential and needed to
2. Critical success factors were identi® ed for each of be gained ahead of an external study where sensitive
the subcore areas, e.g. `understanding the problem’ for information was to be shared. More information is
client needs and `using the right language’ for quality required on how this can best be handled.
of communication. Metrics were agreed for each of The pilot study was essential in identifying problems
these, in readiness for the pilot study. with collection and de® nition.
The number of workshops was appropriate for both
Workshop 2 ± Steps 4 and 5 studies, but with a ¯ exible agenda allowing for some
The data were collected quickly and without much modi® cation, where necessary.
dif® culty, therefore requiring little amendment. This Process maps were essential for creating a focus for
meant the majority of the main study was complete. the study.
As the collected information was already appearing The con® dentiality agreement and charter created
useful, some amendments were made to the tables, in the important initial basis of trust.
order that they could be used in the future. Partners reported that external facilitators had been
essential in providing a neutral role and maintaining
Workshop 3 ± Step 5 momentum.
Although the results were presented in a similar
manner to case study 1 (see Figure 5) they were of a Case study results
nature that was much easier to follow, and therefore In the ® rst study it was thought that the partners would
partners were getting quicker `messages’ and identi- use the results to talk to each other about the speci® cs of
fying fast ways to implement improvements. For differences in performance gaps. The majority of
example, one partner, having identi® ed a bottleneck in the discussions ended up as a general forum for ideas.
report preparation which delayed completion unnec- The bene® ts of this study were more subjective than
essarily, was in the process of identifying why this expected. Those partners only anticipating hard mea-
occurred and how it could be improved. sures considered it had been a disappointment, as they
did not see the bene® t of sharing ideas in this forum ± a
Workshop 4 ± Steps 6 and 7 relatively new situation in that these parties would not
Several of the partners had already initiated imple- have `teamed up’ in the past. As a result of this they were
mentation strategies and were getting more feedback. unaware of much of the new information they were gain-
ing. The remaining partners were pleased with the open
Case study learning environment which the study had provided.
There were many ® ndings from the case studies. Those A range of metrics were developed and measured in
from the ® rst study led to re® nement of the bench- both studies, giving useful information to those part-
marking model and case study methodology, in prepa- ners involved. The response to these results and the
ration for case study 2. Due to the large number, this level of business at which the case studies had been
62 Garnett and Pickrell
carried out was mixed, with some partners using Frequently, the issue of an underpinning theory is
the metrics to directly improve their daily business, overlooked, particularly where there is a need to be
whereas others believed the study needed to be at a `doing’ , rather than thinking. The research project itself
higher level. created an environment in which construction acade-
It was fairly easy to establish metrics that encom- mics and practitioners could come together to consider
passed a bene® t for all partners, and every partner was the nature of benchmarking and its application in
able to contribute as they were highest performers in construction, an area outside of its normal ® eld of
several areas each. application.
Benchmarking has proved to be a ¯ exible tool that
Implementation can be used in isolation or to support other strategies.
Implementation from the ® rst study has included the Enthusiasm is growing, particularly as the Government
initiating partner freezing changes on a project until pushes for productivity and process improvement
close to the end, at which time a lump sum is handed (Barrett, 1998). In the construction industry interest
to the client. This highlights how much the changes is gaining momentum. However, it is still the case
will cost and the potential delay likely, which is that benchmarking is more often `sold’ initially on the
hoped will encourage the client to decide against some opportunity to gain hard benchmarks rather than
of them. In addition, the forum with which most of the underlying improvements.
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Sage, Beverly Hills, CA. UK.
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Management New Directions, Blackwell, Oxford. competitive industry: using process improvement to gain
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