Eugenio Pellicer

Organizational Improvement Through Standardization of the Innovation Process in Construction Firms

Abstract: The purpose of this article is to identify the drivers, success factors, benefits, and barriers to innovation in a medium size construction firm with a standardized innovation management system. The case study method is used to compare theory to reality from different perspectives, building explanations from a Spanish contractor observed over a three year period. Findings suggest that innovation management can be standardized, which leads to an organizational improvement for the company, and at the same time this improvement facilitates organizational problem-solving on a regular basis, increasing technical capabilities, knowledge management, business profit, and client satisfaction. The framework described in this research aims to provide guidance for managers, thus they can innovate in a systematic way; however, this exploratory study has still to be validated by empirical investigations on a larger scale through a significant number of certified companies, which is currently not yet the case in the Spanish construction industry.

Model for Systematic Innovation in Construction Companies

AbstractThe reasons that drive construction companies to innovate, as well as the processes they use, have not yet been fully explored in the construction management literature. This paper describes the “hows” and “whys” behind the push for innovation in a construction company. The research method is founded on the validation of a model developed by a case study; this is focused on a medium-sized construction company which implemented and certified an innovation management system, as established by a Spanish standard. The studies conducted by the authors over a five-year period generated a set of 18 propositions reflecting an explanatory model of innovation management. This paper reports on the external validation of this model by means of a set of interviews; the results fully corroborate 15 of these propositions. The strongest drivers of innovation in construction companies are technical problems in construction projects, client requirements, and upper management. Innovation opportunities are identified...

Integration of Occupational Risk Prevention Courses in Engineering Degrees: Delphi Study

Engineering syllabi often lack courses covering occupational risk prevention. In Spain, professional competences are awarded along with the completion of a university degree. This means that new graduates are certified in areas in which they have received little or no training, such as occupational risk prevention. However, the academic reforms established by the Bologna Process, which strives to homogenize university degrees throughout Europe, compels European universities to design new syllabi. The main goal of this paper is to define a framework for including occupational risk-prevention education in the new engineering syllabi. This exploratory research applied the Delphi methodology to a panel of 59 experts, using questionnaires assessed with a four-point Likert scale through two rounds. A website supported the information flow. According to the experts who participated in this study, education and training in occupational risk-prevention is essential for improving the safety culture within a company...

Employability of Graduate Students in Construction Management

AbstractThe economic crisis that currently affects some Western countries has reduced the employability of graduates in the construction industry. Nevertheless, many young professionals consider this situation as an opportunity to further their training, thus the higher enrollment in graduate programs in the construction industry. In light of this scenario, the authors of this paper sought to identify students’ perceptions of training gaps that affect their employability. The research was based on a case study, conducted in a Spanish graduate program (M.Sc.) in construction management during two consecutive academic years; a questionnaire survey was given to all of the enrolled students at the beginning of the first semester. The statistical analyses consisted of a principal-component analysis of the 21 variables listed as possible explanations for their graduates’ unemployment and an analysis of variance based on the previously noted principal components. Respondents recognized the intrinsic internal bar...

Social Sustainability in the Lifecycle of Chilean Public Infrastructure

AbstractTo enhance concern for the social aspects of sustainability and to delineate the criteria to be considered at each stage of the lifecycle of an infrastructure, this paper aims to determine the relevance of a set of criteria that evaluate social sustainability throughout the lifecycle of a public civil infrastructure. This research presents the results of a case study applying the Delphi method to 24 Chilean experts consulted in a series of three rounds. In addition, binomial statistical tests and Kendall’s coefficient were used to show the convergence of the experts. Thus, it was identified that of 36 initial criteria assessed at each stage of the lifecycle, the consideration of 20 is required at the design stage, 29 at the construction stage, 33 during operation, and 27 at demolition. The most relevant criteria, per lifecycle stage, were Stakeholder Participation (design and demolition stages), External Local Population (design stage), Internal Human Resources (construction and demolition stages)...

Survival Factors for Subcontractors in Economic Downturns

AbstractThis paper analyzes key issues facing subcontractors in the context of a severe economic crisis, aiming to detect the factors that are critical for the survival of the subcontractors. Although previous research efforts have analyzed factors related to subcontractor performance in regular financial conditions, there remains only sparse knowledge of how subcontractors are to survive when economic conditions become dire, as they have in recent times in the Spanish construction market. In this research, in-depth interviews with managers of relevant Spanish subcontracting companies were carried out, resulting in the identification of eight factors for subcontractor survival: project delivery method, demand, financial capital, relationship assets, managerial assets, human assets, legal framework, and geographic scope. The project delivery method used by the owner and also by the main contractor is mainly based on price. As a result, the subcontractors’ bids get lower, making them unsustainable in the lo...

The Fuzzy Project Scheduling Problem with Minimal Generalized Precedence Relations

In scheduling, estimations are affected by the imprecision of limited information on future events, and the reduction in the number and level of detail of activities. Overlapping of processes and activities requires the study of their continuity, along with analysis of the risks associated with imprecision. In this line, this article proposes a fuzzy heuristic model for the Project Scheduling Problem with flows and minimal feeding, time and work Generalized Precedence Relations with a realistic approach to overlapping, in which the continuity of processes and activities is allowed in a discretionary way. This fuzzy algorithm handles the balance of process flows, and computes the optimal fragmentation of tasks, avoiding the interruption of the critical path and reverse criticality. The goodness of this approach is tested on several problems found in the literature; furthermore, an example of a 15-story building was used to compare the better performance of the algorithm implemented in Visual Basic for Applications (Excel) over that same example input in Primavera© P6 Professional V8.2.0, using five different scenarios.This research was supported by the FAPA program of Universidad de Los Andes, Colombia. The authors would like to thank the research group of Construction Engineering and Management (INgeco) of Universidad de Los Andes, and the five anonymous referees for their helpful and constructive suggestions.

Estimating future bidding performance of competitor bidders in capped tenders

Research in Bid Tender Forecasting Models (BTFM) has been in progress since the 1950s. None of the developed models were easy-to-use tools for effective use by bidding practitioners because the advanced mathematical apparatus and massive data inputs required. This scenario began to change in 2012 with the development of the Smartbid BTFM, a quite simple model that presents a series of graphs that enables any project manager to study competitors using a relatively short historical tender dataset. However, despite the advantages of this new model, so far, it is still necessary to study all the auction participants as an indivisible group; that is, the original BTFM was not devised for analyzing the behavior of a single bidding competitor or a subgroup of them. The present paper tries to solve that flaw and presents a stand-alone methodology useful for estimating future competitors’ bidding behaviors separately.

Scoring rules and abnormally low bids criteria in construction tenders: a taxonomic review

In the global construction context, the best value or most economically advantageous tender is becoming a widespread approach for contractor selection, as an alternative to other traditional awarding criteria such as the lowest price. In these multi-attribute tenders, the owner or auctioneer solicits proposals containing both a price bid and additional technical features. Once the proposals are received, each bidder’s price bid is given an economic score according to a scoring rule, generally called an economic scoring formula (ESF) and a technical score according to pre-specified criteria. Eventually, the contract is awarded to the bidder with the highest weighted overall score (economic + technical). However, economic scoring formula selection by auctioneers is invariably and paradoxically a highly intuitive process in practice, involving few theoretical or empirical considerations, despite having been considered traditionally and mistakenly as objective, due to its mathematical nature. This paper provides a taxonomic classification of a wide variety of ESFs and abnormally low bids criteria (ALBC) gathered in several countries with different tendering approaches. Practical implications concern the optimal design of price scoring rules in construction contract tenders, as well as future analyses of the effects of the ESF and ALBC on competitive bidding behaviour.

Current models and practices of economic and environmental evaluation for sustainable network-level pavement management

Ground transportation infrastructures, particularly road infrastructure, are essential for economic and social development. The quality level that the user perceives is mainly determined by the pavement condition. More than 400 billion dollars are invested globally each year in pavement construction and maintenance; these tasks increase by 10% the environmental impact generated by vehicle operation. Therefore, a sustainable approach should be incorporated in the assessment of preservation alternatives that consider technical, economic, environmental, political and institutional aspects in an integrated manner over their life-cycle. The purpose of the present research is to examine the models and practices for the economic and environmental evaluation of pavement assets, in order to analyze the advantages and limitations of the current state of the practice and identify the opportunities to improve their sustainable management. One of the main limitations identified is the lack of models that consider the economic and environmental aspects integrally. A need for models which consider the impact on users in work zones, as well as the use of new technologies and recycled materials that are more respectful of the environment, has been detected.