What are the actual barriers and drivers for sustainable building? A literature review, interviews and case studies are presented to address this question. Sustainable building is not hindered by a lack of technologies and assessment methods, but is instead beset with organizational and procedural difficulties entailed by the adoption of new methods. New technologies are resisted because they require process changes entailing risks and unforeseen costs. These hindrances can be reduced by learning what kind of decision-making phases, new tasks, actors, roles and ways of networking are needed. The barriers are outlined as steering mechanisms, economics, a lack of client understanding, process (procurement and tendering, timing, cooperation and networking), and underpinning knowledge (knowledge and common language, the availability of methods and tools, innovation). The most important actions to promote sustainable building are the development of the awareness of clients about the benefits of sustainable bui...

Barriers and drivers for sustainable building

Key factors of sustainability in project management context: A survey exploring the project managers' perspective

Construction labor productivity has become such a buzz word and one of the most frequently researched topics. In most countries, labor cost comprises 30 to 50% of the overall project’s cost, and thus is regarded as a true reflection of the economic success of the operation. There are many challenges facing the construction industry in the state of Kuwait but one of the most important is low productivity. The objective of this research, therefore, is to identify and rank the relative importance of factors perceived to affect labor productivity on construction sites in Kuwait. To achieve this objective, a statistically representative sample of contractors was invited to participate in a structured questionnaire survey, comprising 45 productivity factors, classified under the following four primary groups: (1) management; (2) technological; (3) human/labor; and (4) external. Among the factors explored, the subsequent 10 are discerned to be the most significant in their effects on labor productivity: ...

Factors Affecting Construction Labor Productivity in Kuwait

Critical analysis of green building research trend in construction journals

This research identifies 50 processes and categorizes them into a framework for integrating and evaluating social considerations in construction projects. These processes focus on the planning and design phases because they offer the greatest potential for influencing project performance. The concept mapping research method was applied to develop this framework on the basis of input from 25 experts in academia, industry, and government. Multidimensional scaling and hierarchical cluster analyses were used to organize the experts' input into six categories defining social sustainability in construction projects: stakeholder engagement, user considerations, team formation, man- agement considerations, impact assessment, and place context. Although previous research has recognized social sustainability as a series of processes, this study is the first to integrate them into a comprehensive framework. Practitioners can benefit from this framework, which will enhance existing sustainability assessment methods and help address the challenge of developing truly sustainable projects. This framework also provides academics with a tool for introducing students to social sustainability in construction projects. Future research could use this framework as a baseline, developing metrics using the processes included in the framework. DOI: 10.1061/(ASCE)CO.1943-7862.0000566. © 2013 American Society of Civil Engineers. CE Database subject headings: Sustainable development; Social factors; Design; Planning; Construction; Safety. Author keywords: Sustainable development; Social factors; Design; Planning; Construction; Safety.

/pdf/social-sustainability-considerations-during-planning-and-2wsaylpkls.pdf

Social Sustainability Considerations during Planning and Design: Framework of Processes for Construction Projects

Construction contractors have significant constructability expertise to contribute to the design process of projects. To utilize this expertise most effectively, the right information must be made available to the design team at the proper point in time and at the appropriate level of detail. Current methods for utilizing construction knowledge in design have made significant advances to improving projects. However, they are typically rudimentary: unstructured, not very efficient, and rely heavily on reviews. Organizing constructability information according to its use in the design process will allow project teams to take the best advantage of the construction expertise. This paper introduces a model for organizing constructability information based on timing and levels of detail. The model differs from current approaches because of this focus. How the model was developed is described. It is tested on six case study projects to assess applicability on different projects. An illustrative example is provid...

Organizing Constructability Knowledge for Design

Building and other capital projects usually have a clear distinction between project development phases (i.e. design and construction), and the operations and maintenance phases of a facility. Over the life of the facility, operations and maintenance expenses often far exceed the initial cost of a facility. Importantly, the decisions made early in a proj ect have a strong affect on the life cycle costs of a building. Operation and maintenance knowledge needs to be incorporated early in design to make these critical decisions. High performance green building projects extensively use methods to evaluate the impact of design features over the life of the facility. Techniques such as life cycle cost analysis, energy modeling, and daylight simulation help to evaluate long term impacts of building features. Project delivery methods strongly affect the way project teams are brought together, thus impacting the quality of decisions made in a project. Design -Build has been shown to introduce often crucial and reliable construction input during design to improve the performance of a project. Likewise, the Design-Build-Operate-Maintain (DBOM) project delivery system brings critical operations and main tenance knowledge into design. With this knowledge, better decisions can be made resulting in a higher performing building. A s a result, a more efficient and sustainable fa cility will be turned over to the owner. A review of literature reveals that DBOM has not yet been widely adopted to achieve sustainable project goals. This paper defines the DBOM delivery system, explores the benefits of DBOM, investigates the ability of DBOM to achieve important sustainable initiatives and concludes that this is a promising development for the advancement of sustainable projects.

Evaluating Design-Build-Operate-Maintain Delivery as a Tool for Sustainability

Sustainable design and constructability are two keys for efficient design and construction that are often addressed separately from each other in projects. This paper examines the integration of these two initiatives on the Pentagon renovation. The examination exposes a synergistic relationship between sustainable design and constructability. This relationship strives to efficiently utilize resources and reduce waste in the project. The integrated organizational structure and design-build performance based contracting strategies at the Pentagon have assisted in the implementation of sustainable design and constructability. Connections between the two initiatives were found at the conceptual level, system level, materials level and in the design implementation process. Importantly, the analysis of the Pentagon reveals that the potential to improve the sustainability and the constructability of a project is enhanced when the two initiatives are integrated and approached in a combined fashion.

Synergies between Sustainable Design and Constructability at the Pentagon

Sustainable building projects have levels of complexity over conventional building projects that challenge current project management tools at efficiently managing the rigors of sustainable projects. The Continuous Value Enhancement Process (CVEP) is a recently developed tool designed specifically for sustainable building projects. This project management tool enables project teams to systematically generate and evaluate project alternatives for meeting sustainable goals. The goal of this tool is to identify high performance solutions that increase levels of sustainability and improve project performance. CVEP was experimentally implemented and tested on four case study projects to evaluate its ability to support project management decision making in ways that elevate sustainability and project performance. Reported in this paper, the results show CVEP produced first cost and life cycle cost savings. In particular, the study confirms that CVEP has the capability to: 1.) Provide a systematic evalu...

/pdf/case-study-validation-of-the-continuous-value-enhancement-20c3sv5ipj.pdf

Case Study Validation of the Continuous Value Enhancement Process

Constructability Knowledge Management in Sustainable Design

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