AEC+P+F INTEGRATION WITH GREEN PROJECT DELIVERY AND LEAN FOCUS

With the launch of the U.S.Green Building Council’s Leadership in Energy and Environmental Design(LEED^(■))rating system,new building construction in the United States has rapidly begun adopting this guide as the standard for sustainable building.The rating system profoundly alters the design and operation of buildings,however,to date,little has been documented on the cumulative effects of the rating system across different phases of the project lifecycle:planning,architecture/design,engineering,construction and operational facility management(AEC+P+F).Further,the ability to gain efficiencies in the building phase itself is still unknown.Implications of the delivery system in LEED^(■)attainment also have not been clearly associated with the level of AEC+P+F integration.To pursue this goal,project participants are becoming involved earlier in the process;information exchanges take place throughout the project lifecycle;and the results of those frequent exchanges impact the value to the owner through focus on attainment of a particular green rating score.These features are confi guring a framework for green project delivery.This framework approaches lean thinking by generating value to the owner,improving the flow of information,and transforming the inputs required for the selection of materials and systems,to outputs in the form of a sustainability rating certification.This research focuses on exploring associations between LEED^(■)criteria,project lifecycle,the stakeholders’interests,lean process improvements and typical delivery systems used in building construction.The paper proposes a matrix of weighted indexes to explain and provide increased collaboration among project participants,improved efficiency throughout the project lifecycle,and new techniques which may be incorporated into the construction process.

ACHIEVING THE NET-ZERO-ENERGY-BUILDINGS “2020 AND 2030 TARGETS” WITH THE SUPPORT OF PARAMETRIC 3-D/4-D BIM DESIGN TOOLS

INTRODUCTION The level of man-made CO_(2) emissions worldwide climbed to a new record of 30 billion tons in 2010.In 2011,at the COP17 U.N.Climate Change Conference in Durban,South Africa,high-ranking representatives from around the world met again to discuss solutions.For the building sector,numerous energy-efficiency market changes and benchmarking resolutions,like the mandatory E.U.“nearly Net-Zero-Energy-Building(NET-ZEB’s)2018 and 2020 regulations”for all new public and privately owned buildings are now set up to help minimizing carbon emissions and reverse the negative impact.1 In the United States,the American Institute of Architects(AIA)adopted the 2030 Challenge as a voluntary program,where participating buildings aim to achieve a 90%fossil fuel reduction by 2025,and carbon-neutrality by 2030.2 To accomplish these energy goals,designers must strive to best design and utilize the resources available on a site.However,are these goals of achieving carbon-neutral buildings possible?How can NET-ZEB’s become the curricular standard and practical routine in education and the profession?To date,the basic curricular design process components with integrated project delivery metrics for a robust 3-D/4-D-net-zero regulatory design framework are either incomplete or missing,However,formally-based curriculums have begun to weave carbon-neutral design tools into their pedagogy.This research paper critically compares how these new criteria for digital 3-D-building information modeling(BIM),and“Integrated Project Delivery”are mandating a better integration of collaborative carbon-neutral designs into the curriculum and practice of the profession.The majority of those in architectural academia have been using generative computation primarily for pure,aesthetic form-finding,without applying zero-carbon-energy-driven global performance metrics and CO_(2)e reduction strategies to reiterate derived carbon-neutral designs.The advantage of 3-D-parametric design is that it links variables,dimensions,and materials to geometry in a way that when an input or simulation value changes,the 3-D/4-D model automatically updates all life-cycle scenarios and components simultaneously.