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The InPro Lifecycle Design Framework for Buildings
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0002-5661-5237
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Structural and Construction Engineering.ORCID iD: 0000-0003-2402-1845
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2010 (English)Report (Other academic)
Abstract [en]

On average, by the time 1% of project costs are spent, roughly 70% of the lifecycle costof the building has been committed indicating that benefits of integration are largest inthe early phases of a project. The building shape, selected materials, structural system,internal room distribution, and building services systems are some of the most importantfactors that influence the costs of operation and upgrading throughout the lifecycle.The main goal of the InPro project is to shift focus from the detail design to the earlyphase where the majority of the decisions are taken that influence the total performanceof the building. Therefore, the work in task 2.4 has been aimed at developing an integratedformalized iterative lifecycle design where project goals can be matched againstkey performance indictors (KPI:s) in the design process. The methodology used is acombination of literature reviews; interviews with clients, contractors and energy consultants;the participants own experience; workshops and project meetings within theInPro consortium and the development of demonstration scenarios.The building life cycle treated in this report has been limited to the early design includingmainly the operational aspects on costs and environment. The effect of repair, replacementand demolishing has not been treated.The result of task 2.4 is the InPro life cycle design framework consisting of: The InPro Smart decision making where project goals and functional needs aremapped to building performance requirements. The InPro stage/gate design where the information maturity is adapted to theproject specific decision making process. The InPro lifecycle maturity levels to guide the project management using theInPro design framework. Change management procedures are applied on approvedmaturity levels in the Open Information Platform (OIP). The InPro workflow process between two decision quality gates containing performancerequirement processing, developing a design strategy, concurrentdesign and analysis process and information quality assurance.The InPro early design framework is demonstrated in three design scenarios with focuson energy performance, environmental assessment and operation.The following recommendations are made regarding the investigated life cycle aspect: Analysis of energy and indoor climate related KPI:s and comparison with performancerequirements can be made when the OIP maturity is such that indoorclimate simulation is possible to perform on room level. Energy performance analyses should be conducted before the structural andHVAC system design is finalized since the result will guide the structural andbuilding service designer in the selection of structural system, the buildingshell and the HVAC system. Training and commitment of the end users are also needed to motivate changetowards a more sustainability and energy saving behaviour of the users byproviding feedback and user-friendly control of building installations. The procedure for environmental evaluation is based on the LCA method andcomplemented with a check of the occurrence of hazardous chemical substances. Requirements on environmental performance should be clearly defined foreach project with respect to the client’s values.Report – The InPro Lifecycle Design Framework for Buildings ■ January 2010 6/164 Objects in the models need to be complemented with information that can belinked to cost information in building parts libraries to speed-up the cost estimationsprocess. However, the model based cost estimation covers only a partof the total Life Cycle Cost and need to be complemented with other investmentsand operational aspects not directly linked to the models.The following important actors/roles/competences have been identified in the earlystages of the InPro Life Cycle design framework: It is recommended that the client is actively involved not only via briefing sessionand decision-making at decision making quality gates, but also in the designthrough the open information platform giving access to monitor and interactdirectly with the design team throughout the design process. Energy and environmental analyst should actively take part in the design process,given the opportunity to affect the building design in the early phases of aproject. This will guide architects, structural engineers and HVAC designers ina more sustainable direction. The Facility and Maintenance specialist plays an important role bridging thegap between design and construction and operations. Their knowledge and experienceprovide valuable contribution in the early design process of a buildingslife cycle performance. A new role as project information manager is proposed handling model aggregationand the quality assurance of the information stored in the OIP. In a shared information environment like InPro the responsible and risk involvedwith quantity surveying must be resolved. It is suggested that onerole/actor is dedicated to the responsibility of quantity surveying and to updatequantities in the OIP when new design models are created or changed. Towork well, the risk as well as the quantity information needs to be sharedamong project participants.Regarding the implementation of the InPro Life Cycle framework the following steps arerecommended: The visualisation step: The participating organisation need to be trained inmodel based working routines where different design disciplines 3D models areaggregated in digital mock-ups. Gains in clarification of project objectives forstakeholders and resolving of coordination issues between different design disciplinescan justify the relative inexpensive investments made on project level. The integration step rely on computer based methods to exchange data amongdifferent modelling and analysis application either using standard formats suchas IFC (International Foundation Classes) or propriety formats. Lessons fromthe manufacturing domain has shown that an integrated concurrent engineeringdesign process need to be stage/gated and supported by central repositoryof shared information under change management control. The integration stepwill be more expensive to implement and requires long term relations betweenparticipating organisations (over several projects).

Place, publisher, year, edition, pages
2010. , p. 164
National Category
Construction Management
Research subject
Construction Engineering and Management
Identifiers
URN: urn:nbn:se:ltu:diva-24328Local ID: a82a7a3f-c5b0-4207-93ee-0364d68b6a7eOAI: oai:DiVA.org:ltu-24328DiVA, id: diva2:997380
Note
Godkänd; 2010; 20111221 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2026-03-12Bibliographically approved

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http://www.inpro-project.eu/docs/InPro_LifeCycleDesignFramework.pdf

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Olofsson, ThomasSchade, JuttaMeiling, John

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