Abstract
Abstract. In this paper, we explore the evolution of modelling practices used to develop three significant Heritage Building Information Models (HBIM) on Canada’s Parliament Hill National Historic Site – West Block, Centre Block, and The Library of Parliament. The unique scope, objective, and timeline for each model required an in-depth analysis to select the appropriate classification for Level of Detail (LOD) and Level of Accuracy (LOA). With each project, the refinement of modelling practices and workflows evolved, culminating in one of our most complex and challenging projects – the Library of Parliament BIM. The purpose of this paper is to share ideas and lessons learned for the intricate challenges that emerge when using LOD and LOA classifications including trade-offs between model performance, tolerances, and anticipated BIM use. In addition, we will evaluate how these decisions effected managing the digitization, data processing, data synthesis, and visualisation of the models.
Highlights
In 2012, Public Services and Procurement Canada (PSPC) and the Carleton Immersive Media Studio (CIMS) began a research partnership to explore the application of digital technologies for architectural rehabilitation and heritage conservation
We focus on the evolution of our BIM practices on Parliament Hill stemming from the research initiative with PSPC, and address the challenges in selecting the appropriate Level of Detail (LOD), and Level of Accuracy (LOA) / model tolerance
The increased complexity of the building required the augmentation of our existing protocols and development of novel ones to capture the LOD and LOA required for the specific BIM uses
Summary
In 2012, Public Services and Procurement Canada (PSPC) and the Carleton Immersive Media Studio (CIMS) began a research partnership to explore the application of digital technologies for architectural rehabilitation and heritage conservation. The Parliament Hill National Historic Site of Canada is comprised of the Centre Block, East Block, West Block, and Library of Parliament and is Canada’s most recognized national monument. As both the political and symbolic locus of Canada’s parliamentary democracy, the site is in every sense a stage where Canada’s nationhood is played out for national and international audiences. The Parliament Hill National Historic site is admired for its exemplary Gothic Revival style. Both the grounds and buildings are recognized for their heritage significance and have been designated as Federal Heritage Buildings (FBHRO). The East Block will see two phases of rehabilitation — the first beginning in 2017 and the second phase in the near future
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