SEISMIC RETROFIT AND RESTORATION OF ST ANDREW'S WESLEY CHURCH
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Notice bibliographique
Résumé
St Andrew’s Wesley United Church has stood prominently in the Downtown area of Vancouver, BC, Canada since 1933. Designed by Twizell and Twizell, St Andrew’s is a remarkable example of gothic revival style traditional to Europe. Its construction used locally sourced stone, in combination with unreinforced concrete to create its soaring walls and massive arches. At a footprint of 2,277 square metres (24,500 SF), and standing over 27m (90ft) at its bell tower, it remains one of the largest places of worship in the City of Vancouver. It is also recognized as both a municipal and provincial heritage site, creating the need to be highly respectful when considering a visible alteration. After decades of natural deterioration, leaking roofs and reoccurring repairs led to a need for a significant intervention. Deteriorating plaster and clay tile that lined the interior of the church initiated a broader investigation of opportunities for conservation and repair, including a large-scale seismic upgrade. This led to a comprehensive project scope involving a seismic upgrade of the primary structure to 100% of the 2015NBCC; seismic restraint of façade stone; replacement of all mechanical and electrical systems; and a complete replacement of all interior plaster surfaces using “match cast†plaster shells to perfectly replicate the original appearance. Structurally, the heritage aspect required imposing a very tight lateral drift limit. We combined this with elements that were designed for controlled yielding at selected elevations that suited the flexural geometry of new shear walls, and to limit foundation forces. Gravity support elements, including the massive columns and arches supporting the roof were upgraded with carbon FRP wrapping to promote resilient behavior. This presentation will be a snapshot of how we were able to preserve and upgrade this architectural gem, while still maintaining its heritage significance. We will give insight on our thought process and the challenges we had to overcome to create a structural load path in a challenging existing building. This project was recognized locally, and nationally for its contribution to engineering excellence and heritage restoration. In 2022, RJC received the Canadian Consulting Engineering Award of Excellence, as well as the Association of Consulting Engineers of BC Award of Merit. This year RJC was further recognized by the City of Vancouver for Outstanding Achievement for Heritage Conservation.
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Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
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Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découle