REHABILITATION OF NCC RIVER HOUSE
Notice bibliographique
Résumé
The federally recognised heritage NCC River House building (originally known as the ONEC Boathouse) was completed in 1925. The original building structure consisted of a quasi-moment frame, made up of structural steel beams and columns, with dimensional timber framing for the roofs, floor decks, and exterior curtain walls. The steel structure was founded on concrete piers bearing on the deep clay bed of the Ottawa River. The Ottawa region is classified as an area of moderate seismic risk (design PGA 0.372). A major revitalisation of the building was performed during 2019-2022. As per owner requirements, a seismic check based on modern design codes had identified significant deficiencies in the existing lateral force resistance of the moment frame: specifically, a lack of capacity of the steel columns under seismic-induced combined axial and moment demands. The existing timber roof structure also showed significant creep deflections with design checks determining its inadequacy for supporting snow loads. Therefore, significant structural upgrades were undertaken as part of the rehabilitation project. In lieu of upgrading the steel moment frames, the existing lumber curtain walls were repurposed as wood-panelled shear walls with a combination of new dimensional and glue-laminated timber posts at their ends. With window locations generally occurring at one-third spans of the beams, the seismic overturning moment was directed away from the steel frame and into the new, stiffer shear walls ends acting as a force couple through the new posts onto the existing steel beams in the vertical direction. Existing floor framing was strengthened for in-plane diaphragm behaviour through the installation of new plywood panels, with existing floor beams acting as tension/compression ties. The existing roof was upgraded by constructing new trusses in-situ using new glue-laminated timber top chords with steel tension ties installed at the attic floor level. Where the roof framing was interrupted by dormers, laminated veneer lumber ridge beams were added, bearing on the new trusses. With Canada being a world leader in sustainably produced timber products, strengthening and upgrading the existing building using mainly wood-based products was a compelling solution. These products are readily available within Canada, are economic, act as a carbon sink, and are complementary to the heritage timber building materials already in the building.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
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)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
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 découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».