TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
TOIT PRINCIPAL [4 records]
Record 1 - internal organization data 2016-02-26
Record 1, English
Record 1, Subject field(s)
- Underground Mining
Record 1, Main entry term, English
- main roof
1, record 1, English, main%20roof
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The rock above the immediate roof. 2, record 1, English, - main%20roof
Record number: 1, Textual support number: 1 CONT
There are two broad types of roof as far as support is concerned, the immediate roof above the coal and the main roof. Artificial support for mining purposes is only concerned with the immediate roof as nothing except large blocks of solid coal, or massive concrete, will support the main roof. ... Main roof is composed of strata above the immediate coal bed roof that forms the overburden to the surface. Frequently, the term is applied only to a massive, strong rock layer that does not break or bend until all of the coal is removed by pillaring or by longwall mining. 3, record 1, English, - main%20roof
Record number: 1, Textual support number: 1 OBS
Immediate roof: Lowest layer or layers of rock immediately above an underground opening. 2, record 1, English, - main%20roof
Record number: 1, Textual support number: 1 PHR
Main roof break. 4, record 1, English, - main%20roof
Record 1, French
Record 1, Domaine(s)
- Exploitation minière souterraine
Record 1, Main entry term, French
- toit supérieur
1, record 1, French, toit%20sup%C3%A9rieur
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- haut toit 2, record 1, French, haut%20toit
masculine noun
- toit principal 2, record 1, French, toit%20principal
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
S’il s’agit d’une taille à foudroyage, le toit immédiat casse et s’effondre le long d’une ligne parallèle au front de taille à quelques mètres de celui-ci; les éboulis foisonnés remplissent le vide, de sorte que le toit supérieur, à quelques mètres au-dessus, repose sur ces éboulis, qui jouent le rôle d’un remblai, et les tasse progressivement [...] 3, record 1, French, - toit%20sup%C3%A9rieur
Record number: 1, Textual support number: 1 PHR
Cassure d’affaissement, cassure d’exploitation (du, au) toit. 2, record 1, French, - toit%20sup%C3%A9rieur
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2001-07-09
Record 2, English
Record 2, Subject field(s)
- Construction Materials
Record 2, Main entry term, English
- freespan roof
1, record 2, English, freespan%20roof
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- self supporting roof 2, record 2, English, self%20supporting%20roof
correct
- self-supporting roof 3, record 2, English, self%2Dsupporting%20roof
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
... take shelter in an inner hallway or room, ideally in the basement or the ground floor. Do not use the elevator and stay away from windows. Avoid buildings such as gymnasiums, churches and auditoriums with freespan roofs. These roofs do not have supports in the middle and may collapse if a tornado hits them. If you are in one of these buildings take cover under a sturdy structure. 4, record 2, English, - freespan%20roof
Record number: 2, Textual support number: 2 CONT
He also claimed the roof was stronger and self supporting as it was built like an arch. This self supporting roof also didn't require interior supports. This lack of interior posts allowed for easier storage of hay and grain as many barns were built into the side of a bank or hill, allowing a wagon to be drawn into the maw and unloaded. 2, record 2, English, - freespan%20roof
Record 2, French
Record 2, Domaine(s)
- Matériaux de construction
Record 2, Main entry term, French
- toiture autoportante
1, record 2, French, toiture%20autoportante
feminine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
Le concept porte sur un bâtiment simple, fonctionnellement optimal, de même que très ouvert et accessible au public. La structure est constituée de 21 «arbres» en acier qui supportent le toit et autour desquels la façade se développe librement. [...] La dalle de toiture autoportante avec auvent suggère une continuité spatiale et crée ouverture et accessibilité. À l'intérieur, l'acier constitue le motif principal. Les arbres monumentaux et le développement de la structure du toit sont visibles partout et renforcés par la présence des autres matériaux. 2, record 2, French, - toiture%20autoportante
Record number: 2, Textual support number: 2 CONT
[...] abritez-vous dans un corridor ou une pièce la plus proche possible du centre de l’immeuble, idéalement au sous-sol ou au rez-de-chaussée. N’utilisez pas l’ascenseur et éloignez-vous des fenêtres. Évitez les immeubles à toiture autoportante comme les gymnases, les églises et les auditoriums. Le toit de ces immeubles n’est pas supporté au milieu et peut s’effondrer s’il est touché directement par la tornade. Si vous vous trouvez dans un immeuble de ce genre, abritez-vous sous une structure solide. 3, record 2, French, - toiture%20autoportante
Record 2, Key term(s)
- toiture auto-portante
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2001-07-03
Record 3, English
Record 3, Subject field(s)
- Structural Framework
- Roofs (Building Elements)
Record 3, Main entry term, English
- valley cutter 1, record 3, English, valley%20cutter
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record 3, French
Record 3, Domaine(s)
- Charpentes
- Toitures (Éléments du bâtiment)
Record 3, Main entry term, French
- noulet
1, record 3, French, noulet
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Ouvrage de charpente correspondant à la jonction de deux combles dont l’un est moins élevé que l’autre; le noulet est une sorte de ferme inclinée qui compose l’intersection de deux cours de charpente, dans le plan du versant le plus élevé. 2, record 3, French, - noulet
Record number: 3, Textual support number: 2 DEF
Sorte de ferme couchée formée de deux noues et placée à la pénétration d’un toit dans un autre toit plus développé en hauteur, notamment d’un toit de lucarne dans le toit principal. 3, record 3, French, - noulet
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 1976-06-19
Record 4, English
Record 4, Subject field(s)
- Structural Framework
Record 4, Main entry term, English
- composite truss 1, record 4, English, composite%20truss
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record 4, French
Record 4, Domaine(s)
- Charpentes
Record 4, Main entry term, French
- ferme composite 1, record 4, French, ferme%20composite
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Ferme de toit formée de contre-fiches en bois et de tirants en acier ou en fer forgé(sauf pour l'entrait principal qui est habituellement en bois pour simplifier l'assemblage 1, record 4, French, - ferme%20composite
Record 4, Spanish
Record 4, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: