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ROOF BREAK [2 records]

Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2016-02-26

English

Subject field(s)
  • Underground Mining
DEF

The rock above the immediate roof.

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.

OBS

Immediate roof: Lowest layer or layers of rock immediately above an underground opening.

PHR

Main roof break.

French

Domaine(s)
  • Exploitation minière souterraine
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 [...]

PHR

Cassure d'affaissement, cassure d'exploitation (du, au) toit.

Spanish

Save record 1

Record 2 2013-11-22

English

Subject field(s)
  • Roofs (Building Elements)
  • Structural Framework
DEF

A strip of wood, fixed to the upper side or rafters at the eaves of a roof, which raises the edge of the eaves and forms a break in the roof line.

French

Domaine(s)
  • Toitures (Éléments du bâtiment)
  • Charpentes
DEF

Pièce de bois en sifflet rapportée sur la partie inférieure d'un chevron, pour le prolonger et/ou pour donner à la partie inférieure d'un pan de toiture une moindre inclinaison [...]

Spanish

Campo(s) temático(s)
  • Techos (Elementos de edificios)
  • Estructuras (Construcción)
DEF

En la armadura de un tejado, madero superpuesto a un par del primer faldón para disminuir la pendiente.

CONT

Los pares que forman los faldones acometen sobre el estribo, que siempre solía situarse [...] en la cara interior del muro. Entonces, si directamente se dejase el faldón tal y como está y se tejase, el agua iría a parar a las cabezas de los muros, con los devastadores efectos que ello supondría. Obviamente, la solución viene añadiendo otro faldón sobrepuesto al anterior, que permita llevar el agua hacia fuera. Los maderos que forman dicho faldón, llamados contrapares, al tener que partir de un punto intermedio de los pares originales y llegar más allá de la cara exterior de los muros, generan una pendiente menor que la original a la fuerza.

Save record 2

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