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Filter results by subject field Alphabetical list of terms

Filter results by subject field

Alphabetical list of terms

Record 1 2012-06-15

English

Subject field(s)
  • Descriptive Geometry
  • Analytical Geometry
  • Engineering Tests and Reliability
DEF

The effective unsupported length of a uniform column divided by the least radius of gyration of the cross-sectional area.

French

Domaine(s)
  • Géométrie descriptive
  • Géométrie analytique
  • Fiabilité, contrôle et essais (Ingénierie)
DEF

rapport de la longueur d'un solide de section droite constante à son plus petit rayon de giration. [Définition normalisée par l’AFNOR et reproduite avec son autorisation.]

OBS

rapport d'effilement : terme normalisé par l'AFNOR.

Spanish

Save record 1

Record 2 2011-10-17

English

Subject field(s)
  • Stairs and Stairways
DEF

Hanging steps. Steps which are built into a wall at one end and are unsupported at the other end.

OBS

Cantilever step. A step in a flight of steps or a staircase,(once of stone, now usually of concrete) which is built into the side wall of the stair and is unsupported at its other end. Sometimes the riser of the step will bear for its whole length on the tread of the step below it.

Key term(s)
  • hanging stairway
  • overhanging steps
  • overhanging stair
  • hanging step
  • cantilevered stairs
  • cantilever step

French

Domaine(s)
  • Escaliers
DEF

Escalier suspendu. [Escalier] dont les volées ont un seul côté en appui, contre un mur.

CONT

Escaliers hélicoïdaux [...] ils sont réalisés sous deux formes classiques : [...] escaliers à noyau central; [...] marches (sans contremarches) posées et étayées une à une, encastrées dans le mur d'échiffre extérieur de la cage. Solution beaucoup plus rare (mise en place et réglage élément par élément) qui peut dégager un jour central plus ou moins important : escaliers suspendus.

CONT

L'escalier adossé a ses marches encastrées à une extrémité dans le mur qu'il longe; l'autre extrémité peut être soit en surplomb, sans autre appui que le mur d'adossement, soit prendre appui sur un mur d'échiffre, avec ou sans limon.

Spanish

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Record 3 1999-05-11

English

Subject field(s)
  • Mining Equipment and Tools
DEF

A plough-type machine hauled by endless chain at a speed of 6 f. p. s. The ram scraper is pressed towards the face by the tension of the return strand, the return sheave being located inbye for this purpose. The minimum seam thickness is 10 in. in manless(unsupported) faces, and 14 in. in timbered faces; maximum length of face 130 yd; suitable gradient 25-70°.(Could be developed for 0-25° gradients by assistance to flow of coal). A three-shift working continuous mining machine.

French

Domaine(s)
  • Outillage et équipement (Exploitation minière)
CONT

Le rabot bélier a [été conçu] en Bavière, pour les couches minces de la mine de Peissenberg, il est utilisable à partir de 0,40 m de puissance, pour des tailles longues et en charbon dur. Il nécessite toutefois un bon toit. Son principe est le suivant : la taille, chassante ou rabattante, avec ou sans remblayage, est inclinée, tête en avant, sur le pendage [...] Un outil, muni de pics [...] et tracté par une chaîne marine, se déplace le long du front. L'énergie cinétique et la pesanteur le font rebondir et les chocs de ses pics abattent le charbon. La chaîne est commandée par deux têtes, chacune de 32 ch, ancrées l'une en voie de tête [...] l'autre en voie de fond [...]

Spanish

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Record 4 1982-08-30

English

Subject field(s)
  • Deep Foundations
OBS

Unsupported Length and End Conditions. For portions unsupported laterally, piles should be designed as columns under direct load and also for any lateral forces expected.

Key term(s)
  • unbraced length

French

Domaine(s)
  • Fondations profondes
OBS

Longueur libre des pieux et conditions à la pointe. Les parties des pieux ne recevant pas de support latéral doivent être étudiées comme des colonnes libres, soumises à l'action des charges verticales et des forces latérales possibles.

Key term(s)
  • longueur non soutenue

Spanish

Save record 4

Record 5 1977-06-30

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] family Thecospiridae [are] cemented by [a] ventral umbo, [the] ventral interarea [is] entire, without differentiation of [a] pseudo-deltidium; [the] dorsal interarea is vestigral, [the] chilidium absent; [the] teeth are unsupported, [the] ventral muscle scar [is] small, divided by a low median septum; [the] cardinal process [is] high, functionally bilobed but united medianly to form [a] tripartite structure, [the] socket plates [are] recurved but continuous anteriorly with [a] pair of subparallel ridges containing [the] dorsal adductor field divided by [a] low median ridge; [the] cardinal process bases [are] prolonged into 2 short processes supporting [a] pair of spirally coiled calcareous ribbons directed ventrolaterally; [the] brachial ribbons [are] sharply folded throughout [their] length to give [a] V-shaped cross-section; [the] shell substance [is] pseudopunctate. "Trias".

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Thecospiridae [sont] caractérisés essentiellement par la fixation directe, au substratum, de la valve ventrale.

Spanish

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Record 6 1977-06-23

English

Subject field(s)
  • Paleontology
OBS

[Brachiopods of the] family Orthidae(...) [have the following] characteristics : the] interareas and hinge lines [are] of variable length, [the] delthyrium [is] open, [the] notothyrium rarely covered by [a] chilidium; [the] teeth [have] crural fossettes, [the] dental plates [are] variably disposed, [the] ventral muscle field [is] short, not extending much beyond [the] umbonal cavity, commonly suboval, [the] median adductor scars [are] not enclosed by diductors; [the] cardinal process [is] simple, ridgelike, [the] brachiophores [are] rodlike, unsupported; [the] ventral mantle canal system [is] saccate, [the] dorsal mantle canal system [is] saccate to digitate. M. Cam.-L. Dev.

French

Domaine(s)
  • Paléontologie
OBS

[Les Brachiopodes de la] famille des Orthidae (...) [ont le] delthyrium largement ouvert. [Le] processus cardinal [est] bien développé; [l'] aréa musculaire [est] ventrale, petite, ovale ou cordée; [les] empreintes ovariennes [sont] subréniformes (...). Cambrien moyen à la fin du Silurien.

Spanish

Save record 6

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