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dalle sur terre-plein

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n. f. · slab on grade (US) · ground-bearing slab (UK) · synonym: dallage (FR)

Definition

FR
Dalle en béton coulée à même le sol, sur une couche de forme, qui ne porte que son propre poids et les charges d'usage. Elle ne fait pas partie de la structure du bâtiment.
EN
A concrete slab cast directly on the ground, over a sub-base, that carries only its own weight and the use loads. It is not part of the building's structure.

Diagram

dalle sur terre-pleinslab on grade (US) · ground-bearing slab (UK)joint de retrait (sciage)saw-cut contraction jointforme (sous-couche)sub-basetreillis soudéwelded wire meshsol supportsubgradejoint périphériqueisolation jointCoupe sur une dalle sur terre-plein · schéma de principe, non à l'échelle
Section through a slab on grade.

Example sentences

Written (email, official document)

FRLa dalle sur terre-plein sera coulée dès que le bâtiment sera hors d'eau.

ENThe slab on grade will be poured as soon as the building is weathertight.

Spoken (standard)

FROn scie les joints de retrait demain matin, avant que le dallage ne fissure.

ENWe're saw-cutting the contraction joints tomorrow morning, before the slab cracks.

Spoken (informal)

FRLe dallage est fait, on peut rentrer le matériel.

ENThe slab's done, we can bring the equipment in.

Nuances and pitfalls

Two words, one element. Dalle sur terre-plein and dallage mean the same thing; dallage is the term used in the French standard (NF DTU 13.3).

Not a raft. A radier is a foundation that carries the building; a slab on grade carries only its own weight and the use loads.

Not a suspended floor. A suspended floor is carried by walls or beams; a slab on grade rests directly on the ground.

Related terms

radierfondationssemellebéton de propretéarmature

Regulatory and standard references

France
US
UK
NF DTU 13.3 (travaux de dallages, édition de décembre 2021)✓ In force as of 3 Oct 2026 (web search)
ACI PRC-360-10 (Guide to Design of Slabs-on-Ground)✓ In force as of 3 Oct 2026 (web search)
Concrete Society TR 34 (Concrete industrial ground floors)? Not verified

Legislation in force may differ from what is shown here.

Validation

Reviewed by Raphaël B. · 3 Oct 2026

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