GABBRO GAS CLASSIFIER

GABBRO Gabbro

Geology

A plutonic rock with a composition similar to that of basalt.

GABION Gabion

Foundation

Syn. with CRIB.

GABION WALL Mur de gabions

Construction Term

A construction made of a stacking of cribs mounted at the foot of a side of a bank or a landslide to be used as a self-draining stop.

GABOON Okoum

Building Materials

Syn. with AFRICAN MAHOGANY; GABOON MAHOGANY; OKOUME

GAIN Embr vement

Construction Term

Syn. with BEVEL SHOULDER

GAIZE Gaize

Geology

A siliceous sedimentary rock used after grinding as additive for Portland cement with the aim of improving the concrete and mortar strength to the chemical action of seawater. Syn. with FRIABLE SANDSTONE WITH SLIGHT SILICEOUS CEMENT

GAIZE CEMENT Ciment la gaize

Hydraulic Binders

A binder in which is mixed some proportion of baked gaize.

GALL Galle

Defects (Building Materials)

A blister formed by the attack of insects on the surface of a wood. This deterioration is more or less serious according to the use at which the timber is intended for.

GALLERY Fen tre; Galerie; Voie de communication

Construction; Civil Engineering Structure

1. The subsidiary gallery of a deep tunnel used as point of intermediate attack during the heading and that enables also the evacuation of excavated materials. After execution of the tunnel, it is walled, or supplied with gates.

2. A work of reduced section accommodated within some works of larger dimensions to allow the inspection of it, or to place pipes there. The gallery can be built parallel to a work...