R RABBET RAIL

R RABBET Feuillure; Rainure; Refouillement; Guillaume

Construction; Carpentry; Equipment and Tools

1. An L-shaped notch carried out in a piece for receiving some another whose edges will come there to rest on. See Figure 1

   

   RABBET

   
   Figure 1

2. A narrow recess making in a part of work. Syn. with BACKBAND; GROOVE; REBATE;

3. Syn. with CHANNEL; FURROW; GROOVE; SLOT

4. A rabbet carried out in situ in a wooden member. Syn. with GROOVE

5. Syn. with RABBET(ING) PLANE

RABBET(TING) PLANE Guillaume

Equipment and Tools

A plane of shapes and various dimensions, used by stone masons to carry out moldings, edges, etc. Syn. with RABBET

RACE Canal

Railway and Canals

Syn. with CANAL; CHANNEL; CULVERT; FLUME

RACEWAY Chemin de roulement

Handling

Syn. with BALL RACE; CONVEYOR LINE; ROLLERPATH; RUNWAY; TRACK;

RACK Cr maill re

Temporary Construction

A decenter method deriving of the wedges system and that consists of a kind of triple wedge inserted between two notched soles situated between the centering and its supports. By acting on the rack in a direction or in the other, one can raise or lower the centering. (This system has hardly been used.)

RADAR Radar

Geophysics

A detection equipment used for the geophysical prospecting of soils and whose principle is somewhat similar to seismic sounding: a shorter electromagnetic impulse is emitted toward the basement, it is propagated in the materials that it comes through and reflects itself on the interfaces between two zones where the speed of the electromagnetic wave is different. One measures the times of...