Brickwork carried out from the face of a wall in projecting courses for the purpose of supporting a load such as that brought by a wall-plate, as shown in Fig. 145, or the end of a beam, is called Corbelling. All the projecting bricks should be laid as headers, and should not project more than a quarter of a brick beyond the course below, although, where extra strength is required, this projection should be reduced to one-eighth of a brick. Where wall-plates have to be carried, the greatest projection should not be less than 4 1/2

Footings Copings Cornices Corbels Damp Proof Cours 320 Footings Copings Cornices Corbels Damp Proof Cours 321 Footings Copings Cornices Corbels Damp Proof Cours 322 Footings Copings Cornices Corbels Damp Proof Cours 323 Footings Copings Cornices Corbels Damp Proof Cours 324 Footings Copings Cornices Corbels Damp Proof Cours 325 Footings Copings Cornices Corbels Damp Proof Cours 326 Footings Copings Cornices Corbels Damp Proof Cours 327

Fig. 144.

inches, and the topcourse of the corbel should bedoubled. It is always best to build corbels in cement mortar.

Footings Copings Cornices Corbels Damp Proof Cours 328

Fig. 145.