4*10

HISTORY OF ENGINEERING

Hook I.

The section through the arch exhibits the twenty-four voussoirs which lock the wholethe top of which is level with the upper portion of the architrave that rests on the twoDoric columns.

Fig. 443. SECTION THROUGH ARCH OP WATERLOO BRIDGE.

The abutments are of singular beauty, and comprise within them staircases to descendto the river at all times of the tide; from the increase in their width, both above and below

Fig. 444,

ABUTMENTS OP WATERLOO BRIDGE.

the bridge, greater security is given to the structure, and the eye is pleased by theadditional masonry.