Buch 
Tracts on vaults and bridges : containing observations on the various forms of vaults; on the taking down and rebuilding London Bridge : and on the principles of arches: illustrated by extensive tables of bridges : also containing the principles of pendent bridges, with reference to the properties of the catenary, applied to the Menai Bridge : and a theoretical investigation of the catenary / Samuel Ware
Entstehung
JPEG-Download
 

OBSERVATIONS

RESPECTING THE TAKING DOWN AND REBUILDING

LONDON BRIDGE .

ON THE NEW BRIDGE.

A committee of the House of Commons of thissession, (182i,) recommends'that the present London bridge should be taken down* and that a new bridge,of five arches, should be erected in the site of it.It is estimated to cost 450,000/., including a tempo-rary bridge, which is estimated at 20,000/., but notincluding the compensations to parties injured, norany consequent works from the alterations in thelevels of the banks above London Bridge . The esti-mate is made from a comparison, magnitude formagnitude, with the cost of Waterloo bridge ; andthe sum of 50,000/. is added for contingencies. Itis stated, that about 70,000 tons of stone will berequired, and that the bridge is to be faced withAberdeen granite, or granite of an equally hard anddurable quality.

The marble bridge of Santa Trinita of Elorence,so nobly rebuilt, che non si e costrutto ponte pinhello dacche si e rimessa la buona architettura,stands first in the scale or column of the specific