Art,+Achievements+and+Monuments

= BRITISH EMPIRE ARCHITECTURAL MONUMENTS AND ACHIEVEMENTS =

The tower bridge
===**The bridge consists of two towers, which are tied together at the upper level by means of two horizontal walkways which designed to withstand the horizontal forces exerted by the suspended sections of the bridge on the landward sides of the two towers. ** ===

Construction
=== === **The bridge is 800 ft (244m) in length with two towers each 213 feet (65m) high, built on piers. The central span of 200 feet (61 m) between the towers is split into two equal bascules or leaves, which can be raised to an angle of 83 degrees to allow river traffic to pass. The bascules, weighing over 1,000 tons each, are counterbalanced to minimize the force required and allow raising in five minutes. ** **The two side-spans are suspension bridges, each 270 feet (82 m) long, with the suspension rods anchored both at the abutments and through rods contained within the bridge's upper walkways. The pedestrian walkways are 143 feet (44 m) above the river at high tide. **

The Nelson Column
**Nelson's Column is a monument in Trafalgar Square in central London built to commemorate the death of Admiral Nelson at the Battle of Trafalgar in 1805. The monument was constructed between 1840 and 1843 to a design by William Railton at a cost of £47,000. The sandstone statue of Nelson is by E. H. Baily and the four bronze lions on the base, added in 1867, were designed by Sir Edwin Landseer. The column itself is built of granite from Dartmoor. The Nelson column was built between 1840 and 1843. **
 * The column has been climbed several times, both for entertainment and as a publicity stunt. It was refurbished in 2006 at a cost of £420,000, during which it was surveyed and found to be 4.4 metres shorter than previously supposed. The whole monument is 169 ft 3ins (51.59 metres) tall from the bottom of the pedestal to the top of Nelson's hat. **

Bernie