PISA, Italy-Workers started removing two sets of steel suspenders attached to leaning Tower of Pisa on Tuesday, in one of final phases of the bold plan to partly straighten famously tilted monument.
340-foot-long cables had been recurred to tower in 1998 as the precaution if required to be yanked back up while soil under its foundation was being excavated. Anchored to huge winches dug into ground about 100 yards from tower, suspenders have not been required.
Removal of suspenders will be finished in time for the inauguration ceremony of newly straightened tower scheduled for June 16, said Paolo Heiniger, who oversees project.
Tower was closed to public more than the decade ago, when officials feared it was starting to lean so much that it might topple over.
Work to stop tower's increasing tilt has taken far longer than scheduled, but officials anticipate it to be open to tourists in fall. When work started, tower leaned 13 feet, off perpendicular on its south side. By removing the small amount of soil, tower has settled better and leans about sixteen inches less-nearly tilt it had 300 years ago.
Decrease in lean is not adequate for naked eye to detect but enough to stabilize monument, experts have said.
Use fact that tower was 184.5 feet tall when it stood upright to reply the questions given below:
a) Article defines that when work started tower leaned 13 feet, off perpendicular. Draw the sketch and label two measurements.
(b) How high is tower with the lean?
(c) Find degree measure of the lean?
(d) Article also states that tower now leans 16 inches less. Sketch the new diagram which illustrates this measurement.
(e) Determine degree measure of lean?
(f) Determine height of tower with this lean?