In the case of a truss bridge, a post-tensioned slab bridge, or a box girder bridge the sections are often floated to the bridge and then lifted into place by cranes on barges or cranes sitting over piers.
The very good reason why the word communism is so commonly associated with these revolutionary, anti-liberal, anti-democratic Marxists is that political parties with communist in the name were pretty much invariably of that bent throughout the 20th century, whereas parties called socialist or social democrat or labor varied enormously in ideology.
red communism sign image by Alexey Klementiev from Fotolia.com. The economic system of communism puts all planning of the economy in the hands of the government. A communist society distributes ownership of property evenly among every member.Because of the immense power of the state, small business is almost nonexistent in a communist society.arl Marx developed the ideas of communism during the 1840s in his seminal work The Communist Manifesto.. During his time, Marx believed that liberal society offered workers only the illusion of the freedom of religion and property.