Beam bridges are often only used for relatively short distances because, unlike truss bridges, they have no built in supports. The only supports are provided by piers. The farther apart its supports, the weaker a Beam bridge gets. As a result, Beam bridges rarely span more than 250 feet.
Russia Government type. Factbook > Countries > Russia > Government. Government type: semi-presidential federation. Definition: This entry gives the basic form of government. Definitions of the major governmental terms are as follows.
Information/Data on Russia's Political System. The Russian Federation is made up of 21 autonomous republics with the capital being in Moscow. It has a three branch system of goverment modeled after the United States. The executive branch is headed by Boris Nikolayevick Yelstin(since 12 June 1991).