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.
No vice president exists. However, if the president is unable to perform his duties, the premier takes his place. Russia's legislative branch is its Federal Assembly, which consists of a 178-seat Federation Council and 450-seat State Duma representing the 21 Russian Republics and 66 independent regions and territories.