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.
The Russian Federation encompasses executive, legislative and judicial branches of government. The president, or Russian chief of state, represents the executive branch. Voters elect the president to a four-year term. The position is one of significant power, with the legislative branch subordinate to it.