The Greek islands are a unique phenomenon in Europe. Greece counts 6.000 islands and islets scattered in the Aegean and Ionian Seas. You can learn more here.
San Roque Dam (Philippines) The San Roque Dam, operated under San Roque Multipurpose Project (SRMP) is a 200-meter-tall, 1.2 kilometer long embankment dam on the Agno River. It is the largest dam in the Philippines and sixteenth largest in the world (see List of largest dams in the world).
CONCRETE FRAME STRUCTURES. Concrete frame structures are a very common-or perhaps the most common-type of modern building. As the name suggests, this type of building consists of a frame or skeleton of concrete. Horizontal members of this frame are called beams, and vertical members are called columns. Humans walk on flat planes of concrete called slabs. Of these, the column is the most important, as it is the primary load-carrying element of the building (See figure 2 at the bottom of the page for an illustration of each of the major parts of a frame structure).