newly-laid concrete
71Snowmelt system — A snowmelt system is used to remove snow and ice via embedded electric cables or hydronic PEX tubing. Common areas for snowmelt systems are: driveways, walkways, parking areas, stairways, loading docks, and around car washes. A snowmelt system is …
72bridge — bridge1 bridgeable, adj. bridgeless, adj. bridgelike, adj. /brij/, n., v., bridged, bridging, adj. n. 1. a structure spanning and providing passage over a river, chasm, road, or the like. 2. a connecting, transitional, or intermediate route or… …
73Dujiangyan Irrigation System — For the adjacent city, see Dujiangyan City. Mount Qingcheng and the Dujiangyan Irrigation System * UNESCO World Heritage Site …
74Beijing city fortifications — The city wall of Beijing was a fortification built around 1435. It was 23.5 km long. The thickness at ground level was 20m and the top 12m. The wall was 15m high, and it had nine gates. This wall stood for nearly 530 years, but in 1965 it was… …
75History of the Panama Canal — The history of the Panama Canal goes back almost to the earliest explorers of the Americas. The narrow land bridge between North and South America offers a unique opportunity to create a water passage between the Atlantic and Pacific oceans. This …
76ancient Greek civilization — ▪ historical region, Eurasia Introduction the period following Mycenaean civilization, which ended in about 1200 BC, to the death of Alexander the Great, in 323 BC. It was a period of political, philosophical, artistic, and scientific… …
77DEFENSE FORCES — Ottoman and Mandatory Periods (1878–1948) The development of the self defense force of the yishuv was an influential part of the history of Jewish settlement in Ereẓ Israel. In the last quarter of the 19th century, when the first Jewish… …
78RUSSIA — RUSSIA, former empire in Eastern Europe; from 1918 the Russian Soviet Federative Socialist Republic (R.S.F.S.R.), from 1923 the Union of Soviet Socialist Republics (U.S.S.R.); from 1990 the Russian Federation. Until 1772 ORIGINS The penetration… …
79garden and landscape design — Introduction the development and decorative planting of gardens, yards, grounds, parks, and other types of areas. Gardening and landscape design is used to enhance the settings for buildings and public areas and in recreational areas and… …
80Road — This article is about a route, thoroughfare or way that supports travel by a means of conveyance. For a place outside a harbor where a ship can lie at anchor, see Roadstead. For public roads, see Highway. For other routes, see thoroughfare. For… …
