Define lattice work free#

As a result, the cost to build these structures can run into the hundreds of millions. They are built to a higher standard to support the weight of the oil platforms built on top of them and because of the forces to which they are subjected. The steel lattice truss for these structures, known as jackets in the oil industry, are typically far more robust and reinforced than their land-based counterparts, sometimes weighing more than 50,000 tons as is the case for the Bullwinkle and Baldpate platforms, whereas tall (above 1,000 feet) land-based lattice towers range from a high of 10,000 tons as is the case in the Eiffel Tower to as low as a few hundred tons. Since a large portion of these towers is underwater the official height of such structures is often held in dispute. These structures are usually built in large pieces on land, most commonly in Texas or Louisiana, and then moved by barge to their final resting place.

The majority of the tallest steel lattice towers in the world are actually built in water and used as oil platforms. Tokyo is the only other city in the world that has more than one above that height. The city most renowned for lattice towers is Cincinnati, Ohio, which features four towers above 900 feet in height. The Petronius Compliant Tower is the tallest supported lattice tower at 640 metres (2,100 ft), being partially submerged.

Define lattice work free#

The tallest free standing lattice tower is the Tokyo Skytree, with a height of 634 metres (2,080 ft). In Germany, the last big radio towers consisting of wood were the transmission towers of the Golm transmitter and the transmitter Ismaning. Most wood lattice towers were demolished before 1960. It had a height of 190 metres (620 ft) and was built in 1934 and demolished in 1945. The tallest wooden lattice tower was at Mühlacker, Germany. Occasionally lattice towers consisting of wood were utilized. Lattice towers are often designed as either a space frame or a hyperboloid structure.īefore 1940, they were used as radio transmission towers especially for short and medium wave.

Square (4-sided) lattices are also widely used and are most common in Eurasia. Lattices of triangular (3-sided) cross-section are most common, particularly in North America.

In structural engineering the term lattice tower is used for a freestanding structure, while a lattice mast is a guyed mast supported by guy lines. Its advantage is good shear strength at a much lower weight than a tower of solid construction would have as well as lower wind resistance. This construction is widely used in transmission towers carrying high voltage electric power lines, in radio masts and towers (a self-radiating tower or as a support for aerials) and in observation towers. It was built in 1889, and was the tallest man-made structure in the world until 1930.Ī lattice tower or truss tower is a freestanding vertical framework tower. The Eiffel Tower, measuring 1,083 feet from base to tip, is perhaps the most famous example of a lattice tower.