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The Y level or wye level is the oldest and bulkiest of the older style optical instruments. A low-powered telescope is placed in a pair of clamp mounts, and the instrument then leveled using a spirit level, which is mounted parallel to the main telescope. The term dumpy level (also builder's level) endures despite the evolution in design. They ...
A ladder tournament (also known as a ladder competition [1] or pyramid tournament [2] [3]) is a form of tournament for games and sports. Unlike many tournaments, which usually have an element of elimination, ladder competitions can go on indefinitely. In a ladder competition, players are listed as if on the rungs of a ladder.
Common levelling instruments include the spirit level, the dumpy level, the digital level, and the laser level. Levelling staff – specialized measuring stick or vertical staff used with the dumpy level, held by a second person while the operator of the level looks through it and takes readings off of the staff. Also call a rod.
Various machine components used in mechanical engineering. Mechanical engineering is the study of physical machines that may involve force and movement. It is an engineering branch that combines engineering physics and mathematics principles with materials science, to design, analyze, manufacture, and maintain mechanical systems. [1]
In 2007, out of safety considerations, the original 15 feet (4.6 m) ladder was replaced with a new one by Chinese and international mountaineers. The original ladder is now on display at the Mount Qomolangma Museum in Tibet. [2] The Third Step is easiest to climb. Its climbing height is about 10 metres (33 ft), after which the summit snowfield ...
Earthquake engineering – is an interdisciplinary branch of engineering that designs and analyzes structures, such as buildings and bridges, with earthquakes in mind. Its overall goal is to make such structures more resistant to earthquakes. Earthquake-resistant structures – Earthworks (engineering) – Edge jointing – Endurance time ...
Liu volunteered to be a human ladder when the team reached the Second Step, which helped his teammates become the first to reach Everest's peak via the north face. [1] Although failing to reach the summit, he was soon thereafter described as the "human ladder of Mount Everest" and was awarded a National Sports Medal of Honor. [ 3 ]
A road, railway line, or canal is normally raised onto an embankment made of compacted soil (typically clay or rock-based) to avoid a change in level required by the terrain, the alternatives being either to have an unacceptable change in level or detour to follow a contour.