Accommodation ladderAn accommodation ladder is a foldable flight of steps down a ship's side. Accommodation ladders can be mounted parallel or perpendicular to the ship's board. If the ladder is parallel to the ship, it has to have an upper platform. Upper platforms are mostly turnable. The lower platform (or the ladder itself) hangs on a bail and can be lifted as required.
Attic ladderAn attic ladder (US) or loft ladder (UK) is a retractable ladder that is installed into an attic door/access panel. They are used as an inexpensive and compact alternative to having a stairway that ascends to the attic of a building. They are useful in areas with space constraints that would hinder the installation of a standard staircase. Attic ladders typically consist of a ladder with wider steps and a steep slope.FiberglassFiberglass (American English) or fibreglass (Commonwealth English) is a common type of fiber-reinforced plastic using glass fiber. The fibers may be randomly arranged, flattened into a sheet called a chopped strand mat, or woven into glass cloth. The plastic matrix may be a thermoset polymer matrix—most often based on thermosetting polymers such as epoxy, polyester resin, or vinyl ester resin—or a thermoplastic.
Vertical and horizontalIn astronomy, geography and related sciences, a line or plane passing by a given point is said to be vertical if it contains the local gravity direction at that point. Conversely, a line or plane is said to be horizontal (or leveled) if it is perpendicular to the vertical at a given point.
HoneyHoney is a sweet and viscous substance made by several species of bees, the best-known of which are honey bees. Honey is made and stored to nourish bee colonies. Bees produce honey by gathering and then refining the sugary secretions of plants (primarily floral nectar) or the secretions of other insects, like the honeydew of aphids.
MesolithicThe Mesolithic (Greek: μέσος, mesos 'middle' + λίθος, lithos 'stone') is the Old Worldarchaeological period between the Upper Paleolithic and the Neolithic. The term Epipaleolithic is often used synonymously, especially for outside Northern Europe, and for the corresponding period in the Levant and Caucasus. The Mesolithic has different time spans in different parts of Eurasia.
Cuevas de la ArañaThe Coves de l'Aranya (in original Catalan language, known in English as the Spider Caves and in SpanishCuevas de la Araña) are a group of caves in the municipality of Bicorp in València, eastern Spain. The caves are in the valley of the river Escalona and were used by prehistoric people who left rock art.
Wire ropeWire rope is composed of as few as two solid metal wires twisted into a helix that forms a composite rope, in a pattern known as laid rope. Larger diameter wire rope consists of multiple strands of such laid rope in a pattern known as cable laid. Manufactured using an industrial machine known as a strander, the wires are fed through a series of barrels and spun into their final composite orientation.
RopeA coil of right-handed laid four-strand ropeA rope is a group of yarns, plies, fibres, or strands that are twisted or braided together into a larger and stronger form. Ropes have high tensile strength and can be used for dragging and lifting. Rope is thicker and stronger than similarly constructed cord, string, and twine.
EscaladeEscalade is the act of defensive walls or ramparts with the aid of ladders. Escalade was a prominent feature of sieges in ancient and medieval warfare. Although no longer common in modern warfare, escalade technologies are still developed and used in certain tactical applications. EtymologyIt is a borrowed French word, the noun-equivalent form of the verb escalader, meaning "to climb" or "to scale".
StairsStairs are a structure designed to bridge a large vertical distance between lower and higher levels by dividing it into smaller vertical distances. This is achieved as a diagonal series of horizontal platforms called steps which enable passage to the other level by stepping from one to another step in turn. Steps are very typically rectangular, but may instead be straight, curved, or may consist of two or more straight pieces connected at angles.
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