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Definition
| a truss whose structure comprises two opposing diagonal members joined at their apex and by a horizontal member at their middles |
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Definition
| the foundation structure at each end of the bridge that supports the loads |
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Definition
| the section of a cantilever bridge that is secured to the anchorage |
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| the point at which the bridge's supporting elements, such as suspension cables, are anchored to the ground |
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Definition
| the uppermost part of a bridge or part of its structure |
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Definition
| a section of the deck that provides the link between the road and the main bridge span |
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Definition
| a major cable on a cable-stayed bridge that is connected to the ground behind the mast or tower |
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Definition
| a railing along the side of the bridge, usually comprising a series of upright supports that are topped by a horizontal rail |
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Definition
| a counterbalancing mechanism exploited in movable bridges in which the deck rotates about a pivot like a seesaw |
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Definition
| the sum of forces applied to a beam that cause it to bend; creates opposing tensile and compressive stresses over the cross-section |
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Definition
| the casing surrounding an aperture through which a bolt is designed to sit |
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Term
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Definition
| also known as a tied arch, in which the lateral thrust forces in the line of the arch are taken by a lower chord, often doubling as the bridge deck; unlike conventional arches, which apply vertical and horizontal thrust to their supports, apply only vertical thrust |
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Definition
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| a supporting member that provides additional strength or rigidity in a structure |
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| a partition in a structure that can also strengthen it |
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Definition
| one of a number of independent high-tensile wires extending from a mast or tower to support the bridge deck; cables arranged by radiating from top mast in fanlike pattern or in parallel |
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Definition
| a pressurized watertight and airtight chamber used in the construction of bridge foundations situated under water |
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Definition
| a structure projecting in one direction from an upright support |
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Definition
| the portion of a cantilever bridge that forms part of the main span |
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Definition
| the natural curve created by a suspended cable supported at both ends |
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Definition
| the top and bottom longitudinal members in a truss |
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Definition
| a primitive method of bridge construction using only flat stone slabs supported on stone piers |
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Definition
| a watertight enclosure placed onto the riverbed and drained to permit the construction or repair of a structure |
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Definition
| a material's ability to resist compressive forces |
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Definition
| a structural element that extends beyond a wall's surface to support members above |
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Definition
| a patented type of weathering steel that does not require painting and forms a stable rust-like appearance |
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Definition
| the gradual movement of a material or structure caused by its own mass or applied long-term load or in response to external factors |
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Definition
| a transverse beam that connects two principal sides of a structure |
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Definition
| a form of transverse bracing in a structure to increase strength and rigidity |
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Definition
| the uppermost part of a structure, such as an arch |
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Definition
| a weight that acts as a counterbalance |
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Definition
| the main surface of a bridge over which traffic passes |
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Definition
| a type of joint compromising an interlocking mortise and tendon |
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Definition
| a force that induces acceleration or vibration in a structure |
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Definition
| the space between two parts of a structure to allow for expansion and contraction |
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Definition
| the exterior curve of an arch |
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Definition
| the means by which a component (such as a steel wire) is created with a consistent and continuous section |
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Definition
| a structural member comprising a solid bar with holes at each end, forming part of a chain |
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Definition
| a temporary structure, such as scaffolding, erected in the course of constructing a permanent structure |
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Definition
| a form of reinforced concrete wherein iron or steel bars are cast in concrete to increase the material's tensile strength |
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Definition
| a sheet of metal welded to a structure to increase strength and rigidity |
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Definition
| a section of a structural member that is widened for additional strength |
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Definition
| a mold, usually made of wooden boards, into which concrete is poured |
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Definition
| a pile used in foundations whose effectiveness depends on friction with the surrounding soil instead of end bearing |
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Definition
| a large beam; typically associated with iron or steel, but could be fabricated from any material, such as concrete |
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Definition
| the moveable compartment or cabin suspended from cables on a transporter bridge |
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Definition
| a structural form characterized by two vertical members joined together at mid-height on a horizontal beam, forming an H shape |
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Definition
| a box girder with an underside that arcs from the support to the midspan; deepening of the girder over the supports reflects the form of construction and its structural performance |
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Term
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Definition
| a cylindrical spiral or cork screw structure |
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Definition
| a bending moment that generates tensile forces in the top of the beam, causing the bottom surface to be concave |
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Definition
| a mechanism that is operated by the movement of water under pressure |
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Definition
| a truss with two diagonal members between each pair of vertical supports; the diagonal elements begin at the midpoint of one vertical and finish at the top and bottom ends of the adjacent vertical |
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Definition
| the central stone at the apex of an arch |
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Definition
| providing structural stability through the bridge's depth instead of along its length |
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Term
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Definition
| the portion of a bascule bridge deck that is raised and lowered |
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Definition
| a type of truss comprising two curved chords; overall outline resembles a lens |
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Definition
| the weight imposed on a bridge; |
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Term
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Definition
| constant and unvarying forces the structure has to withstand, such as the bridge's inherent weight |
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Term
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Definition
| unpredictable and varying forces caused by environmental factors or the changing weight of traffic over the bridge |
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Definition
| of or pertaining to the length of the bridge |
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Definition
| a principal structural member projecting upward, often vertically, from the bridge |
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Term
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Definition
| a part or element of a structure |
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Definition
| a simple interlocking joint originating in carpentry where two pieces of wood are joined securely by inserting part of the male component (tenon) into a corresponding hole in the female component (mortise) |
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Definition
| a low wall that forms a barrier around the outer edge of the bridge |
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Term
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Definition
| vertical elements of a bridge that support horizontal elements, such as a beam or a truss |
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Term
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Definition
| a long vertical section of wood or concrete (usually cylindrical in section) embedded in the ground that forms part of a structure's foundation |
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Definition
| a bolt or similar component that joins two members together by being inserted through apertures in both and held securely |
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Definition
| a form of reinforced concrete in which spanning capabilities are enhanced by inducing compression forces in the parts of the structure likely to develop tensile forces |
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Term
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Definition
| a type of truss in which the diagonal members on each side of the truss are oriented in the same direction and meet at the middle; diagonals work in tension in a simply supported configuration |
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Definition
| a concrete component that is manufactured offsite |
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Definition
| a tall structural member that acts as a principal supporting element in a bridge |
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Term
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Definition
| spreading out from a common center, such as the spokes of a wheel |
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Term
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Definition
| concrete that contains reinforcement bars or fibers to enhance its tensile capacity |
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Term
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Definition
| a small member used to stiffen or strengthen part of a structure |
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Term
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Definition
| the mechanism at the top of suspension bridge towers over which suspension cables are laid; purpose is to allow for movement in the cables in response to climatic conditions and functional requirements |
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Term
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Definition
| a bending moment that generates tensile force in the bottom of a beam, causing the top surface to be concave |
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Term
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Definition
| a shallow type of arch that is formed by an arc of less than a semi-circle |
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Term
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Definition
| of or pertaining to earthquakes or the movement of the earth |
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Term
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Definition
| a force acting perpendicularly to the longitudinal axis of a beam |
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Term
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Definition
| an arch that resembles the shape of sickle, often being thicker at its midsections than at its ends |
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Term
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Definition
| a construction technique in which concrete is poured into a continuously moving mold or form; commonly used in construction of tall structures with a consistent section such as the core of a skyscraper or the pylons of cable-stayed or suspension bridges |
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Term
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Definition
| the distance between two supports or piers of a bridge |
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Term
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Definition
| the area, often triangular in shape, between the horizontal deck, the curve of the arch, and the vertical abutment |
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Term
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Definition
| the cables, often referred to as hangers, that attach the road deck to the main suspension cables on a suspension bridge |
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Term
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Definition
| of or pertaining to a pulling force |
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Definition
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Definition
| strengthening that occurs across a structure instead of along it |
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Term
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Definition
| conventionally derives its strength from the triangle; each member is subject to compression or tension (or both, but not at the same time) |
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Definition
| a type of roofed structure formed by a series of arches or vaults |
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Term
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Definition
| a type of bridge over land,formed by a series of small (usually arched) spans |
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Term
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Definition
| a type of truss formed of rectangular (usually) instead of triangular sections and which thereby relies on the strength of its component members in bending as well as pure tension and compression |
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Term
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Definition
| one of the wedge shape pieces that makes up an arch or vault |
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Term
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Definition
| a type of truss made up of only horizontal and diagonal members; conventionally have no vertical members, so alternating diagonal members form a series of equilateral triangles between the horizontal members |
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Term
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Definition
| vertical members inserted between diagonal members of the truss |
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