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| a connection between two members that has zero resistance to moment in a particular plane. |
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| In two dimensions, a pin connection restrains two translation degrees of freedom but does not restrain rotation. Since the rotation degree of freedom is unrestrained at a pin connection, it transfers no moment. the same as a hinge connection. |
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| a connection that transfers shear forces. |
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a tab welded to a column and bolted to the web of the beam (in the case of steel) so that the beam only carries shear.
http://www.steel-connections.com/lmc_wsp.htm |
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| the degree to which a structural element is displaced under a load. |
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| a projecting structure, such as a beam, that is supported at one end and carries a load at the other end or along its length. typically has (in addition to its shear load) an enormous moment load and is terribly inefficient on its own. |
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| positive and negative moments are equivalent. |
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| A connection designed to transfer moment as well as axial and shear forces between connecting members. |
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| a connection that restrains motion of the member in all 3 dimensions. a fixed connection transfers all types of forces, moment, sheer, bending, torsion, etc. a synonym for rigid connection. |
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a synonym for fixed connection.
A connection designed to transfer moment as well as axial and shear forces between connecting members. |
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| Surface where concrete placement was interrupted then later resumed. |
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| A bracket of stone, wood, brick, or other building material, projecting from the face of a wall and generally used to support a cornice or arch. the weight above the embedded end balances the cantilevered force. forces distribute at a 45 degree angle. |
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| a structure that is supported by means of suspension. This is much more efficient (at least in the structure itself) because materials are typically much more efficient in tension than compression. |
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| a suspended structure hung by cables. Steel cables are typically 4 to 10 times as strong as steel beams because the method used to produce them (cold drawing) makes them stronger. Also, steel is more effectively used in tension than compression. |
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Definition
a forked device used to pin the end of a rod on a gusset plate or other structural part. The clevis may be adjustable or fixed. An adjustable member with a fixed clevis at one end may be fitted with a thread and nut at its opposite end, while one having fixed clevises at each end may be fitted with either a sleeve nut or a turnbuckle in its midlength portion. Lateral bracing and tie-rod diagonals on steel trusses often use clevises
http://interns.beloblog.com/archives/clevis.jpg |
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| HSS (Hollow Structural Section) |
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Definition
A steel member that is hollow in an attempt to maximize efficiency and use of material. by spacing as much material as far from the centroid as possible, the cross section becomes most efficient in resisting buckling. (typically columns)
because they have the same cross section in any direction, they are very efficient to use when a column is to be loaded in multiple directions. |
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