Joints, Structural Concrete


Joints are necessary in concrete structures for a variety of reasons. Not all concrete in a given structure can be placed continuously, so there are construction joints that allow for work to be resumed after a period of time. Because concrete undergoes volume changes—principally related to shrinkage and temperature changes—it can be desirable to provide joints and, thus, relieve tensile or compressive stresses that would be induced in the structure. A beam-column joint is defined as that portion of the column within the depth of the deepest beam that frames into the column.

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