Civil Engineering Reference
In-Depth Information
Figure 13.28
through a joint, one end of the bars on one side of the joint is either greased or sheathed so
that the desired expansion can take place.
It is difficult to estimate the amount of shrinkage or expansion of a particular wall be-
cause the wall must slide on the soil beneath, and the resulting frictional resistance may
be sufficient so that movement will be greatly reduced or even prevented. A rough value
for the width of an expansion joint can be determined from the following expression, in
Box culvert. (Courtesy of Economy Forms Corporation.)
