By default, all bars are lap spliced with the adjacent bars on either side.

Flexural Bar Set Cutoff Locations - The bar set cutoff locations for the top and bottom reinforcement is only followed when the required moment capacity at the cutoff location is zero or when adequate capacity is produced by continuous bars. When the required moment capacity becomes zero beyond the user-defined location the cutoffs will be extended, when practical, otherwise it will be left as a lap spliced with the adjacent bars. When the bars need to be cut beyond the user defined location the bar will start a distance of /2 beyond the location of zero moment. This is to insure that the bars have adequate capacity along the full length of the beam.

Example

Consider the 22.5ft clear beam span in Figure below and 18 in supports at the end of a beam line. Using a 0.25 x L cutoff for the end bar would require a bar length of 0.25x22.5+18/(2x12) = 6.38ft. At a distance of 6.38ft there is still negative moment that needs to be designed for. So the bars are extended /2 beyond the point where no more negative flexural capacity is required, which in this case is located at 7.58ft from the support center. Taking the development length for #8 bars to be 4 ft the final bar length is 7.58 + 4/2 = 9.58ft.

The remainder of the parameters that are entered in the dialog box are followed as entered or as overwritten using the Assign Reinforcement Layout dialog box.