Rebar Arrangement Details-Long Span Continuous Beam

[foxview11]

Hi to experts,

I have a question regarding Rebar Details of a long span continuous beam which our engineering deapartment submit a shop drawing which does not conform to ACI typical beam rebar detail because only 12.0m in length of rebars are available in the market. However, in ACI, it is not clear to show details for long span beams the alternate locations of continuous rebar lapping for top and bottom bars. My question is, what is the effect of structural integrity if rebar lapping is not placed in a proper locations as per ACI code? Does anybody can give suggestions regarding the matter? Please any expert on this..thanks

Attached is the detailed drawing of rebar details.

 

[calvinandhobbes10]

ACI 318-11, 12.14.1 gives latitude to the design professional, and the comments on this section indicate that laps should be done away from highest tensile stress.

It looks like this detailer thought it out somewhat. The splices are located as I might suggest (top bars at midpsan, bottom bars at third span since they can't reach the support).
One suggestion would be to make the interior-column E top bars match the 12.0m D bars, and shorten the midspan top "filler" bars.

Also verify lap lengths.

 

[foxview11]

Thank you calvinandhobbes10 for your suggestion on top bars, but with regards to bottom bars, is it safe to say that lapping can be placed twice the depth of beam from interior and end supports? Length of lapping depends on size of rebars which is class A tension lap.