In the middle of Great Bim, both the 3 main rods are lapping on the tension zone.

I want to know the response.
The rules of giving a wrapping inside the 1/3 portion of the bottom rod lapping support and the design of the top rod lapsing media ads. thanks to everyone.

The middle of the beam is called the upper part of the tension and the lower part is called compaction, so the top rod lap is given to the mid-span, because there is no negative momentum,
For the same reason again, the bottom rod is close to the support of the lap.