Reinforcement detail of flat slab openning

[eeedesign]

Hello Designers!
Anybody can share a good reinforcement detailing for big openning in flat slab. The openning dimension is 3.0m x 2.8m coinside at the middle strip of the slab. Thanks and really appreciate your help.

 

[hokie66]

Middle-middle, no problem. Just provide lapping bottom bars on both sides, in both directions, equivalent to the intercepted bars.

 

[eeedesign]

Thanks!

 

[gobsmacked]

Is it just an opening, or is there a stair load or similar coming in on one of the edges?

 

[kieran1]

Always like to add additional diagonal bars at the corners on the opening as well

Kieran

 

[rowingengineer]

http://www.concrete.org/members/ci2807mota.pdf‎

http://www.nceng.com.au/

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