Plain concrete footing design 3

[Anaximandar]

Does anyone have an example of plain concrete wall footing design? I was going through ACI 318-05 and it doesn't seem that min. reinf. provision applies to footings. If my footing is 12" thick and 24" wide with 12" pier on top - shouldn't arch effect create compression and nearly eliminate tension at bottom allowing design for bending without reinforcement? I know I still have to put longitudinal reinf. bar at least at top of pier and bottom of footing. What about temperature and shrinkage reinf?
Thanks

 

[vincentpa]

PCA NOTES on ACI 318-02 or PCA NOTES on ACI 318-05 have examples. If you don't have this book for concrete design examples, you should. It is the most hlepful concrete design book consisting of code explanations and examples. I'd copy the example and send it to you but I am afraid of copyright violations.