Retaining Wall Footing Question
Retaining Wall Footing Question
(OP)
When designing the reinforcement for the heel of a cantilevered wall, why is it based on the moment produced by the soil over heel, self weight and surcharge? Why is not just exactly the same moment as in the bottom of the stem? From a practical standpoint, how can it be any larger than that?
Thanks in advance.
Thanks in advance.






RE: Retaining Wall Footing Question
The transverse rebars at the top face of the footing carry the moment caused by all the weight on the heel of the footing as the heel theoretically lifts up.
RE: Retaining Wall Footing Question
The rebar dowels from the wall stem to the footing carry the wall moment into the toe of the footing,...
RE: Retaining Wall Footing Question
RE: Retaining Wall Footing Question
http://www.soilstructure.com/
RE: Retaining Wall Footing Question
It is based on the self weight of the footing and overburden and assuming you are at the verge of overturning.
In reality, the moment in the heel can never be greater than the stem moment. Look at an FBD right were the stem joins the footing.
The moment in the heel is only there due to the torque of the stem.
RE: Retaining Wall Footing Question
I never chose a retaining wall geometry that puts me on the verge of overturning, my stability ratio is 1.5. Therefor i have contact earth pressure acting on the heel and the components of the heel moment are soil over heel, self weight and surcharge with the contact pressure working in the opposite direction.
RE: Retaining Wall Footing Question
RE: Retaining Wall Footing Question