Footing Jacketing
Footing Jacketing
(OP)
Good Evening / Morning .
Due to a additionnal load on an existing isolated footing , i'm trying to redesign it by using the jacketing it by two orthogonal beams.
My question is about new beams reinforcement ( please see attachment ) :
1.Is longitudinal beams reinforcement , by direction , should balance all the new effort from the column , regardless existing reinforcement in the existing footing ?
2. What are disposition for calculating lniks between old and new concrete ?
Thanks a LOT.
Due to a additionnal load on an existing isolated footing , i'm trying to redesign it by using the jacketing it by two orthogonal beams.
My question is about new beams reinforcement ( please see attachment ) :
1.Is longitudinal beams reinforcement , by direction , should balance all the new effort from the column , regardless existing reinforcement in the existing footing ?
2. What are disposition for calculating lniks between old and new concrete ?
Thanks a LOT.






RE: Footing Jacketing
At the pier above the footing, I recommend adding a shear head made out of channel steel, and reinforcing similar to a post at a two-way slab (inverted). Design the footings for the factored soil capacity, not the applied load, as a courtesy to future engineers.
RE: Footing Jacketing
I tied it all together with re-bar and Hiltis. (The required number of which depended on shear flow, etc.)
Doing this made the footing rigid enough to ensure any additional load was evenly distributed (I hope).