strut and tie for pile cap
 

strut and tie for pile cap
hi all
i have a column supported on pile cap for 2 piles
when i checked aci02 15.15.3 i found that i can use strut and tie model for this pilecap, when i followed the procdures for calculating the nodal dimensions i found that i am having dimensions for hz chode for column node more than column dimension which can not be!
so what can be the main problem?, i think that i am having high forces on this pile cap.
is there any other st model i can assume?
note: i assumed normal v shape path for st and the angle was angle to 41 between the chords

sounds like you need to make your pile cap deeper or increase your concrete strength.
it looks like it is as simple as that.
csd