miecz
Structural
- Sep 30, 2004
- 1,400
In light of the recent discussion of minimum reinforciment of footings according to ACI 318 (thread507-185223) I'm wondering how other tank designers are interpreting the minimum reinforciment provisions for Envorinmental Structures in ACI 350.
I'm using the method found in the examples in the PCA publication "Rectangular Concrete Tanks", 5th Edition.
According to this publication, which is referenced in ACI 350, tensile reinforcement in tank walls needs to meet Article 10.5.1, as modified by 10.5.3, and. according to Article 10.5.4, meet Article 7.12.
The difference between ACI 318 and ACI 350 is that the minimum reinforcing ratio in 7.12 for a wall with 40 foot between joints is .0050, vs .0018 for such a wall in ACI 318.
Seeing that the wording of Article 10.5 is identical in both publications, it would seem that the minimum tensile reinforcing ratio for walls with joints at 40 feet is .0050.
However, the PCA Publication (Example 1,under "e") checks Article 7.12 with half the T/S reinforcing at each face.
So, again, I'm wondering how other tank designers are handling this for tank walls.
I'm using the method found in the examples in the PCA publication "Rectangular Concrete Tanks", 5th Edition.
According to this publication, which is referenced in ACI 350, tensile reinforcement in tank walls needs to meet Article 10.5.1, as modified by 10.5.3, and. according to Article 10.5.4, meet Article 7.12.
The difference between ACI 318 and ACI 350 is that the minimum reinforcing ratio in 7.12 for a wall with 40 foot between joints is .0050, vs .0018 for such a wall in ACI 318.
Seeing that the wording of Article 10.5 is identical in both publications, it would seem that the minimum tensile reinforcing ratio for walls with joints at 40 feet is .0050.
However, the PCA Publication (Example 1,under "e") checks Article 7.12 with half the T/S reinforcing at each face.
So, again, I'm wondering how other tank designers are handling this for tank walls.