ACI 318-11 Chapter 5 "Class"
ACI 318-11 Chapter 5 "Class"
(OP)
What is the intention of the term "class" (of concrete) in chapter 5 (Quality assurance, control, etc.)? It doesn't seem to be properly defined. To me, it seems that it should mean something more than concrete class with respect to exposure in the durability chapter; rather a more general term to describe different groups of mixes with: different aggregate sizes, strength variations greater than 1000 psi, various durability requirements, etc. etc.
My project has a concrete supplier who is fighting submitting data to back up his mix designs and it is causing me a problem not understanding what "class" means in the context of submitting mix design data. We have a number of mixes, but it is tough nitpicking the submittal when I am not confident at this level of detail.
My project has a concrete supplier who is fighting submitting data to back up his mix designs and it is causing me a problem not understanding what "class" means in the context of submitting mix design data. We have a number of mixes, but it is tough nitpicking the submittal when I am not confident at this level of detail.
"It is imperative Cunth doesn't get his hands on those codes."





RE: ACI 318-11 Chapter 5 "Class"
RE: ACI 318-11 Chapter 5 "Class"
Specifically, I am arguing that out of these mixes:
1. 4000 psi 1/2 gravel Hambro slab
2. 3000 psi 1/2 gravel stair pan conc.
3. 4000 psi interior slab with 3/4 gravel
4. 3000 psi footing conc with 3/4 gravel
5. 4500 psi exterior flatwork
...I need one set of tests for (1 & 2), (3 & 4), and 5 separately. To me, those are the classes of mixes. The supplier only wants to give data for numbers 3/4, because "he is just a small plant, never did this before, yada yada, yada".
"It is imperative Cunth doesn't get his hands on those codes."
RE: ACI 318-11 Chapter 5 "Class"
RE: ACI 318-11 Chapter 5 "Class"
How are you defining class? 5.3.1.1b allows records within 1000 psi
That is how I justify combining the mixes into classes which require separate data. Still too much to them...
ha...
"It is imperative Cunth doesn't get his hands on those codes."