Total settlement, 90% mdd
Total settlement, 90% mdd
(OP)
I had a question. I've seen specs that call out 90% compaction below a certain depth, say 2', for a trench or roadway(95% on top). I am under the impression that this assumes the sphere of influence does not go below this depth, or somesuch. Isn't it the case, wouldn't that 90% compacted material settle over time(especially if your trench is deep), making your 10' wide excavation rip up the pavement someday in the future? What is the purpose for compacting less than 95%? What's the deal?
Thanks.





RE: Total settlement, 90% mdd
RE: Total settlement, 90% mdd
RE: Total settlement, 90% mdd
Richard A. Cornelius, P.E.
WWW.amlinereast.com
RE: Total settlement, 90% mdd
Wow- 100%. I've tested that before but only for runway strips.
You've jogged my memory on this actually. I tested fill that was placed, and then had a chance to test a year later after seasonal rains. The compaction had actually increased to in some areas over 100%. I understand the difference between laboratory compaction and consolidation of sands, ect. in the field, but that was the first time I'd ever seen it. Makes me wonder about actual settlement in the field, ergo, my question. Anyway, still bewildered. 90%? You're just asking for it, in my opinion.