One of the case studies in the NCARB practice exam is as follows:
The contractor submits an approved laboratory test for soil classification of earthwork fill at the new building addition. The architect asks the contractor to also submit compaction test results when performing the work. However, the contractor argues that the compaction tests, as specified by the architect, are to be provided to the owner.
312200 - Grading
Part 1.05, Section B lists compaction results as a submittal and delineates responsibilities of the contractor and owner. Part 3.08 lists performance requirements for the compaction of soils.
312323.13 - Backfill
Part 3.05, Section B lists compaction testing to be performed in accordance with ASTM D1557.
Based on the specifications document provided, I understand that the sections for grading and backfill both refer to ASTM D1557. Those sections include the following:
It clearly states to conduct compaction testing in accordance with ASTM D1557, Standard Test Methods for Laboratory Compaction Characteristics of Soil using Modified Effort. That makes perfect sense, however the section on Aggregates for Earthwork also references tests in accordance with that same ASTM D1557, though it doesn't specify compaction testing:
My assumption was that "testing in accordance with ASTM D1557, Standard Test Methods for Laboratory Compaction Characteristics of Soil using Modified Effort" would mean that the contractor would submit compaction test results for Aggregates for Earthwork as well.
Under the aggregates for earthwork section, the tests are mentioned under "SOURCE QUALITY CONTROL" as opposed to "FIELD QUALITY CONTROL" like in the two correct sections. Does this difference mean that the contractor doesn't need to submit test results for the aggregates for earthwork? Alternatively, was I simply incorrect in assuming that using ASTM D1557 means compaction testing?
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