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Re: ACI 117

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Please note section 1704.1 of the 2003 IBC requires that the Owner or his
agent must retain the special inspectors.  Given that the taking of slump
and air content tests are classified as special inspections (Table 1704.4)
it does not make sense for the Contractor to take the cylinder samples.

When the contractor hires the testing laboratory they can apply economic
pressure on the laboratory in ways that can bias the results.  One common
example is complaining about inspectors that are too vigilant so that only
the more reasonable inspectors are assigned to their project.

Mark Gilligan

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