Civil Engineering Reference
In-Depth Information
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Fig. 6.1
Deviation of specification and implementation of components
certain requirements may become an important issue, referring to the previously
mentioned step (see Fig.
6.1
).
The implementation of component specifications may include (unfavourable)
misinterpretations and “real” mistakes. If a mechanism was not understood in the
same way as originally intended, it may be difficult to call it a mistake. A specifica-
tion may lead to a logically correct conclusion, which, simply said, had not been
intended by the designer. Nevertheless, the major goal must be kept in mind that
products of different suppliers shall be sufficiently compliant and in accordance
with the standard.
6.1.1
Important Terms
• Conformance
According to ISO 9000 (see [ISO9000], §§ 3.6.1, 3.8), conformance corresponds to
“fulfilment of a requirement”, while a mistake is “non-fulfilment of a requirement”.
Furthermore, this standard emphasizes testing as an appropriate means for objec-
tive proof of conformance. An implementation is proven to be conformant if it is
compliant to all specified requirements.
• Conformance Tests
Conformance tests check the behaviour of an implementation against the corre-
spondingly specified standard. These tests are functional tests, belonging to the
group of dynamic test methods (see Fig.
6.2
).
