Case study · Hotel / Hospitality

Failing benchmark to first-pass AHJ approval

AC Hotel Ann Arbor, a 7-floor hotel in Ann Arbor, Michigan, failed its public-safety benchmark grid test, legally triggering an ERCES. WZC took it to full code coverage, approved on the first inspection.

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Client:
AC Hotel Ann Arbor
Location:
Ann Arbor, Michigan
Industry:
Hotel / Hospitality
Service:
Public Safety DAS / ERCES

From failed benchmark to margin above code

Sq ft covered
81,706
Sq ft covered
General coverage
95%
General coverage
Critical-area coverage
99%
Critical-area coverage
Punchlist items
0
Punchlist items

Acceptance grid-test results at AC Hotel Ann Arbor, 95% general and 99% critical-area coverage across 81,706 sq ft, approved on the first inspection.

The challenge

AC Hotel Ann Arbor failed its public-safety benchmark grid test, and the failure legally triggered an ERCES requirement.

The solution

WZC ran the full process from there: predictive iBwave design and direct fire-marshal coordination, so the system on paper was the system the AHJ expected to see.

Engineered to pass the first inspection

  1. 01

    Benchmark: failed grid test

  2. 02

    Acceptance: first-pass approval

When AC Hotel Ann Arbor failed its public-safety benchmark grid test, the failure legally triggered an ERCES requirement. WZC ran the full process from there: predictive iBwave design and direct fire-marshal coordination, so the system on paper was the system the AHJ expected to see.

The acceptance grid test proved 95% general and 99% critical-area coverage with margin, earning first-pass AHJ approval with zero punchlist items.

  • Predictive iBwave design with fire-marshal coordination
  • Acceptance grid test passed with margin, zero punchlist

More results

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