Benchmark grid test
Get a grid test quote
A benchmark grid test is the measured starting point for every ERCES project: it tells you and your AHJ exactly where the building stands, and it is what legally triggers, or clears, the requirement. Tell us about the building and a WZC engineer will scope the test and return a fixed-fee quote within one business day. The fee is credited toward the project.
- Signal loss in modern construction
- 80%
- Signal loss in modern construction
- & NFPA 1225 code-mandated
- IFC 510
- & NFPA 1225 code-mandated
- Coverage fixed in 4 days
- 51→100%
- Coverage fixed in 4 days
- First-pass AHJ approval, every system to date
- 100%
- First-pass AHJ approval, every system to date
What you get
What a benchmark grid test gives you
The fee is fixed before we start and credited toward the project if you build with us.
- A floor-by-floor coverage map of the building as it stands today
- Pass or fail against the code thresholds: 95% of grids in general areas, 99% in critical areas
- An AHJ-ready report, in the format your jurisdiction expects to receive
- A design recommendation if the building fails, with the system sized and scoped
Why it matters
Why buildings need ERCES
A benchmark grid test tells you where your building stands before any of that becomes a problem.
The physics
Modern materials kill radio signal
- Signal loss in modern construction
- 80%
- Signal loss in modern construction
- & NFPA 1225 code-mandated
- IFC 510
- & NFPA 1225 code-mandated
- Coverage fixed in 4 days
- 51→100%
- Coverage fixed in 4 days
- First-pass AHJ approval, every system to date
- 100%
- First-pass AHJ approval, every system to date
- Emergency response
- 24/7
- Emergency response
Typical attenuation of 700/800 MHz public-safety radio signal through common construction assemblies, the reason ERCES is code-mandated for modern buildings.
| Construction material | Typical signal loss |
|---|---|
| Low-E glass | about 30 dB per pane |
| Concrete floor | about 15 dB per level |
| Metal cladding | about 40 dB |
| Below-grade parking | about 50 dB |
Low-E glass
- Typical signal loss:
- about 30 dB per pane
Concrete floor
- Typical signal loss:
- about 15 dB per level
Metal cladding
- Typical signal loss:
- about 40 dB
Below-grade parking
- Typical signal loss:
- about 50 dB
Benchmark grid test
Tell us about your building
A WZC engineer reads every submission and replies within one business day.
Track record
Why building owners choose WZC
Prefer to talk? Call 248-946-4000 for emergency or citation situations.
- ERCES projects completed
- 150+
- ERCES projects completed
- First-pass AHJ approval, every system to date
- 100%
- First-pass AHJ approval, every system to date
- Design to grid test
- 3–6 wk
- Design to grid test
- Emergency support
- 24/7
- Emergency support
Prefer to talk it through?
Call for emergency or citation situations, or send your building details and a WZC engineer will get back to you within one business day.
- Engineered for compliance
- Built for reliability. Designed for you.
- Response within one business day