Allegheny County, Parkway East
ESD Flooring in Monroeville
Static control floors for Monroeville operations, built to the band your process requires rather than to a colour chart.
What it is
Why Monroeville needs it
Monroeville runs on precision engineering, and precision work has a habit of arriving with paperwork. When a floor is inside a documented control program, it stops being a finish and becomes a piece of equipment that has to produce a reading on demand.
The part that catches people is that hitting the resistance number is no longer enough on its own. Since the 2014 revision of ANSI/ESD S20.20 there is a walking test as well, and a floor can measure perfectly and still put a person over 100 volts.
Allegheny County
Charge, bleeding off
Static dissipative floors let charge leave slowly instead of dumping. That controlled bleed is the whole difference from an ordinary epoxy, which just holds it.
Where we work
The Monroeville corridor
We cover the Parkway East and Business Route 22 corridor, the Monroeville and Penn Center business parks, and the engineering facilities off Mosside Boulevard.
naval propulsion and nuclear engineering
precision assembly
instrumentation and test
Straight out the Parkway East, so we can be on your slab and back before the shift changes.
The standard
Built to ANSI/ESD S20.20
Measured to ANSI/ESD STM7.1. Which band you need is set by what you build, never by preference.
ohms, logarithmic
S20.20 system ceiling, 109 ohmsfloor plus footwear plus person, to STM97.1
- Conductiveless than 1.0 x 106 ohmsCharge has to leave the floor fast.
- Static dissipative1.0 x 106 up to less than 1.0 x 109 ohmsCharge bleeds off in a controlled way.
- Ordinary epoxyfar above 1.0 x 109 ohmsHolds charge instead of moving it to ground.
The whole system has to measure under less than 1.0 x 10⁹ ohms to ANSI/ESD STM97.1, and a person walking on it has to stay under less than 100 volts peak to ANSI/ESD STM97.2.
Before anybody quotes
What we look at first on a floor like yours
Which band the process actually requires
Conductive is 2.5 x 10 to the fourth up to 1.0 x 10 to the sixth ohms. Static dissipative is above that and below 1.0 x 10 to the ninth. Which one you need is set by what you build and by how close your people work to live equipment, never by a preference.
The walking test, not just the floor test
ANSI/ESD STM97.1 measures floor, footwear and person as one system, and STM97.2 measures peak body voltage while somebody walks on it. Two different tests. Passing one does not mean passing the other, and the footwear is part of the answer.
Where building ground actually is
A copper grounding strip runs into the conductive layer and ties to building ground at connection points laid out for the size of the floor. Without it the floor is a coating with carbon in it and it will not test.
By name
Every standard on this page
Nothing here is our own designation. Look any of them up before you talk to anybody.
- 01The floorSTM7.1 measures this alone
- 02The footwearpart of the system
- 03The personpart of the system
- 04Building groundcopper strip, bonded
STM7.1 reaches the floor, and stops there.
STM97.1 and 97.2 reach all four links.
STM97.1 under 1 x 109 ohms, and STM97.2 under 100 volts walking
That is the whole chain, measured together. The floor on its own never settles it.
ANSI/ESD S20.20
The ESD control program standard an audited facility is held to.
ANSI/ESD STM7.1
How the resistance of the floor itself gets measured.
ANSI/ESD STM97.1
How the floor, the footwear and the person get measured as one system.
ANSI/ESD STM97.2
The walking test. Peak body voltage a person generates on that system.
ASTM D257
The general DC resistance method the flooring methods descend from.
NFPA 77
Recommended practice on static electricity where ignition is the risk, not part damage.
Static control across the metro
ESD flooring nearby
Same standard, different floor. Pick the one closest to your operation.
Scheduling
Can you pour it in Monroeville this week?
Live air and dew point over Parkway East and Business Route 22 corridor, the Monroeville and Penn Center business parks, and the engineering facilities off Mosside Boulevard, scored against ASTM D3276. Five degrees of margin over the dew point, held through prep, application and cure, or the floor blushes while it is going off.
Reading conditions over Monroeville...
What this is and is not
This reads the air. The standard governs the slab, and concrete lags air by hours, sometimes by most of a day after a cold night. A slab can still be under the dew point while the air above it looks fine. So treat this as your scheduling answer, not your go-ahead: the go-ahead comes off a surface thermometer and a hygrometer at the door on the morning of. Cure windows also move by system, so the product data sheet on your job is what governs.
FAQ
Static control questions
The three that come up first on a Monroeville floor. The full twenty five, on resistance, grounding and test method, are on the Pittsburgh page.
Not on its own. Since the 2014 revision of ANSI/ESD S20.20 there is also a walking test, ANSI/ESD STM97.2, and the whole system has to stay under 100 volts peak. A floor can measure inside band on STM7.1 and still fail that test.
It comes down to what you build and how close people work to live equipment, never a preference. Conductive is 2.5 x 10 to the fourth up to 1.0 x 10 to the sixth ohms; static dissipative sits above that and under 1.0 x 10 to the ninth. Precision assembly and instrumentation work here usually points to a specific one, and that is worth settling before anyone quotes the job.
A copper grounding strip runs into the conductive layer and connects to building ground at connection points laid out for the size of the floor. Without it the floor is a coating with carbon in it, and it will not test, whatever the resistance reading says.
Read all twenty five static control answers on the Pittsburgh page, including resistance bands, grounding and test method.
Start here
Tell us about the slab
Square footage, the band you have to hit, what is on the slab now, and your traffic. If you do not know the band, that is a normal place to start.
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