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San Antonio-New BraunfelsBexar County

San Antonio static control floors, built to ANSI/ESD S20.20

Airframe and avionics work in San Antonio inherits its static control obligations from a customer rather than from a building code, which changes what has to be retained. Measured here: aerospace MRO, automotive electronics, data centers.

2.5 x 104 to 1.0 x 106ohmsANSI/ESD STM7.1 / ASTM D257 (as cited on manufacturer TDS)
under 1.0 x 109ohmsANSI/ESD STM97.1
400psi (concrete failure)ASTM D4541

San Antonio, and what gets built here

Aerospace capacity in Bexar County is what puts static control on the specification here. Each operation names where it was verified.

01aerospace MRO

StandardAero's San Antonio engine MRO

StandardAero's San Antonio engine MRO (maintenance, repair and overhaul) operation works out of an 810,000 sq ft facility, according to Aviation Week.

Source, verified 2026-09-05

02automotive electronics

Toyota Motor Manufacturing Texas announced a $3.6 billion

Toyota Motor Manufacturing Texas announced a $3.6 billion, 2,000-job second assembly line for its San Antonio plant in July 2026, doubling its manufacturing footprint.

Source, verified 2026-09-05

03data centers

Castroville, on San Antonio's west side, is a fast-growing data center cluster

Castroville, on San Antonio's west side, is a fast-growing data center cluster: Microsoft's SAT82 project (filings of $482.6 million in July 2024 and $400 million in January 2026) sits in a cluster with over $2.19 billion in confirmed investment as of April 2026.

Source, verified 2026-09-05

Where conductive and static dissipative sit on the resistance scale 10³10⁴10⁵10⁶10⁷10⁸10⁹10¹⁰10¹¹10¹²10¹³ CONDUCTIVE STATIC DISSIPATIVE INSULATIVE 2.5 x 10⁴ to 1.0 x 10⁶ ohms. Fastest bleed. Specified where a spark is the hazard. Anything above 10⁹ is an insulator and holds a charge instead of moving it. ANSI/ESD STM7.1 · bands published by the ESD Association
The two static control bands, drawn where they sit on the scale. Everything to the right of 10⁹ ohms is an insulator.

The customer is the auditor

An aerospace program in San Antonio treats the floor's qualification and reverification records as controlled documents, which changes what has to be handed over more than it changes the floor.

Getting there. Crew travels from the Spring shop (via I-10).

The document behind a San Antonio job

ANSI/ESD STM97.1-2025 is the one worth reading first for work like this. System resistance measurement of a person, their footwear and the floor as one circuit. This is the test behind the S20.20 ceiling.

01

A 2025 edition, replacing 2015

The current edition is 2025 and it supersedes the 2015 one. If your program document cites the 2015 edition it is not wrong, it is simply on an older revision, and it is worth checking what changed before your next audit.

Questions from San Antonio

Our ESD requirement came from a customer contract, not a code. Does that change anything?

It changes who you are satisfying, not what the floor has to do. The measurements are still STM7.1 for the floor[2] and STM97.1 for the person, footwear and floor together[3]. What tends to be stricter is the documentation and retention.

Do you handle the whole job in San Antonio or just the coating?

The whole job: removing what is down, preparing the slab, the grounding network, the system itself and the cure schedule around your operation. Prep and grounding are where most of the work is. How it runs.

Is San Antonio inside your normal service area?

Yes. Bexar County is covered on the regular Texas schedule, so a job here does not carry a travel premium the way a one off out of state trip would.

Also in San Antonio-New Braunfels

Crews working San Antonio cover Castroville, Austin, Baytown, Conroe on the same run, so a job in Bexar County rarely stands on its own.

Sources

Publishers cited on this page, and how many times each one is citedesda.org1webstore.ansi.org1
2 citations on this page, across 2 publishers. Every figure above is one of them.
  1. ANSI/ESD STM7.1-2020, floor resistance test method for static control flooring

    Floor systems resistive characterization: the test method for qualifying floor materials before installation and for accepting and monitoring them after installation.

    www.esda.org
  2. ANSI/ESD STM97.1-2025, person plus footwear plus floor system resistance test

    System resistance measurement of a person, footwear, and floor tested together; this is the test behind S20.20's under-1.0 x 109 ohm system ceiling.

    webstore.ansi.org

Every number on this page came from one of those documents. Send us the room and we will tell you which of them your floor has to answer to.

San Antonio, Texasstatic control flooring
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