Match ASME, IEEE, ASTM, ACI and other standards bodies to the documents engineers use, and read a standard designation.
Why this matters
Engineering documents are full of short codes: "ASTM A992", "ACI 318", "ASME B31.3", "IEEE 1584", "NFPA 70". Each points to a standard that thousands of engineers, manufacturers and inspectors rely on, so that a steel beam, a concrete mix or a circuit breaker means the same thing everywhere. Knowing which body publishes what lets you find the right document quickly, specify materials correctly and understand what a reviewer is asking for.
The core idea: codes, standards and who writes them
- A standard is a published document that sets requirements, test methods, specifications or recommended practice, agreed by a committee through a consensus process.
- A code is a standard (or a collection) intended to be adopted into law, such as a building code or electrical code.
- A standard becomes mandatory when a code or a contract references it. On its own it is voluntary.
In the United States, ANSI (the American National Standards Institute) does not usually write technical standards itself; it accredits the organisations that do and approves American National Standards. Internationally, ISO and IEC (International Electrotechnical Commission) publish standards used worldwide.
The main bodies and what they cover
| body | known for | examples |
|---|---|---|
| ASME (American Society of Mechanical Engineers) | pressure equipment, piping, mechanical components, drawings | Boiler and Pressure Vessel Code (BPVC); B31 piping codes such as B31.1 power piping and B31.3 process piping; Y14.5 dimensioning and tolerancing (GD&T) |
| IEEE (Institute of Electrical and Electronics Engineers) | electrical power, electronics, communications | IEEE 1584 arc-flash hazard calculations; IEEE 802 networking (802.3 Ethernet, 802.11 Wi-Fi); the National Electrical Safety Code (NESC, C2) for utility systems |
| ASTM International | material specifications and test methods | ASTM A992 structural steel for wide-flange shapes; ASTM C39 compressive strength testing of concrete cylinders; ASTM E8 tension testing of metals |
| ACI (American Concrete Institute) | concrete design and construction | ACI 318 Building Code Requirements for Structural Concrete; ACI 301 specifications for concrete construction |
| ASCE (American Society of Civil Engineers) | loads and civil infrastructure | ASCE 7 minimum design loads (wind, snow, seismic, live) |
| AISC (American Institute of Steel Construction) | structural steel design | AISC 360 specification for structural steel buildings |
| NFPA (National Fire Protection Association) | fire and electrical safety | NFPA 70 (NEC); NFPA 70E electrical safety in the workplace; NFPA 13 sprinkler systems |
| UL (UL Standards & Engagement) | product safety standards and the listing and certification of products by UL Solutions | UL 508A industrial control panels |
How to read a standard designation
Designations carry information. Take ASTM A992/A992M-yy, where yy stands for the edition year:
A: ASTM's letter for ferrous metals (C is for cementitious, ceramic, concrete and masonry materials; D for miscellaneous materials such as plastics and soils; E for miscellaneous subjects including many test methods).992: the standard number./A992M: the metric (SI) companion.-yy: the last two digits of the edition year (for example-20would mean 2020).
Many standards are reapproved or revised every few years. A project specification should cite the edition, or the code that references it should fix the edition. As with codes, the edition that applies is the one the contract or the adopted code calls up, not necessarily the newest.
Worked example: matching standards to a task
| task | where you look first |
|---|---|
| Specify the steel grade for a building's wide-flange beams | ASTM A992 (material), designed to AISC 360 |
| Check what strength test the concrete lab should run on cylinders | ASTM C39 |
| Design reinforced-concrete beams in a US building | ACI 318, as adopted through the building code |
| Design a process-plant piping system | ASME B31.3 |
| Estimate incident energy for an arc-flash study | IEEE 1584, with workplace practices from NFPA 70E |
| Determine snow and wind loads on a roof | ASCE 7 |
Getting access
Standards are usually sold, and fees and access terms change, so check the publisher (checked on 2026-10-23): www.asme.org/codes-standards, standards.ieee.org, www.astm.org, www.concrete.org, www.asce.org/publications-and-news/asce-7 and www.nfpa.org. University libraries and employers often hold subscriptions; NFPA and ICC offer free read-only access to many codes.
Common mistakes
- Confusing the material standard with the design standard. ASTM A992 says what the steel is; AISC 360 says how to design with it.
- Citing no edition in a specification.
- Assuming a standard is law. It is mandatory only when referenced by an adopted code or a contract.
- Using a summary table from the internet instead of the standard itself.
Quick recap
- Standards are consensus documents; codes are standards meant for adoption into law.
- ASME: pressure equipment and piping. IEEE: electrical, electronics and communications. ASTM: materials and tests. ACI: concrete. Also ASCE 7 loads, AISC steel, NFPA fire and electrical safety, UL product safety.
- Read designations for the number, metric version and edition year.
- The edition that applies is set by the adopted code or the contract.
Try it
Open the Do tab and take the quiz to match standards bodies to real engineering tasks.