StandardsStandard explainer

ANSI/TIA-942-C explained

ANSI/TIA-942-C is the May 2024 revision of the Telecommunications Infrastructure Standard for Data Centers. TIA states that it specifies infrastructure requirements for data centers and computer rooms of any size, including enterprise and multi-tenant facilities.

PUBLISHER

Telecommunications Industry Association

DOCUMENT

ANSI/TIA-942-C

May 2024 revision

PRIMARY SCOPE

Data center infrastructure

SOURCE STATUS CHECKED

23 August 2026

STANDARD OVERVIEW

What ANSI/TIA-942-C covers

The standard addresses site location, architecture, telecommunications, electrical and mechanical infrastructure, fire safety, physical security, monitoring, and related infrastructure considerations. Revision C also incorporates changes connected with newer technologies, sustainability, and current industry practice.

01

Rating terminology

ANSI/TIA-942 uses Rated-1 through Rated-4. The selected level should follow the owner's risk and business requirements; a higher number is not automatically the correct investment decision.

02

Readiness support

4sight can establish requirements, review designs, assess gaps, organize evidence, and prepare corrective actions for an authorized assessment.

03

Certification boundary

TIA states that certification is performed through TIA-licensed certification bodies. 4sight does not issue an accredited facility certificate.

TIAMAY 2024RATED-1 TO RATED-4INFRASTRUCTURE

A TIA rating must not be called a Tier; Tier terminology belongs to Uptime Institute's separate system.

Questions to resolve before selecting it

01.

Facility scope

Which facility, phase, systems, and spaces are in scope?

02.

Rating objective

Which rating level is supported by the business risk analysis?

03.

Assessment objective

Is the objective design review, constructed-facility assessment, readiness, or certification?

04.

Edition and program

Which edition and assessment program apply to the contract?

05.

Required evidence

What evidence must designers, contractors, suppliers, and operators produce?

Publisher sources

TIA standard page

Publisher sources

TIA certification program

Source status checked

23 August 2026

Related comparison

TIA ratings and Uptime Tiers

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