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10.1: What is a PE?

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    142891
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    Many types of jobs require licensure including doctors, lawyers, public accountants, and engineers.

    A Professional Engineer (P.E.) is an engineer that holds a license to practice engineering in one or more states. The license symbolizes that the engineer has met the state’s education, exam, and professional experience requirements. This demonstrates competency in a specific field of engineering.

    The Stamping/Sealing of Project Work

    A Professional Engineer (PE) stamp or seal serves as a legal endorsement verifying that an engineering drawing, report, or specification was prepared by, or under the direct supervision of, a licensed engineer.

    Each state determines the specific rules for apply a stamp/seal to a project. The seal typically displays the engineer’s full name, license/registration number, state or provincial jurisdiction, and discipline (when required).

    To execute the stamp, the engineer applies the seal and then signs and dates the document directly over or adjacent to the seal. This process establishes legal accountability, confirms compliance with relevant codes and safety standards, and is required before plans can be submitted to regulatory authorities for construction or permit approvals.

    There are a number of approved methods for stamping/sealing project work. These include:

    Physical Seal: An image containing the seal artwork, engineer’s name, state, and license number is placed directly onto the document. The image is made using an ink rubber stamp or embossed impression.

    Graphic Seal Layer: An electronic image (PDF or CAD block) containing the seal artwork, engineer’s name, state, and license number is placed directly onto the drawing title block.

    Cryptographic Digital Signature: A Public Key Infrastructure (PKI) digital certificate, issued by a third-party Certificate Authority after verifying the engineer's identity, is applied to the electronic document.

    An engineering construction detail drawing showing an official-style circular Professional Engineer seal stamped on the plan with placeholder name and license number

    Example of a state-formatted Professional Engineer (PE) seal applied to a drawing. (Source: Public Domain / AI Generated)


    10.1: What is a PE? is shared under a not declared license and was authored, remixed, and/or curated by LibreTexts.

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