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Air Force AFSC · Engineering

3E3X1 Structural

Current service use not established

This code is listed in the directory. Inclusion alone does not confirm current service use.

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Overview

A Structural specialist constructs, repairs, and modifies base buildings and other structures from their foundations to their rooftops. The specialist uses materials, tools, and equipment to build improvised emergency disaster relief shelters and quality of life projects.

Minimum ASVAB: M 47

ASVAB policy: Not policy-reviewed · coverage unknown · as of 2026-10-19

Program scope has not been reviewed.

Policy applicability and coverage of the program's score routes have not been reviewed. Shown-route arithmetic is not an eligibility decision.

Source: dafecd-atch4-2025-10-31 (source date 2025-10). Policy applicability has not been established.

See if you would hit this score: free ASVAB practice test

Skill levels: 3E311 helper · 3E331 apprentice · 3E351 journeyman · 3E371 craftsman

Core Skills

  • Wood, masonry, metal and concrete repairs
  • Building and utility component fabrication
  • Environmental compliance in structural work

Civilian Career Paths

Career associations are editorial assessments of the cited evidence, not an official crosswalk unless the evidence explicitly says so. O*NET supplies civilian occupation information, not proof of a military match. Related experience does not confer civilian qualifications. Tasks and tools below describe civilian work, not military training.

Carpenters

Construction, repair and modification of wooden buildings provide directly relevant experience for carpentry work.

How to prepare: Bring examples of your wooden-building projects to a carpentry employer or apprenticeship provider for a skills assessment and targeted gap training.

What the civilian work involves
  • Measure and mark cutting lines on materials, using a ruler, pencil, chalk, and marking gauge.
  • Assemble and fasten materials to make frameworks or props, using hand tools and wood screws, nails, dowel pins, or glue.
  • Shape or cut materials to specified measurements, using hand tools, machines, or power saws.

Brickmasons and Blockmasons

Construction and repair of masonry buildings provide relevant experience for brick and block work.

How to prepare: Ask a masonry employer or apprenticeship provider to assess your layout, mortar application and brick or block cutting skills against your documented masonry projects.

What the civilian work involves
  • Measure distance from reference points and mark guidelines to lay out work, using plumb bobs and levels.
  • Apply and smooth mortar or other mixture over work surface.
  • Break or cut bricks, tiles, or blocks to size, using trowel edge, hammer, or power saw.

Notes & Sources

  • The duty summary covers several building materials but does not establish depth in each trade; prioritize the path supported by your completed wood or masonry projects.
Evidence for this guidance (3 documents)
  1. DAFECD, 30 Apr 26: STRUCTURAL (3E3X1)

    [1] Specialty Summary section "STRUCTURAL"; normalized cached text lines 9506-9527; explicit AFSC match for 3E3X1

    Supports: Wood, masonry, metal and concrete repairs, Building and utility component fabrication, Environmental compliance in structural work, Carpenters (O*NET 47-2031.00), Brickmasons and Blockmasons (O*NET 47-2021.00)

  2. O*NET: Carpenters

    [2] O*NET 30.3 occupational data

    Supports: Carpenters (O*NET 47-2031.00)

  3. O*NET: Brickmasons and Blockmasons

    [3] O*NET 30.3 occupational data

    Supports: Brickmasons and Blockmasons (O*NET 47-2021.00)

Defense contractor jobs for 3E3X1

Predecessor codes

Historical codes with documented links to 3E3X1. Each history page explains the change.

55210Structural Helper55230Apprentice Structural Specialist55250Structural Specialist55270Structural Technician55290Structural Superintendent552X0Structural552X2Metal Fabrication

Descriptions may be summarized for clarity. Verify all information with your branch career counselor or official military documentation before making career decisions.

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