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123+ Free ICC S1 Structural Steel and Bolting Practice Questions

Prepare for the ICC Structural Steel and Bolting Special Inspector (S1) Certification exam with instant access — no signup required.

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2026 Statistics

Key Facts: ICC S1 Structural Steel and Bolting Exam

115

Questions in Full Current Route

ICC Current Exam Catalog

90

S1C + S1P Questions If GR Is Satisfied

ICC Current Exam Catalog

GR+S1C+S1P

Current Credential Path

ICC Special Inspector Certifications

75

Scaled Passing Score

ICC Support

$505+

Module Fees If GR Needed

ICC Store

65%

S1C High-Strength Bolting Weight

ICC Current Exam Catalog

Prepare for the current modular path, not the former integrated S1 exam. The full route is GR (25 open-book questions, 1 hour), S1C (60 open-book questions, 2 hours), and S1P (30 closed-book electronic-plan questions, 1.5 hours). An active ICC Special Inspector certification can satisfy GR, leaving S1C + S1P. ICC National Certification exams use a scaled passing score of 75.

Sample ICC S1 Structural Steel and Bolting Practice Questions

Try these sample questions to test your ICC S1 Structural Steel and Bolting exam readiness. Each question includes a detailed explanation. Start the interactive quiz above for the full 123+ question experience with AI tutoring.

1Which document is the special inspector's primary reference for deciding whether installed structural steel framing and bolting comply with the project requirements?
A.The erector's approved sequence by itself
B.The approved plans and specifications
C.The material certifications by themselves
D.Reports from a similar completed project
Explanation: The S1 inspector verifies work against the approved plans, project specifications, and applicable code-referenced standards. Shop drawings and submittals are useful only when they are approved and consistent with the contract documents. Personal preference or past practice cannot replace project-specific approved documents.
2A bolted connection does not match the approved structural drawings. What is the special inspector's first required action?
A.Record it and wait until the final report to give notice
B.Notify the contractor promptly so it can be corrected
C.Notify only the building official before telling the contractor
D.Select a field repair and direct the erector to perform it
Explanation: Observed deviations are first brought to the contractor's attention so they can be corrected promptly. If the discrepancy is not corrected, it is reported to the registered design professional and the building official as required by the special inspection process. The inspector documents the condition either way.
3What is the main purpose of a special inspection progress report for structural steel bolting work?
A.To document only the erector's internal quality-control checks
B.To record inspected work, tests, compliance, and discrepancies
C.To serve as the material certification for every steel heat
D.To approve connection substitutions through the reporting process
Explanation: Progress reports record what was inspected, what tests were performed or witnessed, and whether the observed work conformed to the approved documents. They create the project record needed by the building official and registered design professional. Reports do not replace material certifications or design approvals.
4Which item best describes the S1 special inspector's role on high-strength bolted steel connections?
A.Verify that bolted work matches the approved requirements
B.Choose a substitute bolt grade when the specified grade is unavailable
C.Approve a revised load path when the field connection will not fit
D.Replace the erector's required quality-control inspection program
Explanation: The S1 role is to verify materials, bolting procedures, and steel framing details against the approved documents and applicable standards. The inspector is independent of the erector's production quality control. Design decisions and substitutions remain with the design professional and approval process.
5Which report is typically required at the end of the special inspection assignment?
A.A final summary stating conformance and the disposition of discrepancies
B.A contractor completion certificate covering all construction work
C.A revised calculation package for every corrected connection
D.A laboratory summary replacing the special-inspection record
Explanation: The special inspection agency submits a final report summarizing required inspections and indicating whether inspected work was completed in conformance or how discrepancies were resolved. This helps the building official close the special inspection record. It is not a payment, design, or detailing document.
6Which condition is most clearly within the S1 inspector's material verification duties?
A.Matching delivered W-shapes to the specified size and grade
B.Confirming the joint type and tightening method used in the field
C.Checking erected member orientation against the framing plan
D.Evaluating an engineer's proposed repair calculation
Explanation: The S1C outline includes verification that steel shapes and bolts are the type, size, grade, and condition specified in the approved documents. Delivered member identification is a core material-verification task. Joint installation and frame orientation are separate inspection tasks, while evaluating a repair calculation belongs to the design professional.
7What is a mill test report primarily used to verify?
A.The quantities billed for each fabricated member
B.The chemical and mechanical properties of the steel heat
C.The installed pretension in a completed bolted joint
D.The location and orientation of each erected member
Explanation: Mill test reports provide traceability and show that steel material meets the specified standard, grade, and required chemical and mechanical properties. They support the inspector's material verification. They do not address labor, equipment operators, or occupancy classifications.
8Which high-strength bolt standard designation is commonly used for structural bolt assemblies such as A325 and A490 grades?
A.ASTM F3125
B.ASTM F436
C.ASTM F959
D.ASTM A992
Explanation: ASTM F3125 is the unified specification covering high-strength structural bolt grades including A325 and A490. ASTM F436 covers hardened steel washers, ASTM F959 covers compressible-washer-type direct tension indicators, and ASTM A992 covers structural steel shapes. The inspector must match the installed bolt grade to the approved documents.
9Why are bolt head markings important during inspection?
A.They support verification of bolt grade and manufacturer identity
B.They record the torque applied during final tightening
C.They identify whether the design joint is slip-critical
D.They certify that pre-installation verification passed
Explanation: Head markings help identify the bolt grade and manufacturer, supporting traceability to the specified bolting assembly. They do not reveal installed tension, connection type, or test results. The inspector still verifies installation requirements and required documentation.
10What should the inspector verify about bolt storage before installation?
A.Assemblies remain protected, identifiable, clean, and undamaged
B.Different bolt and nut lots have been combined to simplify distribution
C.Manufacturer-applied lubricant has been removed before verification testing
D.Containers remain open outdoors so components match field humidity
Explanation: Proper storage preserves the condition of bolting assemblies and helps maintain the installation characteristics verified during testing. Mixing, contamination, corrosion, or loss of lubricant can make installation unreliable. Heating bolts or stripping lubricant is not a normal acceptance step.

About the ICC S1 Structural Steel and Bolting Exam

The current ICC Structural Steel and Bolting Special Inspector (S1) credential uses separate modules: Special Inspector General Requirements (GR), Structural Steel and Bolting Codes (S1C), and Structural Steel and Bolting Plans (S1P). GR tests duties, discrepancies, and reports; S1C tests material verification, high-strength bolting, and limited framing observation; S1P tests electronic-plan interpretation, material identification, bolt assemblies, framing orientation, and base plates. Candidates who already hold an active ICC Special Inspector certification can satisfy the one-time GR requirement.

Assessment

Current modular path: GR has 25 open-book questions, S1C has 60 open-book questions, and S1P has 30 closed-book questions using electronic plan exhibits. An active ICC Special Inspector certification can satisfy GR, leaving 90 S1-specific questions.

Time Limit

4.5 hours across GR, S1C, and S1P; 3.5 hours for S1C + S1P when GR is already satisfied

Passing Score

Scaled score of 75 per ICC National Certification exam/module

Exam Fee

$505 minimum if GR is required; $420 for S1C + S1P if GR is already satisfied (International Code Council (ICC) through PRONTO online or Meazure Learning test centers)

ICC S1 Structural Steel and Bolting Exam Content Outline

25 questions • 1 hour • open book

GR — Special Inspector General Requirements

Duties and Responsibilities 60%, Notification of Discrepancies 20%, and Inspection Reports 20%. An active ICC Special Inspector certification can satisfy this one-time requirement.

60 questions • 2 hours • open book

S1C — Structural Steel and Bolting Codes

Material Sampling, Testing, and Verification 30% (Material Identification 17%, Material Sampling 13%); High-Strength Bolting 65% (Bolts/Nuts/Washers 23%, Pre-installation 17%, Installation/Testing/Inspection 25%); Steel Framing Observation 5% (orientation and member sizes 3%, base plates 2%).

30 questions • 1.5 hours • closed book

S1P — Structural Steel and Bolting Plans

Electronic plans are supplied with each question and external references are not permitted. Material Identification 17%, Bolts/Nuts/Washers 17%, and Steel Framing Observation 66% (orientation and member sizes 46%, base plates 20%).

How to Pass the ICC S1 Structural Steel and Bolting Exam

What You Need to Know

  • Passing score: Scaled score of 75 per ICC National Certification exam/module
  • Assessment: Current modular path: GR has 25 open-book questions, S1C has 60 open-book questions, and S1P has 30 closed-book questions using electronic plan exhibits. An active ICC Special Inspector certification can satisfy GR, leaving 90 S1-specific questions.
  • Time limit: 4.5 hours across GR, S1C, and S1P; 3.5 hours for S1C + S1P when GR is already satisfied
  • Exam fee: $505 minimum if GR is required; $420 for S1C + S1P if GR is already satisfied

Keys to Passing

  • Work through all 123 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

ICC S1 Structural Steel and Bolting Study Tips from Top Performers

1Build separate study plans for the current GR, S1C, and S1P modules; an active ICC Special Inspector certification can satisfy GR.
2Memorize each current module outline: GR is 60/20/20, S1C is 30/65/5, and S1P is 17/17/66.
3Practice S1P plan lookups without external references because the module is closed book and supplies an electronic plan exhibit with each question.
4Practice finding answers in approved plans, specifications, schedules, and connection details instead of relying only on field experience.
5Master RCSC joint type logic: snug-tightened, pretensioned, and slip-critical joints have different inspection requirements.
6Know when faying surface condition matters: slip-critical joints require more than just correct bolt pretension.
7Build a reporting checklist for discrepancies: notify the contractor, document the issue, and escalate uncorrected items to the registered design professional and building official.
8For materials, drill bolt head markings, ASTM F3125 grades, nut/washer compatibility, mill test reports, lot traceability, and protected storage.
9For plans, repeatedly practice member mark, grid, base plate, anchor rod, hole type, bolt diameter, and joint type lookups under time pressure.

Frequently Asked Questions

What is the ICC S1 Structural Steel and Bolting Special Inspector certification?

It is ICC's special inspector credential for structural steel framing and high-strength bolted connections. The current path combines GR duties and reporting, S1C code knowledge, and S1P electronic-plan interpretation.

Is the current ICC S1 path one exam or multiple modules?

The current credential path is modular. Candidates pass Structural Steel and Bolting Codes (S1C) and Structural Steel and Bolting Plans (S1P), plus either Special Inspector General Requirements (GR) or an active ICC Special Inspector certification that satisfies the one-time GR requirement. The former integrated S1 exam was replaced by modular testing in December 2017.

How many questions are on the ICC S1 exam?

The full current route has 115 questions: GR has 25, S1C has 60, and S1P has 30. Candidates whose active ICC Special Inspector certification satisfies GR take 90 S1-specific questions across S1C and S1P.

What score do I need to pass?

ICC states that National Certification exams use a scaled passing score of 75. Passing candidates receive a PASS result rather than a numerical score.

How much does the current modular S1 path cost?

Based on ICC module pages checked on July 28, 2026, GR is listed at $85, S1C at $210, and S1P at $210. That is $505 if all three modules are required, or $420 for S1C plus S1P if GR is already satisfied. Confirm prices in the ICC catalog before registering.

What should I study most for S1?

Treat each module separately. GR assigns 60% to Duties and Responsibilities, S1C assigns 65% to High-Strength Bolting, and S1P assigns 66% to Steel Framing Observation. Prioritize those large areas without neglecting material identification, sampling, discrepancies, reports, and base plates.

Does S1 cover structural welding?

S1 is Structural Steel and Bolting. ICC lists Structural Welding as a separate S2 special inspector path, and S2 requires the S1 Structural Steel and Bolting certification as part of that pathway.