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Key Facts: Iran Nezam Civil Execution Exam Exam

Total Questions (Official Exam)

Exam Duration

Exam Format

Passing Score

Licensure Grade

Administering Authority

Pass the Iran Nezam Civil Execution licensure exam with our 100-question practice bank. Features 60-question 150-minute exam simulation, open-book reference tips, 1/3 negative marking penalties, and rigorous coverage of INBR Topics 7, 9, 10, 12, and Nashriyeh 4311. Independent English adaptation.

Sample Iran Nezam Civil Execution Exam Practice Questions

Try these sample questions to review concepts for the Iran Nezam Civil Execution Exam exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1According to INBR Topic 12 (Safety and Work Protection During Execution), what is the mandatory minimum height for the top guardrail of standard perimeter edge protection on elevated construction work platforms?
A.0.70 m above the walking/working surface
B.0.90 m above the walking/working surface
C.1.20 m above the walking/working surface
D.1.40 m above the walking/working surface
Explanation: Pursuant to INBR Topic 12 (Section 12-5-1), standard guardrail systems protecting workers from falls from height must have a top rail height between 0.90 m and 1.10 m (nominally 0.90 m minimum) above the walking or working platform level. An intermediate rail must also be installed halfway between the top rail and the platform surface.
2Under INBR Topic 12, what is the minimum required vertical height of a toe-board (قرقره or تخته پنجه) installed along the open sides of scaffolding and work platforms to prevent tools and materials from falling?
A.5 cm
B.10 cm
C.15 cm
D.25 cm
Explanation: Under INBR Topic 12 (Clause 12-5-1-3), all open sides of scaffolds and working platforms situated higher than 1.20 m from the ground must be fitted with protective toe-boards having a minimum vertical height of 15 cm above the floor level. The gap between the bottom edge of the toe-board and the working deck must not exceed 1 cm.
3When setting up portable straight or extension ladders on a jobsite in accordance with INBR Topic 12, what is the correct slope ratio (horizontal distance from the wall to vertical working height)?
A.1 horizontal to 1 vertical (45 degrees)
B.1 horizontal to 2 vertical (63 degrees)
C.1 horizontal to 4 vertical (approximately 75 degrees)
D.1 horizontal to 6 vertical (approximately 80 degrees)
Explanation: INBR Topic 12 (Clause 12-5-2-2) mandates that straight portable access ladders must be placed at an inclination where the base distance from the supporting vertical plane is one-quarter (1/4) of the vertical working length of the ladder (1 horizontal to 4 vertical, or roughly 75.5 degrees). This ensures stability against both base slippage and backward tipping.
4According to INBR Topic 12, how far must the side rails of an access ladder extend above the landing platform or floor level being accessed when no alternate hand-grab is provided?
A.At least 0.50 m
B.At least 1.00 m
C.At least 1.50 m
D.At least 2.00 m
Explanation: Pursuant to INBR Topic 12 (Clause 12-5-2-4), portable ladders used to gain access to an upper landing surface must have their side rails extend at least 1.00 m above the landing floor level. This extension provides secure handholds for workers stepping on or off the ladder rungs.
5Under INBR Topic 12, what is the minimum safe horizontal clearance distance that mobile cranes, hoists, and scaffolding must maintain from overhead electrical power lines carrying a voltage of up to 20 kV?
A.1.50 m
B.3.00 m
C.5.00 m
D.8.00 m
Explanation: In accordance with INBR Topic 12 (Clause 12-2-4-2), any construction activity, scaffolding, crane boom, or hoisting equipment operating in the vicinity of energized overhead power lines with a voltage rating up to 20 kV must maintain a strict minimum clearance distance of 3.00 m. For lines exceeding 20 kV, the minimum clearance increases to 5.00 m.
6According to INBR Topic 12, what is the minimum nominal width of a working platform (تخته یا سکوی کار) on tubular steel scaffolding intended for general masonry and bricklaying work?
A.30 cm
B.60 cm
C.90 cm
D.120 cm
Explanation: INBR Topic 12 (Clause 12-5-3-2) specifies that scaffolding platforms used for masonry or bricklaying (where both workmen and materials such as bricks and mortar tubs are situated) must have a minimum width of 90 cm. For light work without material storage, 60 cm is permissible.
7What is the maximum allowable thickness of timber planks (تخته‌های زیرپایی) used on scaffolding platforms according to INBR Topic 12, and what is their minimum thickness when supported on transoms spaced 1.5 m apart?
A.Minimum thickness 2.5 cm; maximum thickness 3.0 cm
B.Minimum thickness 5.0 cm; width at least 20 cm
C.Minimum thickness 1.8 cm; width at least 15 cm
D.Minimum thickness 7.5 cm; width at least 30 cm
Explanation: Under INBR Topic 12 (Clause 12-5-3-3), scaffold timber planks must be straight-grained, free from severe knots or rot, and possess a minimum nominal thickness of 5 cm (2 inches) with a width of at least 20 cm when supporting standard construction loads across bearer spans up to 1.5 m to 2.0 m.
8Under INBR Topic 12, scaffold planks resting on supports must overlap each other by at least how much distance, unless they are firmly secured or locked in place to prevent tipping?
A.5 cm
B.10 cm
C.20 cm
D.35 cm
Explanation: Pursuant to INBR Topic 12 (Clause 12-5-3-4), where scaffold planks overlap over an intermediate or end bearer, the overlap length must not be less than 20 cm, with the center of the overlap directly supported over a bearer or transom to prevent cantilever tipping.
9At what working height above the ground or floor level does INBR Topic 12 make the use of personal fall arrest systems (safety harnesses, lifelines, or safety nets) mandatory for workers exposed to open fall hazards?
A.1.20 m
B.2.00 m
C.3.50 m
D.5.00 m
Explanation: INBR Topic 12 (Clause 12-5-1-1) defines working at height as any work performed where there is a risk of falling from a height of 1.20 m or more above the floor, ground, or lower level. Whenever standard collective guardrails or barriers cannot be installed, personal fall arrest equipment (safety harness and lanyard anchored to an approved lifeline) is strictly mandatory.
10In construction excavation works under INBR Topic 12, what is the minimum clearance distance that excavated spoil (خاک حاصل از گودبرداری) and heavy machinery must maintain from the edge of the excavation crest?
A.At least 0.30 m
B.At least 0.60 m
C.At least 1.50 m
D.At least 2.50 m
Explanation: According to INBR Topic 12 (Clause 12-8-1-5), excavated soil, spoil heaps, and light construction materials must be placed at a clear distance of at least 0.60 m away from the edge of the trench or excavation pit. Furthermore, heavy vehicles and vibratory machinery require greater engineered setbacks to prevent surcharge-induced wall collapses.

About the Iran Nezam Civil Execution Exam Exam

The Iran Construction Engineering Organization (IRCEO / Nezam Mohandesi) Civil Execution Licensure Examination (آزمون ورود به حرفه مهندسان عمران - صلاحیت اجرا) is the official statutory licensing exam required for civil engineers to obtain the Grade 3 practicing license (پروانه اشتغال به کار مهندسی پایه ۳) in construction execution. Administered under the auspices of the Office of National Building Regulations and Building Control (دفتر مقررات ملی و کنترل ساختمان) within the Ministry of Roads and Urban Development, the exam tests real-world jobsite management, scaffolding safety, trench shoring, concrete mix batching and placement, rebar fabrication, formwork stripping, structural steel welding and bolting tolerances, and Iranian public works contract administration (نشریه ۴۳۱۱). This question bank provides an independent English-language practice adaptation.

Exam sponsor: Office of National Building Regulations and Building Control (inbr.ir), Ministry of Roads and Urban Development; delivered nationwide by the National Organization for Educational Testing (Sazman-e Sanjesh) educational services company. The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

60 four-option multiple-choice questions covering site safety (Topic 12), concrete and steel construction execution (Topics 9, 10), excavation/shoring (Topic 7), and Iranian Conditions of Contract

Time Limit

150 minutes

Passing Score

50 out of 100 (50%) — clause 6-4 of the official 1405 registration instruction, calculated after the negative-marking deduction

Exam / Certification Fees

Set per sitting and shown in the inbr.ir registration cart; the official 1405 registration instruction does not publish a fixed amount

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

25%

Construction Site Safety & Protection (Topic 12)

Safety responsibilities of the site supervisor and execution engineer, scaffolding types and inspection, ladder slope and anchoring, perimeter guardrails and toe boards, safety nets and personal fall arrest systems (PFAS), excavation and trench safety, crane hoisting protocols, jobsite electrical grounding and temporary power boards.

20%

Concrete Construction Execution (Topic 9)

Batching tolerances, transit mixer transit and agitation limits, slump and workability testing, concrete placement and compaction, construction joints, hot and cold weather concreting protocols, curing methods and minimum curing durations, formwork removal times and reshoring, rebar bending, spacing, concrete cover, mechanical couplers, and compressive strength acceptance criteria.

20%

Steel Construction Execution (Topic 10)

Structural steel fabrication and erection, column base plate levelling and non-shrink grouting, anchor bolt tolerances, welding processes (SMAW, GMAW, FCAW, SAW), preheat and interpass temperatures, weld visual and non-destructive testing (VT, PT, MT, UT, RT), high-strength bolt pre-tensioning methods (calibrated wrench, turn-of-nut, twist-off bolts), and erection plumbness tolerances.

20%

Deep Excavation & Shoring (Topic 7)

Geotechnical investigation requirements, hazard classification of excavations, shoring systems (soldier piles with lagging, Berlin wall, soil nailing, prestressed ground anchors, internal strutting, diaphragm walls), adjacent building settlement monitoring and instrumentation, ground dewatering, and daily safety checklist compliance.

15%

Contract Administration & Site Operations (Conditions of Contract)

General Conditions of Construction Contracts (نشریه ۴۳۱۱ - شرایط عمومی پیمان), roles and obligations of Employer, Consultant, Contractor, and Workshop Head (سرپرست کارگاه), master work schedules, interim payment certificates (صورت‌وضعیت موقت), price escalation adjustments (تعدیل آحاد بها), variation orders (تغییر مقادیر کار), temporary and final acceptance (تحویل موقت و قطعی), defect liability, and contract termination vs. cancellation (Articles 46 and 48).

Preparing for the Iran Nezam Civil Execution Exam Exam

What You Need to Know

  • Passing score: 50 out of 100 (50%) — clause 6-4 of the official 1405 registration instruction, calculated after the negative-marking deduction
  • Assessment: 60 four-option multiple-choice questions covering site safety (Topic 12), concrete and steel construction execution (Topics 9, 10), excavation/shoring (Topic 7), and Iranian Conditions of Contract
  • Time limit: 150 minutes
  • Exam / certification fees: Set per sitting and shown in the inbr.ir registration cart; the official 1405 registration instruction does not publish a fixed amount Official sources

Using Our Practice Resources

  • Work through all 100 available questions
  • Review every answer and explanation
  • Track weak areas and revisit them
  • Use our AI tutor for tough concepts

Iran Nezam Civil Execution Exam: Suggested Study Strategy

1Tab and label your INBR booklets: Given the 150-minute time constraint for 60 questions, index key chapters of Topic 12 (Safety), Topic 9 (Concrete), Topic 10 (Steel), Topic 7 (Geotechnical), and Nashriyeh 4311 with colored sticky tabs for rapid retrieval.
2Master Topic 12 safety dimensions: Memorize or quickly reference mandatory safety dimensions including guardrail heights (0.90 m to 1.10 m), toe board heights (15 cm), ladder inclinations (4 vertical to 1 horizontal), and safe clearances from overhead electrical power lines.
3Know concrete stripping times cold: Be prepared to calculate minimum stripping times for slab and beam formwork under Topic 9 based on cement type and ambient temperature ranges (above 10°C, 5°C to 10°C, and 0°C to 5°C).
4Understand high-strength bolting procedures: Distinguish clearly between snug-tight (پیش‌سفتیدگی) and fully pre-tensioned (پیش‌کشیدگی کامل) bolt connections, along with the specific rotation increments required by the turn-of-nut method.
5Master Conditions of Contract (Nashriyeh 4311): Study Articles 28 (site handover), 30 (time extensions), 37 (interim payments), 39 (temporary handover), 46 (contract termination for contractor default), and 48 (contract suspension/cancellation by employer).
6Respect negative marking: Never make blind guesses. If you can eliminate two incorrect distractors, calculating the expected value makes an educated guess advantageous; otherwise, leaving the question blank protects your earned points.

Frequently Asked Questions

What is the structure and duration of the Iran Nezam Civil Execution exam?

The official exam consists of 60 four-option multiple-choice questions administered over 150 minutes (2.5 minutes per question). The examination is conducted in an open-book (کتاب‌باز) format, allowing candidates to bring physical copies of the Iranian National Building Regulations (مباحث مقررات ملی ساختمان), standard publications such as Nashriyeh 4311, and approved reference handbooks into the examination hall.

How does negative marking work in the Nezam Mohandesi licensure exam?

The exam applies a 1/3 negative marking rule (نمره منفی): each correct answer awards 1 full mark (+1.00), while each incorrect answer deducts 1/3 of a mark (-0.333). Unanswered questions receive 0 marks. To achieve the 50% passing threshold (30 net points out of 60), candidates must manage risk carefully and avoid random guessing.

What are the eligibility requirements for the Civil Execution licensure exam?

Candidates must hold an accredited Bachelor's degree (B.Sc.), Master's degree (M.Sc.), or Doctorate (Ph.D.) in Civil Engineering. Candidates must have accumulated at least 3 years of verified post-graduation practical work experience for a Bachelor's degree, 2 years for a Master's degree, or 1 year for a Ph.D. In addition, candidates must complete mandatory technical preparation courses and obtain a workshop safety (HSE) certificate.

What is the difference between Civil Supervision (نظارت) and Civil Execution (اجرا)?

Civil Supervision focuses on code compliance oversight, inspection, verification of structural drawings, and reporting defects to the municipal building authority on behalf of the engineering organization. Civil Execution licenses the engineer to act as a legally recognized Constructor/Contractor (مجری ذیصلاح) or Head of Workshop (سرپرست کارگاه), carrying direct legal, technical, and safety liability for all on-site construction operations, workers, equipment, and structural execution quality.

Is this practice bank an official test or translation?

No. This question bank is an independent English-language educational adaptation designed by experienced civil engineers. It faithfully mirrors the technical rigor, code references, calculation standards, and conceptual balance of the official exam, but is not an official release or authorized translation by the Ministry of Roads and Urban Development or IRCEO.