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| Section | Objectives |
|---|---|
| Topic 1: Fire-Resistance & Protection | - Noncombustible Protection & Encapsulation - Fire-Resistance-Rated Assemblies - Concealed Spaces Protection |
| Topic 2: Inspection Duties & Documentation | - Statement of Special Inspections - Inspection Reporting and Compliance Verification |
| Topic 3: General & Construction Types | - Construction Classification — Type IV-A, IV-B, IV-C
|
| Topic 4: Mass Timber Materials | - CLT, Glulam, NLT, SCL and Engineered Wood Products |
| Topic 5: Construction Fire Safety | |
| Topic 6: Structural & Connection Inspection | - Framing and Structural Elements - Connection Design and Protection |
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NEW QUESTION # 43
Which of the following products is not included in the definition of mass timber?
Answer: D
Explanation:
Prefabricated wood I-joists are engineered wood framing products, but they are not mass timber elements because their configuration does not meet the minimum solid cross-sectional dimensions required for Type IV mass timber construction. Option B is therefore correct.
An I-joist consists of relatively thin flanges connected by a thin structural web. Its efficient open- web-like cross section is fundamentally different from a large solid, laminated, built-up or panelized timber element. I- joists are separately regulated by IBC Section 2303.1.2 and are manufactured and evaluated in accordance with ASTM D5055.
Solid-sawn lumber can qualify as mass timber when it satisfies the minimum heavy-timber dimensions.
Structural glued-laminated timber is a recognized large-section engineered timber product, while cross- laminated timber is explicitly recognized as a panelized mass timber product and is regulated by ANSI/APA PRG 320.
The critical inspection point is that the term "engineered wood" does not automatically mean "mass timber." The special inspector must verify the product category, minimum dimensions, approved construction type, applicable product standard, identification marks and installation requirements shown in the approved construction documents.
References/Topics: 2021 IBC Chapter 2 definition of "Mass Timber"; Sections 2303.1.2, 2303.1.3, 2303.1.4 and 2304.11; ASTM D5055.
NEW QUESTION # 44
The International Building Code requires cross-laminated timber (CLT) to be manufactured and identified in accordance with which standard?
Answer: C
Explanation:
The governing standard is ANSI/APA PRG 320, Standard for Performance-Rated Cross-Laminated Timber.
Therefore, option A is correct. The 2021 IBC requires structural glued cross-laminated timber to be manufactured and identified in accordance with PRG 320, and Type IV provisions require CLT to bear a label demonstrating conformity with that standard.
PRG 320 addresses essential manufacturing and qualification requirements, including panel construction, layup, structural performance, adhesive qualification, dimensional tolerances, product marking and quality assurance. Product identification is particularly important to the special inspector because visual similarity alone does not establish that a panel is code compliant.
DOC PS 2 applies primarily to wood structural panels such as plywood and oriented strand board and is not the manufacturing standard for CLT. ANSI/AITC or ANSI/APA A190.1 applies to structural glued-laminated timber, commonly called glulam. ASTM D5055 covers the establishment and monitoring of structural capacities for prefabricated wood I-joists.
The inspector should verify that CLT panels retain legible identification and that the manufacturer, grade, layup and panel designation correspond to the approved construction documents.
References/Topics: 2021 IBC Sections 602.4 and 2303.1.4; Chapter 35; ANSI/APA PRG 320-2019.
NEW QUESTION # 45
One code-recognized method for calculating the fire-resistance rating of exposed wood members and decking is:
Answer: C
Explanation:
The intended answer is ANSI/AWC NDS Chapter 16. The video option uses "AWS," but the correct standards organization is the American Wood Council-AWC . Option D is therefore correct based on its intended reference.
IBC Section 722.1 expressly permits exposed wood members and wood decking to have their calculated fire resistance determined in accordance with Chapter 16 of the ANSI/AWC National Design Specification for Wood Construction. The method evaluates charring, the effective char depth, the reduced residual cross section, elevated-temperature effects, loading, and the remaining structural capacity for the required exposure period.
ACI 216.1 applies to concrete and masonry fire resistance. TMS 0216 addresses masonry assemblies. ASCE
29 Chapter 5 provides procedures for calculating the fire resistance of structural steel assemblies. Those references are code-recognized methods, but they apply to different construction materials.
For mass timber inspection, the approved calculations should identify the exposed surfaces, required rating, timber species or product, member dimensions, design loads, protective contribution, and connection treatment. Field reductions in member dimensions can invalidate the calculated fire resistance.
References/Topics: 2021 IBC Section 722.1; ANSI/AWC NDS Chapter 16; calculated fire resistance of exposed wood members and decking.
NEW QUESTION # 46
Which of the following requires continuous special inspection?
Answer: A
Explanation:
Adhesive anchors installed horizontally to resist sustained tension loads require continuous special inspection.
Therefore, option D is correct.
Continuous special inspection means that the special inspector must be present during the performance of the regulated work. This heightened oversight is necessary because horizontal or upwardly inclined adhesive- anchor installations resisting sustained tension are sensitive to installation variables such as borehole cleaning, adhesive proportioning, mixing, placement, embedment depth, temperature, cure time, and prevention of adhesive loss before curing. A concealed installation defect can substantially reduce long-term tension capacity.
The other listed activities are generally subject to periodic inspection under the mass timber special-inspection provisions. Periodic inspection allows the inspector to observe the work intermittently at appropriate stages rather than remaining present throughout the entire operation. Bolted connections, concealed mass timber connections, and anchorage of mass timber construction to deep foundation systems must still be inspected, but the code does not automatically designate each of those activities as continuous.
The inspector should also verify installer certification where required, approved adhesive-anchor evaluation documentation, expiration dates, storage conditions, drilling method, hole dimensions, and compliance with the approved structural documents.
References/Topics: 2021 IBC Sections 1705.3 and 1705.5.3; Table 1705.3; continuous inspection of adhesive anchors under sustained tension.
NEW QUESTION # 47
Which of the following is an acceptable alternative for protecting structural connections from fire in Type IV- A, IV-B or IV-C construction?
Answer: A
Explanation:
Option D directly reflects the engineering-analysis method authorized by 2021 IBC Section 2304.10.1. For structural connections in Type IV-A, IV-B, or IV-C construction, the analysis must demonstrate that temperatures at every relevant portion of the connection remain within prescribed limits for a period corresponding to the fire-resistance rating required of the connected structural element.
The code establishes two critical temperature-rise limits: an average rise of not more than 250°F and a maximum rise of not more than 325°F . For this purpose, the "connection" includes the connectors, fasteners, and those portions of the wood members that participate structurally in the connection.
Option A is incorrect because ASTM E136 is a test for determining whether a material is noncombustible; it is not the fire-resistance test method for a structural connection. Option B is not a code-recognized substitute for the required connection fire evaluation. Option C is insufficient because a manufacturer's generalized fire- performance representation does not establish the required code fire-resistance duration unless supported through an approved test, evaluation, or engineering analysis.
References/Topics: 2021 IBC Section 2304.10.1; engineering-analysis method for Type IV-A, IV-B, and IV- C structural connections.
NEW QUESTION # 48
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