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| Section | Objectives |
|---|---|
| Topic 1: Fire Protection and Fire-Resistance | - Fire protection systems and related provisions - Noncombustible protection and protection of mass timber elements - Fire-resistance requirements |
| Topic 2: Structural Inspection | - Mass timber structural elements - Structural loads and related code requirements - Connections and fastening systems |
| Topic 3: Code Compliance and Related Requirements | - Documentation and verification of compliance - Energy code requirements applicable to mass timber buildings - Sound transmission requirements |
| Topic 4: Tall Mass Timber Building Code Provisions | - Mass timber materials and construction requirements - International Building Code requirements for tall mass timber construction - Types IV-A, IV-B and IV-C construction |
| Topic 5: Special Inspection Requirements | - Inspection of connections and protective materials - Inspector duties and responsibilities - Special inspection procedures for tall mass timber buildings |
| Topic 6: Construction Fire Safety | - International Fire Code requirements - Protection of mass timber during construction - Construction-phase fire safety requirements |
>> 93-Tall-Mass-Timber-Buildings Valid Test Questions <<
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NEW QUESTION # 31
Periodic special inspection of sealants or adhesives shall be conducted where sealants or adhesives are part of a mass timber building element as designated in the approved construction documents.
All of the following statements are correct in reference to sealants or adhesives in mass timber buildings except:
Answer: A
Explanation:
Option C is the incorrect statement. The sealing inspection requirements in IBC Section 1705.20 do not automatically apply to every item classified as a "joint" under Section 202. They apply specifically where a sealant or adhesive required by Section 703.7 is installed on mass timber building elements identified in the approved construction documents.
Section 703.7 addresses abutting edges and intersections of fire-resistance-rated mass timber elements and intersections between mass timber and other materials where both elements require a fire-resistance rating.
These conditions require periodic special inspection because continuity of the air seal affects the fire performance assumed for the timber assembly.
Option A is correct: qualifying sealants must comply with ASTM C920. Option B is also correct: adhesives used for this purpose must comply with ASTM D3498. Option D reflects the required inspection of sealant applications at the prescribed abutting edges and intersections, although the technically precise term is "mass timber building elements." Fire-resistant joint systems are governed separately by IBC Section 715 and may require inspection under Section 1705.18. The two inspection categories must not be treated as interchangeable.
References/Topics: 2021 IBC Sections 703.7, 715, 1705.18 and 1705.20; ASTM C920; ASTM D3498.
NEW QUESTION # 32
Sealants used to resist passage of air in construction Type IV-A, shall be in accordance with which of the following standards?
Answer: D
Explanation:
ASTM C920 is the required standard for sealants used under the IBC mass timber air-sealing provision.
Option C is therefore correct. Section 703.7 applies to Type IV-A construction and requires compliant sealant or adhesive at specified interfaces involving fire-resistance-rated mass timber elements.
The sealing requirement reduces the movement of air, heat, and combustion gases into gaps that could expose additional timber surfaces and undermine the rated performance assumed by the approved design. The sealant must not merely appear to close the opening; it must be the specified product and installed within its approved joint dimensions and substrate conditions.
ASTM A36 is a structural steel material specification. ASTM E119 establishes procedures for fire testing building construction and assemblies but does not qualify elastomeric sealant products. ASTM F1667 covers driven fasteners such as nails, spikes, and staples and has no application to this sealing requirement.
Under Section 1705.20, installation is subject to periodic special inspection where the Section 703.7 sealant is applied. Inspection should occur before concealment and confirm continuity, adhesion, backing, joint depth, surface cleanliness, and compliance with the approved documents.
References/Topics: 2021 IBC Sections 703.7 and 1705.20; Type IV-A construction; ASTM C920.
NEW QUESTION # 33
All of the following combustible elements may be used in mass timber buildings except:
Answer: D
NEW QUESTION # 34
Regarding water supply for the protection of buildings under construction, when combustible building materials of the building under construction are delivered to a site, the minimum fire flow provided shall be
_____ gpm.
Answer: C
Explanation:
The minimum required fire flow is 500 gallons per minute. Therefore, option C is correct.
Under 2021 IFC Section 3313.2, an approved water supply must be available when combustible building materials for the building under construction are delivered to the project site. The hydrant supplying the required flow must be located within the prescribed distance of the combustible materials as measured along an approved fire apparatus access route. Where one hydrant cannot provide coverage to all combustible material locations, additional hydrants are required.
The 500-gpm requirement is the initial minimum associated with the delivery of combustible building materials. It should not be confused with the potentially greater fire-flow requirements applicable after vertical construction of a Type III, IV, or V building begins. Depending on fire separation distance and the building's calculated final fire-flow demand, a larger supply may be required under subsequent provisions.
Options A and B provide inadequate suppression capacity. Option D is not the baseline amount prescribed for the condition stated in the question. Inspectors and site safety personnel should verify that the water source is operational and accessible before substantial quantities of mass timber arrive on-site.
References/Topics: 2021 IFC Sections 3313.1 and 3313.2; construction-site water supply and combustible building materials.
NEW QUESTION # 35
Which of the following provisions for mass timber used for interior exit and elevator hoistway enclosures is true?
Answer: C
Explanation:
Option A correctly applies the protection requirements for mass timber used in qualifying interior exit and elevator hoistway enclosures. Where a two-hour, or 120-minute, fire-resistance rating is required, the noncombustible protection must contribute not less than two-thirds of that required rating. Two-thirds of 120 minutes is 80 minutes.
The 2021 IBC provisions for Type IV-A require interior mass timber surfaces to be protected with compliant noncombustible materials. The assigned protection time is determined under Section 722.7 and cannot be less than the applicable minimum. Option B is incorrect because 40 minutes would provide only one-third of a two-hour rating; Type IV-B protected mass timber generally requires at least 80 minutes for a two-hour element. Option C does not correctly describe the special protection path applicable to mass timber exit and hoistway enclosures. Option D is also incorrect because Type IV-HT is not governed by the tall mass timber enclosure provision stated in the question.
The inspector must verify the total assigned protection time, membrane type, number of layers, fastening, joints, corners, penetrations, and continuity on both required faces of the enclosure.
References/Topics: 2021 IBC Sections 602.4, 602.4.1.2 and 722.7.1; protection of mass timber shaft and exit enclosures.
NEW QUESTION # 36
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