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Connecticut (CT) SM-2 Limited Sheet Metal Journeyperson Practice Exam Questions and Answers | 2026 Update | 100% Correct.
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146

maart 2026

2025/2026

A+
1. A print indicates a ductile iron pipe (DIP) penetration through a 2-hour fire-rated concrete floor. The approved firestop system must maintain a rating of at least: A) 1 hour B) 2 hours C) 3 hours D) 4 hours Rationale: B is correct. Firestop systems for penetrations must restore the fire-resistance rating of the assembly being penetrated. Since the floor has a 2-hour rating, the firestop system must be rated for a minimum of 2 hours to maintain the integrity of the fire separation. ...
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