IFC Blueprint Reading & Specifications 2 — Questions and Answers
Question 1: On construction drawings, which symbol typically indicates a fire-rated wall assembly?
- A dashed line with 'FR' notation
- A solid bold line with a fire rating tag or keynote (Correct answer)
- A dotted line with hatching pattern
- A double line with diagonal cross-hatching
Correct answer: A solid bold line with a fire rating tag or keynote
Fire-rated walls are typically shown as solid bold lines accompanied by a fire rating tag or keynote referencing the wall type schedule.
Question 2: What does the abbreviation 'UL' on a firestop specification typically reference?
- Upper Level floor plan
- Underwriters Laboratories listed system (Correct answer)
- Uniform Load calculation
- Underground Line conduit
Correct answer: Underwriters Laboratories listed system
UL refers to Underwriters Laboratories, whose tested and listed firestop systems are commonly specified by their UL system numbers on construction documents.
Question 3: A specification section using MasterFormat Division 07 84 00 pertains to which trade?
- Structural steel framing
- Firestopping (Correct answer)
- Spray-applied fireproofing
- Fire suppression systems
Correct answer: Firestopping
MasterFormat Division 07 84 00 is specifically designated for Firestopping within the thermal and moisture protection division.
Question 4: When a drawing legend shows a circle with a letter inside pointing to a wall, this typically represents a:
- Fire alarm pull station location
- Wall section or detail reference marker (Correct answer)
- Penetrating item schedule number
- Smoke detector mounting point
Correct answer: Wall section or detail reference marker
A circle with a letter or number and an arrow pointing to a wall is a detail reference marker directing the reader to a corresponding section cut or detail drawing.
Question 5: In a firestop specification, the term 'annular space' refers to:
- The yearly inspection interval for firestop assemblies
- The gap between a penetrating item and the edge of the opening (Correct answer)
- The space between two fire-rated walls
- The depth of firestop material applied to a joint
Correct answer: The gap between a penetrating item and the edge of the opening
Annular space is the gap between the penetrating item (pipe, cable, duct) and the edge of the opening through the rated assembly.
Question 6: Which plan view symbol most commonly identifies a fire damper location within a duct penetrating a rated wall?
- A filled diamond on the duct centerline
- Two parallel diagonal lines crossing the duct symbol (Correct answer)
- A circle with an 'X' inside the duct
- A square bracket around the duct symbol
Correct answer: Two parallel diagonal lines crossing the duct symbol
Two parallel diagonal lines crossing the duct symbol is the standard HVAC/mechanical drawing convention for indicating a fire damper.
Question 7: A specification that states 'firestop systems shall be installed per manufacturer's published installation instructions' is primarily establishing which requirement?
- The contractor must use only one manufacturer per project
- Installation must follow the tested conditions of the listed system (Correct answer)
- The owner must approve each manufacturer separately
- Inspections must be performed by the manufacturer's representative
Correct answer: Installation must follow the tested conditions of the listed system
Requiring installation per manufacturer's published instructions ensures the system is installed consistent with the tested conditions under which it received its fire rating.
IFC Blueprint Reading & Specifications 2
On construction drawings, which symbol typically indicates a fire-rated wall assembly?