NCIDQ Materials, Finishes, and Specifications 2

Question 1

What does STC (Sound Transmission Class) measure in wall assemblies?

Accepted Answer

Airborne sound isolation between spaces

Answer

STC rates how well a wall, floor, or ceiling assembly blocks airborne sound transmission; higher STC values indicate better sound isolation.

Question 2

Which material standard applies to hardwood veneer plywood used in casework and millwork?

Accepted Answer

HPVA HP-1 (Hardwood Plywood and Veneer Association)

Answer

HPVA HP-1 is the industry standard for hardwood and decorative plywood, covering veneer grades, core types, and tolerances used in architectural millwork.

Question 3

What is the primary difference between porcelain and ceramic tile from a specification standpoint?

Accepted Answer

Porcelain has lower water absorption (≤0.5%) and greater density

Answer

Porcelain tile is fired at higher temperatures, producing a denser body with water absorption of ≤0.5%, making it more durable and suitable for exterior or wet applications.

Question 4

In a finish schedule, what does 'PT-1' typically represent?

Accepted Answer

A paint type and color designation

Answer

In a finish schedule, designations like PT-1 identify specific paint specifications including sheen level, color, and manufacturer for application to defined surfaces.

Question 5

Which resilient flooring type consists of a photographic layer protected by a clear urethane wear layer?

Accepted Answer

Luxury Vinyl Tile/Plank (LVT/LVP)

Answer

LVT/LVP uses a photographic film layer under a urethane wear layer to simulate wood, stone, or tile patterns with high dimensional stability.

NCIDQ Exam Practice Test

NCIDQ Exam Practice Test

NCIDQ Materials, Finishes, and Specifications 2