CDT - Construction Documents Technologist Building Codes & Standards 1

Question 1

Which building code classification system is used to determine the minimum fire-resistance rating required for structural elements based on building use and size?

Accepted Answer

Occupancy classification under the IBC

Answer

The IBC assigns every building an occupancy classification (A, B, E, F, H, I, M, R, S, U) that directly determines fire-resistance ratings, allowable floor area, building height, and required means of egress.

Question 2

What is the primary purpose of a building's 'construction type' classification under the IBC?

Accepted Answer

To establish allowable building height and area based on the combustibility and fire-resistance of structural materials

Answer

IBC Table 601 assigns fire-resistance ratings to structural elements based on construction type (I through V), and Tables 503–506 use that type to establish maximum allowable height and floor area.

Question 3

Under the Americans with Disabilities Act (ADA) Standards for Accessible Design, what is the minimum clear width required for an accessible route?

Accepted Answer

36 inches

Answer

The ADA Standards (section 403.5) require accessible routes to have a minimum clear width of 36 inches, though passing spaces of 60 inches are required at intervals where two wheelchairs cannot otherwise pass.

Question 4

Which ASTM standard is commonly referenced in construction documents to specify fire-resistance ratings obtained through testing of assemblies such as walls, floors, and roofs?

Accepted Answer

ASTM E119 — Standard Test Methods for Fire Tests of Building Construction and Materials

Answer

ASTM E119 establishes the test method used to determine fire-resistance ratings (in hours) for wall, floor, roof, and column assemblies, and those ratings are referenced directly in IBC Table 601 and listed assemblies.

Question 5

In the context of the IBC, what does 'means of egress' consist of?

Accepted Answer

The exit access, the exit, and the exit discharge — three distinct components

Answer

IBC Section 1003 defines means of egress as a continuous, unobstructed path comprising three parts: exit access (path to the exit), the exit itself (protected component such as an enclosed stair), and exit discharge (path from exit to a public way).

CDT - Construction Documents Technologist Practice Test

CDT - Construction Documents Technologist Practice Test

CDT - Construction Documents Technologist Building Codes & Standards 1