CKD Codes, Standards & Safety 2

Question 1

Under the IRC, a kitchen range hood that exhausts more than how many CFM generally requires a makeup air system?

Accepted Answer

400 CFM

Answer

IRC M1503.6 requires makeup air for exhaust hoods capable of exhausting more than 400 CFM.

Question 2

Where must a residential kitchen exhaust hood duct terminate according to the IRC?

Accepted Answer

Outdoors

Answer

Kitchen exhaust must discharge to the outdoors, never into attics, crawl spaces, or other interior areas.

Question 3

What is the minimum intermittent exhaust rate the IRC requires for a kitchen?

Accepted Answer

100 CFM

Answer

IRC Table M1505.4.3 sets 100 CFM intermittent for kitchen local exhaust.

Question 4

Which duct material is appropriate for a residential range hood duct?

Accepted Answer

Smooth-interior galvanized steel

Answer

Range hood ducts should be smooth-interior metal such as galvanized steel, stainless steel, or copper.

Question 5

A client wants a gas cooktop installed directly beneath an operable window; what is the NKBA recommendation?

Accepted Answer

Do not place a cooking surface below an operable window

Answer

NKBA advises against cooking surfaces under operable windows due to drafts, burns from reaching over flames, and flammable window treatments.

CKD - Certified Kitchen Designer Practice Test