CID Space Planning and Building Codes

Question 1

What is the minimum clear width required for residential doorways under ADA guidelines?

Accepted Answer

32 inches clear opening (36-inch door typically required)

Answer

ADA requires a minimum 32-inch clear opening for doorways, which typically means a 36-inch wide door installed to provide adequate clearance for wheelchair passage.

Question 2

What is a space plan in interior design?

Accepted Answer

A scaled drawing showing the arrangement of furniture, fixtures, and circulation paths within a floor plan

Answer

A space plan is a scaled floor plan showing the layout of furniture, equipment, fixtures, and circulation pathways, considering function, traffic flow, accessibility, and spatial relationships.

Question 3

What is the work triangle concept in kitchen design?

Accepted Answer

The optimal arrangement connecting the sink, stove, and refrigerator with total distances of 13-26 feet

Answer

The kitchen work triangle connects the three primary work stations (sink, stove, refrigerator) with total distances between 13-26 feet, with each leg between 4-9 feet, minimizing steps during food preparation.

Question 4

What are the standard ceiling heights for residential and commercial spaces?

Accepted Answer

Residential: 8-9 feet minimum; commercial: 9-10 feet minimum (varies by code and jurisdiction)

Answer

Building codes typically require minimum 8-foot ceiling heights for habitable residential rooms and 7.5 feet for basements. Commercial spaces vary by use and occupancy type, generally requiring 9-10 feet minimum.

Question 5

What is egress in building code terminology?

Accepted Answer

The path of exit travel from any point in a building to a public way, including exits and exit access

Answer

Egress refers to the means of exiting a building, including exit access (path to an exit), the exit itself (doors, stairways), and exit discharge (path from exit to the public way). Building codes specify minimum egress requirements.

Certified Interior Designer (CID) Practice Test

Certified Interior Designer (CID) Practice Test

CID Space Planning and Building Codes