California IDEX Practice Exam

Where could small ductwork most easily be placed within?

1. Beam-and girder steel

2. Flat-plate concrete

3. Open-web steel joists

4. Twin-tee concrete

The correct answer is: Flat-plate concrete

The placement of small ductwork is considerably facilitated within flat-plate concrete structures. This type of construction allows for a flat and unobstructed ceiling, which makes it easier to run ductwork without encountering the complications posed by beams or other structural elements. In flat-plate concrete, the level surfaces provide ample space for ducts, allowing for a more straightforward installation process compared to other options which may have additional structural members that could hinder or complicate the routing of small ducts. Other constructions like beam-and-girder steel and open-web steel joists may introduce challenges due to the presence of structural elements that require careful navigation and planning.