ICC Commercial Mechanical Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the ICC Commercial Mechanical Exam with our comprehensive quiz. Practice with multiple choice questions, flashcards, and detailed explanations. Boost your confidence and ace your exam!

Practice this question and more.

What is the minimum nominal size for exhaust ducts for domestic clothes dryers?

3 inches in diameter
4 inches in diameter
5 inches in diameter
6 inches in diameter

The correct answer is: 4 inches in diameter

The minimum nominal size for exhaust ducts for domestic clothes dryers is 4 inches in diameter. This size is crucial for ensuring that the dryer can effectively vent moisture and lint, which can otherwise lead to decreased performance and potential fire hazards. A 4-inch duct is typically sufficient to allow for proper airflow, reducing the risk of blockages and ensuring that the dryer operates efficiently. Ducts that are smaller than this size can restrict airflow, leading to longer drying times and increased energy consumption. Furthermore, compliance with building codes often mandates this minimum size to ensure safety and efficiency in residential settings. This standard is widely accepted in both building codes and manufacturer recommendations, solidifying its importance in mechanical design and installation practices for dryers.