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2024 International Residential Code (IRC)
Chapter 33 Storm Drainage

Quiz: 2024 International Residential Code (IRC) Chapter 33 Storm Drainage

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1. Which of the following aspects is not explicitly governed by the provisions of Chapter 33, Storm Drainage, of the IRC?

Materials of storm drainage systems.
Design of storm drainage systems.
Maintenance of storm drainage systems.
Installation of storm drainage systems.

2. The 2024 International Residential Code (IRC) Chapter 33 primarily dictates regulations for:

Water supply piping within a residence.
Sanitary sewer systems connecting to public mains.
Materials, design, construction, and installation of storm drainage.
Fire sprinkler system requirements in residential buildings.

3. According to the IRC, subsoil drains are required to be one of which pipe types?

Solid-walled, gastight pipe.
Open-jointed, horizontally split, or perforated pipe.
Pressurized, solvent-welded pipe.
Reinforced concrete pipe.

4. What is the minimum required diameter for subsoil drains, as per the IRC?

2 inches (51 mm).
3 inches (76 mm).
4 inches (102 mm).
6 inches (152 mm).

5. When a building is subject to backwater, how must the subsoil drain be protected?

By a permanently sealed connection.
By an accessibly located backwater valve.
By a reduced-pressure zone backflow preventer.
By an atmospheric vacuum breaker.

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