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2024 International Plumbing Code - Residential
Chapter 8: Indirect Special Waste

Quiz: 2024 International Plumbing Code - Residential Chapter 8: Indirect Special Waste

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1. Which of the following protections is required for a commercial ice storage machine that discharges to the building drainage system?

Direct connection to the sanitary sewer
Protection against backflow, flooding, fouling, contamination and stoppage
A backwater valve installed in the branch line
Connection to a grease interceptor

2. How must a multiple-compartment sink used for food handling in a commercial kitchen be connected to the waste receptor?

Commonly trapped and directly connected
Through a single indirect waste pipe shared by all wells
Each well must discharge independently through an air gap
Through an air break with a shared common trap

3. What are the requirements for a floor drain located inside a walk-in freezer that is subject to freezing conditions?

The drain must be directly connected with a backwater valve
The drain must be trapped and use heat-tracing
The waste line shall not be trapped and must discharge to a receptor outside the freezing area
The drain must be connected to the storm drainage system

4. Which type of indirect connection is mandatory for equipment discharging potable water, such as a sterilizer, into the drainage system?

Air break
Air gap
Direct connection
Mechanical check valve

5. In a non-residential setting, which connection method is required for sinks used for washing, rinsing, or sanitizing utensils and dishware?

Direct connection to the sanitary stack
Indirect connection through an air gap only
Indirect connection through an air gap or an air break
Direct connection through a grease interceptor

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