CSLB Class B General Contractor's License Practice Exam

When running a chemical waste vent, it shall be:

1. Independent of the sanitary waste

2. Connected directly to the water main

3. Made of soldered brass type pipe

4. All of the above

The correct answer is: Independent of the sanitary waste

When running a chemical waste vent, the requirement for it to be independent of the sanitary waste system is crucial. This independence is vital to ensure that potentially hazardous materials do not contaminate the sanitary system, which could affect public health and environmental safety. Chemical waste vents are designed to handle specific types of waste that require different handling, treatment, and disposal methods compared to regular sanitary waste. Keeping these systems separate prevents cross-contamination and ensures compliance with health and safety regulations. The other options misrepresent the specifications for chemical waste vents. For instance, connecting directly to the water main can create significant hazards by mixing chemical contaminants with potable water supplies. Similarly, using soldered brass type pipe may not be standard or safe for all types of chemical waste, as certain chemicals can corrode or degrade specific materials. Thus, emphasizing the need for a dedicated and appropriately designed vent system reinforces the importance of safety and regulatory compliance in construction and waste management practices.