26. When separate sanitary and storm drainage systems are installed on the same property

Answer: A

Explanation:

The sanitary and storm drainage piping shall be installed correctly to ensure proper function.

When separate sanitary and storm drainage systems are installed on the same property, the sanitary and storm drainage piping shall be installed to adhere to specific regulations and standards.

A) the sanitary and storm drainage piping shall be

This option is correct as it acknowledges the necessity of following guidelines for the installation of sanitary and storm drainage systems. It implies that there are specific regulations governing how these systems should be installed, which is critical for the effective management of waste and stormwater.

B) installed in separate trenches

This option is incorrect as it presents a method that is not necessarily required. While installing in separate trenches is a common practice to prevent cross-contamination, the given correct answer implies a broader guideline that may encompass various installation practices.

C) permitted to be laid side by side in one trench

This option is incorrect because it suggests a method that typically does not comply with standard regulations. Side-by-side installation can lead to complications, such as contamination, which is why clear guidelines are established for the separation of these two types of drainage systems.

D) installed on separate elevations if in the same trench

This option is incorrect as it introduces a method that may not adequately address the separation needed between sanitary and storm drainage systems. Elevation separation does not guarantee that the systems remain uncontaminated or function properly.

E) 12 inches apart if in the same trench

This option is incorrect, as it suggests a specific distance that does not align with the broader requirement implied in the correct answer. While maintaining a certain distance may be beneficial, the emphasis should be on adherence to proper guidelines rather than just a measurement.

Conclusion

The correct answer emphasizes that there are established requirements for the installation of sanitary and storm drainage systems, which are essential for ensuring their proper function and preventing contamination. Other options fail to encapsulate the necessity of following these guidelines or suggest practices that could compromise system integrity. Thus, recognizing the importance of adhering to regulatory standards is critical in drainage system installation.