7.3.1 Installing Sanitary Systems Explained
Key Concepts
- Site Preparation
- Pipe Laying
- Jointing Techniques
- Testing and Inspection
- Backfilling and Restoration
Site Preparation
Site preparation involves clearing the area, marking the layout, and ensuring the ground is level and free of obstructions. This step is crucial for a smooth installation process and proper functioning of the sanitary system.
Example: Clearing trees and rocks from the site and marking the path of the sewer line with stakes and strings.
Analogy: Think of site preparation as setting up a stage for a performance, ensuring everything is in place and ready for the main event.
Pipe Laying
Pipe laying involves positioning the pipes along the marked path. Proper alignment and slope are essential to ensure efficient flow and prevent blockages. Pipes should be laid with a slight downward slope towards the treatment facility or septic system.
Example: Laying PVC pipes in trenches with a slope of 1 inch per 10 feet to ensure water flows smoothly.
Analogy: Pipe laying is like creating a downhill slide for water, ensuring it moves effortlessly from one point to another.
Jointing Techniques
Jointing techniques ensure a watertight connection between pipes. Common methods include solvent welding for PVC pipes, gasketed joints for cast iron, and compression fittings for ABS. Proper jointing is critical to prevent leaks and maintain system integrity.
Example: Solvent welding involves applying a chemical adhesive to the pipe and fitting, creating a strong bond.
Analogy: Jointing techniques are like creating a strong bond between two pieces of wood, ensuring a secure and durable connection.
Testing and Inspection
Testing and inspection are essential to verify the integrity of the installation. Conduct a water test to check for leaks and ensure proper flow. Inspect all joints, fittings, and supports to ensure they are secure and functioning correctly.
Example: Filling the drainage system with water and observing for any leaks or pressure drops.
Analogy: Testing and inspection are like a final quality check before launching a product, ensuring everything works as intended before putting it into full use.
Backfilling and Restoration
Backfilling involves filling the trenches with soil after the pipes are laid and tested. Proper backfilling ensures the pipes are securely covered and protected. Restoration includes re-grading the site and restoring any landscaping or structures disturbed during installation.
Example: Filling the trenches with soil and compacting it to secure the pipes, then restoring the lawn and garden to their original state.
Analogy: Backfilling and restoration are like putting the stage back in order after a performance, ensuring everything is neat and tidy.