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Module Lessons
Advanced Sanitation & Rainwater Systems
Sanitation Legislation: Parts F, G & H
BS EN 12056 & European Drainage System Types
Primary Ventilated Stack Systems
Air Admittance Valves (AAVs)
Off-Grid Drainage: Cesspools & Septic Tanks
Off-Grid Drainage: Reed Beds
Branch Pipework Design Rules
Macerators: Installation & Operation
Waste Water Lifting Stations
AAV Spacing & Fire Stop Requirements
Calculating Discharge Stack Sizes
Designing Rainwater Systems
Calculating Gutter Sizes
Air Testing Sanitation Systems
Maintaining Macerators & Lifters
Diagnosing Sanitation & Rainwater Faults
Lesson Overview
This guide covers the design and installation rules for Air Admittance Valves (AAVs) in single and multi-dwelling drainage networks, alongside statutory fire stopping and intumescent collar requirements.
Learning Objectives
Identify the sizing, height, and siting limitations for air admittance valves under BS EN 12380.
Calculate the required atmospheric venting frequencies for multi-dwelling and housing estate drainage systems.
Explain the operation, pre-installation checks, and Building Regulations requirements for intumescent fire collars.
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