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Waste systems with ventilation branches (part 3)

Waste systems with ventilation branches (part 3)

From: The Technical Manual for Waste Systems by Valsir

In the third part of this series on waste systems with ventilation branches, we look at sizing examples and how to calculate the total flow for each sanitary fixture. In waste systems with ventilation branches, it is extremely important to calculate the total flow for each sanitary fixture that drains into the ventilation fitting connections, so that you know what size ventilation fittings to make use of.

Read more: Waste systems with ventilation branches (part 3)

Copper soldering – The dos and don’ts (Part 6)

Because an open flame and high temperature are required for soldering, safety precautions must be observed.

Each month, the Copper Development Association Africa (CDAA) brings you more insight into the dos and don’ts of copper soldering.

Read more: Copper soldering – The dos and don’ts (Part 6)

Step by step: Water meters

Water meters are water-measuring devices used to keep track of the amount of water used in domestic and commercial buildings.

By Kelly-Ann Prinsloo

South Africa’s water crisis is not going away, but there are ways to curb its effects. One of those ways is the humble water meter.

Read more: Step by step: Water meters

Thermal resistance of pipes and insulation

By: Dewald Burzynski – Serbco SA (PPr piping solutions)


How much energy do domestic hot water systems use and how can we prevent this loss? Energy efficiency is on everyone’s lips but how much energy is lost through a domestic hot water system? How do we prevent this and how do we make it cost efficient too? The obvious answer is by insulating the distribution and storage system. But how do we do this effectively so that we do not waste resources and money that may not be recouped?

Read more: Thermal resistance of pipes and insulation

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