Wherever the drainage system is under sunk, we consider the following parameters:

• Noise levels
• Smell
• Maintenance
• Cost

Silent pipes are preferred to control noise level and a MultiTrap to prevent smell issues.

Drawbacks:

• Silent pipes are costlier
• Height riser pasted connection to the trap results in leakage over time
• The Trap seal cap can be removed

 

Superior option developed by Urja

As the client wanted an economic option, we designed an under-sunk drainage system where there’s only one silent pipe for the main header and connected all the type B pipes to it. This solves the noise challenge but also economizes the design. We also added an Ultra-silent MultiTrap with a 50 mm water seal with a fixed cap. And since the HDPE and UPVC connections are not practical in pasting, we proposed O-ring fitted connections for the MultiTrap and SWR pipe.

Advantages:

• Saves cost
• No smell because of added water seal and a fixed cap
• Reduced noise level