160mm Pipe
(2 Products)160mm Underground Drainage Pipes provide a high-capacity solution for the disposal of foul water and surface water in domestic and commercial infrastructure.
Engineering & Specification Requirements
Specifying 160mm piping is a technical necessity for drainage runs where the expected flow volume exceeds the capacity of standard 110mm systems. The larger bore is designed to transport significant quantities of waste or storm water without the risk of surcharging. The 160mm dimension refers to the outside diameter (OD), and the pipe features a thicker wall section to provide the higher ring stiffness needed for deeper burial depths or installation under areas subject to heavy vehicular traffic.
The utility of 160mm underground pipes lies in their role as a primary artery within a drainage network. In accordance with Building Regulations Part H, these pipes are often required for the main horizontal runs of a private sewer before it connects to the public network. Their design focuses on maintaining hydraulic efficiency; the smooth internal bore reduces friction, ensuring that even at flatter gradients, the pipe remains self-cleansing and resistant to the accumulation of silt or debris.
Application & Format Selection
- Main Collector Drains: 160mm terracotta PVCu pipes used to aggregate waste from several 110mm soil stacks in multi-occupancy buildings.
- Commercial Stormwater: 160mm systems utilised to carry large volumes of rainwater from expansive roof areas or car park gullies to soakaways or attenuation tanks.
- Adoptable Sewers: 160mm piping specified for sections of the drainage network that are intended for future adoption by local water authorities.
- Heavy-Load Crossings: 160mm pipes with higher SDR (Standard Dimension Ratio) ratings for use under shared driveways or access roads.
Frequently Asked 160mm Pipe Questions
When should I use 160mm pipe instead of 110mm?
160mm pipe is generally required when the number of discharge units (toilets, sinks, etc.) exceeds the capacity of a 110mm pipe, or when you are collecting rainwater from a very large roof area. It is also the standard size for the "main" run that collects waste from multiple 110mm branch lines in a development.
What size hole do I need to core into a manhole for 160mm pipe?
You should core a hole approximately 180mm to 200mm in diameter to allow for the pipe and a flexible "boot" or sand-strip connector, which ensures a watertight seal into the concrete structure.
How do I chamfer a 160mm pipe for joining?
Due to the thicker wall of 160mm pipe, a robust chamfering tool or a coarse file is needed to create a 15-degree lead-in. Failing to chamfer this size pipe almost always results in the rubber seal being dislodged or damaged during insertion.
