Guide to siphonic roof drainage systems Ingestion-build-63436 QR-Code) and human readable text

QR-Code) and human readable text in a consistent way

manufacturing and verification

both the definitive requirements and the documented items have to be satisfied

NOTE: This standard is intended to be used with BS 5908-2

Guide to siphonic roof drainage systems Ingestion-build-63436 QR-Code) and human readable textBS 8490: 2007 Guide to siphonic roof drainage systems BS 8490 is the British Standard applies to roof drainage systems using circular section pipes that operate under siphonic action. It does not apply to siphonic drainage systems using rectangular or trapezoidal section conduits for water conveyance. It gives information and provides guidance on design parameters, installation, verification and maintenance needs of siphonic roof drainage systems.