Joceil.infante at 03:29, 12 September 2017

2017-09-12T03:29:51Z

Joceil.infante: Created page with "At the design flow rate: *In accordance to BS 8490:2007, the minimum flow velocity in tailpipes, or sections of horizontal pipe longer than 1m, should be 1.0 m/s, in order to..."

2017-09-12T03:24:19Z

Created page with "At the design flow rate: *In accordance to BS 8490:2007, the minimum flow velocity in tailpipes, or sections of horizontal pipe longer than 1m, should be 1.0 m/s, in order to..."

New page

At the design flow rate:
*In accordance to BS 8490:2007, the minimum flow velocity in tailpipes, or sections of horizontal pipe longer than 1m, should be 1.0 m/s, in order to aid the removal of air during priming and prevent the build-up of sediment or other debris in the pipes;
The minimum flow velocity in downpipes should be 2.2 m/s, in order to promote efficient priming.
*In accordance to ASPE ANSI-45 Standard;
A fully primed flow (i.e., full-bore flow), the velocity in the stack shall be greater than 2.2 m/s for stack 150 mm and smaller. For pipes larger than 150 mm, refer to appropriate testing data from drain manufacturers. Minimum velocity is a function of pipe diameter.

== References ==
#BS 8490:2007 Guide to siphonic roof drainage system (p.9 Clause 6.4)
#ASPE ANSI-45 (clause 7.7.5.4)

@@ Line 1: / Line 1: @@
 At the design flow rate:
-*In accordance to BS 8490:2007, the minimum flow velocity in tailpipes, or sections of horizontal pipe longer than 1m, should be 1.0 m/s, in order to aid the removal of air during priming and prevent the build-up of sediment or other debris in the pipes;
+*In accordance to BS 8490:2007, the '''''minimum flow velocity in tailpipes, or sections of horizontal pipe longer than 1m, should be 1.0 m/s''''', in order to aid the removal of air during priming and prevent the build-up of sediment or other debris in the pipes;The minimum flow velocity in downpipes should be 2.2 m/s, in order to promote efficient priming.
-The minimum flow velocity in downpipes should be 2.2 m/s, in order to promote efficient priming.
+*In accordance to ASPE ANSI-45 Standard,a fully primed flow (i.e., full-bore flow), '''''the velocity in the stack shall be greater than 2.2 m/s for stack 150 mm and smaller'''''. For pipes larger than 150 mm, refer to appropriate testing data from drain manufacturers. Minimum velocity is a function of pipe diameter.
 == References ==
 #BS 8490:2007 Guide to siphonic roof drainage system (p.9 Clause 6.4)
 #ASPE ANSI-45 (clause 7.7.5.4)

Flow Velocity (min.) (Siphonic Roof Drainage System) - Revision history

Joceil.infante at 03:29, 12 September 2017

Joceil.infante: Created page with "At the design flow rate: *In accordance to BS 8490:2007, the minimum flow velocity in tailpipes, or sections of horizontal pipe longer than 1m, should be 1.0 m/s, in order to..."