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// CODE SNIPPET

P2904.6.2.1 Available Pressure Equation

Residential Code 2009 > 29 Water Supply and Distribution > P2904 Dwelling Unit Fire Sprinkler Systems > P2904.6 Pipe Sizing > P2904.6.2 Prescriptive Pipe Sizing Method > P2904.6.2.1 Available Pressure Equation
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The pressure available to offset friction loss in the interior piping system (Pt) shall be determined in accordance with the Equation 29-1.

Pt = Psup — PLsvc — PLm — PLd — PLe — Psp (Equation 29-1)

where:

Pt = Pressure used in applying Tables P2904.6.2(4) through P2904.6.2(9).

Psup = Pressure available from the water supply source.

PLsvc = Pressure loss in the water-service pipe.

PLm = Pressure loss in the water meter.

PLd = Pressure loss from devices other than the water meter.

PLe = Pressure loss associated with changes in elevation.

Psp = Maximum pressure required by a sprinkler.

Related Code Sections


P2904.6.2.1 Water Supply and Distribution, Available Pressure Equation
The pressure available to offset friction loss in the interior piping system ( P t ) shall be determined in accordance with the Equation 29-1 ...
Residential Code 2012 > 29 Water Supply and Distribution > P2904 Dwelling Unit Fire Sprinkler Systems > P2904.6 Pipe Sizing > P2904.6.2 Prescriptive Pipe Sizing Method > P2904.6.2.1 Available Pressure Equation
P2904.6.2.1 Water Supply and Distribution, Available Pressure Equation
The pressure available to offset friction loss in the interior piping system ( P t ) shall be determined in accordance with the Equation 29-1 ...
Residential Code 2018 > 29 Water Supply and Distribution > P2904 Dwelling Unit Fire Sprinkler Systems > P2904.6 Pipe Sizing > P2904.6.2 Prescriptive Pipe Sizing Method > P2904.6.2.1 Available Pressure Equation
P2904.6.2.1 Water Supply and Distribution, Available Pressure Equation
The pressure available to offset friction loss in the interior piping system ( P t ) shall be determined in accordance with the Equation 29-1 ...
Residential Code 2015 > 29 Water Supply and Distribution > P2904 Dwelling Unit Fire Sprinkler Systems > P2904.6 Pipe Sizing > P2904.6.2 Prescriptive Pipe Sizing Method > P2904.6.2.1 Available Pressure Equation
P2904.6.2.1 Water Supply and Distribution, Available Pressure Equation
The pressure available to offset friction loss in the interior piping system ( P t ) shall be determined in accordance with the Equation 29-1 ...
Residential Code 2009 > 29 Water Supply and Distribution > P2904 Dwelling Unit Fire Sprinkler Systems > P2904.6 Pipe Sizing > P2904.6.2 Prescriptive Pipe Sizing Method > P2904.6.2.1 Available Pressure Equation
1609.6.3 Structural Design, Design Equations
of wind pressures on the building envelope in accordance with Equation 16-35. Design wind forces for the MWFRS shall be not less than 16 psf ...
International Building Code 2015 > 16 Structural Design > 1609 Wind Loads > 1609.6 Alternate All-Heights Method > 1609.6.3 Design Equations
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