Building Science Foundations

Joseph Lstiburek, Ph.D., P.Eng, ASHRAE Fellow

presented by www.buildingscience.com

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• Liquid Gravitational Hydrostatic PressureCapillary Suction PressureOsmosis Solute Concentration

• Vapor Diffusion Vapor PressureConvective Air Pressure

Mechanisms of Flow

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Calculating capillary rise

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Capillary rise versus diameter

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0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

diameter [inch]

capi

llary

rise

[inc

h]

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Capillary FlowSiding laps

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