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→Using a permeameter
[[File:Infiltration_Testing_1.jpeg|thumb|Infiltration testing with a Guelph Permeameter at a site in Glen Williams, Ontario]]
[[File:Mariotte Guelph.jpg|thumb|The water level within the well is determined by the height of the air tube within the permeameter, only when bubbles pass can the water drop from the reservoir above.]]
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==Principle==
==Principle==
A variety of field permeameters have been developed locally, and are readily available to purchase or to hire.
A variety of field permeameters have been developed locally, and are readily available to purchase or to hire.
They speed up analysis (somewhat) and add some degree of accuracy to a simple [[percolation test]] by employing the [https://en.wikipedia.org/wiki/Mariotte%27s_bottle Mariotte bottle] principle to maintain a steady water level (fixed head condition) within the test well.
They have relative benefits and limitations in their use, and as they are proprietary devices, they each have manufacturers specific recommendations for their use.
They have relative benefits and limitations in their use, and as they are proprietary devices, they each have manufacturers specific recommendations for their use.
Sampling strategies for their use is found on [[Design infiltration rate]]
Sampling strategies for their use is found on [[Design infiltration rate]].
==Measurements==
==Using a permeameter==
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===Packing list===
===Packing list===
*Permeameter
*Permeameter
The order in which the parts are assembled will be dictated by which connectors can fit through which holes within the connecting plates. It is easiest to connect up the thinnest tubes first.
The order in which the parts are assembled will be dictated by which connectors can fit through which holes within the connecting plates. It is easiest to connect up the thinnest tubes first.
Find a clear flat piece of ground (or a picnic table) and assemble all of the parts horizontally to reduce strain on the connectors.
Find a clear flat piece of ground (or a picnic table) and assemble all of the parts horizontally to reduce strain on the connectors.
[[File:Infiltration_Testing_1.jpeg|thumb|Infiltration testing with a Guelph Permeameter at a site in Glen Williams, Ontario]]
==External links==
==External links==