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When items are packed together, in a container for instance, the spaces or gaps between the items is referred to as voidage. The word voidage is a noun.
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What is excess voidage?
Check BS 12504
What is the difference between voidage and porosity?
"Porosity" can be used to refer to voidage of a granular material. Pporosity could also denote the relative volume of pores, cracks and spaces in the solid body, while voidage deals exclusively with the amount of spaces between particles in relation to the overall volume occupied by the granular material. Porosity is measure of void spaces in a material.voidage means the relative amount of space between materials that are tightly packed ..........
What are the common units of measurement hydrologists use to report permeability?
Allowing passage of water into soil pores.It can be measured by conducting some lab tests like Constant Head method Falling Head method.The formula for finding out the coefficient of permeability is k= [Ql/(i.h.A)] ---- For Constant Head Method k=al/A(t2-t1)* log(h1/h2) ....... For Falling Head Method Where A----- the area of c/s Q----- the discharge i------the hydraulic gradient h------head in m. a------the certain area of c/s. t1& t2----- time intervals h1&h2----- heads at time intervals at t1&t2.
