From: Sandra Robins (s7robins@earthlink.net)
Date: Wed Mar 30 2005 - 19:46:04 PST
Date: Wed, 30 Mar 2005 19:46:04 -0800 Subject: Re: Permeable material for a streambed model From: Sandra Robins <s7robins@earthlink.net> Message-Id: <684FCFA7-A197-11D9-A166-000A958759F4@earthlink.net>
What about a firm piece of screen or even fencing material that you can
mold with pliers to fit the surface you want, then beneath it a loosely
woven cotton material to hold in the soil?
Sandra Robins
> ----------------------------------------------------------------------
>
> Subject: Permeable material for a streambed model?
> From: "Benjamin Pittenger" <bpittenger@earthtones.com>
> Date: Tue, 29 Mar 2005 11:31:05 -0800
>
> I want to construct a model of a stream and lagoon, with permeable
> material along the stream to indicate the sediment and soils along the
> streambed. However, I want the surface to be rigid. Real soil and
> sand just would not last very long as the model is used and
> transported.
>
> I have seen models like this. They are great for modeling watersheds,
> subterranean flow, migration of non-point pollution, etc. However, I
> am having a bit of trouble finding out what material is used to make
> the permeable surface. The material would need to be molded as the
> model is made, but then be rigid and permeable when dry. In an ideal
> world I am thinking of having sand below the hard surface, with a
> plexiglass wall on the model to show a cross-section of the sediment in
> the streambed.
>
> Come to think of it, I think I have seen similar surfaces on some
> potted plants - small pebbles stuck to each other with some sort of
> adhesive, but permeable. Perhaps I'll try a couple of florists.
>
> But, meanwhile, does anyone have ideas of what materials are used for
> this type of permeable surface, and where I could get it?
>
> Thanks,
> Ben
>
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