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2. Geotextile - Wikipedia

   en.wikipedia.org/wiki/Geotextile

   Geotextiles were originally intended to be a substitute for granular soil filters. Geotextiles can also be referred to as filter fabrics.In the 1950s, R.J. Barrett began working using geotextiles behind precast concrete seawalls, under precast concrete erosion control blocks, beneath large stone riprap, and in other erosion control situations. [2]

3. Topsoil - Wikipedia

   en.wikipedia.org/wiki/Topsoil

   Topsoil is composed of mineral particles and organic matter and usually extends to a depth of 5-10 inches (13–25 cm). Together these make a substrate capable of holding water and air which encourages biological activity.

4. Earthbag construction - Wikipedia

   en.wikipedia.org/wiki/Earthbag_construction

   Bags on the course above are offset by 200 mm (8 in)—half of the 450 mm (18 in) wall width—similar to running bond in masonry. Bags can either be pre-filled with material and hoisted up, or bags or tubes are filled in place. The weight of the earthen fill locks the bag in place on the barbed wire below.

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6. Sand - Wikipedia

   en.wikipedia.org/wiki/Sand

   Sand can also refer to a textural class of soil or soil type; i.e., a soil containing more than 85 percent sand-sized particles by mass. [ 2 ] The composition of sand varies, depending on the local rock sources and conditions, but the most common constituent of sand in inland continental settings and non- tropical coastal settings is silica ...

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