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A diagram of a traditional French drain. A French drain [1] (also known by other names including trench drain, blind drain, [1] rubble drain, [1] and rock drain [1]) is a trench filled with gravel or rock, or both, with or without a perforated pipe that redirects surface water and groundwater away from an area.
Quicksand and a warning sign about it at a gravel quarry in England Quicksand on the Thames. Quicksand (also known as sinking sand) is a colloid consisting of fine granular material (such as sand, silt or clay) and water. It forms in saturated loose sand when the sand is suddenly agitated.
Iron plates, being heavy, are generally installed using a crane while plywood and plastic reinforcements are placed by hand. Ground reinforcement grids are installed by preparing a suitable depth of sub base material, overlaid with a screed layer of fine gravel or sharp sand to create a level followed by geotextile membrane before final assembly and in-filling of the final grid surface.
Here’s what to do to get rid of this pesky weed: Meet The Expert. Clint Waltz, PhD, is a turfgrass specialist at the University of Georgia. Know your grass type.
Killing your entire lawn gets rid of everything—grassy and broadleaf weeds, off-type lawn grasses, and the few strands of good grass you have left. Unlike the five percent household vinegar used ...
Here's a handy guide for diagnosing and treating your lawn's post-summer damage.
These provide grass reinforcement, ground stabilization and gravel retention. The 3D structure reinforces infill and transfers vertical loads from the surface, distributing them over a wider area. Selection of the type of cellular grid depends to an extent on the surface material, traffic and loads.
In soils where saturation with water is prolonged and is repeated for many years, unique soil properties usually develop that can be recognized in the field. Soils with these unique properties are called hydric soils, and although they may occupy a relatively small portion of the landscape, they maintain important soil functions in the environment.