Yohannis (E), who blocked the flow with stones that direct the water down the slope. (v). From E to G The water drop moves along the plot boundaries until it drops into a gully (F) that takes it to the river (G). This gully had emerged a year after the diversion in 1998. ...
Linear drainage refers to systems that drain along their entire length, rather than at one particular point, as a gully does. Most are variations on the theme of an enclosed channel, typically with a u-shaped cross-section and some form of grating over the top. There is an enormous range...
Gully scour is to be expected when the Froude number of flow in the channel exceeds that required for stability. Erosion of this type maybe of considerable extent depending upon the location of the stable channel section rela- tive to that of the outlet in both the vertical and downstream ...
Systems; silt and sludge boxes; ventilating.-A casing 14, Fig. 1, having an enlarged portion 15 is connected with a sewer by a shaft 22. Branch drains are connected to sockets 17 opening into a trap 16. Sludge is collected in a box 10 which is spaced from the walls 15 by ribs 19...