трапецан ус халиагуур
Cipoletti weir
The Cipolletti weir is trapezoidal in shape. The slope of the sides, inclined outwardly from the crest, should be one horizontal to four vertical. The selected length of notch (L) should be at least 3H and preferably 4H or longer. Cipoletti weirs are considered fully contracted.
Source http://ecoursesonline.iasri.res.in/Зураг
