Declivity; the descent of land or a hill; a slope.
Descent of water; a cascade; a cataract; a rush of water down a precipice or steep; -- usually in the plural, sometimes in the singular; as, the falls of Niagara.
Extent of descent; the distance which anything falls; as, the water of a stream has a fall of five feet.
A section of the curling sheet that is sloped, which can cause a moving stone to curl in the opposite direction than intended.
The slope of the roof or gutter, often expressed in degrees, or as a ratio of vertical height to horizontal distance (e.g. 1 in 20).
A downward slope.
A downward and onward movement in the air under the force of gravity after forward momentum carries an object beyond its supporting surface, rotation during a fall is gradual and the object usually lands right side up.
The fastest form of mass movement, occurring when rock or sediment breaks off from a steep or vertical slope and descends at a rate of 9.8 meters per second. A fall can be extremely dangerous.
a movement downward; "the rise and fall of the tides"
slope downward; "The hills around here fall towards the ocean"
slope. The degree to which a paved surface is angled to aid in the drainage of water.
the downward motion of rock or soil through the air or along the surface of a steep slope.
Used to express the slope at which drain lines are installed to ensure proper waste drainage. Minimum fall per foot is 1/4 inch, or whatever is set by your local building codes. Home Improvement Encyclopedia
(Water Pump/Hydro Sections)- The vertical descent of water, usually measured in vertical feet. Also called "head".
1. The slope of land. 2. The amount of slope given to horizontal runs of pipe to provide gravity flow in the line.
The amount of slope or slant per horizontal foot of a drain pipe or surface.