Rain Bird ESP-SMT Installation & Operation Manual

Contents

Rain Bird ESP-SMT Installation & Operation Manual Manual pdf 78 page image

ESP-SMT Smart Modular Control System73Description Of Each Soil TypeSand• Loose and single grained. Each grain of sand can be easilyseen and has a gritty feel.• Squeezed when dry, sands cannot form a cast and willreadily fall apart when released.• Squeezed when moist, soil will form a very weak cast thatwill crumble if touched.Loamy Sand• Resembles sand as it is loose and single grained. Mostindividual grains can be seen. Feel is not as gritty as sand.• Squeezed when dry, soil forms a slight cast that readily fallsapart when hand releases soil.• Squeezed when moist, soil is slightly cohesive. Fragile castcan be formed more than with sand.Sandy Loam• Some individual sand grains can be seen and felt.• Enough silt and/or clay soil particles to provide soilcohesion when moist.• When dry, casts can be formed that will not break withcareful handling.Loam Soil• Medium textured soil. Mixture of sand, silt and clay withnone dominant.• When dry, soil can form a cast that can be handled freely.• Squeezed moist, soil is fairly smooth and plastic with agritty feel.Clay Loam• Fine textured soil. Even distribution of sand, silt and clay.Soil feels like it has more clay than sand or silt.• Forms clods that are firm when moist and hard when dry.• When the moist soil is squeezed between the thumb andforefinger it forms a thin ribbon that will barely sustain it’sown weight.Silty Clay• Soil has a moderate amount of fine grains of sand and clayparticles. Medium sized particles represent less than 50%of all soil particles.• When dry, soil forms very hard clods that can be broken.• When moist, a moderate size ribbon can be formed thatwill support it’s own weight.Clay Soil• Very fine textured soil.• When dry, forms very hard lumps that are hard to break up.• When moist, soil is extremely sticky and plastic.• Squeezed soil will form a thin, long flexible ribbon that willnot break easily.