Since this is the soil forum and all...
A certain poster, we'll call him 'K', keeps posting this bad information
1) Structure. From that soil sample put enough of the rest to make a 4 inch level in a clear 1 quart jar, with a tight fitting lid. Fill that jar with water and replace the lid, tightly. Shake the jar vigorously and then let it stand for 24 hours. Your soil will settle out according to soil particle size and weight. A good loam will have about 1-3/4 inch (about 45%) of sand on the bottom. about 1 inch (about 25%) of silt next, about 1 inch (25%) of clay above that, and about 1/4 inch (about 5%) of organic matter on the top.
Which according to the practice of SOIL SCIENCE, is completely wrong! The percentage of sand, silt, and clay fractions is know as TEXTURE.
STRUCTURE is the how soil peds aggregate, with a few examples being blocky, columnar, single grain, etc.
Now back to your regularly scheduled program