When you have a look at the tire of the car, you will notice that the numbers are written in the following pattern: P215/50R17. What is the Meaning of the First Letter? The first alphabet on the tire can be P, LT, ST or T. Sometimes there is the absence of the first alphabet. The first alphabet denotes:
Clay is one of the three principal types of soil, the other two being sand and loam. A certain amount of clay is a desirable constituent of soil, since it binds other kinds of particles together and makes the whole retentive of water. Excessively clayey soils, however, are exceedingly difficult to cultivate.
Composition. Soil is composed of three types of particles: sand, silt and clay. Sand makes up most of soil, and does not have terrific water holding capabilities. The clay particles in soil are very small and do no allow much water to drain.Silt is the second largest component of soil with characteristics of both sand and clay.ypes. There are three types of loamy soil; each is determined by its composition. Light loamy soil consists of more sand than clay or silt. Medium loamy soil is the most sought after because it contains equal amounts of each component.