What type of soil contains all sizes of material from the No. 4 sieve to the No. 200 sieve?

Well-graded soil is characterized by a distribution of particle sizes that includes a wide range from coarse to fine material, specifically covering all sizes between the No. 4 sieve (which retains particles larger than 4.75 mm) down to the No. 200 sieve (which retains particles smaller than 0.075 mm). This variety of sizes allows for better packing and increased shear strength, making well-graded soil suitable for construction and earthworks, as it tends to have fewer voids and improved drainage properties.

In contrast, uniformly graded soil consists of particles that are all of similar size, which can lead to poor stability and drainage due to larger voids between particles. Gaps graded soil, on the other hand, intentionally omits certain particle sizes, creating "gaps" in the gradation, resulting in less efficient packing. Fine-grained soil primarily consists of particles that pass through the No. 200 sieve, lacking the broader size distribution that well-graded soil provides.