Topsoil
Defined in the standard specifications of 3 state transportation agencies. Each definition below is the agency’s own text, with the section it comes from — they do not all say the same thing, and on a contract the difference is the point.
Definitions are quoted from state-authored public specification books. This page carries no I-Code-derived terms.
Surface soil suitable for seed germination a nd the support of vegetative growth.
Section 101 — GENERAL, ABBREVIATIONS, AND DEFINITIONS →The surface layer of soil and sod encountered during construction.
Section 101 — DEFINITIONS AND TERMS →The uppermost original layer of material that will support plant life and contains more than 5 percent organic material reasonably free from roots exceeding 1 inch in diameter, brush, stones larger than 3 inches in the largest dimension, and toxic contaminants. Traveled way. The portion of the roadway for the movement of vehicles, not including shoulders. –U– Unsuitable Material. Any material which contains more than 5 percent by weight organic matter, or which has unstable bearing capacity, excessive moisture content, plasticity indexes or liquid indexes, 101.02
Section 101 — Definitions of Abbreviations,Acronyms, and Terms →