% Generated by roxygen2: do not edit by hand
% Please edit documentation in R/diagnostics-materials-wrb.R
\name{technic_features}
\alias{technic_features}
\title{Technic features (WRB 2022)}
\usage{
technic_features(
  pedon,
  artefacts_min_pct = 20,
  max_top_cm = 100,
  hardmaterial_min_pct = 95,
  hardmaterial_max_top_cm = 5
)
}
\arguments{
\item{pedon}{A \code{\link{PedonRecord}}.}

\item{artefacts_min_pct}{Minimum artefact percent (default 20).}

\item{max_top_cm}{Maximum top depth (cm) for the artefact and
geomembrane paths (default 100).}

\item{hardmaterial_min_pct}{Minimum hard-material coverage (\%)
for the technic-hard-material path (default 95).}

\item{hardmaterial_max_top_cm}{Surface depth window (cm) for the
technic-hard-material path (default 5).}
}
\value{
A \code{\link{DiagnosticResult}}.
}
\description{
Tests for any of three WRB 2022 alternative qualifying conditions
for Technosols:
\enumerate{
  \item Artefacts >= \code{artefacts_min_pct} (default 20\%) by
        volume within the upper \code{max_top_cm} (default 100 cm).
  \item A continuous geomembrane (\code{geomembrane_present == TRUE})
        within the upper 100 cm.
  \item Technic hard material (concrete, asphalt, mine spoil) with
        \code{technic_hardmaterial_pct >= hardmaterial_min_pct}
        (default 95\%) at the surface (top_cm <=
        \code{hardmaterial_max_top_cm}, default 5).
}
Either path qualifies.
}
\references{
IUSS Working Group WRB (2022), Chapter 5, Technosols.
}
