Estimate gravel, sand, and fines content — percentComponents • GMisc

Computes the percentages of gravel (greater than 4.75 mm), sand, and fines (smaller than 0.075 mm) from a grain-size distribution curve.

Usage

percentComponents(sieve = NA, size = NA, percent, metric = T)

Arguments

sieve: Numeric vector of ASTM sieve numbers. Used to derive size when size is NA. Default NA.
size: Numeric vector of particle sizes. Default NA.
percent: Numeric vector of percent passing values (0–100).
metric: Logical. If TRUE (default) size is in millimetres; if FALSE it is in inches.

Value

A named list with components:

pg: Percent gravel.
ps: Percent sand.
pf: Percent fines.

Details

This function is taken from the "geotech" package from James Kaklamanos

See also

Other soil mechanics, classification: Dsize(), USCS(), USCS.coarse.symbol(), USCS.fine.symbol(), grainSize.coefs(), size.from.sieve()

Examples

percentComponents(
  percent = c(0, 10, 40, 70, 90, 100),
  size    = c(0.075, 0.25, 0.6, 2, 4.75, 19)
)
#> $pg
#> [1] 10
#> 
#> $ps
#> [1] 90
#> 
#> $pf
#> [1] 0
#>