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Nomographic Calculation of Linear Extensibility in Soils Containing Coarse Fragments
Author(s) -
Holmgren George G. S.
Publication year - 1968
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1968.03615995003200040040x
Subject(s) - extensibility , volume (thermodynamics) , field (mathematics) , soil water , contraction (grammar) , soil science , mineralogy , mathematics , chemistry , geology , computer science , thermodynamics , physics , biology , pure mathematics , operating system , endocrinology
Linear extensibility is a variable being used by the Soil Survey Laboratories to characterize the expansion‐contraction properties of soil. It is calculated from bulk density data and must be corrected for coarse fragments when they are present in the field. A pair of nomographs is presented to facilitate these calculations. The volume percent of fine‐earth fabric ( F ) is determined from the first nomograph and transposed to the second nomograph where it serves to correct the extensibility as determined on the fine‐earth fabric. The value F may also be used to facilitate conversion of other laboratory data to a field basis where coarse fragments are present.