Accession Number:

AD0628868

Title:

A LOGNORMAL SIZE DISTRIBUTION MODEL FOR ESTIMATING STABILITY OF BEACH FILL MATERIAL.

Descriptive Note:

Technical memo.,

Corporate Author:

NORTHWESTERN UNIV EVANSTON ILL

Personal Author(s):

Report Date:

1965-11-01

Pagination or Media Count:

21.0

Abstract:

An analytical approach to the problem of estimating the extra amount of beach fill needed when available borrow material is finer than native sand composing the beach area is discussed. A mathematical solution is offered for those cases where borrow material is less well-sorted than native beach material. If fill is better sorted, it is shown that there is no direct mathematical solution and required fill quantities must be based on past experience and empirical procedures. Mathematical theory underlying the method of analysis is based on a simple model assuming lognormalcy of particle size distributions. A critical ratio of amount of borrow material needed to produce the size distribution of the native sand is defined such that when the ratio has a maximum, the problem can be solved. Author

Subject Categories:

  • Physical and Dynamic Oceanography
  • Soil Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE