DD Form 1206. Grain-Size Analysis (Sieve Method)

DD Form 1206 - Grain-Size Analysis (Sieve Method) is used to document the particle size distribution of soil using the sieve method. This information is vital for soil classification and engineering applications.

The form consists of sections where users can record information about the soil sample, sieve sizes used, weight of soil retained on each sieve, and cumulative weight. It also includes space for calculating and plotting the grain-size distribution curve.

Important fields in this form include the sieve sizes, weights of soil retained, and cumulative weight. Accurate measurements are essential for accurate grain-size analysis.

Application Example: Geotechnical engineers use DD Form 1206 to perform grain-size analysis, which helps classify soil types and determine their engineering properties.

Related Form: DD Form 1207 is related, as it is used to document the grain size distribution graph (aggregate gradation chart).

Alternative Form: ASTM D6913 is a standard test method used for particle-size distribution (gradation) of soils using sieve analysis.