Bulk density question

Fragment of a discussion from Course talk:APBI200

Hi Maja,

Thanks. My understanding now is that for bulk density, when you use the core method, you include coarse fragments, whereas when you use the excavation method, you don't, either for mass or volume. Does this seem reasonable?

AmyMays (talk)22:31, 6 February 2020

No. The core method would generally be used in cases where you have limited to no coarse fragments. The excavation method is used when you have significant coarse fragments. Please see the section in Brady on soil density if you are unsure of the concept.

Amy, as you are a graduate student, you may wish to consult a standard reference manual (e.g. Carter) HOWEVER this level of detail is well beyond this introductory soil science course.

SandraBrown (talk)01:25, 7 February 2020

Hi Sandra,

Thanks. From your response on the '2 concepts' thread, it sounds, for the excavation method, like coarse fragments are sieved out and disincluded for both Ms and Vt values. For the core method, Maja said that coarse fragments would be included in both Ms and Vt. Do you agree?

AmyMays (talk)04:32, 7 February 2020