Borrow Soil Volume Calculations 2

[pelelo]

Engineers,

I am working on computing the Borrow soil volumes for a project.

After reviewing several references for computing the Borrow soil volume from borrow X to the project site, i noticed that authors use different approaches.

I noticed that some references use only Dry density (Density of solids, gamma dry) and based on that they compute the borrow soil o transportation volume. Others, instead, use the Moist density (Solids + Water, Gamma Moist) in other to compute the borrow soil volume.

To me, it makes more sense to consider the moist density because both soils (solids) and water do weight.

Does anyone know a good reference that can provide explanations/examples about these borrow soil problems?

On other note, Michael Linderburg, in his CERM Practice problem manual (I don't know if the problem provides all the necessary information), there is a similar problem like this. However, in the same problem, i noticed he computes the total borrow soil volume (transport volume) in one case using "V solids + V voids = Vt", which makes sense to me, and in the same problem, for part b, he computes the total borrow soil volume based on Volume of solids (Vs) only. Has anyone realized this?

Thanks.

 

[PEinc]

Always check or ask around to see if there is an errata (not erotic) supplement to books like Linderburg's.

http://www.PeirceEngineering.com

 

[pelelo]

Thanks.

Do you by chance know another reference that you understand is trustable to consult this type of problems?

 

[GeoEnvGuy]

To determine the volume you need a 3d geometry into autocad. To determine how much that means you want to correct the volume of the in situ density of the borrow source to the standard proctor density which it will be placed.

 

[PEinc]

My earthwork reference books are very old. I'm sure that there are many new books available. Search for "estimating earthwork." A book will have topics like those shown in the following, example link. Please note that I do not have the linked book and am not saying that it is the best for your use. It may show some of the topics with which you want to become more familiar.

https://www.craftsman-book.com/media/static/previews/estimating_excavation_revised_book_preview.pdf

http://www.PeirceEngineering.com

 

[BUGGAR]

Do they still call it "fluff"?

 

[fattdad]

if the fill is in situ and found at 125 pcf with a moisture content of 12 percent, you'd have a dry density of 112 pcf. If 112 pcf represents 95% compaction (you'd have a proctor), then the volume of cut would be the same as the volume in fill.

If the contractor delivers 10 cy of fill (as measured in the truck), it's more likely that you'll find a 15 percent shrinkage factor.

f-d

ípapß gordo ainÆt no madre flaca!