Unit weight of Soil 2

[deancdn]

I'm not familiar with earth science, but could someone help me out with this questions. I need to know the unit weight of soil based on the description of the soil composition. Specifically, a value expressed in lbs/ft^3 for two soil descriptions:

1) Loose to medium dense sands and gravel; soft clays and silt
2) Dense to very dense sand and gravel.

A "ballpark" value will be sufficient or maybe point me to references that I can get accessed to them easily. Any help would greatly be appreciated.

Many Thanks.

Dean

 

[SlideRuleEra]

Dean - Go to my web site (link below) and download "US Steel Sheet Piling Design Extracts". Look in Table 6.

Best Wishes

http://www.SlideRuleEra.net

 

[PEinc]

Try looking at NAVFAC Design Manual DM-7, Page 7.2-39. It has some unit weights for various soils.

http://www.vulcanhammer.net/download/dm7_02.pdf

 

[mitchell54]

1) IF dry 2320 lbs/cu-ft If wet 2600 lbs/cu-ft
2) If dry 2500 lbs/cu-ft If wet 2700 lbs/cu-ft

 

[RWF7437]

mitchell54

Don't you mean pounds per cubic yard, NOT per cubic foot !?

If so your weights sound pretty light.

Of course, one could always go out, get a box full of the soil and weigh it. But that would mean leaving the office and missing all those important phone calls and emails.

good luck

 

[RCEJD]

Use a value of 100 to 115 pcf or so for clays and silts...

and,

120 to 130 pcf for sand and gravel

 

[RWF7437]

Correction:

Your weights sound pretty HEAVY !

Your soil is about 40 times the weight of water ( 62.4 lbs/cu ft ) Lead weighs about 13 times as much as water.

good luck looking up answers in books

 

[PEinc]

Again,

Try looking at NAVFAC Design Manual DM-7, Page 7.2-39. It has some unit weights for various soils.

http://www.vulcanhammer.net/download/dm7_02.pdf