0% found this document useful (0 votes)
34 views3 pages

Ultimate Friction

Different soil type Friction

Uploaded by

luke johnson
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
0% found this document useful (0 votes)
34 views3 pages

Ultimate Friction

Different soil type Friction

Uploaded by

luke johnson
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 3

+)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))),

* CCB Application Notes: *


* *
* 1. Character(s) preceded & followed by these symbols (. -) or (+ ,) *
* are super- or subscripted, respectively. *
* EXAMPLES: 42m.3- = 42 cubic meters *
* CO+2, = carbon dioxide *
* *
* 2. All degree symbols have been replaced with the word deg. *
* *
* 3. All plus or minus symbols have been replaced with the symbol +/-. *
* *
* 4. All table note letters and numbers have been enclosed in square *
* brackets in both the table and below the table. *
* *
* 5. Whenever possible, mathematical symbols have been replaced with *
* their proper name and enclosed in square brackets. *
.))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))-
Naval Facilities Engineering Command
200 Stovall Street
Alexandria, Virginia 22332-2300 APPROVED FOR PUBLIC RELEASE

Foundations &
Earth Structures

DESIGN MANUAL 7.02


REVALIDATED BY CHANGE 1 SEPTEMBER 1986
TABLE 1
Ultimate Friction Factors and Adhesion for Dissimilar Materials

+)))))))))))))))))))))))))))))))))))))))))))))))))))))))0))))))))))))))0)))))))))),
* * * Friction *
* * Friction * angle *
* Interface Materials * factor, * [delta] *
* * tan [delta] * degrees *
/)))))))))))))))))))))))))))))))))))))))))))))))))))))))3))))))))))))))3))))))))))1
* Mass concrete on the following foundation materials: * * *
* Clean sound rock.................................. * 0.70 * 35 *
* Clean gravel, gravel-sand mixtures, coarse sand... * 0.55 to 0.60 * 29 to 31 *
* Clean fine to medium sand, silty medium to coarse * * *
* sand, silty or clayey gravel.................... * 0.45 to 0.55 * 24 to 29 *
* Clean fine sand, silty or clayey fine to medium * * *
* sand............................................ * 0.35 to 0.45 * 19 to 24 *
* Fine sandy silt, nonplastic silt.................. * 0.30 to 0.35 * 17 to 19 *
* Very stiff and hard residual or preconsolidated * * *
* clay............................................ * 0.40 to 0.50 * 22 to 26 *
* Medium stiff and stiff clay and silty clay........ * 0.30 to 0.35 * 17 to 19 *
* (Masonry on foundation materials has same friction * * *
* factors.) * * *
* Steel sheet piles against the following soils: * * *
* Clean gravel, gravel-sand mixtures, well-graded * * *
* rock fill with spalls........................... * 0.40 * 22 *
* Clean sand, silty sand-gravel mixture, single size * * *
* hard rock fill.................................. * 0.30 * 17 *
* Silty sand, gravel or sand mixed with silt or clay * 0.25 * 14 *
* Fine sandy silt, nonplastic silt.................. * 0.20 * 11 *
* Formed concrete or concrete sheet piling against the * * *
* following soils: * * *
* Clean gravel, gravel-sand mixture, well-graded * * *
* rock fill with spalls........................... * 0.40 to 0.50 * 22 to 26 *
* Clean sand, silty sand-gravel mixture, single size * * *
* hard rock fill.................................. * 0.30 to 0.40 * 17 to 22 *
* Silty sand, gravel or sand mixed with silt or clay * 0.30 * 17 *
* Fine sandy silt, nonplastic silt.................. * 0.25 * 14 *
* Various structural materials: * * *
* Masonry on masonry, igneous and metamorphic rocks: * * *
* Dressed soft rock on dressed soft rock.......... * 0.70 * 35 *
* Dressed hard rock on dressed soft rock.......... * 0.65 * 33 *
* Dressed hard rock on dressed hard rock.......... * 0.55 * 29 *
* Masonry on wood (cross grain)..................... * 0.50 * 26 *
* Steel on steel at sheet pile interlocks........... * 0.30 * 17 *

/)))))))))))))))))))))))))))))))))))))))))))))))))))))))3))))))))))))))2))))))))))1

* * *

* Interface Materials (Cohesion) * Adhesion c+a, (psf) *

* * *

/)))))))))))))))))))))))))))))))))))))))))))))))))))))))3)))))))))))))))))))))))))1

* Very soft cohesive soil (0 - 250 psf) * 0 - 250 *


* Soft cohesive soil (250 - 500 psf) * 250 - 500 *
* Medium stiff cohesive soil (500 - 1000 psf) * 500 - 750 *
* Stiff cohesive soil (1000 - 2000 psf) * 750 - 950 *
* Very stiff cohesive soil (2000 - 4000 psf) * 950 - 1,300 *
.)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))-

7.2-63 Change 1, September 1986

You might also like