DHARM
N-GEO\OBJ.PM5 898898 GEOTECHNICAL ENGINEERING
- decreases, increases
- False (increases both)
- (d)
- False (True only for horizontal backfill sur-
face) - Hc = 4c/γ
- Passive earth resistance; underestimates
- δ = (2/3)φ
- True
- False (can be negative under certain condi-
tions) - Logarithmic spiral
- True
- False
- False
- Trial wedge
- True
- False
- Culmann’s
- Culmann’s graphical
- hc =^2 c N
γ φ
[Nφ = tan^2 (45° + φ/2)]- True
- False
- True
- One sixth of the base width
- twice the average stress.
- True
- True
- Rankine’s
- Coulomb’s
- Rankine’s
- Footing
- Ground surface
- (i) shear failure
(ii) settlement - True
- Presumptive
- Circular (cylindrical)
- Prandtl, L.
- the angle of internal friction of the soil.
- (c)
- c′ = (2/3)c; tan φ′ = (2/3) tan φ
- 1.3
- (a)
- True
- 0.6
- 0.8
- (d)
- False
- dense, friction angle and hence greater bear-
ing capacity factors - Net ultimate; circular, square, rectangular
and strip. - True
- True
- False
- Plate load
- Cohesionless
- True
- density index and friction angle
- Settlement
- Deep
- floating
- Raft
- service
- eccentric loads or moments
- strap, combined
- raft
- the pressure per unit penetration
- varies linearly
- is constant.
- point-bearing, friction
- wood, steel, concrete
- Hiley’s
- efficiency
- Engineering News
- Loose sand or silt
- False
- Thixotropy
- True
- Cyclic load
- Negative skin friction
- Three