SOILS CERTIFICATION EXAM QUESTIONS AND ANSWERS % ACCURATE.
well-graded, clean gravels; gravel-sand mixes answer >>GW
Poorly graded clean gravels; gravel-sand mixes answer >>GP
silty gravels; poorly graded gravel-sand mixes answer >>GM
Clayey gravels; poorly graded gravel-and-clay mixes answer >>GC
well graded clean sands; gravel-sand mixes answer >>SW
poorly graded clean sand; sand-gravel mixes answer >>SP
Silty sands; poorly graded sand-silt mixes answer >>SM
Sand-silt clay mix with plastic fines answer >>SM-SC
Clayey sands; poorly graded sand-clay mixes answer >>SC
Inorganic silts and clayey silts answer >>ML
Mixture of inorganic silt and clay answer >>ML-CL
,ICC
Inorganic clays of low to medium plasticity answer >>CL
Organic silts and silt clay, low plasticity answer >>OL
inorganic clayey silts, elastic silts answer >>MH
Inorganic clays of high plasticity answer >>CH
organic clays and silt clays answer >>OH
Types of slope stability answer >>Drainage
slope reduction or flattening
structural solutions
chemical stabilization
what would stabilize a slope that has been effected by seepage water? how does
this improve slope stability? answer >>Sub- drainage, decreases the saturation of
the slope
when a slope begins at vertical cut what is done to stabilize the slope? answer
>>removing the upper portions or head of the slope or landslide is the frequently
employed technic for reducing the driving forces that cause the failure to occur
what are red lights on a site? answer >>low bearing capacity
settlement
existing uncontrolled fill
, ICC
slope stability
dangerous seismic conditions
frost heave
constructability- piers or piles
proposed significate cut or fill
groundwater problems
foundation red lights answer >>design not in accordance with geotechnical
recommendations
foundation location differs from site investigation location
foundation plans not adequate or complete
low bearing capacity not recognized in footing design
compressible or expansive soil on site not anticipated in design
water seepage not anticipated in design
seismic conditions not documented properly in design or calculations
provisions dealing with frost heave not included
retaining structures or basement walls without adequate drainage