well-graded, clean gravels; gravel-sand mixes correct answers GW
Poorly graded clean gravels; gravel-sand mixes correct answers GP
silty gravels; poorly graded gravel-sand mixes correct answers GM
Clayey gravels; poorly graded gravel-and-clay mixes correct answers GC
well graded clean sands; gravel-sand mixes correct answers SW
poorly graded clean sand; sand-gravel mixes correct answers SP
Silty sands; poorly graded sand-silt mixes correct answers SM
Sand-silt clay mix with plastic fines correct answers SM-SC
Clayey sands; poorly graded sand-clay mixes correct answers SC
Inorganic silts and clayey silts correct answers ML
Mixture of inorganic silt and clay correct answers ML-CL
Inorganic clays of low to medium plasticity correct answers CL
Organic silts and silt clay, low plasticity correct answers OL
inorganic clayey silts, elastic silts correct answers MH
Inorganic clays of high plasticity correct answers CH
organic clays and silt clays correct answers OH
Types of slope stability correct answers 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? correct answers Sub- drainage, decreases the saturation of the slope
when a slope begins at vertical cut what is done to stabilize the slope? correct answers 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? correct answers low bearing capacity
settlement
existing uncontrolled fill
slope stability
dangerous seismic conditions
frost heave
constructabilty- piers or piles
proposed significate cut or fill
groundwater problems
foundation red lights correct answers 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
underfloor crawl space not vented or drained
when should concrete be placed? and what raises red flags in the design? correct answers within
90 minutes of adding water at the concrete plant
excessive water should not be added at the site, no more the 5 gallons per truck
if air temperatures are higher then 90 degrees and the humidity is less then 25 percent , concrete
may suffer drying shrinkage cracking
concrete should not be placed if air temperatures are 40 degrees and falling unless special cold
weather measures are placed
foundation grades and drainage must dos correct answers surface water must be directed away
from the foundation area and not be permitted to stand within or adjacent to the work