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
slope stability
dangerous seismic conditions
frost heave
constructabilty- 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
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? - answer✔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 - answer✔surface water must be directed away from
the foundation area and not be permitted to stand within or adjacent to the work
foundations must have and adequate concrete reveal of 4 to 8 inches before the top of the soil is
encountered
areas around the foundation must slope away to a swale or drainage pipe system that will drain
adequately off site
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