concrete pavement on slope

huangyhg

concrete pavement on slope
hi guys,
i have a concrete pavement on a 1:3 grade and i'm a little concerned about the slab sliding, similiar to a retaining wall sliding due to active earth pressure.
has anyone designed a concrete pavement on such a steep slope and did they use any general design principles such as providing a shear key or other form of mechanical resistance.
also, is this sliding the only failure mechanism that can be developed or should i be looking at a global failure surface as well.
the slab is a residential driveway but i have been requested to make allowances for heavy traffic.
if anyone can point me towards any reference material than that would be greatly appreciated.
check out our whitepaper library.
that is a heck of a slope for a driveway - some people would have trouble walking up it.  any way to re-grade??
check sliding stability, you may need keys or positive tie-offs (soil nailing?). you can find design examples from foundation text books, or visit uscoe (corp of engineers) website.
an 18.4% slope is stable as to sliding concrete on soil/granular base, however, check the stability of the slope with respect to the soil.  use tine texture parallel to topo line for tire friction when raining.
a 1:3 slope is 18.4 degrees, or 33%.

try
thanks guys,
the slope is 1:4, i wanted to dramatize this in the hope of recieving a wider response.
i've done some statical equilibrium numbers to satisfy myself this pavement won't slide because of the friction at the concrete-soil interface.  i haven't had much experience with pavement design so i wanted to know what are the commonly used techniques when constructing pavements on steep grades.
i'll research into soil nailing, slope stability, re-grading and texturing the wearing surface.
thanks all for your replies.