tristrium
Structural
- Sep 26, 2010
- 9
Does anyone have any information on the coefficient of friction of a segmental retaining wall with gravel or no fines backfill on the concrete base?
It seems to be general practise to interchange either a concrete or crushed rock base, but I am concerned that the concrete base will provide a lower frictional resistance.
Keystone suggest a value of 205+0.3N (lbs/lf).(effectively a coefficient of 0.3). I have also seen values of 0.8 for concrete on concrete (PCI design handbook). This seems like quite a range.
It seems to be general practise to interchange either a concrete or crushed rock base, but I am concerned that the concrete base will provide a lower frictional resistance.
Keystone suggest a value of 205+0.3N (lbs/lf).(effectively a coefficient of 0.3). I have also seen values of 0.8 for concrete on concrete (PCI design handbook). This seems like quite a range.