SMALL DAMS PETITS BARRAGES

part (core)
lies in the zone
(Fig. 5.23)
stabilization
part lies in the
zone
(Fig. 5.23)
A DB, CE
AB D, CE
CAB
D, E
CABD E
Homogenous dams 5)
Legend to table:
Dam sealing
part (core)
Dam
stabilization
part
Upstream
1:x 4)
Downstream
1: y
GM, GC, SM quarry stone 1:1,75 1:1,15
SC, GC, MG GW, SW 1:2,8 1) 1:1,75
ML-MI, CL-CI GP, SP 1:3 1) 1:1,75
GM, SM quarry stone 1:3 1,15
GC, SC, MG
CG, MS, CS
GW, SW 1:1,32 1:1,5
ML-MI, CL-CI GP,SP 1:3,4 1:1,75
GM, GC, SM,
SC, MG, CG
MS, CS
quarry stone
GW, GP
as like as at a
core position
1:2,0 2)
ML-MI, CL-CI SW, SP in the zone AB 1:2,2 3)
as like as at
homogenous
dams
as like as at a
core position
in the zone
CAB
GM, SM 1:3 1:2
GC, SC 1:3,4 1:2
MG, CG, MS, CS 1:3,3 1:2
MKL-MI, CL-CI 1:3,7 1:2,2
1) At a very permeable material, possibly with respect to the velocity of the level drop, it can be
increased up to 1:2,25.
2) If the dam subsoil contains a material with a shear strength of min. tgΦsf = 0,74, it is possible to
increase to 1:18
3) If in the dam subsoil contains a material with a shear strength of min. tgΦsf = 0,74, it is possible to
increase to 1:2
4) The stated decline for the upstream face will be used under the highest water level kept in the long
term, above this level the slope may be carried out with a decline 1:(x-0,5).
5) At dams with the height up to 4 m, the decline of the upstream slope may be increased to 1:(x-0,5).
91