Environmental Engineering Reference
In-Depth Information
600
600
LAP WELD
BAR 2
LAP WELD
HORIZONTAL BARS
OF F81 MESH
TO BE NEAREST
TO ROCKFILL
LAP WELD
BAR 1
TOE WALL
(a)
300 300 300
GABIONS TO BE TIED TO EACH
OTHER AND TO THE EMBANKMENT
PROTECTIVE MESH AND ANCHOR
BARS WITH 4MM TIE WIRES AT
300 CENTRES.
UPSTREAM FACE OF WINDROW
TRIMMED TO MATCH GABIONS
AND BARS 4 AND 5 ADJUSTED
TO MATCH.
2
1
(b)
Figure 13.31.
Steel mesh reinforcement for Clarrie Hall Dam, (a) Dam detail; (b) crest gabions.
13.8.3
Design of steel reinforcement
The design principles are:
(a) Control ravelling of the rockfill by steel mesh or gabions;
(b) Protect the mesh from damage from floating debris by placing reinforcing bars up and
down slope over the mesh; or construct the slope very steep with gabions so debris
shoots out beyond the mesh/gabions; or cover (in part) with concrete;
