EngSWMP

                                                                                                                                                                                              Woven or           2000 mm (max) without
                                                                                                                              Fabric                                                          composite                   support wire
                                                                                                                                                                                  Fabric B    sediment
                                                           2m                                                    Post                                                                         fence fabric                     Post
                                                                                                                             Clean
                                                                       Fabric                  Fabric                        sand or                              Post   Post
                                                                         Post                                                aggregate                             B      A                     200 (min)
                                    Final                                                           Back fill
                                            batter
                                                                                                                                                      Fabric A
                                                                                                          200 mm          300 mm
                                                                                                                                           Fabric to fold around each stake one full turn.
                                                                                                                                           Stake B to be drive tightly against Stake A.
                                                                                                           Soil                            The tops of both stakes to be secured with wire.
                                                                                                                                                                                              Sheet flow
                              (a) Location of fence relative to base of slope              (b) Anchoring base of fabric                           (c) Joining fabric - Method 1
                                                                                                                                                                                                 (d) Installation without backing support

                                                       W                                       Fabric                                                                                                           3000 mm (max) with top wire
                                                                                                                                                                                              Woven or                or wire mesh backing
                                                                                                                Straw bale                              Staple/tack              Fabric B     composite
                                                300 mm (min)                                                                                                                                  sediment                          Post
                                                                                                                                                                                              fence fabric
                                                                                                                        Sediment                          Fabric A                                             1 m (max)
                                                                                                                                                                 Safety cap                     200 (min)     secure fabric
                                                                                                                                                                                                                                       Top wire
                                                                                                                                             Support post option 1                                               to wire
                                                                                                                                                                                                                                       support
                                                                                                                                             1500 mm2 hardwood stake
                                                                                                          200 mm
                                                                                                                                                           Support post option 2
                                                                                                                                                           1.5 kg/m steel star picket

                                             (e) Spill-through weir                   (f) Placement of up-slope straw bale                        (g) Joining fabric - Method 2
                                                                                                                                                                                              Sheet flow


                                 3 m (max) with wire backing,            ‘Returns’ placed at 20 m spacing (max) if fence is located                                                                (h) Installation with top wire support
                                                                         along the contour, otherwise 5 to 10 m depending on slope                       Notes:
                                        otherwise 2 m (max)
                                                                                                                                                         1. Sediment fence to be installed along a line of constant ground elevation
                                Direction of flow                                                                            1.5 m (min)
                                                                                                                                                            wherever practical.
                                                                                                                                                         2. Both end of the sediment fence to extend up the slope at least 1m.
                                                                                                                                                         3. Support post to be spaced a maximum 2m unless the fence is supported
                                                                                                                                                            by a top wire or wire mesh backing, in which case 3m maximum spacing.
Catchments & Creeks Pty Ltd




                                                                                                                                                         4. Fence ‘returns’ shall be installed at maximum 20m spacing if fence is
                                                                                                                                                            installed along the contour, otherwise 5 to 10m maximum spacing.
                                                                                                                All support posts placed
                                  Fabric                                                                        down-slope of fabric                     5. Minimum 4 staples or tie wires per stake.
                                  buried                          Sediment fence fabric,                                                                 Drawn:          Date:
                                  200 mm                          not filter cloth or shade cloth     (i) Installation of sediment fence
                                                                                                                                                            GMW           Dec-09 Sediment Fence                                   ESC-04