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Florida Erosion and Sediment Control Inspector's Manual <br /> Gravel and wire mesh drop inlet sediment filter <br /> 1 . Wire mesh shall be laid over the drop inlet so that the wire extends a minimum of <br /> one foot (30 cm) beyond each side of the inlet structure . Hardware cloth or <br /> comparable wire mesh with 1 /2 inch (13 mm) openings shall be used . If more than <br /> one strip of mesh is necessary , the strips shall be overlapped at least 1 ft. (30 cm) . <br /> 2 . FDOT No . 1 Coarse Aggregate (1 .5" to 3 .5" stone)(4 - 9 cm) shall be placed over <br /> the wire mesh as shown on Plate 4.08c. The depth of stone shall be at least 12 ? <br /> inches (30 cm) over the entire inlet opening . The stone shall extend beyond the <br /> inlet opening at least 18 inches (45 cm) on all sides. (See Plate 4 . 08f) <br /> 3 , If the stone filter becomes clogged with sediment so that it no longer adequately <br /> performs its function , the stones must be pulled away from the inlet, cleaned and <br /> replaced . <br /> NOTE: This filtering device has no overflow mechanism. Therefore ; ponding is likely <br /> especially if sediment is not removed regularly. This type of device must never be used <br /> where overflow may endanger an exposed fill slope. Consideration should also be given to <br /> the possible effects of ponding on traffic movement, nearby structures , working areas , <br /> adjacent property, etc. <br /> 18 MIN. GRAVEL� ( 12" MIN . DEPTH) <br /> RUNOFF WATER <br /> WITH SEDIMENT " <br /> - lip <br /> ' P . <br /> -_ — it I <br /> IIQ1111I a` p. III WIRE MESH <br /> SEDIMENT <br /> FILTERED <br /> WATER <br /> S oe^r1ic Aoolieation <br /> This method of inlet protection is 'applicable where heavy concentrated flows are expected, but not where ponding <br /> around the swcturs might cause excessive lncomience or damage to adjacent structures and unprotected areas. <br /> Gravel Shag be VDCT :3, =357, or :5 Coarse Aggregate. <br /> Plate 4.08f Gravel and Wire Mesh Drop Inlet Sediment Filter <br /> Source: Virginia DSWC <br /> 4-40 <br />