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Assembly of Field Rolled Fiber Roll M Roll length of erosion control blanket into a tube of minimum 200 mm (8 in) diameter. ■ Bind roll at each end and every 1.2 m (4 ft) along length of roll with jute-type twine. Installation ■ Slope inclination of 1:4 or flatter: fiber rolls shall be placed on slopes 6.0 m apart. ■ Slope inclination of 1:4 to 1:2: fiber rolls shall be placed on slopes 4.5 m apart. • Slope inclination 1:2 or greater: fiber rolls shall be placed on slopes 3.0 m apart. w Stake fiber rolls into a 50 to 100 mm (2 to 4 in)trench. rr Drive stakes at the end of each fiber roll and spaced 600 mm (2 ft) apart if Type 2 installation is used (refer to Page 4). Otherwise, space stakes 1.2 m (4 ft) maximum on center if installed as shown on Pages 5 and 6. ■ Use wood stakes with a nominal classification of 19 by 19 mm (3/4 by 3/4 in), and minimum length of 600 mm (24 in). ■ If more than one fiber roll is placed in a row, the rolls shall be overlapped; not abutted. Removal w Fiber rolls are typically left in place. a If fiber rolls are removed, collect and dispose of sediment accumulation, and fill and compact holes, trenches, depressions or any other ground disturbance to blend with adjacent ground. Maintenance and ■ Repair or replace split, torn, un r v ' o Inspection lnspAh e n s r rt m enan as needed or as rE.■ insplowing rainfall events and a least daily during prolonged rainfall. Perform maintenance as needed or as required by the RE. n Maintain fiber rolls to provide an adequate sediment holding capacity. Sediment shall be removed when the sediment accumulation reaches three quarters (3/4) of the barrier height. Removed sediment shall be incorporated in the project at locations designated by the RE or disposed of outside the highway right-of-way in conformance with the Standard Specifications. Page 4 of 4