Specifications include, but are not limited to: 1. The silt fence shall be installed and in good working condition prior to any grading or excavation operations and as needed throughout the construction process. The silt fence installation shall not exceed the amount required for the current construction season.; 2. Silt Fence may be installed in the ground by either of the two methods listed below.; a. Trenching Method; (1) The Contractor shall excavate a trench to the depth, width, and length shown in the contract.; (2) The Contractor shall place the silt fence in the trench and pin it as shown in the contract.; (3) Wire staples shall be used for anchoring the silt fence.; b. Slicing Method; (1) The Contractor shall install silt fence by mechanically slicing the material into the soil.; (2) The Contractor shall compact the soil and attach the fabric to the posts as shown in the contract. The posts shall be driven until firm.; 3. Silt Fence installed in below water conditions. a. Trenching is not required.; b. Fold a 6-inch (150 mm) flap toward the sediment source and pin as shown in the contract. Install the stakes as for a dry installation. Attach the fabric to the posts with zip ties or other approved methods and secure it from slipping down the post. ; High Tension Cable Guard Rail and Fittings a. The cable, fittings, anchor rods, plates, turnbuckles, clevises, and tension spring assemblies shall be hardware as tested to MASH TL-3 by the manufacturer. A list of approved manufacturers is on the Departments Qualified Material Vendors List.; b. The anchors should withstand a dynamic and static load (due to temperature variation) of 31 kips if all cables are connected to a single anchor or 20 kips if the cables are individually anchored. The anchor should not be damaged, and anchor movement should be less than 2 in. under this load.; c. Fitting hardware used to connect the cable ends to the end terminal and/or end anchors should be properly installed to avoid cable pull-out from the connector during impact.; 1. Class 47B Concrete Mix Design Submittal: a. The contractor shall submit the Department’s Concrete Mix Design Worksheet with all relevant tabs completed prior to review by the engineer. The Concrete mix design shall be from a minimum of a 4 cubic yard batch. The Department’s Concrete Mix Design Worksheet can be found on the Materials and Research website.; (1) All testing must be performed by a qualified laboratory found on the Department’s Material and Research website, under the Nebraska Qualified Consultant & LPA Laboratories and submitted to the Engineer.; (2) The Concrete Mix Design shall be submitted to the Engineer 4 weeks prior to any concrete being placed on the project.;; DOWEL BARS 1. A plant supplying coated dowel bars under these Specifications shall meet the Acceptance Requirements as set forth in Section 1021 for Epoxy Coated Reinforcing Steel. A certification by the manufacturer of the coating material and/or the coating applicator is required. a. The certification shall consist of a statement to the effect that the coating material represented conforms to AASHTO M 254 and the requirements in this Section.; b. Three copies of the certification and test results shall be furnished.; c. The coating applicator shall also furnish 3 copies of the mill test showing physical and chemical test results of the steel used in the fabrication of the coated bars.
