A. PILE ENCASEMENTS 1. The Contractor shall review the site and all locations prior to submitting a price proposal. 2. The Contractor shall keep the construction area clean and removal and disposal of material or debris shall be the responsibility of the Contractor. 3. The Contractor shall comply with AASHTO Specifications, manufacture recommendations, or accepted industry standards for any specific items not addressed herein or elsewhere in the Contract Documents. 4. When substituting equal products, systems or procedures obtain approval from the Engineer before use. Submission must be complete and include Supplier name and address, description for the product or system, examples where the product or system has been previously used, and length of time the products or systems have been in use. 5. Prior to the installation of the encasement, unsound concrete shall be removed. The Department’s Engineer shall be contacted immediately if the unsound concrete extends beyond the original level of the prestressing strand or the contract has concern for the overall stability of the structure. 6. Forms for encasements shall be modular PVC or FRP. Forms shall be manufactured for the intent of jacketing piling in coastal environments such as SeaShield Fiber-Form Jackets, SnapJacket, PileForm or similiar. 7. Mortars for filling the encasement shall be as specified by the form manufacturer when a jacketing system is utilized. If not specified, or required, by the form jacket manufacturer; mortar shall be commercially available high strength, non-shrink and intended for coastal applications and capable of displacing water. If redimix concrete is used the concrete shall be class 5000 as defined by the 2007 SCDOT Standard Specifications for Highway Construction with a 10% increase in the cement factor, air entrained, and with a maximum slump of 8 inches. 8. Reinforcing steel shall be as defined by the 2007 SCDOT Standard Specifications for Highway Construction with 3 inches of clear cover to the top and bottom of the encasement and a minimum of 2" clear to the inside face of the encasement. Reinforcing steel shall be of a size consistent with the detail provided herein (Attachment B). 9. The top of the encasement shall the concrete or mortar finished such that a minimum of 1/2" of slope exists to ensure positive drainage away from the pile. 10. Encasements will be measured and paid by the linear foot with the actual length of encasement being rounded down to the half foot. Example: 10'-8" will be paid as 10.5 ft. No encasement shall extend closer than 6" to the concrete pile cap, nor extend more than 2' below the mudline without approval of the Department’s Engineer. 11. Limits and locations (Attachment C & Attachments D1, D2, D3, D4, D5, D6, D7, D8) of encasement shall be as specified herein, or as adjusted for field conditions with the Department's Engineer. 12. For each pile encased, contractor shall complete a separate as-built record sketch included herin (Attachment B).
