547.1 General Description
This Item includes furnishing all labor, materials, equipment, and services necessary to clean and encase steel piles as indicated on the plans. Complete all work according to this specification and to the Engineer’s satisfaction.
547.1.01 Definitions
General Provisions 101 through 150.
547.1.02 Related References
A. Standard Specifications Section 500—Concrete Structures Section 514—Epoxy Coated Steel Reinforcement Section 801—Fine Aggregate B. Referenced Documents ASTM 2262 ASTM C 939 ASTM D 737 ASTM D 1682
547.1.03 Submittals
When substituting equal products or systems for one of the two encasement procedures noted in this specification, obtain approval from the Engineer before use. Submit complete data, including: • Company name and address • Description of the product or system previously used on similar projects and how they were used • List of products and their application • Length of time the products have been in use (at least three years) • Length of time the applicator has been in business
547.2 Materials
A. Fabric for Pile Jacket For encasement systems, use pile jacket fabric that conforms to the following requirements: Requirements for Pile Jacket Material Warp 21 ends per in. (25 mm) 1260 denier Fill Nylon 66 fill -- 20 picks per inch (25 mm) 1840 denier Approximate Weight Dupont Cordura -- 9 oz per sq. yd (305 g/m2) Tensile Strength (ASTM D 1682 grab method at 1 in./min. (25.4 mm/min.) in excess of 400 lbs./in. (70 N per mm) in both warp and fill directions Tearing Strength (Tongue method ASTM 2262)—100 lbs. (445 N) Air Permeability (ASTM D 737) in excess of 100 ft. (30 m) per min. B. Mortar for Pile Encasement Procedure 2 Maintain mortar at a uniform consistency to avoid pumping problems. When using concrete sand, keep mortar consistency in the 12-second to 15-second range through the 3/4 in. (19 mm) orifice of a standard flow cone, as described in ASTM C 939. When using mason’s sand, keep consistency in the 30- to 35- second range through a 1/2 in. (13 mm) orifice. 1. Admixtures When recommended by the manufacturer, use admixtures such as grout super plasticizer, water-reducing agent, or air-entraining agent to improve pumpability or to retard setting time. The Department recommends that a pozzolanic admixture be substituted for up to 30 percent of the cement. 2. Mortar mix for Pile Encasement Procedure 2 Use mortar mix for pile encasement that conforms to the following proportions: Cement 1,130 lbs./yd.³ (670 kg/m³) Sand, Concrete, or Masonry 2,000 lbs./yd.³ (1187 kg/m³) Subsection 801.2.02 Water 565 lbs./yd.³ (335 kg/m³) Water/Cement Ratio 0.50 C. Epoxy- Coated Steel Reinforcement Use epoxy-coated steel reinforcement that conforms to Subsection 514.2, Materials. D. Class A Concrete Deposited in Water Use concrete with a 10 percent increase in cement factor. Ensure that concrete is air entrained according to Section 500, with a maximum slump of 8 in. (200 mm).
547.2.01 Delivery, Storage, and Handling
General Provisions 101 through 150.
547.3 Construction Requirements
General Provisions 101 through 150.
547.3.01 Personnel
General Provisions 101 through 150.
547.3.02 Equipment
General Provisions 101 through 150.
547.3.03 Preparation
A. Cleaning Sandblast piles on existing structures to be encased to remove loose dirt, rust, scale, and other deleterious material from the surface. Rinse thoroughly with clean water. Do not sandblast piles to be used on new construction. Clean new piles with a wire brush to free them of rust or other loose material.
547.3.04 Fabrication
General Provisions 101 through 150.
547.3.05 Construction
A. Encasement To perform encasement, follow the details of Figure 1 (Figure 1 metric) and one of the following procedures: FIGURE 1 FIGURE 1 (METRIC) 3. Procedure 1 Form the pile encasement with class “A” concrete deposited in water and epoxy-coated steel reinforcement. Place the concrete according to Subsection 500.2.01.E, Concrete Handling and Placing, where site construction conditions allow. The Department will not require cofferdams. Concrete may be deposited in water. 4. Procedure 2 Form the pile encasement with a Fabriform Pile Jacket System or an approved equal. Pump mortar into the fabric jacket using two tremie hoses extending to the bottom of the jacket. Withdraw these hoses during pumping so that the lower end remains 1 to 2 ft. (300 to 600 mm) under the rising mortar surface. Pump mortar at a rate to provide a rise of approximately 6 in. (150 mm) per minute. B. Installation After cleaning the pile, place steel reinforcement as shown in Figure 1 (Figure 1 metric). Place spacers, tremie hoses, and fabric jacket or forms according to the specifications or the manufacturer-recommended methods. Fill the encasement with concrete or mortar.
547.3.06 Quality Acceptance
A. Limits of Encasement Ensure that the pile encasement extends from 2 ft. (600 mm) below the existing streambed to the top elevation for pile encasement, as shown on the plans.
547.3.07 Contractor Warranty and Maintenance
General Provisions 101 through 150.
547.4 Measurement
Pile encasement is measured by the linear foot(meter) for each pile size indicated.
547.4.01 Limits
General Provisions 101 through 150.
547.5 Payment
Pile encasements will be paid for at the Contract Price per linear foot (meter) for the pile size indicated, complete in place as specified. This payment will be full compensation for furnishing all materials, tools, labor, equipment, and other items necessary to complete the Work. Payment will be made under: Item No. 547 Pile encasement, ___in.(mm) pile Per linear foot (meter)
547.5.01 Adjustments
General Provisions 101 through 150.
Get an email when 547 changes
Georgia revises spec sections through supplementals and new editions. We check this one every week and email you the day it changes. Free, no account.