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� <br /> � <br /> � <br /> G3IGROUP <br /> � <br /> POLYURETHANE SUBSURFACE INJECTION SPECIFICATIONS <br /> �, <br /> 1.0 Description <br /> i <br /> This work shall consist of fumishing and injecting a two component free rise, expansive,thermoset polyurethane material. The <br /> injection shall be performed to fill potential voids and to enhance the soil mass matrix under the structure and slabs as directed by <br /> the Engineer. i <br /> 2.0 Scope of Work i <br /> The grouting Contractor shall provide project control, supervision, labor, materials, and equipment to accomplish the followiing <br /> items: <br /> i <br /> 2.1 Ensure that the Sunshine One-Call Utility Locating System has been contacted and the �, <br /> site utilities have been identified. ' <br /> 2.2 Probe all injection point areas using a pointed tip probe rod,with a maximum I� <br /> diameter of%z"(Preferably a hand cone penetrometer to measure relative , � <br /> densities),to determine the vertical extent of loose soils and/or voids relative � <br /> to the site. �, <br /> 2.3 Install and if feasible,remove injection pipes,as necessary. I <br /> 2.4 Inject polyurethane material at the required depths and volume under the <br /> supervision of the project engineer,or his representative. <br /> 2.5 Monitor for movement of the structure or ground surface during the injection <br /> process. <br /> 2.6 Site clean-up during and after injection. <br /> 3.0 Equipment Requirements , <br /> 3.1 A mobile pumping unit capable of injecting the high-density polyurethane <br /> material into the soils and/or beneath the structure to the depths required shall ' <br /> be used.The pumping unit shall be capable of controlling the rate of flow of <br /> material as required to place the polyurethane,fill voids,and to raise <br /> foundation elements in a controlled manner.The unit shall be equipped with a <br /> manufacturer's certified flow meter to measure the amount of high-density <br /> polyurethane injected at each location.The certified flow meter shall have a <br /> digital output in both pounds and gallons. <br /> 3.2 Pressure and temperature control devices capable of maintaining proper I <br /> temperature and proportionate mixing of the polyurethane component <br /> materials shall be used. i <br /> 3.3 Pneumatic or electric drills capable of efficiently drilling 5/8"to 3/4" , <br /> Florida Office: Phone: 727.376.7833 Tennessee Office: <br /> 2410 Success Drive, Suite 7 Fax: 727-376-7433 45 Oak Valley Drive <br /> Odessa, FL 33556 Email: David.Harro(a),�eo3�roup.com Spring Hill, TN 37174 <br /> Web: www.�eo3�roup.com � <br />