Common use of Valid Driving Criteria Clause in Contracts

Valid Driving Criteria. Valid driving criteria is defined as having the required hammer having a hammer set greater than 3 blows per inch and less than 10 blows per inch at the driving resistance for that pile. If WEAP analyses show that the hammer(s) will overstress the pile, modify the driving system or method of operation as required to prevent overstressing the pile. Resubmit the modified pile driving system information and WEAP program output to the Engineer for re-evaluation. Do not begin pile driving operations until the Engineer has approved the qualifications of the personnel, the WEAP program output, and the pile driving system(s). Approval of the pile driving system(s) is also based on satisfactory field trials with dynamic pile testing. Obtain approval from the Engineer for the pile driving system(s) based on satisfactory field performance. If piles require different hammer sizes, the Contractor may elect to drive with more than one size hammer or with a variable energy hammer, provided that the hammer is properly sized and cushioned, will not damage the pile, and will develop the required resistance. For penetration of weak soils by concrete piles, use thick cushions and/or reduced stroke to control tension stresses during driving. Office of Materials and Testing Pile Driving Data Form Contract ID: Structure Name: PI Number: Structure No.: County Pile Driving Contractor: Manufacturer: Hammer Type: Model No. Serial No. Hammer Striker Plate Manufacturers Maximum Rated Energy: (ft-k) Stroke at Maximum Rated Energy: (ft) Range in Operating Energy: to (ft-k) Range in Operating Stroke: to (ft) Ram Weight: (kips) Modifications: Weight: (kips) Diameter: (in) Thickness: (in) Material 1 Material 2 Name: Name: Hammer Cushion Area: (in2) Area: (in2) Thickness/Plate: (in) Thickness/Plate: (in) No. of Plates: No. of Plates: Total Thickness of Hammer Cushion: (in) Helmet Weight including inserts: (kips) Pile Cushion Material: Area: (in2) Thickness/Sheet: (in) No. of Sheets: Total Thickness of Pile Cushion: (in)

Valid Driving Criteria. Valid driving criteria is defined as having the required hammer having a hammer set greater than 3 blows per inch and less than 10 blows per inch at the driving resistance for that pile. If WEAP analyses show that the hammer(s) will overstress the pile, modify the driving system or method of operation as required to prevent overstressing the pile. Resubmit the modified pile driving system information and WEAP program output to the Engineer for re-evaluation. Do not begin pile driving operations until the Engineer has approved the qualifications of the personnel, the WEAP program output, and the pile driving system(s). Approval of the pile driving system(s) is also based on satisfactory field trials with dynamic pile testing. Obtain approval from the Engineer for the pile driving system(s) based on satisfactory field performance. If piles require different hammer sizes, the Contractor may elect to drive with more than one size hammer or with a variable energy hammer, provided that the hammer is properly sized and cushioned, will not damage the pile, and will develop the required resistance. For penetration of weak soils by concrete piles, use thick cushions and/or reduced stroke to control tension stresses during driving. Office of Materials and Testing Revised: February 15, 2016 Pile Driving Data Form Contract ID: Structure Name: PI Number: Structure No.: County Pile Driving Contractor: Manufacturer: Hammer Type: Model No. Serial No. Hammer Striker Plate Manufacturers Maximum Rated Energy: (ft-k) Stroke at Maximum Rated Energy: (ft) Range in Operating Energy: to (ft-k) Range in Operating Stroke: to (ft) Ram Weight: (kips) Modifications: Striker Plate Weight: (kips) Diameter: (in) Thickness: (in) Material 1 Material 2 Name: Name: Hammer Cushion Area: _(in2) Area: (in2) Thickness/Plate: (in) Thickness/Plate: (in) No. of Plates: No. of Plates: Total Thickness of Hammer Cushion: (in) Helmet Weight including inserts: (kips) Pile Cushion Material: Area: (in2) Thickness/Sheet: (in) No. of Sheets: Total Thickness of Pile Cushion: (in) Pile Pile Type: Wall Thickness: (in) Taper: Cross Sectional Area: _(in2) Weight/Meter: Ordered Length: (ft) Driving Resistance: (kips) Description of Splice: _ Driving Shoe/Closure Plate Description: Submitted By: Date: Revised February 15, 2016 DEPARTMENT OF TRANSPORTATION STATE OF GEORGIA SPECIAL PROVISION PROJECT No. CSBRG-0007-00(153), Xxxxx County P.I. No. 0007153