SECTION STEEL H PILES. A. Section includes steel H piles embedded into drilled concrete piers.

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1 SECTION STEEL H PILES PART 1 - GENERAL 1.01 SCOPE OF WORK A. Section includes steel H piles embedded into drilled concrete piers. B. Furnish all labor, materials, equipment and incidentals required to install steel H piles, complete as shown on the Drawings and as specified herein. C. Furnish all surveys including layout, inspection and record-keeping incident to steel H piles as specified herein RELATED DOCUMENTS A. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division 01 Specification Sections, apply to this Section RELATED WORK A. Section Earth Moving. B. Section Historical Fill Removal, Transportation and Disposal. C. Section Cast-in-place Concrete. D. Section Precast Structural Concrete. E. Section Drilled Piers. F. Section Painting UNIT PRICES A. Contract Sum: Base Contract Sum on number and dimensions of piles indicated from tip to cutoff, plus not less than 12 inches (305 mm) of overlength for cutting piles at cutoff elevations. B. Work of this Section is affected as follows: 1. Additional payment for pile lengths in excess of that indicated, and credit for pile lengths less than that indicated, is calculated at unit prices stated in the Contract, based on net addition or deduction to total pile length as determined by Architect and measured to nearest 12 inches (305 mm). a. Additional payment for splices required to extend pile lengths in excess of that indicated is calculated at unit prices stated in the Contract. 2. Additional payment for number of piles in excess of that indicated, and credit for number of piles less than that indicated, is calculated at unit prices stated in the Contract

2 3. Unit prices include labor, materials, tools, equipment, and incidentals for furnishing, driving, cutting off, capping, and disposing of cutoffs. 4. Test piles that become part of permanent foundation system are considered as an integral part of the Work. 5. No payment is made for rejected piles, including piles driven out of tolerance, defective piles, or piles damaged during handling or driving PREINSTALLATION MEETINGS A. Preinstallation Conference: Conduct conference at Project site SUBMITTALS A. Product Data: For each type of product. B. Shop Drawings: For steel H piles. Show fabrication and installation details for piles. C. Concrete: Concrete Mix Design. D. Equipment Data: Description of Installation Equipment. E. Qualification Data: For Installer, professional engineer, and testing agency. F. Mill Test Reports: For steel H piles, steel castings, and steel plate, signed by manufacturer. G. Static Pile Test Reports: Submit within three days of completing each test. H. Pile Placement Records: Submit within three days of placing each pile. I. Certified Piles Survey: Submit within seven days of pile driving completion QUALITY ASSURANCE A. Installer Qualifications: The installer shall have at least 5 years experience in the installation of drilled piers and steel H piles, including the experience with similar subsurface materials, water conditions, pile placement and special techniques required. B. Drilled piers shall conform to the requirements of ACI except as modified by Section Drilled Piers DELIVERY, STORAGE, AND HANDLING A. Steel H Piles: Deliver piles to Project site in such quantities and at such times to ensure continuity of installation. Handle and store piles at Project site to prevent buckling or physical damage. 1. Painted Piles: Protect finish and touch up paint damage before driving piles. B. Drilled Piers Casings: Deliver and store drilled pier casings as required in Section Drilled Piers

3 1.09 FIELD CONDITIONS A. Protect structures, underground utilities, and other construction from damage caused by pile driving. B. Site Information: A Geotechnical Investigation Report has been prepared for this Project and is included elsewhere in Appendix E of the Project Manual for information only. The boring logs indicate the soils and conditions at the boring locations only. Soil conditions can change away from the actual boring location. The boring logs and geotechnical report are made available to the Contractor for information only and is to be used at Contractor s own risk. The Contractor is responsible for any conclusions to be drawn from the borings including the character of the materials to be encountered and the degree of difficulty to be expected in the performance of the work. The Contractor is encourage to perform his/her own subsurface investigation. C. It should not be assumed that materials other than those disclosed by the borings will not be encountered or that the proportions and character of the various materials will not vary from those indicated in the boring logs. PART 2 - PRODUCTS 2.01 STEEL H PILES A. High-Strength, Low-Alloy, Columbium-Vanadium Structural Steel: ASTM A 572/A 572M, Grade 50 (Grade 345). B. High-Strength, Low-Alloy, Nickel, Copper, Phosphorous Steel H Piles: ASTM A 690/A 690M FABRICATION A. Fabricate and assemble piles in shop to greatest extent possible. B. Pile-Length Markings: Mark each pile with horizontal lines at 12-inch (305-mm) intervals; label the distance from pile tip at 60-inch (1524-mm) intervals. Markings shall be placed only on the webs of the piles. Maintain markings on piles until embedded into drilled concrete piers. C. Fabricate piles in full-lengths. Fabricated splices and field splices will not be permitted SHOP PRIMER AND PAINTING A. General: Apply one coat of shop primer and one coat of shop paint to steel pile surfaces, except for surfaces to be encased in concrete. B. Primer: SSPC-Paint 15 Primer applied to steel not encased in concrete C. Paint Color: Match the color of the existing piles in Phase 1. Color shall be approved by the Architect. D. Surface Preparation: Clean surfaces to be painted. Remove loose rust and loose mill scale, spatter, slag, and flux deposits. Prepare surfaces according to SSPC-SP 10/NACE No. 2, "Near- White Blast Cleaning."

4 E. Painting: Immediately after surface preparation, apply coat of paint according to manufacturer's written instructions to provide a dry film thickness of not less than 8 mils (0.2 mm). 1. Apply second coat to provide a dry film thickness of not less than 8 mils (0.2 mm), resulting in a two-coat paint system thickness of not less than 16 mils (0.4 mm). 2. Mark pile lengths on web of piles after shop painting. PART 3 - EXECUTION 3.01 EXAMINATION A. Site Conditions: Do not start pile placement operations until earthwork fills have been completed or excavations have reached an elevation of 6 to 12 inches (152 to 305 mm) above bottom of drilled pier PREPARATION A. Notify adjacent and affected land owners and building occupants with 90 days notice before proceeding with the Work. B. Use drilling method that will not cause damage to nearby structures. C. Protect structures near the Work, from damage. D. Prepare to place piles from excavated working elevation. E. Cuts and fills will be completed and compacted to final elevation prior to proceeding with pile drilling. F. Subsurface conditions depicted on the drawings represent those encountered at the geotechnical report test boring locations. Actual conditions may vary between the test boring locations than depicted on the drawings. G. Provide equipment capable of installing drilled piers through existing foundations, rock, and other unforeseen or unknown material or items PILE INSTALLATION A. Drilling Holes: Drill holes at each pile location indicated on drawings. Drill holes as required in Section Drilled Piers except as modified in this Section. 1. Insert steel casing to drill holes as necessary to stabilize soil around holes. 2. Diameter of drilled holes shall be as indicated on the drawings and shall not include the thickness of the casings. 3. Obstructions shall be removed or cleared by excavation, drilling, chipping or other approved means. Blast or jetting will not be allowed

5 4. Abandoned elements, such as but not limited to foundations and subsurface concrete structures may be encountered during drilling operations. Every effort shall be made by the Contractor to drill through these abandoned elements with proper drilling equipment. 5. Do NOT drill holes within three (3) diameters of previously drilled hole until concrete has properly cured. 6. Each hole shall be drilled to a bottom elevation depth to maintain minimum embedment into bedrock as indicated on the drawings. 7. During drilling operations, record elevation bedrock is encountered and final bottom elevation for each hole. B. Pile Placement: Place steel piles in drilled holes as follows: 1. Ensure piles are centered in drilled holes prior to placing concrete. 2. Place piles in all locations and in the orientation as indicated on the drawings. 3. Secure piles in place with rigging. C. Concrete Placement: Place concrete in drilled holes after piles are in place and as follows: 1. Ensure piles remain in place and plumb during placement of concrete. 2. Place concrete continuously from final bottom elevation of drilled hole, as determined in field, to top elevation as indicated on the drawings. No cold joints shall be accepted in the drilled piers. 3. Use vibratory methods to ensure proper concrete consolidation - see Cast-in-Place Concrete Section Cut off tops of piles to elevations indicated on the drawings and grind top surface smooth. 5. Do not damage piles during installation or concrete placement. 6. Do not place piles in wet concrete. 7. Concrete placement, or concrete less than 48 hours old, shall not be within 2- feet of any pier drilling operation in progress. 8. Concrete strength shall be tested per Section Cast-in-place Concrete. 9. Remove casing as required in Section Drilled Piers. Do not damage steel H piles while removing casings. D. Pile Placement Tolerances: Place steel H piles without exceeding the following tolerances, measured at pile heads: 1. Location: 2 inches (50 mm) from location indicated after embedment into drilled pier is completed

6 2. Plumb: Maintain 1 inch (25 mm) in 48 inches (1219 mm) from vertical, or a maximum of 2 inches (102 mm), measured when pile is above ground. 3. Cut-off: Maintain 2 inches from Cut-off Elevation 4. Relative Variation: Maintain 2 inches (50 mm) measured from any point along the exposed length of the pile along both axes of the cross section of the pile. E. Cut off tops of driven piles square with pile axis and at elevations indicated. F. Pile Placement Records: Maintain accurate placement records for each pile, compiled and attested to by a qualified professional engineer. Include the following data: 1. Project name and number. 2. Name of Contractor. 3. Pile location. 4. Sequence of pile placement. 5. Pile dimensions. 6. Ground elevation. 7. Elevation of tips after placement. 8. Final tip and cutoff elevations of piles after placement. 9. Records of re-placing. 10. Time, pile-tip elevation, and reason for interruptions. 11. Pile deviations from location and plumb. 12. Preboring or special procedures used. 13. Unusual occurrences during pile placement. G. Certified Piles Survey: Engage a land surveyor to prepare a piles survey showing final location of piles in relation to the property survey and existing benchmarks. 1. Notify Architect when deviations from locations exceed allowable tolerances FIELD QUALITY CONTROL A. Field inspection and Testing will be performed under provisions of Division 01. B. Drilled Piers Inspection shall be performed per IBC Table

7 C. Concrete tests shall be performed per Section Cast-in-Place Concrete. 1. Steel H pile installation will not be acceptable if concrete tests indicate the 28-day concrete strength is not reached for this work. D. Steel H piles will not be acceptable if they are installed within the tolerances required by this Section. E. Prepare test and inspection reports TOUCHUP PAINTING A. Clean field welds, splices, and abraded painted areas and field-apply paint according to SSPC- PA 1. Use same paint and apply same number of coats as specified for shop painting. 1. Apply touchup paint before driving piles to surfaces that are immersed or inaccessible after driving DISPOSAL A. Remove withdrawn piles and cutoff sections of piles from site, and legally dispose of them off Owner's property. END OF SECTION

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