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ESR-3969 I Most Widely Accepted and Trusted Page 5 of 10
<br /> smooth,and full bearing surface. Once the pile has been 8. Verification that direct load bracket cap plates are in
<br /> installed to the design load, the bracket shelf is rotated full contact with the top of the pile shaft.
<br /> into place under the existing concrete footing, column 9. Compliance of the installation with the approved
<br /> pad, or grade beam. Any excess pile length will be cutconstruction documents and this evaluation report.
<br /> off level, above the bracket several inches,to enable the
<br /> mounting of the bracket. The T-bracket will be placed 5.0 CONDITIONS OF USE
<br /> into the top helical pile and bracket assembly. The The PierTech helical foundation systems described in
<br /> threaded rods, hex nuts and washers, supplied with the this report, comply with or are suitable alternative to
<br /> bracket, are added to hold the bracket in position. The what is specified in, the code listed in Section 1.0 of this
<br /> hex nuts shall be snug tightened, as defined in Section report,subject to the following conditions:
<br /> J3 of AISC 360. A jacking block bracket, and lifting jack
<br /> are installed to raise the foundation to the desired 5.1 The PierTech helical foundation systems are
<br /> elevation. Any lifting of the existing structure must be manufactured identified and installed in accordance
<br /> verified by a registered design processional and is with this report, the site-specific approved
<br /> subjected to approval of the code official to ensure that construction documents (engineering plans and
<br /> the foundation, superstructure, and helical piles are not specifications), IBC Section 1810.4.11, and the
<br /> overstressed. Once the foundation has been raised to its manufacturer's written installation instructions. In
<br /> desired elevation, the hex nuts over the T-bracket are case of conflict, the most stringent requirement
<br /> tightened, and the jacking brackets and lifting jacks are governs.
<br /> removed. Cut off the excess thread rod,which was used 5.2 The PierTech helical foundation systems have been
<br /> for lifting, from above the bracket assembly. The field evaluated for support of structures assigned to
<br /> cutting and bolting must be in accordance with the most Seismic Design Categories A, B and C in
<br /> restrictive requirements as described in the evaluation accordance with IBC Section 1613. Helical
<br /> report, the IBC, AISC 360, and the manufacturer's foundation systems that support structures
<br /> written instructions. The exaction must be backfilled in assigned to Seismic Design Category D, E or F, or
<br /> accordance with 2015, 2012, and 2009 IBC Section that are located in Site Class E or F,are outside the
<br /> 1804. scope of this report, and are subject to the approval
<br /> 4.2.4 Type B Direct Load Brackets: Type B brackets of the code official based upon submission of a
<br /> must be placed over the top of the helical piles. The top design in accordance with the code by a registered
<br /> of the pile elevation must be established and must be design professional.
<br /> consistent with the specified elevation. If necessary, the 5.3 Type A (Side Load) and Type B (Direct Load)
<br /> top of the pile may be cut off level to the required length brackets are limited to compression loads only.
<br /> in accordance with the manufacturer's instructions and
<br /> AISC 360 requirements so as to ensure full, direct 5.4 Type A (Side Load) and Type B (Direct Load)
<br /> bearing contact between the top of the pile shaft and the brackets must be used only to support structures
<br /> bracket. In the case of Type B bracket, two %-inch- that are laterally braced as defined in IBC Section
<br /> diameter (19 mm) bolts and hex nuts as described in 1810.2.2. Shaft couplings must be located within
<br /> Section 3.3.6 of this report may be installed for helical firm or soft soil as defined in Section 4.1.3.
<br /> piles under compression. The bolts must be snug- 5.5 The installations of Type A(Side Load) and Type B
<br /> tightened, as defined in Section J3 of AISC 360. The (Direct Load) brackets are limited to regions of
<br /> embedment and edge distance of the bracket into the concrete members where analysis indicates no
<br /> concrete foundation must be as described in the cracking at service load levels.
<br /> approved plans and as indicated in Table 1 of this report.
<br /> The concrete foundation must be cast around the 5.6 The PierTech helical foundation systems must not
<br /> bracket in accordance with the approved construction be used in conditions that are indicative of potential
<br /> documents. pile deterioration or corrosion situations as defined
<br /> by the following: (1) soil resistivity less than
<br /> 4.3 Special Inspection: 1,000 ohm-cm; (2) soil pH less than 5.5; (3) soils
<br /> Special inspections in accordance with 2015 and 2012 with high organic content; (4) soil sulfate
<br /> IBC Section 1705.9(2009 IBC Section 1704.10) must be concentrations greater than 1,000 ppm; (5) soils
<br /> performed continuously during installation of PierTech located in landfill,or(6)soil containing mine waste.
<br /> helical foundation systems (piles and brackets). Items to 5.7 Zinc-coated steel and bare steel components must
<br /> be recorded and confirmed by the special inspector must not be combined in the same system. All helical
<br /> include,but are not be limited to,the following: foundation components must be galvanically
<br /> 1. Verification of the product manufacturer, the isolated from concrete reinforcing steel, building
<br /> manufacturer's certification of installers. structural steel, or any other metal building
<br /> components.
<br /> 2. Product identification including lead sections,
<br /> couplings, extension sections, brackets, bolts and 5.8 The helical piles must be installed vertically into the
<br /> nuts, as specified in the construction documents ground with the maximum allowable angle of
<br /> and this evaluation report. inclination of 1 degree.
<br /> 3. Installation equipment used. 5.9 Engineering calculations and drawings, in
<br /> accordance with recognized engineering principles,
<br /> 4. Written installation procedures. as described in IBC Section 1604.4, and complying
<br /> 5. Tip elevations, the installation torque and final with Section 4.1 of this report, prepared by a
<br /> depth of the helical foundation systems. registered design professional, are provided to,and
<br /> are approved by the code official.
<br /> 6. Inclination and position/location of helical piles. 5.10 The adequacy of the concrete structures that are
<br /> 7. Tightness of all bolted connections. connected to the PierTech brackets must be
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