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Page 3 of 8 ER-5110 . construction foundation bracket,are installed vertically plumb. foundation anchors and compliance ofthe installation with the The foundation anchors are installed in a smooth,continuous approved construction documents and this evaluation repoR. manner,with the rate of rotation being within the range of 5 to In lieu of continuous special inspection, periodic special 20 revolutions per minute. Extensions are connected to the inspection in accordance with Section 1701.6.2 of the code is foundation anchor using the bofts specified in Table 2. permitted provided that installers are certified by the Coupling bolts must be tightened firmly with a wrench.The manufacturer and structural observations in accordance with foundation anchors are installed to the minimum depth shown Section 1702 are provided. on the plans,but with the top helix not less than 5 feet(1524 periodic inspections shall be performed in accordance with mm)below the bottom of the foundation. the following schedule, subject to the building official's 2.4.1.2 C150-0121,C150-0147,C150-0298 and C150-0299 approval: Foundation Repalr Brackets:The T-shaped upper bracket �, gefore the start of work Verify manufacturer, verify body is slid over the end of the extension of the installed installer's certification by the manufacturer, and confirm foundation anchor.The lower bracket body is attached to the pier and bracket configuration compliance with concrete foundation by means of a concrete anchor construction documents and this evaluation report. complying with the code or a current evaluation report. The 2, Installation of first helical steel pier—Verify that location, lower bracket body is attached to the upper bracket body installation torque,and depth of helical steel piers comply using the I'rfting bolts.A jack placed on top of the T-shaped �h construction documents.Veriy that installers keep an section of the bracket,with a jacking tool on top of the jack installation log. and connected to the lifting bolts, is used to lift the lower bracket body as it pushes down on the upper bracket body. 3. First connection to building structure—Verify that The nuts on the bolts are tightened and the jack is removed. installation of foundation repair brackets or new 2.4.1.3 Slab Repair Bracket: The slab repair bracket is �nstruction brackets complies with construction installed on top of a foundation anchor that has been installed documents and this evaluation report. through a 6-inch-diameter(152 mm)hole core-drilled through 4. End of work—Verify that installation log complies with the concrete slab.The top of the foundation anchor shall be requirements specified in the construction documents; 1 inch (25 mm) below the slab. Prior to installing the verify that installation of all structural connections foundation anchor, a 1-foot-deep (304.8 mm) pocket is �mplies with construction documents and this evaluation + excavated in the subgrade beneath the hole in the slab.The report. slab repair bracket tube is placed over the foundation anchor 2.5 Identification: shaft.The slab repair bracket channel is placed on top of the Foundation anchors have the word "CHANCE"stamped on bracket tube.The leveling boft is threaded into the channel the top of the helix.The foundation anchors are also identified I and tube, positioning the bracket so that each end of the by a tag or label bea�ng the name and address of A. B. channel is in contact with at least 4 square inches(2580 mm) Chance Co.,the catalog number,the product description,the of the slab. The maximum torque on the bolt is 150 ft.-Ibs. evaluation report number (ER-5110), and the name of the ' (203 N•m).See Figure 5 for typical installation details. inspection agency(RADCO).The brackets are identified by 2.4.1.4 New-construction Foundation Bracket:The end labels bearing the catalog number and product description.In of the shaft of the installed foundation anchor is cut off,or the addition,the letter'C'is stamped on the No.C150-0121,No. pier is installed until the shaft top is a minimum of 3 inches C150-0298,No.C150-0299 and No.C150-0147 brackets. (76 mm)above the foundation subgrade or at a level where 3.0 EVIDENCE SUBMITTED ' the bracket will support an upper layer of steel reinforcing bars in the concrete foundation. The new-construdion Material specifications,installation instructions,load tests and j foundation bracket is placed over,and seated on the top of, a quality control manual. the foundation anchor shaft.The steel reinforcing bars of the 4.0 FINDINGS foundation are placed in direct contact with the top of the That the HELICAL PIER°Foundation Systems described bracket. If required, the bracket is connected to the �n this report comply with the 1997 Unlform Bullding ' foundation anchor shaft with a /4 inch�iiameter(19 mm)bolt ,,,, installed through a 13/1e inch-diameter (20.6 mm) hole Code ,subject to the following conditions: predrilled in 1'/2-inch(38 mm)RCS foundation anchor shafts, 4.1 The foundation anchors are manufactured at the A. or a'/8 inch-diameter(22 mm)bolt installed through a 1-inch- B. Chance Co. facility located at 210 North Allen diameter(25 mm)hole predrilled in 1314 inch(44.5 mm)RCS Street,In Centralla,Mlssouri,undera qualitycontrol foundation anchor shafts.See Figure 6. program with inspections by RADCO(AA-650). 2.4.1.5 Light-duty Underpinning Bracket:The end of the 4.2 The foundation anchors are manufactured, shaft of the installed foundation anchor is cut off or the identified and installed In accordance wlth this foundation anchor is installed until the shaft top is a minimum report. of 1 inch (25 mm) below the bottom of the slab. The bolt 4.3 Special inspection is provided in accordance with guide is placed on top of the foundation anchor shaft and the pipe of the bracket is slipped over the shaft.The bracket is Section 2.4.2 of this report. attached to the concrete slab by means of concrete anchors 4.4 Engineering calculations and drawings, in installed in accordance with the evaluation report on the accordance with recognized engineering principles anchor.The lifting bolt is threaded into the pipe cap so that its and deslgn parameters,are p�ovided to the building base engages the bolt guide inside the pipe.The maximum ofFicial. torque on the bolt is 200 ft.-Ibs.(27.1 N•m).See Figure 8 for 4.5 A soll Investigation must be provided for each installation details. project site in accordance with Section 2.3.1 of this 2.4.2 Special Inspection:Special inspection in accordance report. with Section 1701 of the code shall be provided for the installation of the foundation anchors and foundation 4.6 The applied factored loads must not exceed the brackets.Items to be confirmed by the special inspector shall design strength loads in Section 2.3 of this report. include,but not be limited to,the manutacturers certification This report Is subject to re-examination in one year. of installers, the installation torque and depth of the