698POST-INSTALLED CONCRETE ANCHORS

698.1DESCRIPTION—This work is the furnishing and installing of post-installed concrete anchors intended

for attaching structural members/components to existing and new concrete. These requirements apply to permanently installed anchors not under sustained tension loads, temporary applications under sustained tension loads as designed and installed by the contractor, and contractor’s temporary shoring support systems that may include anchors under sustained tension loads. The requirements in this Section do not apply to anchors used for temporary concrete barriers, structure mounted, and anchors drilled in the downward direction.

698.2MATERIAL—

concrete anchors:

the following agencies, as applicable: International Code Council Evaluation Service (ICC -ES) or International Association of P lumbing and Mechanical Officials Uniform Evaluation Service (IAPMO -UES). Manufacture anchors under an approved quality assurance program with follow -up inspections by an inspection agency under ISO/IEC 17020 by a recognized accreditation body conforming to the requirements of ISO/IEC 17011.

Provide an evaluation report issued by ICC -ES or IAPMO -UES verifying that the mechanical anchors have been tested and qualified for performance in cracked and uncracked concrete according to ACI 355.2 or ICC-ES AC193. Use mechanical anchors from a source listed in Bulletin 15 and with an ICC-ES or IAPMO-UES listing.

limited to: threaded rod or reinforcing bar insert, adhesive formulation in a new adhesive cartridge or capsule dispenser, clean static mixing nozzle, extension tube, dispensing gun, piston plug, setting tools/wrenches, and the recommended supplies listed in the manufacturer’s printed installation instructions (MPII) for drilling and cleaning the drilled hole as specified in Section 698.3(b). Ensure that the adhesive has an uncracked characteristic bond strength as shown on the working drawings and is approved for use in sustained tension applications. Use injectable, two-component, cartridge-type adhesive systems dispensed and mixed through a static mixing nozzle. Before installation verify the adhesives meet acceptable installation and performance temperature ranges according to the MPII. As an alternative, adhesives may be supplied in a small sacrificial glass capsule or foil container. The use of bulk adhesive components supplied in industrial quantities contained in either barrels or 1-gallon

– 2

to 5-gallon cans, metered, mixed, and delivered manually are prohibited. Provide an evaluation report issued by ICC-ES or IAPMO-UES verifying that the adhesive anchors have been tested and qualified for performance in cracked and uncracked concrete according to ICC-ES AC 308. Use adhesive anchors from a source listed in Bulletin 15 and with an ICC-ES or IAPMO-UES listing.

Grade 60.

698.3CONSTRUCTION—

least 3 years of experience in the design of post-installed anchors.

concrete anchors are only to be installed by ACI Certified installers. Have anchor installers working on the project carry and provide their valid ACI Certification Card upon request.

for the installer on the project. Have the training consist of a review of the complete installation process for drilled-in anchors. The training is to include but not limited to the following:

Installer training is supplemental to the installer certification program and is not considered equivalent.

equipment, should meet the following:

or a hollow drill-bit system. Provide drill bits of diameters as required by the MPII. Carbide-tipped drill bits conforming to ANSI B212.15-1994.

– 3

may include steel wire brushes or nylon brushes.

repair areas and exposed concrete surfaces. Use compressed air free of oil; use filters and/or driers to achieve this requirement.

allowing dust particles to enter the ambient air and meeting OSHA silica requirements.

and submit Form CS -698. Form CS-698 is to identify the assumed conditions used in design that will be encountered at the time of anchor installation that effect capacity and will be verified by the Inspector in the field. Have the Post-Installed Anchor Designer submit signed and sealed post-installed anchor design calculations. Submit a letter of procedure stating method of drilling, the product prop osed for use, and the complete installation procedure. The letter of procedure must incorporate all manufacturer recommendations for installation. Along with the letter of procedure submit a sketch with enough detail to support the Post-Installed Anchor Designer’s calculations . Submit an inspection procedure that includes how the inspection will be completed by a certified anchor inspector and how often the inspections are to be performed. Also, submit the following information:

• Product name, type, diameter, and length.

• Product specifications with recommended design values and physical characteristics.

• Samples: Submit samples to LTS before incorporation in the work . Representative length and diameters of each type of anchor used on the project. Test as specified in Section 698.2(e).

• Test Reports: Certified test reports showing compliance with specified performance characteristics and physical characteristics.

• Most recent ICC-ES or IAPMO-UES Evaluation Report(s) - ESRs.

• MPII.

• Product name, type, diameter, and length.

• Product specifications with recommended design values and physical characteristics.

• Type of anchor installed in the adhesive and its mechanical and physical characteristics.

• Samples: Submit samples of the threaded rod or reinforcing bar insert to LTS before incorporation in the work. Representative length and diameters of each type of anchor used on the project . Test as specified in Section 698.2(f).

• Test Reports: Certified mill test reports showing compliance with specified performance characteristics and physical characteristics used in the manufacture of the anchors.

• Most recent ICCES or IAPMO-UES Evaluation Report(s) - ESRs.

– 4

• MPII.

installers performing work on the project on a form acceptable to the Representative. Submit the resumes of the certified installers stating manufacturer training date as specified in Section 698.3(a)3 and a list of additional training the certified installer has received since obtaining their credentials.

before the start of construction to allow a 14- calendar day review period. Submittals not accepted and requiring resubmission are subject to the 14-calendar day review period before the start of construction, with the review time beginning anew for each such submittal. Provide copies of the submittals to the contractors, manufacturers, Structure Contro l Engineer, and Inspector . Do not install anchors until the submittals have been accepted by the Department.

Submit records to the Representative identifying assigned lot numbers to the material represented. Unidentified material received at the site will be rejected. L oss of positive identification of materials will be cause for rejection.

subsequent rejection if the material is damaged in transit or later damaged or found defective for any reason.

meeting. Include the Structure Control Engineer, Inspectors, and installers in the meeting to review the installation process and requirements.

the accepted Form CS-698 whichever is more restrictive. Install anchors according to the letter of procedure as specified in Section 698.3(c) in concrete having a minimum age of 21 days at time of anchor installation. This requirement may be waived by the Representative if a moisture- insensitive adhesive is used in the installation or if the anchor is tested in earlier age concrete and the adjustment factor has been applied in the design. The Inspector will verify the field conditions meet or exceed the MPII or the conditions indicated on the accepted Form CS-698 and document the current field and installation conditions on Form CS-698. Concrete must have a minimum compressive strength (f'c) of 3,000 pounds per square inch or according to the design value on Form CS-698 at the time of anchor installation. Store and deliver materials in unopened and undamaged containers according to the storage conditions in the MPII. Discard adhesive anchor materials that have become expired or have been exposed to temperatures exceeding the MPII. The anchor or fastener coating, plating, or steel type must provide suitable corrosion protection for the environment in which the anchor or fastener is installed. Protect and handle materials according to MPII recommendations to prevent damage or deterioration. Prevent contact between carbon steel tool surfaces and stainless steel. As necessary, use special wrenches fabricated from stainless steel to mitigate contamination of the nuts and anchor steel. Clean and re- passivate stainless-steel parts suspected of being contaminated or compromised during shipment, storage, handling, or from nearby construction activities with citric acid.

Form CS-698. Examine supporting base materials and environmental conditions. Do not begin installation until base materials have been properly prepared. Meet the c oncrete surface temperature given in the MPII and Form CS -698 at the time of adhesive anchor installation. Install anchor in sound concrete. Provide design considerations for delaminated or otherwise structurally unsound concrete to ensure bond zone of the anchor is in sound concrete.

– 5

Use the hole cleaning technique described in the MPII. Install only when environmental conditions meet the MPII and Form CS-698 installation conditions. Protect drilled and cleaned anchor holes from contamination until the anchor is installed. Re-clean drilled anchor hole if the hole has become contaminated after initial cleaning.

Install anchors in the presence of an Inspector having valid ACI Post -Installed Concrete Anchor Installation Inspector Certification credentials to witness that installation of anchors is according to MPII. Unless approved by the Department, drill holes perpendicular to the concrete surface. Identify position of reinforcing steel and other embedded items before drilling holes for anchors using a pachometer. Exercise care in drilling to avoid damaging existing reinforcing or embedded items. Notify the Representative if reinforcing steel or other embedded items are encountered during drilling. Take precautions as necessary to avoid damaging prestressing tendons, electrical and telecommunications conduit, and gas lines. If a reinforcing bar is encountered during drilling, move the hole to a different location or drill through the reinforcing steel using a diamond core bit as directed by the Representative. Once the reinforcing steel is cut, resume drilling with a rotary impact drill. Patch abandoned holes with an approved non-shrink grout. Unless otherwise specified, do not drill holes in concrete or masonry until concrete, mortar, or grout has achieved a minimum compressive strength (f'c) of 3,000 pounds per square inch or according to the design value on Form CS-698. Thoroughly clean drilled holes according to the MPII. Use the MPII recommended and supplied special tools for installation of anchors unless otherwise allowed by the Department. Install anchors perpendicular to the concrete surface. Install anchors with a maximum ± 6-degree allowable tolerance from the perpendicular or according to the MPII, whichever is more restrictive. The projected length of the anchor beyond the concrete surface must be installed with a ± 1/4-inch tolerance. Unless otherwise indicated in the MPII, dispense adhesive through a tube or cartridge extension with a piston plug end device, beginning at the maximum depth of the hole and withdrawn as adhesive is injected, followed by inserting and rotating the anchor to the specified depth. Where necessary, seal spaces around anchors at the surface of horizontal to vertically overhead locations to prevent loss of the adhesive during curing. Use anchors that are clean, oil-free, and free of loose rust, mill scale, paint, or other coatings. Remove residual chemicals from hot-dipped galvanized threaded bars or reinforcing bars by cleaning according to ASTM D6386. Securely fix i nstalled adhesive anchors in- place to prevent displacement while the adhesive cures. Anchors displaced before full adhesive cure will be considered damaged and replaced at the Contractor's expense. After installation of the mechanical anchor, torque each anchor according to ACI 355.2 qualification testing to the values indicated in the MPII or to the values provided by the Department using approved torque methods only. After installation and cure of the adhesive material, torque each anchor system according to ACI 355.4 qualification testing to the values indicated in the MPII or to the values provided by the Department using approved torque methods only. For adhesive anchors, cure the adhesive according to the MPII. For adhesive anchors used in load applications, do not load or torque the anchor until after the manufacturer's minimum cure time according to the MPII, plus an additional 24 hours. Bending reinforcing bars or threaded bars is not allowed after being adhesively embedded in hardened, sound concrete, unless allowed by the Department.

in Section 698.3(c).

698.4MEASUREMENT AND PAYMENT—

– 6

installing anchors is included in payment made for the applicable items in which the anchor system fastens.

MATERIAL