CITY OF LOS ANGELES CALIFORNIA

Transcription

1 BOARD OF BUILDING AND SAFETY COMMISSIONERS HELENA JUBANY PRESIDENT VAN AMBATIELOS VICE-PRESIDENT E. FELICIA BRANNON VICTOR H. CUEVAS GEORGE HOVAGUIMIAN CITY OF LOS ANGELES CALIFORNIA ERIC GARCETTI MAYOR DEPARTMENT OF BUILDING AND SAFETY 20 NORTH FIGUEROA STREET LOS ANGELES, CA 9002 RAYMOND S. CHAN, C.E., S.E. SUPERINTENDENT OF BUILDING INTERIM GENERAL MANAGER Hilti, Inc. RESEARCH REPORT: RR 277M 00 S. 22 nd East Avenue (CSI # ) Tulsa, OK 76 BASED UPON ICC EVALUATION SERVICE REPORT NO. ESR-8 Attn: Tom Haanen, P. E. (98) REEVALUATION DUE DATE: January, 206 Issued date: March, 20 Code: 20 LABC GENERAL APPROVAL Reevaluation Kwik Bolt Masonry Anchors DETAILS The above assemblies and/or products are approved when in compliance with the description, use, identification and findings of Evaluation Report No. ESR-8, reissued February, 20, of the ICC Evaluation Service, Incorporated. The report in its entirety is attached and made part of this general approval. The parts of Report No. ESR-8 marked by the asterisks are the parts modified by the Los Angeles Building Department from this approval. The approval is subject to the following conditions:. The values shown in this report shall not be used in repair, retrofit and new construction of tilt-up wall anchors (in tension) for the connection with the horizontal wood diaphragm. 2. The concrete shall have attained its minimum design strength prior to installation of the anchors. RR 277M Page of LADBS G- (Rev.02/20/20) AN EQUAL EMPLOYMENT OPPORTUNITY - AFFIRMATIVE ACTION EMPLOYER

2 Hilti, Inc. RE: Kwik Bolt Masonry Anchors. Design of anchors installed in the face of fully grouted concrete masonry construction to resist dead, live, wind and earthquake load applications shall be in accordance with Sections. of ESR-8.. Anchors shall be installed in accordance with Section.2 of ESR-8 and the holes for the anchors shall be predrilled with carbide-tipped masonry drill bits complying with ANSI B into the approved substrate, and have the same diameter as the nominal diameter of the anchor.. Calculations demonstrating that the applied loads are less than the allowable loads described in this report shall be submitted to the plan check engineer at the time of permit application. The calculations shall be prepared by a Civil or Structural Engineer registered in the State of California. EXCEPTION: Anchors used for the installation of mechanical, plumbing and electrical equipment shall be designed and detailed on a plan prepared by an engineer licensed by the state of California. 6. Special inspection shall be provided in accordance with Section 70 of Los Angeles Building Code. 7. Use of Kwik Bolt anchors shall be limited to dry and interior locations. 8. Each anchor shall bear a permanent identification indicating the manufacturer's name or symbol and product designation. 9. The anchors shall be installed per the manufacturer's instructions, except as otherwise stated in this report. A copy of this research report and the installation instructions shall be available at each job site. DISCUSSION The report is in compliance with the 20 City of Los Angeles Building Code. The approval is based on tests in accordance with ICC-ES Acceptance Criteria for Expansion Anchors in Masonry Elements (AC0), dated January This general approval will remain effective provided the Evaluation Report is maintained valid and unrevised with the issuing organization. Any revisions to this report must be submitted to this Department, with appropriate fee, for review in order to continue the approval of the revised report. RR 277M Page 2 of

3 Hilti, Inc. RE: Kwik Bolt Masonry Anchors Addressee to whom this Research Report is issued is responsible for providing copies of it, complete with any attachments indicated, to architects, engineers and builders using items approved herein in design or construction which must be approved by Department of Building and Safety Engineers and Inspectors. This general approval of an equivalent alternate to the Code is only valid where an engineer and/or inspector of this Department has determined that all conditions of this approval have been met in the project in which it is to be used. ALLEN PEERY, Chief Engineering Research Section 20 N. Figueroa St., Room 880 Los Angeles, CA 9002 Phone Fax KH RR277M/MSWord200 R0/06/ B/20 Attachment: ICC ES Evaluation Report No. ESR- 8 ( pages) RR 277M Page of

4 ICC-ES Evaluation Report (800) (62) ESR-8 Reissued February, 20 This report is subject to renewal February, 206. A Subsidiary of the International Code Council DIVISION: MASONRY Section: Masonry Anchors REPORT HOLDER: HILTI, INC. 00 SOUTH 22 ND EAST AVENUE TULSA, OKLAHOMA 76 (800) HiltiTechEng@us.hilti.com EVALUATION SUBJECT: KWIK BOLT MASONRY ANCHORS.0 EVALUATION SCOPE Compliance with the following codes: 2009 and 2006 International Building Code (IBC) 2009 and 2006 International Residential Code (IRC) Property evaluated: Structural 2.0 USES The Kwik Bolt (KB) Masonry Anchor is used to resist static and transient seismic and wind tension and shear loads in uncracked, grout-filled concrete masonry. The anchor system is an alternative to cast-in-place anchors described in Section 207 (TMS 02/ACI 0/ASCE ) of the IBC. The anchor systems may also be used where an engineered design is submitted in accordance with Section R0.. of the IRC..0 DESCRIPTION. Kwik Bolt : The Kwik Bolt expansion anchors consist of a stud, wedge, nut, and washer. The stud is manufactured from carbon material. The carbon steel Kwik Bolt anchors have a μm ( inch) zinc plating. The anchor is illustrated in Figure of this report. The wedges for the carbon steel anchors are made from carbon steel, except for all / -inch (6. mm) lengths, which have AISI 6 stainless steel wedges. All carbon steel components are zinc-plated. The stud consists of a highstrength rod threaded at one end. The standard Kwik Bolt has a thread length equal to or less than three bolt diameters, while the Long Thread Kwik Bolt has a thread length greater than three bolt diameters. The tapered mandrel has an increasing diameter toward the anchor base, and is enclosed by a three-section wedge that freely moves around the mandrel. In the vertical direction, the wedge movement is restrained by the mandrel taper at the bottom and by a collar at the top of the mandrel. When the anchor nut is tightened, the wedge is forced against the wall of the predrilled hole to provide anchorage..2 Grout-filled Concrete Masonry: The masonry prism strength must be at least,00 psi (0. MPa) at the time of anchor installation. Grout-filled masonry must be constructed from the following materials:.2. Grout-filled Masonry Units: Grout-filled concrete masonry walls must be constructed from minimum Type I, Grade N, lightweight, medium-weight or normal-weight concrete masonry units (CMUs) conforming to ASTM C90 (IBC). The minimum allowable nominal size of the CMU is 8 inches (20 mm) wide by 8 inches (20 mm) high by 6 inches (06 mm) long..2.2 Grout: The masonry units must be fully grouted with grout complying with Section 20.2 of the IBC or Section R609.. of the IRC, and having a minimum compressive strength as indicated in the tables at 28 days..2. Mortar: Mortar must be Type N, S or M, prepared in accordance with Section 20.8 of the IBC or Section R607 of the IRC..0 DESIGN AND INSTALLATION. Design: Minimum embedment depth, edge distance, and spacing requirements are set forth in Table 2. Allowable stress design tension and shear loads are as noted in Tables 2 and. Allowable loads for Kwik Bolt anchors subjected to combined shear and tension forces are determined by the following equation: (P s /P t ) / + (V s /V t ) / where: P s = Applied service tension load (lbf or N). P t = Allowable service tension load (lbf or N). V s = Applied service shear load (lbf or N). V t = Allowable service shear load (lbf or N)..2 Installation Requirements: Kwik Bolt must be installed in holes drilled into the base material using carbide-tipped masonry drill bits complying with ANSI B The nominal drill bit diameter must be equal to that of the anchor. The drilled hole must ICC-ES Evaluation Reports are not to be construed as representing aesthetics or any other attributes not specifically addressed, nor are they to be construed as an endorsement of the subject of the report or a recommendation for its use. There is no warranty by ICC Evaluation Service, LLC, express or implied, as to any finding or other matter in this report, or as to any product covered by the report. 000 Copyright 20 Page of

5 ESR-8 Most Widely Accepted and Trusted Page 2 of exceed the depth of anchor embedment by at least one anchor diameter to permit over-driving of anchors and to provide a dust collection area. The anchor must be hammered into the predrilled hole until at least six threads are below the fixture surface. The nut must be tightened against the washer until the torque values specified in Table are attained.. Special Inspection: Special inspection must be provided in accordance with Section 70 of the IBC when design loads are based on special inspections being provided during anchor installation, as set forth in Tables 2 and. Special inspection in accordance with Section 70 of the IBC must be provided under the IRC when special inspection is specified in Tables 2 and. Under the IBC, additional requirements as set forth in Sections 70 and 706 must be observed, where applicable. The code official must receive a report, from an approved special inspector, that includes the following details:. Anchor description, including the anchor product name, nominal anchor and bolt diameters, and anchor length. 2. Hole description, including verification of drill bit compliance with ANSI B Installation description, including verification of masonry compressive strength and verification of anchor installation and location (spacing and edge distance) in accordance with Hilti s published installation instructions and this report..0 CONDITIONS OF USE The Kwik Bolt Masonry Anchors described in this report comply with, or are suitable alternatives to what is specified in, those codes listed in Section.0 of this report, subject to the following conditions:. Anchor sizes, dimensions, and installation must comply with this report and Hilti s published installation instructions..2 Allowable tension and shear loads must be as noted in Tables 2 and of this report.. Calculations and details demonstrating compliance with this report must be submitted to the code official for approval.. The use of anchors must be limited to installation in uncracked grout filled concrete masonry. Cracking occurs when ft > fr due to service loads or deformations.. Design of Kwik Bolt Masonry Anchors installed in grout-filled concrete masonry to resist dead, live, wind and earthquake load applications must be in accordance with Section...6 When using the basic load combinations in accordance with IBC Section 60.., allowable loads are not permitted to be increased for wind or earthquake loading. When using the alternative basic load combinations in IBC Section that include wind or seismic loads, the allowable shear and tension loads for anchors are permitted to be increased by / percent. Alternatively, the basic load combinations may be reduced by a factor of 0.7 when using IBC Section Where not otherwise prohibited in the applicable code, anchors are permitted for use with fireresistance-rated construction provided that at least one of the following conditions is fulfilled: Anchors are used to resist wind or seismic forces only. Anchors that support fire-resistance-rated construction or gravity load bearing structural elements are within a fire-resistance-rated envelope or a fire-resistance-rated membrane, are protected by approved fire-resistance-rated materials, or have been evaluated for resistance to fire exposure in accordance with recognized standards. Anchors are used to support nonstructural elements..8 Use of carbon steel Kwik Bolt anchors must be limited to dry, interior locations..9 Special inspection must be provided in accordance with Section. of this report when required by Tables 2 and..0 Anchors are manufactured by Hilti, Inc., Feldkircherstrasse 00, Schaan, Liechtenstein; and Hilti Operaciones de Mexico S.A., Matamoros, Tamaulipas, Mexico, under a quality control program with inspections conducted by ICC-ES. 6.0 EVIDENCE SUBMITTED Data in accordance with the ICC-ES Acceptance Criteria for Expansion Anchors in Masonry Elements (AC0), dated December 2009, including seismic tests, reduced spacing tests and reduced edge distance tests. 7.0 IDENTIFICATION The anchors must be identified in the field by dimensional characteristics and packaging. The packaging label indicates the manufacturer s name (Hilti, Inc.) and address, the size and type of anchor, and the ICC-ES report number (ESR-8). A length identification code letter is stamped on the threaded end of the bolt. The length identification system is described in Table.

6 ESR-8 Most Widely Accepted and Trusted Page of TABLE INSTALLATION SPECIFICATIONS SETTING DETAILS ANCHOR SIZE / inch / 8 inch / 2 inch / 8 inch / inch Drill bit size = anchor diameter (inches) Wedge clearance hole (inches) / / 6 Anchor length (min./max.) (inches) / / 2 2 / / 7 / Thread length std./long thread length (inches) Installation: Torque guide values Carbon steel: Min. Embedment (ft-lb) in Carbon steel: Std. Embedment concrete masonry Min. base material thickness (inches) For SI: inch = 2. mm, ft-lbf =.6 N-m. / / 8 7 / 6 / 2 9 / 6 / 8 / 6 / / 6 7 / 8 / 8 / / / 2 7 / inches or. embedment depth, whichever is greater Installation torques are applicable for all anchors installations unless noted otherwise in this report TABLE 2 ALLOWABLE TENSION AND SHEAR VALUES FOR HILTI KWIK BOLT CARBON STEEL ANCHORS INSTALLED IN THE FACE SHELLS OF GROUT-FILLED CONCRETE MASONRY WALLS (in pounds),2,, ANCHOR DIAMETER (inch) / / 8 / 2 / 8 / For SI: inch = 2. mm, lb =. N. EMBEDMENT DEPTH (inches) / 8 2 / 8 2 / 2 2 / / 2 2 / / / 8 MINIMUM TENSION SHEAR DISTANCE FROM EDGE OF WALL 6 (inches) IBC/IRC IBC/IRC , , , , ,0 2, ,08,6 67 2,68 2,627 Values valid for anchors installed in face shells of Type, Grade N, lightweight, medium-weight, or normal-weight concrete masonry units conforming to ASTM C90. The masonry units must be fully grouted with coarse grout conforming to IBC Mortar must comply with IBC Section Masonry prism strength must be at least,00 psi at the time of anchor installation when tested in accordance with IBC Section Anchors must be installed a minimum of / 8 inches from any vertical mortar joint in accordance with Figure 2. Anchor locations are limited to one per masonry cell with a minimum spacing of 8 inches on center. Allowable loads or applied loads may be modified in accordance with Section.6 of this report due to short-term wind or seismic loads. Embedment depth must be measured from the outside face of the concrete masonry unit. 6 For intermediate edge distances, allowable loads may be determined by linearly interpolating between the allowable loads at the two tabulated edge distances. 7 These tension values are only applicable when anchors are installed with special inspection in accordance with Section. of this report.

7 ESR-8 Most Widely Accepted and Trusted Page of ANCHOR DIAMETER (inch) TABLE ALLOWABLE TENSION AND SHEAR VALUES FOR HILTI KWIK BOLT CARBON STEEL ANCHORS INSTALLED IN TOP OF GROUT-FILLED CONCRETE MASONRY WALLS (in pounds),2,, EMBEDMENT DEPTH (inches) TENSION Perpendicular to Wall SHEAR Parallel to Wall IBC/IRC IBC/IRC IBC/IRC / / 8 / For SI: inch = 2. mm, lb =. N. Values valid for anchors installed into top cells of Type, Grade N, lightweight, medium-weight, or normal-weight concrete masonry units conforming to ASTM C90. The masonry units must be fully grouted with coarse grout conforming to IBC Mortar must comply with IBC Section Masonry prism strength must be at leasst,00 psi at the time of anchor installation when tested in accordance with IBC Section Anchors must be installed a minimum of / inches from edge of the block. Anchor locations must be limited to one per masonry cell with a minimum spacing of 8 inches on center. Allowable loads or applied loads may be modified in accordance with Section.6 of this report due to short-term wind or seismic loads. Embedment depth is measured from the top edge of the concrete masonry unit. 6 These tension values are only applicable when anchors are installed with special inspection in accordance with Section. of this report. TABLE LENGTH IDENTIFICATION CODES STAMP ON ANCHOR A B C D E F G H I J K L M N O P Q R S T U V W X Y Z Length of From / / 2 / 2 / 2 / / / / / Anchor Up to but not (inches) including 2 2 / 2 / 2 / 2 / / / / / For SI: inch = 2. mm.