ACI 355.2 07 2007
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355.2-07 Qualification of Post-Installed Mechanical Anchors in Concrete & Commentary
Published By | Publication Date | Number of Pages |
ACI | 2007 | 39 |
ACI 355.2 prescribes testing programs and evaluation requirements for post-installed mechanical anchors intended for use in concrete under the design provisions of ACI 318. Criteria are prescribed for determining whether anchors are acceptable for use in uncracked concrete only, or in cracked as well as uncracked concrete. Performance categories for anchors are established, as are the criteria for assigning anchors to each category. The anchor performance categories are used by ACI 318 to assign capacity reduction factors and other design parameters. Keywords: anchors; cracked concrete; expansion anchors; fasteners; mechanical anchors; post-installed anchors; undercut anchors.
PDF Catalog
PDF Pages | PDF Title |
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3 | CONTENTS |
5 | STANDARD CHAPTER 1— SCOPE 1.1 1.2 1.3 1.4 1.5 CHAPTER 2— DEFINITIONS AND NOTATION 2.1— Definitions 2.1.1 Anchor category 2.1.2 Anchor group 2.1.3 Anchor system 2.1.4 Characteristic value 2.1.5 Concrete breakout failure 2.1.6 Cracked concrete 2.1.7 Displacement-controlled expansion anchor 2.1.8 Pullout failure 2.1.9 Pull-through failure 2.1.10 Setting of an anchor 2.1.11 Splitting failure 2.1.12 Statistically equivalent |
6 | 2.1.13 Steel failure 2.1.14 Test series 2.1.15 Torque-controlled expansion anchor 2.1.16 Uncracked concrete |
7 | 2.1.17 Undercut anchor 2.2—Notation |
8 | CHAPTER 3— SIGNIFICANCE AND USE 3.1 CHAPTER 4— GENERAL REQUIREMENTS 4.1— Testing sequence 4.2—Test samples |
10 | 4.3—Testing by independent testing and evaluation agency and by manufacturer 4.4—Changes to product CHAPTER 5— REQUIREMENTS FOR TEST SPECIMENS, INSTALLING ANCHORS, AND CONDUCTING TESTS 5.1— Concrete for test members 5.1.1 Aggregates 5.1.2 Cement 5.1.3 Concrete strength 5.1.4 Test members 5.2—Anchor installation 5.2.1 General requirements 5.2.1.1 5.2.1.2 5.2.1.3 5.2.2 Drill bit requirements |
11 | 5.2.2.1 5.2.2.2 5.2.2.3 5.2.2.4 5.2.2.5 5.2.3 Setting requirements for testing 5.2.3.1 General torque requirements 5.2.3.1.1 5.2.3.2 Setting of torque-controlled expansion anchors 5.2.3.2.1 5.2.3.2.2 5.2.3.3 Setting of displacement-controlled expansion anchors 5.2.3.3.1 Partial expansion 5.2.3.3.2 Reference expansion |
12 | 5.2.3.4 Setting of undercut anchors 5.3—Test methods 5.4—Tests in cracked concrete 5.4.1 5.4.2 5.4.3 5.4.4 Tolerance on crack width 5.5—General requirements for anchor behavior 5.5.1 Overall load-displacement behavior 5.5.1.1 |
13 | 5.5.1.2 5.5.2 Load-displacement behavior at service loads 5.5.3 Modes of failure |
14 | 5.5.3.1 5.5.3.2 5.5.3.3 CHAPTER 6— REQUIREMENTS FOR ANCHOR IDENTIFICATION 6.1—Determination of critical characteristics of anchors 6.2—Specification of critical characteristics of anchors 6.3—Verification of conformance to drawings and specifications 6.3.1 6.3.2 Constituent materials 6.3.3 Quality control CHAPTER 7— REFERENCE TESTS 7.1— Purpose 7.2—Reference tension tests for single anchors without spacing and edge effects ( Table 4.1, Tests 1 and 2, or Table 4.2, Tests 1, 2, 3, and 4) 7.2.1 Requirements for reference tests 7.3—Required calculations using results of reference tests 7.3.1 For concrete failure |
15 | 7.3.2 For steel failure in tension, cracked and uncracked concrete 7.3.3 For pullout failure in tension, cracked and uncracked concrete CHAPTER 8— RELIABILITY TESTS 8.1— Purpose 8.2—Reliability tests using reduced installation effort ( Table 4.1, Test 3, and Table 4.2, Test 5) 8.2.1 Purpose 8.2.2 General test conditions 8.2.2.1 Torque-controlled expansion anchors 8.2.2.2 Displacement-controlled expansion anchors 8.2.2.3 Torque, load, and displacement-controlled undercut anchors 8.2.3 Requirements 8.3—Reliability in low-strength concrete with large drill bit ( Table 4.1, Test 4, and Table 4.2, Test 6) 8.3.1 Purpose 8.3.2 General test conditions 8.3.3 Requirements 8.4—Reliability in high-strength concrete with small drill bit ( Table 4.1, Test 5, and Table 4.2, Test 7) 8.4.1 Purpose 8.4.2 General test conditions 8.4.3 Requirements |
16 | 8.5—Reliability under repeated load ( Table 4.1, Test 6) 8.5.1 Purpose 8.5.2 General test conditions 8.5.3 Requirement 8.6—Reliability in cracked concrete where crack width is cycled ( Table 4.2, Test 8) 8.6.1 Purpose 8.6.2 General test conditions 8.6.3 8.6.4 8.6.5 Requirement |
17 | CHAPTER 9— SERVICE-CONDITION TESTS 9.1— Purpose 9.2—Service-condition tension test with single anchor and with two edges ( corner) ( Table 4.1, Test 7, and Table 4.2, Test 9) 9.2.1 Purpose 9.2.2 Requirements for critical edge distance 9.3—Service-condition test at minimum edge distance and minimum spacing ( Table 4.1, Test 8, and Table 4.2, Test 10) 9.3.1 Purpose 9.3.2 General test conditions 9.3.3 9.3.4 9.3.5 9.3.6 Requirement 9.4—Service-condition shear test for single anchors without spacing and edge effects ( Table 4.1, Test 9, and Table 4.2, Test 11) 9.4.1 Purpose |
18 | 9.4.2 9.5—Service-condition, simulated seismic tension tests ( Table 4.2, Test 12) 9.5.1 Purpose 9.5.2 Tests 9.5.3 Requirements |
19 | 9.6—Service condition, simulated seismic shear tests ( Table 4.2, Test 13) 9.6.1 Purpose 9.6.2 Tests 9.6.3 Requirements |
20 | CHAPTER 10— ESTABLISHING ANCHOR CATEGORIES 10.1 10.2 CHAPTER 11— PRESENTING ANCHOR DATA 11.1—Data analysis |
21 | 11.2—Format of data sheet 11.3—General requirements 11.4—Contents of evaluation report 11.4.1 11.4.2 11.4.3 CHAPTER 12— REQUIREMENTS FOR INDEPENDENT TESTING AND EVALUATION AGENCY 12.1 12.2 CHAPTER 13— REFERENCES 13.1— Referenced standards |
23 | MANDATORY APPENDIXES APPENDIX A1— REQUIREMENTS FOR NORMALIZATION OF RESULTS A1.1— Normalization of capacities to take account of concrete and steel strengths A1.2—Concrete breakout or splitting failure A1.3—Pullout and pull-through failure A1.4—Steel failure APPENDIX A2— REQUIREMENTS FOR ESTABLISHING CHARACTERISTIC CAPACITIES A2.1— Scope A2.2—Procedure APPENDIX A3— REQUIREMENTS FOR TEST MEMBERS A3.1— Tests in uncracked concrete A3.1.1 A3.1.2 A3.2—Tests in cracked concrete |
24 | A3.3—Casting and curing of test members A3.3.1 A3.3.2 |
25 | COMMENTARY CHAPTER R1— SCOPE R1.1 R1.4 CHAPTER R2— DEFINITIONS AND NOTATION R2.1— Definitions R2.1.4 Characteristic value R2.1.5 Concrete breakout failure R2.1.8 Pullout failure R2.1.9 Pull-through failure R2.1.12 Statistically equivalent R2.1.16 Uncracked concrete R2.2—Notation CHAPTER R3— SIGNIFICANCE AND USE R3.1 CHAPTER R4— GENERAL REQUIREMENTS R4.1— Testing sequence |
28 | R4.2—Test samples R4.2.2 R4.2.3 CHAPTER R5— REQUIREMENTS FOR TEST SPECIMENS, INSTALLING ANCHORS, AND CONDUCTING TESTS R5.1— Concrete for test members |
29 | R5.1.1 Aggregates R5.1.2 Cement R5.1.3 Concrete strength R5.2—Anchor installation R5.2.2 Drill bit requirements R5.2.3 Setting requirements for testing R5.2.3.1 General torque requirements R5.2.3.3 Setting of displacement-controlled expansion anchors R5.2.3.4 Setting of undercut anchors R5.4—Tests in cracked concrete R5.5—General requirements for anchor behavior R5.5.1 Overall load-displacement behavior |
30 | R5.5.3 Modes of failure R5.5.3.2 CHAPTER R6— REQUIREMENTS FOR ANCHOR IDENTIFICATION R6.3—Verification of conformance to drawings and specifications R6.3.1 CHAPTER R7— REFERENCE TESTS R7.2—Reference tension tests for single anchors without spacing and edge effects ( Table 4.1, Tests 1 and 2, or Table 4.2, Tests 1, 2, 3 and 4) |
31 | R7.2.1 Requirements for reference tests R7.3—Required calculations using results of reference tests R7.3.1 For concrete failure CHAPTER R8— RELIABILITY TESTS R8.2—Reliability tests using reduced installation effort ( Table 4.1, Test 3, and Table 4.2, Test 5) R8.3—Reliability in low-strength concrete with large drill bit ( Table 4.1, Test 4, and Table 4.2, Test 6) R8.4—Reliability in high-strength concrete with small drill bit ( Table 4.1, Test 5, and Table 4.2, Test 7) R8.5—Reliability under repeated load ( Table 4.1, Test 6) R8.5.3 Requirement R8.6—Reliability in cracked concrete where crack width is cycled ( Table 4.2, Test 8) |
32 | CHAPTER R9— SERVICE-CONDITION TESTS R9.2— Service- condition tension test with single anchor and with two edges ( corner) ( Table 4.1, Test 7, and Table 4.2, Test 9) R9.2.2 Requirements for critical edge distance R9.3—Service-condition test at minimum edge distance and minimum spacing ( Table 4.1, Test 8, and Table 4.2, Test 10) R9.4—Service-condition shear test for single anchors without spacing and edge effects ( Table 4.1, Test 9, and Table 4.2, Test 11) R9.5—Service-condition, simulated seismic tension tests ( Table 4.2, Test 12) R9.6—Service-condition, simulated seismic shear tests ( Table 4.2, Test 13) |
33 | CHAPTER R11— PRESENTING ANCHOR DATA CHAPTER R13— REFERENCES R13.1— Cited references APPENDIX RA1— REQUIREMENTS FOR NORMALIZATION OF RESULTS RA1.2— Concrete breakout or splitting failure RA1.3—Pullout and pull-through failure APPENDIX RA3— REQUIREMENTS FOR TEST MEMBERS RA3.2— Tests in cracked concrete |
34 | EXAMPLE OF EVALUATION OF A WEDGE-TYPE ANCHOR IN UNCRACKED CONCRETE E1— ANCHOR SPECIFICATIONS E2— TEST RESULTS E3— EVALUATION E3.1—General E3.2—Reference tests in uncracked low-strength concrete E3.3—Reference tests in uncracked high-strength concrete |
35 | E3.4—Reliability tests, reduced installation effort |
36 | E3.5—Reliability tests, large hole diameter E3.6—Reliability tests, small hole diameter E3.7—Reliability tests, repeated load E3.8—Service-condition tests, corner test E3.9—Service-condition tests, minimum edge distance, and spacing E3.10—Service-condition tests, shear tests |
37 | E4— Establishing anchor category E5— Report of anchor data |