ANSI ALI A14.2-2007

ANSI ALI A14.2-2007

ANSI ALI A14.2-2007

ANSI ALI A14.2-2007 American National Standard (ASC) for Ladders – Portable Metal – Safety Requirements American Ladder Institute / 20-Aug-2007 / 78 pages

This ANSI/ALI A14.2-2007 standard prescribes rules and establishes minimum requirements for the construction, testing, care, and use of portable metal ladders of various types including, but not limited to, portable extension, step, trestle, sectional, combination, single, and platform laddres. A14.2 also prescribes rules and minimum requirements for labelling.

This ANSI ALI A14.2-2007 standard now includes items covered in A14.10.

ANSI®-ASC A14.2-2007
Revision of ANSI A14.2 2000
American National Standard
for Ladders – Portable Metal – Safety Requirements
Secretariat American Ladder Institute
Approved August 20, 2007 American National Standards Institute, Inc.

Contents of ANSI ALI A14.2-2007
Section Page
1. Scope and Purpose . . . . . . 1
1.1 Scope . . . . . . . . . . . . 1
1.2 Purpose . . . . . . . . . . . 1
2. General . 1
2.1 Rationale . . . . . . . . . . 1
2.2 Application . . . . . . . . 1
2.3 Interpretation . . . . . . 2
2.4 Mandatory and Advisory Provisions . . 2
2.5 Equivalent . . . . . . . . . 2
2.6 Effective Date . . . . . . 2
3. Related Standards . . . . . . 2
4. Definitions and Nomenclature . . . . . . . . . . . 2
5. General Requirements . . . 4
5.1 Flare . . . . . . . . . . . . . 4
5.2 Side Rails . . . . . . . . . 4
5.3 Rung and Step Spacing . . . . . . . . . . . . 4
5.4 Rung Connections . . 4
5.5 Rungs, Steps, and Platforms . . . . . . . . . 4
5.6 Hardware . . . . . . . . . 4
5.7 Burrs, Bolts, Rivets, and Welds . . . . . . 4
5.8 Angle of Inclination . 4
5.9 Plastic Top Caps . . . . 4
6. Specifications . . . . . . . . . . 4
6.1 Stepladders . . . . . . . . 4
6.2 Single and Extension Ladders . . . . . . . 5
6.3 Trestle (Double Front) and Extension Trestle Ladders . . 6
6.4 Platform Ladders . . . 7
6.5 Combination Ladders . . . . . . . . . . . . . 8
6.6 Step Stools (Ladder Type) . . . . . . . . . . 8
6.7 Articulated Ladders . 9
7. Test Requirements . . . . . 10
7.1 General . . . . . . . . . . 10
7.2 Combination Ladder Tests . . . . . . . . . 11
7.3 Single, Extension, Combination, and Articulated Ladder Tests . . . . . . . . 11
7.4 Articulated Ladder Tests . . . . . . . . . . 31

American National Standard ANSI ALI A14.2-2007
vii
7.5 Step, Trestle (Double Front), Extension Trestle, Platform, Combination, Articulated Ladder and Step Stool Tests . . . . . 40
7.6 Labeling Tests . . . . 45
8. Selection, Care, and Use . . . . . . . . . . . . . 45
8.1 General . . . . . . . . . 45
8.2 Selection . . . . . . . . 47
8.3 Rules for Ladder Use . . . . . . . . . . . . 48
8.4 Care . . . . . . . . . . . . 50
9. Labeling/Marking Requirements . . . . . . . 51
9.1 General Requirements . . . . . . . . . . . . 51
9.2 Product Data Information Markings . 51
9.3 Specific Labeling/Marking Requirements . . . . . . . . . . 51
10. Revision of American National Standards Referred to in this Document . . . . 53

Tables of ANSI ALI A14.2-2007
Table 1 Extension Ladder Size . . . . . . . . . . .6
Table 2 Minimum Required Overlap for Extension Ladders . . 6
Table 3 Minimum Required Extension Trestle Ladder Overlap . . . . . . . . . . . . . 7
Table 4 Combination Ladder Size . . . . . . . . 8
Table 5 Horizontal Bending Test Loads . . 11
Table 6 Maximum Allowable Average Deflections for Horizontal Bending Test . . . . . . . . . . . . . 13
Table 7 Deflection Test Loads . . . . . . . . . . 14
Table 8 Deflections and Angles of Twist . 14
Table 9 Simulated In-Use Inclined Load Test . . . . . . . . . . . . 14
Table 10 Hardware Tests . 18
Table 11 Step Bending, Rung Bending, Side-Rail Bending, Compression,and Shear Strength Tests . . . . . . . . . . . . 23
Table 12 Rung Torque Tests . . . . . . . . . . . . 24
Table 13 Maximum Allowable Deflection for Side Sway Test – Midspan Deflection of Lower Side Rail . . . . . . . . 25
Table 14 Static Side-Rail Cantilever Bending Test Load . . . . 26
Table 15 Ladder Section Twist Test . . . . . . 29
Table 16 Foot Slip Test . . 30
Table 17 Articulated Ladder Self-Supported Scaffold Test . . . 31
Table 18 Stability Test Loads . . . . . . . . . . . 36
Table 19 Maximum Allowable Racking Deflection . . . . . . . . 38
Table 20 Static Cantilever Bending Test . . . 41
Table 21 Rail Torsion Test 43
Table 22 Summary of Significant Accident Causes . . . . . . . . 46
Table 23 Ladder Size, Working Length, and Height . . . . . . . . 47

Figures of ANSI ALI A14.2-2007
Figure 1 Horizontal Bending Test . . . . . . . . 12
Figure 2 Deflection Test . 15
Figure 3 Deflection Test Data Sheet . . . . . . 16
Figure 4 Inclined Load Test . . . . . . . . . . . . 17
Figure 5 Column and Hardware Load Test and Single Lock Load Test . . . . . . 17
Figure 6 Standard Loading Block . . . . . . . . 18
Figure 7 Lock Test . . . . . . 19
American National Standard A14.2-2007
viii
Figure 8 Lock Tip Load Test . . . . . . . . . . . . 20
Figure 9 Cyclic Rung Lock Test Arrangement . . . . . . . . . . . . 21
Figure 10 Rung Lock Testing Cycle . . . . . . . 22
Figure 11 Rung Bending Test and Rung-to-Side-Rail Shear Strength Test . . . . . 22
Figure 12 Rung Torque Tests . . . . . . . . . . . . . 24
Figure 13 Side Sway Test . . 26
Figure 14 Static Side-Rail Cantilever Bending Test . . . . . . . . . 27
Figure 15 Side-Rail Cantilever Dynamic Drop Test . . . . . . . . . 28
Figure 16 Ladder Twist Test (Single, Extension, or Articulated Ladders) . . . . . . 29
Figure 17 Foot Slip Test . . . 30
Figure 18 Scaffold Bending Strength Test . . . 32
Figure 19 Compression, Step Bending, Side-Rail Bending, and Step-to-Side-Rail Shear Tests . . . 34
Figure 20 Methods (Other Than Dead Weight) for Applying Test Loads . . . . . . . 35
Figure 21 Front, Side, and Rear Stability Tests . . . . . . . . . . . . . 37
Figure 22 Torsional Stability and Rail Torsion and Spreader Tests . . . . . . . . . . . 39
Figure 23 Racking Test . . . 40
Figure 24 Rail Static Cantilever Test . . . . . . . 42
Figure 25 Dynamic Drop Test . . . . . . . . . . . . 43
Figure 26 Stepladder Slip Test . . . . . . . . . . . . 44

Appendixes of ANSI ALI A14.2-2007
Appendix A Format of Design and Color for Primary Hazard Danger and Caution Labels/Markings . . . . . . . . . . . . . 55
Appendix B Format of Design and Color for the Safety First and Notice Labels/Markings . . . . . . . 56
Appendix C Marking Classification . . . . . . . . . 66
ANSI ALI A14.2-2007 Comment Form . . 67
Markings
Marking No. 00 – All Ladders . . . . . . . . . . . . . 57
Marking No. 1 – Step, Platform and Combination Ladders . . . . 58
Marking No. 2 – Step, Trestle (Double Front) and Platform Ladders . . . . . . . . . . . 58
Marking No. 3 – Step, Trestle (Double Front) and Combination Ladders . . . . . . . 58
Marking No. 4 – Step Ladders . . . . . . . . . . . . . 59
Marking No. 5 – Extension, Combination, Articulating Ladders 59
Marking No. 6 – Extension, Extension Trestle, Combination and Articulating Ladders . . . . . . . . . . 60
Marking No. 7, 8 – Extension, Extension Trestle and Combination Ladders . . . . . 60
Marking No. 9 – Extension Ladders . . . . . . . . 60
Marking No. 10 – Extension Ladders . . . . . . . 61
Marking No. 11, 12 – Step Stools . . . . . . . . . . 61
Marking No. 13 – Trestle Ladder (Double Front Ladder), Extension Trestle . . . . . 62
Marking No. 14 – Trestle Ladder (Double Front Ladder) . . . . . . 62
Marking No. 15 – Extension Trestle Ladder . . 63
Marking No. 16, 17 – Combination Ladders . . 63
Marking No. 18 – Platform Ladder . . . . . . . . . 64
Marking No. 19, 20 – Articulated Ladder . . . . 64
Marking No. 21, 22 – Articulated Ladder . . . . 65
Marking No. 23 – All Ladders . . . . . . . . . . . . . 65
Marking No. 24 – Step, Trestle, Platform Ladders . . . . . . . . . . . 66

File Type Download : PDF File, ANSI ALI A14.2-2007



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