ANSI ALI A14.3-2008

ANSI ALI A14.3-2008

ANSI ALI A14.3-2008

ANSI ALI A14.3-2008 American National Standard (ASC) for Ladders – Fixed – Safety Requirements
American Ladder Institute / 31-Oct-2008 / 38 pages

This ANSI ALI A14.3-2008 standard prescribes minimum requirements for the design, construction, and use of fixed ladders, and sets forth requirements for cages, wells, and ladder safety systems used with fixed ladders, in order to minimize personal injuries. All parts and appurtenances necessary for a safe and efficient ladder shall be considered integral parts of the design.

Contents of ANSI ALI A14.3-2008
7 Ladder Safety System . . . 9
7.1 General Design . . . . . 9
7.2 Safety Factors . . . . . . 9
7.3 Ladder Safety Systems Consisting of a Carrier, Safety Sleeve, and Full Body Harness . . . . . 9
7.4 Ladder Safety Systems of Other Designs . . . . . . . . . . . 10
7.5 Test Methods . . . . . . 10
8 Protective Finishes. . . . . 11
8.1 Metal Ladders . . . . . 11
8.2 Wood Ladders . . . . . 11
8.3 Combined Materials 11
9 Maintenance and Use of Ladders . . . . . . . 11
9.1 General . . . . . . . . . . 11
9.2 Use . . . . . . . . . . . . . 11
9.3 Maintenance. . . . . . . 12
9.4 Ladder Security Systems . . . . . . . . . . . 12
10. Revision of American National Standards Referred to in This Document. . . . 12

Figures ANSI ALI A14.3-2008
Figure 1 Pitch of Fixed Ladders. . . . . . . . . . 13
Figure 2 Length of Climbing 24 ft. or Less. 13
Figure 3 Length of Climbing 24 ft. or Less With Elevated Access. . . . . . . . . . . 14
Figure 4 Single Length of Climb Greater Than 24 ft. . . . . . . . 14
Figure 5 Total Lengths of Climb Greater Than 50 ft. . . . . . . . 15
Figure 6 Support and Ladder Dimension and Side Clearances 16
Figure 7 Rung Ends . . . . . 17
Figure 8 Individual Rung Ladders . . . . . . . . 18
Figure 9 Termination at Floor or Platform. . 18
Figure 10 Terminations at Roof . . . . . . . . . . . 19
Figure 11 Grab Bars. . . . . . 19
Figure 12 General Arrangements for Ladders in Wells . . . . . . . 20
Figure 13 Deflector Plate for Hatch Opening with Reduced Clearance . . . . . . . . 21
Figure 14 Counterbalanced Hatch Cover at Roof . . . . . . . . . . . 21
Figure 15 Minimum Ladder Clearance . . . . . 22
Figure 16 Through Ladder Clearance . . . . . . 22
Figure 17 Example of the General Construction of Cages . . . . 23
Figure 18 Example of a Cage Plan . . . . . . . . 24
Figure 19 Display of Power Grip. . . . . . . . . . 25
Figure 20 Connection Length Between Carrier and Safety Sleeve . . . . . . . . . . . . 25
Figure 21 Dynamic Strength Test, Ladder Safety System, Shown Prior to Release of the Test Weight . . . . . . . . . . . 26
Figure 22 Ladder Guard. . . 27 ANSI ALI A14.3-2008
Comment Form. . . . . . . . . . . 28

File Type Download : PDF File, ANSI ALI A14.3-2008



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