A-A-52163B
2.2.2 Dimensional tolerances. Unless otherwise specified, the dimensions specified in figures 1 thru 9 shall have the following tolerances:
a. For dimensions less than or equal to 10 mm, tolerances shall be ±0.4 mm and
±1 degree (0).
b. For dimensions greater than 10 mm and less than or equal to 100 mm, tolerances shall be
±0.8 mm and ±10.
c. For dimensions greater than 100 mm, tolerances shall be ±2 mm and ±1°.
2.3 Weight. The total weight of any ladder shall not exceed 18 kilograms (kg) [40 pounds (lb)].
2.4 Load. Each step of every ladder shall be capable of withstanding a 360 kg (800 lb) load without damage or permanent set to any of the ladder parts.
2.5 Welding. Welding procedures shall be performed in accordance with the manufacturer's standards for welds. In no event shall processes such as peening and plugging be used for reclaiming any part of the ladder without authorization from the procuring activity. Warpage shall be limited to 6.4 millimeters (mm) [0.25 inches (in)] out of plane. There shall be no lack of fusion which causes failure.
2.5.1 Welded surfaces. All welded parts shall be clean and free of dirt, sand, scale, and other extraneous materials. The welded surfaces shall be free of burrs, cracks, and inclusions. All sharp corners shall be rounded or beveled, except for those on the non-skid step surfaces.
2.6 Non-skid surfaces. All steps shall be constructed of material which has been formed in a manner to provide for a permanent non-skid surface.
2.7 Coatings. The ladders shall be cleaned, pretreated, primed, and painted in accordance with the accepted commercial standard practice. Unless otherwise specified (see 6.2), the base topcoat color shall be green 383, chip number 34094 of FED-STD-595. If CARC paint or camouflage patterns are required, it will be specified in the contract or order (see 6.2).
2.8 Warning labels. Ladders shall have warning labels that contain "Danger" markings in accordance with appendix A of ANSI 14.2, warning personnel that the ladder will conduct electricity. The label design and color shall conform to this standard.
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