NFPA 1931-2020 Standard for Manufacturer’s Design of Fire Department Ground Ladders

NFPA 1931-2020 Standard for Manufacturer’s Design of Fire Department Ground Ladders. 5.1.4 Ladder accessories shall not cause the ladder to be unbalanced. N 5.1.5 Accessories shall meet all of the requirements in this chapter and be certifed by the manufacturer of the accessory. N 5.1.6 Manufacturers of ladder accessories shall list all ladders for which their accessories have been approved for use by the accessory manufacturer. N 5.1.7 The use of ladder accessories other than those on the ladder accessory manufacturer’s approved list shall not be permitted. N 5.1.8 Ladder accessory manufacturers shall provide service and use instructions for their products, including recommen‐ ded preventive maintenance checks and schedules and installa‐ tion and removal instructions. N 5.1.9 Ladder accessories shall conform to the appropriate sections of ANSI-ASC A14.8, American National Standard for Ladders — Safety Requirements for Ladder Accessories. N 5.1.10 Construction of ladder accessories shall meet the requirements of 4.1.3.1 and 4.1.3.2. N 5.1.11 Ladder accessories shall not use metals that cause elec‐ trolytic action. N 5.1.12 Ladder accessories shall not compromise duty rating (see Table 4.1.1). N 5.1.13 Ladder accessories shall display markings for applicable tests. N 5.1.14 Ladder accessories shall not interfere with, obstruct, or compromise any tests required by this standard and NFPA 1932. N 5.1.15 A ladder accessory found to be defective or damaged shall be removed from service until repaired or replaced in accordance with the accessory manufacturer’s instructions. N 5.1.16 A ladder compromised by accessory damage shall be tagged as out of service (OSS) until inspected and found in compliance with Chapter 6 of NFPA 1932. N 5.1.17 Temporary repairs of compromised ladders shall not be permitted (see 6.2.2 of NFPA 1932). N 5.1.18 If a ladder accessory(ies) is installed on an existing NFPA-approved ladder, service testing in accordance with Chapter 7 of NFPA 1932 shall be permitted to be performed without removing the installed ladder accessory(ies) or compromising the ladder’s performance. 6.2 Single, Extension, and Combination Ladder Design Verif‐ cation Tests. 6.2.1 Horizontal Bending Tests. 6.2.1.1 The ladder shall be positioned for testing and shall be tested as shown in Figure 6.2.1.1. 6.2.1.1.1 The ladder shall be placed in a fat, horizontal posi‐ tion and supported 150 mm (6 in.) from each end of the ladder. 6.2.1.1.2 When extension and combination ladders are tested, the ladder shall be extended to the maximum extended length with pawls engaged. 6.2.1.2 Auxiliary means shall be...