Safety standard for wood portable vertical ladders Jurisdiction China Year 1988 Published in Chinese Original/other title [Chinese] Yidongshi muzhiti anquan biaozhun Source In: Reference Collection of National Occupational Safety and Health Standards 1985-1986, China Standards Publishing Co., Beijing, China, Apr. 1988, p.651-661. Price: CNY 11.00 (whole volume). Serial number GB 7059.1-86 Descriptors [Primary] China, portable ladders, wood [Secondary] comment on standard, description of equipment, equipment testing, standard Subject category Mechanical hazards, transport Abstract This standard (effective 1 Oct. 1987) applies to portable wood ladders used in temporary work at height. It specifies the quality of wood; structure, standard measurements, test methods and labelling of the ladders. Experimental data on the effect of wood quality on its strength, theoretical bases for determining parameters of the ladders, and results of tests on locally made ladders are included in an appended commentary. CIS No. 93-38 Database ID 59526