[inglés] Safety standard for wood portable vertical ladders Jurisdicción China Ańo 1988 Publicado en chino Título original / otro título [chino] Yidongshi muzhiti anquan biaozhun Fuente [inglés] 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). Número de referencia GB 7059.1-86 Descriptores [Principales] China, escaleras portátiles, madera [Secundarios] comentario de norma, descripción del material, norma, pruebas del material Categoría Riesgos mecánicos, transporte Resumen [inglés] 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 Número de registro 59526