SS 30-1999现行
SPECIFICATION FOR Manhole tops and surface-box tops
出版：SG-SPRING SG
专家解读视频
基本信息
标准编号： SS 30-1999
出版单位：SG-SPRING SG
标准页数：0
标准简介
This Singapore Standard specifies requirements for manhole tops and surface-box tops with a clear opening up to and including 1000 mm, for installation within areas subjected to pedestrian and / or vehicular traffic.\nThe purpose of this standard is to establish definitions, grades, materials, design and testing requirements and marking of manhole tops and surface-box tops.\n
