Standard No.:	GB/T 50218-2014
Chinese Name:	工程岩体分级标准
English Name:
Professional Classification:	GB National Standard
Issued by:
Issued on:	2014-08-27
Implemented on:	2015-05-01
Status:	VALID
Replace:	GB/T50218-1994
Language:	English
File Format:	PDF
Word Count:
Price(USD):	please email coc@codeofchina.com for quotation
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1.0.1 This Standard is formulated with a view to establish an unified method for evaluating the engineering classification of stability of rock mass; provide necessary basis for investigation, design, construction and authorized personnel quota regarding rock engineering construction.
1.0.2 This Standard is applicable to engineering classification of various rock mass.
1.0.3 Engineering classification of rock mass shall adopt a combination of qualitative and quantitative methods, and be carried out in two steps; first to determine the rock mass basic quality and then, rock mass the class of rock mass by combined with the characteristics of specific works.
1.0.4 The engineering classification of rock mass shall not only comply with this standard, but shall also comply with the provisions specified in related current national standards.