AASHTO R 21 : 1999
Superseded
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
PRACTICE FOR DRILLING FOR SUBSURFACE INVESTIGATIONS-UNEXPECTEDLY ENCOUNTERING SUSPECTED HAZARDOUS MATERIAL
Available format(s)
Hardcopy , PDF
Superseded date
16-08-2015
Superseded by
Language(s)
English
Published date
01-01-2013
DocumentType |
Standard
|
Pages |
9
|
PublisherName |
American Association of State Highway and Transportation Officials
|
Status |
Superseded
|
SupersededBy | |
Supersedes |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.