AS O57-1949
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
Grading rules for sleepers for 24-in. gauge railway track (sugar cane industry)
Hardcopy , PDF 1 User , PDF 3 Users , PDF 5 Users , PDF 9 Users
30-06-2017
English
01-01-1949
General provisions are included for limits of accuracy, equivalent defects, seasoning allowance, cutting, and dimensions. Sizes and grade descriptions are specified for squared sleepers and round-back sleepers.
Important note : All end users must be registered with an Account prior to user licenses being assigned.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.