FORMS FOR SPECIFICATIONS, ETC., FOR ROAD MATERIALS. 3 



In the standard forms of specifications such tests as are considered 

 necessary have been included, but, as a rule, specific test limits have 

 not been recommended, owing to recognition of the fact that no one 

 set of test limits could cover satisfactorily the wide differences in 

 methods of construction, available materials, and local conditions 

 peculiar to the various parts of the country. It is expected that 

 engineers who adopt the recommended forms of specifications will 

 insert such test limits as they consider advisable for any given work. 



Under standard methods of testing references only are given for 

 description of tests which are published in readily available form. 

 This is also true of the methods of sampling. 



Logan Waller Page, 

 Director Office of Public Roads and Rural Engineering. 



