Citation

Raymond GP. Transp. Res. Rec. 1985; 1006: 1-8.

Copyright

(Copyright © 1985, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

Research leading to recommended procedures for ballast selection and grading are presented. The ballast selection procedure is also presented and offers a sequential screening process to eliminate undesirable materials. The procedure classifies the surviving ballasts in terms of annual gross tonnage based on 30 tonne (33 ton) axle loading and American Railway Engineering Association grading No. 4. The effect of grading variation and its effect on track performance is also presented.

Record URL:
http://onlinepubs.trb.org/Onlinepubs/trr/1985/1006/1006-001.pdf

Language: en

Keywords

RAILROAD PLANT AND STRUCTURES; RAILROADS - Research; RAILS - Foundations