AREMA has a specifcation for Railroad Track Stabilization. It is broken down by Typical Weight. Those weights consist of Regular (12 oz), Heavy (16 oz), and Extra Heavy (20 oz). Below is a guide to help you determine which US Fabrics products are required for the AREMA project you are bidding. Please do not hesitate to call us should you have any questions and always double check the specification against our product properties. Specifications often change without notice or can be modified to be project specific.