All the Little Rocks
This is the ratio of the shoulder of a standard ballast section.
What is 2:1?
103.3(M)a
These must have all pads, insulators, and clips to be considered effective.
What are concrete ties?
213.127.e
If less than this many bolts is found in the end of a joint in CWR, a 15MPH Passenger and 10MPH freight restriction must be placed.
What are 2 bolts?
213.121.f&h
This type of fastener provides longitudinal restraint, reducing the need for rail anchors.*
What are resilient fasteners?
Ballast may not be piled higher than this part of the track structure.
What is the head of the rail?
103.2(M)b
There may not be more than this many inches between the center of effective ties in Class 1 track.
What are 100 inches?
213.109.b.3
Rail end batter is measured this far from the end of the rail.
What is 1/2 inch?
213.117.a
Curves exceeding this degree of curvature require at least 2 plate holding spikes in each conventional tie plate.
What is 1o?
213.127.b
This part of the ballast section provides the most longitudinal holding strength.*
What is the crib section?
To be considered an effective wood tie, this piece of the track structure may not cut through the tie by more than 40%.
What is the tie plate?
213.109.c.4
Upon discovery of an existing torch cut rail, trains may only operate at these speeds.
What is up to 30MPH passenger, 25MPH freight
213.122.b
At least eight of any ten consecutive ties must have tie plates for these classes of track.
What are Classes 3-5?
213.123.a
This ballast defect where ballast has lost the ability to maintain proper drainage and support can be corrected by under-cutting.
What is fouled ballast?
103.4(M)
Class 3 track requires this many effective ties within 48 inches of a joint, if neither is within 18 inches?
What are 2 ties?
213.109.e
An Ordinary Break defect in the rail may be corrected by doing this.
What is applying joint bars?
213.113.2
This distance is required between the bolster shoulder and face of an "e" clip to prevent overdriving.
What is 3/8 inch?
127.2(M)c
This ballast defect, commonly caused by sinkholes or other water erosion, requires a speed restriction of at least 30MPH.
What is insufficient ballast?
213.103.b
What may not be withdrawn into the end of a concrete tie in order for it to remain effective?
What are prestress strands?
213.109.d.1
When joint bars are applied to Transverse Fissure rail defect of 50%, this is the speed trains may operate over the defect AFTER joint bars have been applied.
What is up to 50MPH?
213.113.2
All spikes should be driven with the head pointing toward the rail, except at these locations.
What are all joints?
127.2(M)i