Statements (18)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
rail profile
|
| https://www.w3.org/2000/01/rdf-schema#label |
bullhead rail
|
| gptkbp:introduced |
19th century
|
| gptkbp:length |
typically 60 feet
|
| gptkbp:maintenance |
requires regular packing and adjustment
|
| gptkbp:manufacturer |
rolling
|
| gptkbp:material |
gptkb:steel
|
| gptkbp:notableFeature |
head and foot of similar size
|
| gptkbp:replacedBy |
flat-bottom rail
|
| gptkbp:shape |
symmetrical head and foot
|
| gptkbp:still_used_on |
heritage railways
|
| gptkbp:used_in |
gptkb:United_Kingdom
gptkb:railway_line chair (railway) wooden sleepers |
| gptkbp:weight |
typically 95 to 110 pounds per yard
|
| gptkbp:bfsParent |
gptkb:Barlow_rail
|
| gptkbp:bfsLayer |
7
|