Tunnel hole-through
http://dbpedia.org/resource/Tunnel_hole-through an entity of type: WikicatTunnels
Tunnel hole-through, also called breakthrough, is the time, during the construction of a tunnel built from both ends, when the ends meet, and the accuracy of the survey work becomes evident. Many tunnels report breakthroughs with an error of only a few inches, for example:
* the 1858 Blue Ridge Tunnel – 6 inches (150 mm)
* the 1944 Blue Ridge Tunnel replacement – 4 feet (1.2 m) - 1944
* the Lötschberg Base Tunnel – 10 cm
* the Holland Tunnel - 1 cm
rdf:langString
rdf:langString
Tunnel hole-through
rdf:langString
Genomslag
xsd:integer
3033808
xsd:integer
989956501
rdf:langString
Tunnel hole-through, also called breakthrough, is the time, during the construction of a tunnel built from both ends, when the ends meet, and the accuracy of the survey work becomes evident. Many tunnels report breakthroughs with an error of only a few inches, for example:
* the 1858 Blue Ridge Tunnel – 6 inches (150 mm)
* the 1944 Blue Ridge Tunnel replacement – 4 feet (1.2 m) - 1944
* the Lötschberg Base Tunnel – 10 cm
* the Holland Tunnel - 1 cm
xsd:nonNegativeInteger
1952
