trestlework
Supportive beam structure
Trestlework is a structure of trestles—frameworks of vertical, horizontal, and diagonal beams—used to support something above ground level.
The term appears most often in descriptions of railroad bridges spanning valleys or gorges, where wooden or steel trestlework carries the tracks: The train crossed the canyon on aging trestlework.
Arched span crossing valleys
- spanDistance between endpoints
- overpassBridge spanning a road
- crossingPoint where paths intersect
- aqueductChannel conveying water distances
footbridge · cantilever · arch · truss · causeway · deck · bent · pile
Underlying support system
- latticeOpenwork of crossed strips
- skeletonInternal supportive framework
- trussLoad-bearing beam arrangement
- girderMain structural support beam
support · span · grid · substructure · underpinning · armature · load-bearing · structural
Temporary exterior work platform
- frameworkUnderlying support system
- timberWood for construction
- beamsRays or supports
- joistsHorizontal building beams
bracing · erection · assembly · bents · stringers · pilings · carpentry · lumber
Track system for trains
- tracksMarks showing passage
- locomotiveRailway pulling machine
- freightGoods being transported
- gradeClassification by rank
embankment · right-of-way · gauge · ties · rails · ballast · junction · signal
viaduct
Arched span crossing valleys
aqueduct · footbridge · cantilever · arch · truss · causeway · deck · bent · pile · pier
framework
Underlying support system
- latticeOpenwork of crossed strips
- skeletonInternal supportive framework
- trussLoad-bearing beam arrangement
girder · support · span · grid · substructure · underpinning · armature · load-bearing · structural · foundation
scaffolding
Temporary exterior work platform
joists · bracing · erection · assembly · bents · stringers · pilings · carpentry · lumber · planking
railway
Track system for trains
- tracksMarks showing passage
- locomotiveRailway pulling machine
- freightGoods being transported
grade · embankment · right-of-way · gauge · ties · rails · ballast · junction · signal · switchyard
trestleworksolid ground
Stable surface beneath
embankment · earthwork · fill · solid foundation · masonry