Featured Story
Surveying the Panama Canal, Part 3: Measuring a Living Canal
How hydrography, deformation monitoring, as-builts, and modern geospatial control support an operating and expanding canal.
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The surveying behind the things people build and maintain: roads, railways, bridges, canals, buildings, utilities, tunnels, dams, and launch complexes.
7 articles
Featured Story
How hydrography, deformation monitoring, as-builts, and modern geospatial control support an operating and expanding canal.
Read ArticleThe survey control, grades, quantities, alignment, and records behind the canal’s locks, dam, and massive excavation.
How reconnaissance, maps, levels, rivers, and competing canal concepts shaped the choice of a route across Panama.
How construction control, structural monitoring, precision alignment, and verification support a rocket before it leaves the pad.
A field guide to the railroad geometry and records that surveyors created—and still recover—along historic corridors.
The surveys, competing routes, mountain passes, land grants, and field crews behind the first transcontinental railroad.
How reconnaissance, profiles, curves, grades, and maps turned proposed railroads into buildable routes.