Infrastructure & Engineering
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.
From the Index
Category: Infrastructure & Engineering
Surveying for canals, railroads, tunnels, bridges, and other major works.
Infrastructure & Engineering
Surveying the Panama Canal, Part 2: Control, Excavation, Locks, and the Culebra Cut
The survey control, grades, quantities, alignment, and records behind the canal’s locks, dam, and massive excavation.
Infrastructure & Engineering
Surveying the Panama Canal, Part 1: Finding a Route Between Two Oceans
How reconnaissance, maps, levels, rivers, and competing canal concepts shaped the choice of a route across Panama.
Infrastructure & Engineering
Before Liftoff: Surveying, Control, and Alignment at a Launch Complex
How construction control, structural monitoring, precision alignment, and verification support a rocket before it leaves the pad.
Infrastructure & Engineering
Surveying the Iron Road, Part 3: Curves, Grades, Tunnels, and Rights-of-Way
A field guide to the railroad geometry and records that surveyors created—and still recover—along historic corridors.
Infrastructure & Engineering
Surveying the Iron Road, Part 2: The Transcontinental Railroad and the Geography of a Nation
The surveys, competing routes, mountain passes, land grants, and field crews behind the first transcontinental railroad.
Infrastructure & Engineering
Surveying the Iron Road, Part 1: How Early American Railroads Found a Line
How reconnaissance, profiles, curves, grades, and maps turned proposed railroads into buildable routes.