INFRA
Watching thirteen kilometres of Betuwe freight rail settle, one millimetre at a time
University of Twente fused 170 Sentinel-1 radar scenes with national LiDAR to flag the soft-soil Betuwe freight segments subsiding 30 mm before any survey train.
The Control Layer Dies First: SBB's CHF 280m Bet on Keeping Iltis Alive
SBB pays Siemens up to CHF 280m to keep 30-year-old Iltis alive to 2045 — a lesson in single-vendor lock-in and the certification chain buildings ignore.
What 80,500 km of Roman stone still teaches about design life
80,500 km of Roman stone-paving lasted a millennium because drainage and a named maintenance owner were designed in. What that teaches AEC teams in 2026.
57 Kilometres of Rock, Read as One Fibre: The Gotthard's Digital Twin
How distributed acoustic sensing turns a single fibre into 57 km of strain gauges — and where BIM ends and the Gotthard's decision-making digital twin begins.
The Swiss timetable is a constraint solver in a trench coat
Why scheduling Swiss trains is one of the hardest optimisation problems hiding in plain sight — and how the same PESP math pre-flights your construction site.
Four Bridges, 130 Years Old, Rebuilt for 2150 — The Design Life Nobody Asks You For
Network Rail's four Forest Gate bridges are specified to last until 2150. What a written design life — and a staged replacement sequence — should teach your office.
They Started Digging the Brüttener Tunnel — and the Real Number Is 2037
SBB broke ground on the Brüttener Tunnel: 9km twin-tube, CHF 3.3bn, +30% capacity — arriving 2037. What eleven years of live perimeter means for your desk.
Solar panels between my rails: one year, 11,000 trains, an honest 16 MWh
Sun-Ways ran solar panels between the rails at Buttes for a year: 11,000 trains, 16,000 kWh, no driver glare — and the honest numbers behind the hype.
The Invisible Network: Why the Pipe Under Your Site Decides the Building Above It
Water, sewage and district heating quietly decide the building above. How Paris's Seine cooling network and Q=ṁcdT size the pipe under your site.
