Learn by level
Every topic is tagged, so you can start where you are.
Subjects
Engineering Mechanics
Forces, equilibrium, friction and motion: the language every other civil subject is written in.
2 written · 15 topicsStrength of Materials
How solid members stretch, bend, twist and buckle under load.
3 written · 17 topicsStructural Analysis
Finding the forces and movements inside a structure before it is designed.
2 written · 16 topicsReinforced Concrete Design
Designing reinforced concrete members. Codes are cited by number and clause, never reproduced.
2 written · 17 topicsSteel Design
Design of hot-rolled and built-up steel members and connections.
1 written · 15 topicsPrestressed Concrete
Putting concrete into compression before it is loaded.
1 written · 9 topicsEarthquake Engineering
How ground shaking loads structures and how they are detailed to survive it.
1 written · 12 topicsConcrete Technology
Ingredients, mixing, placing, curing and testing of concrete.
3 written · 14 topicsBuilding Materials
Bricks, stone, cement, lime, timber, steel, glass and the newer materials.
1 written · 11 topicsBuilding Construction
How buildings are put together, from setting out to finishes.
1 written · 11 topicsEngineering Geology
Rocks, soils and the processes that shape a site.
1 written · 9 topicsSoil Mechanics
How soil carries load, holds water and settles.
3 written · 14 topicsStructures library
Components and materials
Barriers, bearings, pipes, cements and more: how each works and fails.
Featured projects
Sabarmati bullet-train river bridge
How the high-speed rail viaduct crosses the Sabarmati: foundations in the riverbed, piers, then spans placed on top.
Atal Tunnel, Rohtang
A single-tube road tunnel under the Pir Panjal that keeps a mountain valley reachable through winter.
Bhupen Hazarika Setu: a 9.15 km bridge over a moving river
Long river bridges in Assam must cope with a channel that shifts every monsoon. This film walks through how.
Kolkata's underwater metro beneath the Hooghly
Twin tunnels bored under a tidal river, and how water is kept out.
Latest news
Chennai Metro double-decker viaduct
Two decks on one set of piers: a road layer and a metro layer.
2,150+ wildlife crossing structures on national highways
Underpasses and overpasses that let animals cross highways safely.
12 industrial nodes, Rs 28,602 crore
A national plan for planned industrial cities along freight routes.
Tools and calculators
Learning calculators that run in your browser.
CPM scheduler
Enter activities, durations and predecessors; get early/late times, float and the critical path.
Earned value calculator
PV, EV, AC and BAC to CV, SV, CPI, SPI, EAC, ETC and VAC.
Earthwork volume
Volumes from cross-section areas by average end area and prismoidal formula.
Concrete mix proportions (learning only)
Absolute-volume batching from your chosen water content, w/c ratio and aggregate split. Not a design.
Watch on YouTube
Sabarmati bullet-train river bridge
How the high-speed rail viaduct crosses the Sabarmati: foundations in the riverbed, piers, then spans placed on top.
Atal Tunnel, Rohtang
A single-tube road tunnel under the Pir Panjal that keeps a mountain valley reachable through winter.
Bhupen Hazarika Setu: a 9.15 km bridge over a moving river
Long river bridges in Assam must cope with a channel that shifts every monsoon. This film walks through how.
Kolkata's underwater metro beneath the Hooghly
Twin tunnels bored under a tidal river, and how water is kept out.
Why concrete roads have lines every 4.5 metres
The long version: joint spacing, dowels and tie bars.
Why Switzerland built the Gotthard Base Tunnel
A flat route under the mountains for freight and passengers.