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NewTen 3D engineering labs are now in Civlso

The civil engineering workspace that shows its work.

Learn the concept, work the problem, see exactly where it went wrong — across eighteen subjects, built for the FE exam.

3D labHydroControl GameBuildWorks
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18subjects
103D labs
4-stepstudy loop
Structural load path · interactive lesson

See where the load actually goes.

A centered 24 kN load enters this truss. Explore the applied load, follow the support reactions, and connect the equilibrium equation to the structure.

Continue in Civlso Explore subjects
Pedestrian bridge · Load path study INTERACTIVE
24 kN R_A = 12 kN R_B = 12 kN
Select each view to follow the load through the structure. Progress 0 of 3.
0/3
START HERESelect each view to follow the load through the structure.
Subjects

Eighteen subjects. One loop that makes them stick.

Every subject follows the same path — learn, work, apply, recall — so you always know what to do next. CAD and Survey use a deeper six-stage version of it.

01

Bernoulli fluids

Pressure, velocity, and head loss across pipe systems.

02

Soil mechanics

Classification, effective stress, and bearing capacity.

03

Traffic safety

Sight distance, signal timing, and geometric design.

04

Leak detection

Trace pressure drops and diagnose pipe network faults.

05

Beam analysis

Reactions, shear and moment diagrams, and deflection.

06

Concrete mix design

Water-cement ratio, strength targets, and durability.

07

Structural Analysis

Load paths and support reactions across trusses and frames.

08

Hydrology

Rainfall, runoff, and peak flow with the Rational Method.

09

CAD

Lot lines and setbacks, drafted from bearings and distances.

10

Survey

Traverses and elevations, closed, checked, and adjusted.

11New

Steel Design

Tension members, bolts, welds, columns and beams, checked limit state by limit state to AISC 360.

12New

Water & Environment

Rain to river: NRCS runoff, open channels, pipes and pumps, wells, water quality and treatment for one town.

13New

Transportation Design

One road from sight distance to curves, pavement and level of service.

14New

Construction & CPM

One culvert project from estimate to schedule: takeoff, crews, CPM and float, earned value, earthwork and temporary works.

15New

Math & Statistics

The maths the FE asks for, on data from Civlso's own lab benches: trig, calculus, vectors, and statistics from cylinder breaks and spot speeds.

16New

Engineering Economics

One city's choice between two pumps: interest factors, present and annual worth, rate of return, benefit-cost and depreciation.

17New

Dynamics

Things that move on a site: a crate on a ramp, a crane hook, a pile hammer, through kinematics, F = ma, work-energy and impulse.

18New

Ethics & Practice

Licensure, seals, conflicts and contracts through short first-year cases where two answers look right and only one follows the rules.

Structures & Materials4
  • Beam analysisReactions, shear and moment diagrams, and deflection.
  • Structural AnalysisLoad paths and support reactions across trusses and frames.
  • Steel DesignTension members, bolts, welds, columns and beams, checked limit state by limit state to AISC 360.
  • Concrete mix designWater-cement ratio, strength targets, and durability.
Water & Fluids4
  • Bernoulli fluidsPressure, velocity, and head loss across pipe systems.
  • HydrologyRainfall, runoff, and peak flow with the Rational Method.
  • Leak detectionTrace pressure drops and diagnose pipe network faults.
  • Water & Environment NewRain to river: NRCS runoff, open channels, pipes and pumps, wells, water quality and treatment for one town.
Geotech & Site3
  • Soil mechanicsClassification, effective stress, and bearing capacity.
  • SurveyTraverses and elevations, closed, checked, and adjusted.
  • CADLot lines and setbacks, drafted from bearings and distances.
Transportation2
  • Traffic safetySight distance, signal timing, and geometric design.
  • Transportation Design NewOne road from sight distance to curves, pavement and level of service.
Construction & Practice3
  • Construction & CPM NewOne culvert project from estimate to schedule: takeoff, crews, CPM and float, earned value, earthwork and temporary works.
  • Engineering Economics NewOne city's choice between two pumps: interest factors, present and annual worth, rate of return, benefit-cost and depreciation.
  • Ethics & Practice NewLicensure, seals, conflicts and contracts through short first-year cases where two answers look right and only one follows the rules.
Foundations2
  • Math & Statistics NewThe maths the FE asks for, on data from Civlso's own lab benches: trig, calculus, vectors, and statistics from cylinder breaks and spot speeds.
  • Dynamics NewThings that move on a site: a crate on a ramp, a crane hook, a pile hammer, through kinematics, F = ma, work-energy and impulse.
How it works

You do the work. Civlso shows where it broke.

01

Learn

A readable explanation before the first problem.

02

Work

Practice with checks on the exact step that broke.

03

Apply

Run it in a 3D lab and watch the numbers move.

04

Recall

Bring it back under pressure in FE Exam Studio.

Feedback on the step that broke

Not just “wrong.” Civlso checks reactions, units and equilibrium so you see where the solution went off track.

✓ ΣF_y = 0✓ Units: kN·m⚠ Check lever arm

FE Exam Studio

Timed, exam-style practice that pulls from everything you've studied.

FE

3D labs & games

Run a dam, stage a bridge build, retime a corridor.

A coach that explains

Ask why, not just what. The Learning Coach walks through the reasoning with you.

Notes you chose to keep

Save a highlight, a calculation or a coach answer — curated, never automatic.

Labs & games

Ten 3D labs. Real models, not animations.

Every lab runs in the browser, saves your progress and exports your record.

HydroControl 3D dam operations labHydroControl 3D dam operations labWater resourcesHydroControlFour operating scenarios · free play
BridgeSite construction sequencing labBridgeSiteSeven construction phases
TrafficFlow signal timing labTrafficFlowFour corridor missions
SlopeSafe slope stability labSlopeSafe slope stability labSlopeSafeInfinite-slope challenges
LoadPath Lab structural behaviour labLoadPath Lab structural behaviour labLoadPath LabBeams, stiffness, bracing

Plus Stormwater City, SurveyShift, GroundLab, PipeWorks and BuildWorks.

Research

Find the papers behind the problem.

Research Atlas maps civil-engineering papers as a 3D star field and starts from your question: the papers that match, what to read first, what to check before you cite.

Research Atlas · Civil Engineering Citation Atlas
Research Atlas star map with a research question and a suggested reading path
Paper · reading card
Research Atlas reading card showing why a paper matches the question and what to check before citing it
  • Starts from your question64 papers, nine communities. Your question picks the matches and a reading path.
  • Honest about every linkVerified citations are kept apart from keyword guesses, and each paper says whether its DOI was checked.
  • Case files and an evidence boardReal failures with official sources, and a board for your evidence.
Pricing

Start free. Upgrade when the exam gets close.

Core learning stays useful for free — Pro and Founder unlock the full workspace.

Semester Pass
$49.99
One-time · no auto-renewal
  • Learn/Practice/Coach for up to 4 subjects
  • Solve + Expanded Read on every subject
Get Semester Pass
Founder
$199
One-time · lifetime*
  • Everything in Pro, lifetime*
  • Unlimited metered usage when unified usage is active
  • Early-access + suggestion board
Become a Founder

*Lifetime access is a personal, non-transferable license tied to your Civlso account — see Terms for details.

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Start free · no card How it works