67 studios · 435+ calculations · 5 design codes
Civil engineering you can move.
Interactive studios and design calculations for structures, ground, bridges, water and roads. Drag a load or change a dimension and watch the drawing, the forces and the code checks respond — then export drawings, reports and Excel with live formulas.
- AS
- ACI
- AASHTO
- BNBC
- BS
67interactive studios
435+design calculations
231lab demos
43structure estimators
18construction forms
Explore
Start from your discipline
Every discipline gathers its studios and its calculations in one place.
Structural
Steel, concrete, timber and masonry members and frames, loads, connections, slabs, prestressing and retrofit.
- Drawing to modelUpload a plan (DXF, CAD PDF, scan or photo): columns, beams, walls and slabs read automatically…
- 3D FrameModel 3D frames, trusses and buildings: joints, members, sections, releases, supports, load…
- BNBC 2020 BuildingRC moment-frame buildings to the Bangladesh National Building Code 2020: earthquake and wind…
- RC MemberReinforced concrete beams and columns to AS 3600: flexure, shear, torsion, crack control and…
- ColumnAny concrete or composite column section: section designer with bars and steel shapes, P–M–M…
- Concrete technologyMix design, aggregate grading, exposure and durability, strength gain and maturity, mass-pour…
- Detailing & Bar ScheduleReinforcement detailing of beams, columns and walls to AS 3600: development and lap lengths…
- SlabTwelve floor systems — flat plate, drop panels, waffle, post-tensioned flat plate and band…
- MasonryBlock and brick walls to AS 3700: compression with slenderness, vertical and horizontal…
- Temporary WorksFormwork, falsework and scaffolding to AS 3610 and AS/NZS 1576, with CIRIA 108 form pressures…
- Tilt-up & PrecastTilt-up and precast wall panels through their life: lifting inserts and panel stresses…
- Steel ConnectionBase plates and anchors, bolted moment end plates, fin plates, bolt and weld groups to AS 4100…
- Wind & Earthquake LoadsAS/NZS 1170.2 wind speeds, pressures and roof zones, AS 1170.4 spectrum, EDC and base shear…
- Frame & beamBeams, inclined and portal frames, trusses: N, V, M, deflection, influence…
- Steel structureDraw a steel frame, analyse and auto-size it to AS 4100, then design connections, base plates…
- Timber structureDraw a timber frame or truss, analyse, design to AS 1720.1, auto-size, estimate and draw…
- Silo & tankGrain, food and cement silos, API 650 tanks and LPG vessels: pressures, hoppers, shells, wind…
- PrestressingPretensioned and post-tensioned beams, multi-storey post-tensioned frames, prestressed girder…
- Retrofit & façadeCondition testing and interactive defect mapping, FRP flexure, shear and column wraps…
CalculationsSteelConcreteTimberMasonryAnalysis & loadingTemporary works & siteUtilities
Geotechnical
Foundations, piles, retaining walls, slopes, in-situ tests, ground improvement, finite elements and seismic hazard.
- FoundationThirteen foundation types: pad, strip, combined, strap and ring footings, flexible rafts, rigid…
- Reactive Site & SlabResidential site classification to AS 2870 from shrink–swell tests (ys, Class A to E and P) and…
- Slope StabilityLayered slopes, cuttings and embankments by the method of slices: Bishop, Spencer, Janbu and…
- Rock engineering (slopes & rock mass)Rock mass classification (RMR, Q, GSI), Hoek–Brown strength, an interactive stereonet with…
- Borehole & strataBorehole logs, geological sections, site plan, 3-D ground model; Excel, PDF…
- CPTCPTu interpretation, SBT charts, parameters, CPT/SPT/Vs liquefaction, piles, footings and…
- SPTSPT corrections, soil lab tests, liquefaction, footings and every pile type — precast, PHC…
- Geotechnical laboratoryTwenty-eight soil and rock laboratory tests to AS 1289 / AS 4133 and ASTM with A4 test…
- Piles (lateral & axial)3D finite element and spring analysis, lateral p-y and axial t-z analysis, structural design…
- Retaining & sheet-pile wallsSteel, combi, precast and segmental precast sheet piles, secant and soldier piles, diaphragm…
- Diaphragm walls (D-walls)Diaphragm walls from panel layout to the last pour: trench stability under bentonite or…
- Soil Nail & Ground AnchorSoil nail walls (nail forces, pullout, tension, facing and global stability), ground anchors…
- Dewatering & ExcavationConstruction dewatering by wells, drawdown contours and inflow, excavation base uplift, piping…
- Embankment on Soft ClayStaged embankments on soft clay: settlement and time with vertical drains, undrained strength…
- Ground improvement & reclamationPVD and surcharge, vacuum, sand compaction piles, stone columns, deep mixing, rigid inclusions…
- Geocell & geosyntheticsGeosynthetics for roads — haul roads, working platforms, separation, reinforced pavements…
- Geotrix FEM (finite elements)2D finite-element analysis: tunnels, diaphragm and sheet-pile walls, footings, embankments…
- Seismic hazard (PSHA)Probabilistic and deterministic seismic hazard: catalogue, sources, ground motion, logic tree…
- Geotechnical MonitoringInstrument readings against trigger levels: settlement plates with Asaoka and hyperbolic…
CalculationsFoundationsRetaining & slopesGround engineeringSite investigationTemporary works & site
Bridges
Girder bridges, moving loads and influence lines, bearings, piers and abutments.
- Bridge design (all types)Every bridge type — girder, slab, box, truss, arch, cable-stayed, suspension, integral and…
- BridgeA truck drives a 1–3 span girder bridge: moment, deflection, reactions and…
- PrestressingPretensioned and post-tensioned beams, multi-storey post-tensioned frames, prestressed girder…
- Frame & beamBeams, inclined and portal frames, trusses: N, V, M, deflection, influence…
CalculationsBridgesAnalysis & loading
Water & maritime
Water and wastewater treatment, supply networks, sewers, stormwater, open channels, wharves and breakwaters.
- Water & wastewater treatment plantPhased water and wastewater treatment plants: demand growth and modules, process design…
- Water network (supply)Water distribution networks: gradient-method hydraulics, 24-hour simulation with tanks and…
- Sewer DesignGravity sewer reticulation: equivalent population, ADWF, PDWF and PWWF, Colebrook–White…
- Buried pipes & trenchlessBuried pipes and trenchless crossings: soil and traffic loads, flexible pipe deflection and…
- Stormwater & DrainageRational-method pit and pipe networks with HGL and pipe sizing, culverts by FHWA HDS-5 and…
- ChannelSluice gate, water surface profile and hydraulic jump with moving…
- Jetty & wharfOpen piled wharves, T-head jetties, dolphins, pontoons, timber jetties and quay walls to AS…
- Breakwater designRubble-mound, armour-unit, crown-wall, berm, caisson, submerged, piled and floating…
CalculationsHydraulics & drainage
Roads & tunnels
Road alignment and earthworks, pavement design, tunnels and shafts.
- RoadRoad design and analysis: alignment, sight distance, earthworks, pavement, drainage…
- Pavement designFlexible, full-depth asphalt, sealed granular and concrete pavements: traffic and axle spectra…
- Tunnels & shaftsTBM, NATM, cut-and-cover and microtunnels with shafts: face stability, settlement and building…
CalculationsPavements & traffic
Construction & cost
Programmes, estimates, site forms and plant on site.
- Onsite yardCrane pile driving, bored piling and crane lifts, animated and to…
- FormsRFI, ITP, NCR, SWMS, pile records and site diary, signed and…
- Project planning (CPM)Enterprise-grade scheduling: multiple calendars, every constraint and activity type, progress…
- Contract administrationContract administration: progress claims with retention, payment schedules and…
- Crane lift planningMobile, crawler and tower cranes: crane selection, load charts, boom and radius, site plan with…
- Site logistics & swept pathsSite logistics plans by stage: hoardings, gates, sheds and laydown, design-vehicle swept paths…
- Estimating43 whole structures: design checks, schematic drawings and live-formula…
CalculationsTemporary works & site
Drawing & documents
Sketch to a dimensioned drawing, PDF markup and takeoff, and a PDF editor.
- Report (project report)Write the whole project's design analysis and estimating report: send results from any studio…
- Paint (drawing & painting)A painting, drawing and doodling app in the browser: 39 pressure brushes including doodle…
- Construction illustrationsCut-away 3D illustrations of how foundations, retaining walls and ground works are built…
- Sketch to drawingDraw freehand; get a dimensioned engineering drawing, live frame analysis, PDF and…
- Calc canvas (worksheets)Unit-aware engineering calculations on A4 pages — type anywhere, units checked and converted —…
- Markbeam markup & takeoffFull-window PDF markup and takeoff: smart areas traced from the drawing, symbol auto-count…
- PDF editor & converterEdit PDFs, fill and sign, redact, organise, combine and split pages, convert PDF ↔ Word / Excel…
Featured
Newest and most complete studios
Hover a card — every drawing is live.
GeotechnicalRock engineering studioRock mass classification (RMR, Q, GSI), Hoek–Brown strength, an interactive stereonet with kinematic analysis, planar and 3-D wedge stability, rock bolts, rockfall trajectories, rock sockets, footings on rock and blastingOpen studio InfrastructureBridge design studioEvery bridge type — girder, slab, box, truss, arch, cable-stayed, suspension, integral and culvert — for road, rail and pedestrians: frame analysis, influence lines, stay and cable forces, modes, seismic, member design, 3D, drawings and costOpen studio InfrastructureWater network studioWater distribution networks: gradient-method hydraulics, 24-hour simulation with tanks and pumps, fire flow, pipe sizing, storage, surge, thrust blocks, quantities and drawingsOpen studio Structural3D Frame StudioModel 3D frames, trusses and buildings: joints, members, sections, releases, supports, load cases, floor and wind loads, combinations, 3D stiffness analysis, P-Δ, modal, AS 4100 / AS 3600 design, member selection, command file, drawings and calculation sheetsOpen studio GeotechnicalGeotrix FEM2D finite-element analysis: tunnels, diaphragm and sheet-pile walls, footings, embankments, slopes, shafts, piles and reinforced soil — staged construction, groundwater flow and safety factorsOpen studio GeotechnicalPile studio3D finite element and spring analysis, lateral p-y and axial t-z analysis, structural design, construction of every pile type, PIT/CSL/TIP, PDA and load testsOpen studio
How it works
One workflow, every studio
1Model
Sketch, drag or type a few dimensions — it is drawn to scale as you go.
2Analyse
Stiffness frames, earth pressure, hydraulics, moving loads and finite elements, solved live.
3Check
Pass or fail against AS, ACI, AASHTO, BNBC or BS — with the reason when it fails.
4Deliver
A3 drawing sets, PDF calculation sheets, JSON projects and Excel with live formulas.
On site
The yard: crane, pile and drill
Plant to scale — pick a mode and watch it work.
Also here
Forms, estimates and the lab
Construction & costEstimating studio43 whole structures: design checks, schematic drawings and live-formula workbooksOpen studio Construction & costForms studioRFI, ITP, NCR, SWMS, pile records and site diary, signed and registeredOpen studio TeachingInteractive lab231 hands-on demos by discipline: Mohr circles, flow nets, buckling, moving loads, hydraulic jumpsOpen studio
“Engineering is the art of modelling materials we do not wholly understand, into shapes we cannot precisely analyse, so as to withstand forces we cannot properly assess, in such a way that the public has no reason to suspect the extent of our ignorance.”— attributed to Dr A. R. Dykes, 1946
Membership
Free to explore. Pro to deliver.
Free
A$0
- Every calculation and studio on screen
- 20 downloads a month
Pro
A$19 / month
- Unlimited downloads
- PDF drawing sets and analysis reports
- Estimate workbooks and AGS4