WorldPaveAI GIS/BIM

Road alignment, curves, sections, profile, drainage, 3D and BIM export

New project

Project steps: from site to DPR report

Work down the steps. Section 3 brings in the pavement design from WorldPaveAI (app step 1); section 10 opens the DPR (app step 4) with everything filled in.

1. Site location

Example locations

2. Road alignment

Start chainage (km+m)

Drag a point to move it. Right-click a point to delete it.

Import KML, GPX, CSV, GeoJSON or LandXML (alignment, curves, spirals and profile from Civil 3D, OpenRoads or Novapoint), or drop the file on the map. CSV needs Latitude and Longitude columns in decimal degrees; a Chainage column is optional. Download sample CSV

Horizontal curves

Fit curves at the alignment points Transition curves (clothoid spirals)

Design speed (km/h) Terrain Road setting Max superelevation % (blank = standard) Snow-bound hill road (India)

Superelevation pivot, all curves

Setting-out every

Automatic radius: the largest that fits between the points with full transitions, up to 3 times the minimum. Transition length: the larger of the comfort and superelevation lengths. Type a radius or transition length to set it; moving a point keeps them. Design speed and terrain are shared with the road profile.

3. Sections and pavement design

Layered-elastic check settings (IRC:37-2018)

Bituminous layers (IRC:37-2018 Table 9.2, 35 °C) Or modulus from tests (MPa) DBM construction Or air voids from the mix design (%) Effective binder volume Vbe (%) from the mix design Road category (reliability, cl. 3.7) Concrete roads: commercial vehicles per day (IRC:SP:62 under 450, IRC:58 above) Concrete roads: transverse joint spacing (m) Concrete roads: 28-day flexural strength (MPa)

Strains under the IRC:37 standard axle (dual wheels, 20 kN each, 0.56 MPa, 310 mm apart) by multilayer elastic analysis; fatigue and rutting lives by IRC:37-2018 for each flexible section. IRC:37-2018 gives the modulus (Table 9.2) and the air voids (cl. 9.2); the effective binder volume comes from your mix design at that air void content.

4. Ground levels, profile and earthwork

Also get levels across the road (elevation data, ±70 m) Elevation data

Contours on the map

Profile and earthwork settings

Design speed (km/h) Terrain Max grade % (blank = standard) Road level above ground (m) Grade point spacing (m) Formation width beyond carriageway, total (m; blank = cross-section) Fill slope (H per 1 V) Cut slope (H per 1 V) Soil: compacted fill from 1 m³ cut (shrinkage) Rock: compacted fill from 1 m³ cut Soil bulking: loose m³ from 1 m³ cut (haulage) Rock bulking: loose m³ from 1 m³ cut (haulage) Topsoil stripping depth (m) Rock below ground at depth (m; blank = no rock) Optimiser rate: excavation per m³ Optimiser rate: embankment fill per m³ Optimiser rate: borrow per m³ Optimiser rate: disposal of surplus per m³ Currency of the rates Benching of fill on ground steeper than 1V:4H

Editable defaults: road level 1.0 m above ground, formation width from each section's cross-section, slopes 2:1 fill and 1:1 cut, compaction 1.0 for soil and rock (no shrinkage), bulking 1.25 soil and 1.50 rock for haulage. Set them from the soil investigation.

Grade points

Elevation-model levels (terrain tiles resampled from 1–30 m national and SRTM data, or the 90 m Copernicus model; a few metres vertical error; may include trees and buildings) are for planning only. Import surveyed levels (CSV with Chainage and Level, or Latitude, Longitude and Level) for design.

Survey points: CSV with E, N, Z (UTM, same zone as the project) or Latitude, Longitude, Level; files without a header (point, easting, northing, level) are read by value size. Surface: LandXML TIN from Civil 3D, OpenRoads or Novapoint. Levels are sampled every 2 m across the road and give true cross-sections for earthwork.

Survey points are triangulated (TIN). Add a Code column (EP, KERB, TOE, TOP, DRAIN, CL, BANK, FENCE, BLD, WALL …; EP1, EP2 for separate strings) and points with the same code are joined into lines: edges, kerbs, toes, tops, banks and drains become breaklines of the ground; fences, buildings and walls are drawn only. Other codes (TREE, POLE, MH …) are marked as points.

5. Drainage

Drainage settings

1-hour rainfall, design return period (mm) Runoff coefficient C Minimum pipe diameter (mm) Culvert bed slope (%) Clearance, HFL to bottom of subgrade (m) Subgrade thickness (m) Piped storm sewer Sewer cover to pipe top (m) Minimum sewer diameter (mm) Gully spacing (m) Stream below culverts: bed width (m) Stream side slope (horizontal per 1 vertical) Stream roughness, Manning n Design storm for sewer routing (minutes) Storm factor (1.25 to check a heavier storm)

Design return period

USA: on the NOAA Precipitation Frequency Data Server (hdsc.nws.noaa.gov/pfds), pick the site, choose Precipitation intensity, and download the CSV of the estimates. Other countries: a CSV with a header row "Duration, 2, 5, 10 …" (return periods) and one row per duration (5-min, 1-hr …) in mm/h.

The stream below each culvert sets the tailwater: its normal depth at the design flow (Manning, stream slope = culvert bed slope), or the tailwater level you enter for that culvert. Manning n: about 0.03 clean earth, 0.035 some weeds, 0.05 stony or weedy, 0.1 heavy brush.

Runoff coefficient: about 0.2 sandy soil, 0.4 cultivated loam, 0.6 stiff clay, 0.8 to 0.9 rock or paved areas. Take the 1-hour rainfall from the local rainfall atlas or IDF curve.

Where the flow is more than about 30 m³/s, the catchment is over 25 km², or you choose Bridge, the module plans a bridge: waterway by Lacey (4.8√Q), standard spans, deck level = flood level + vertical clearance (IRC:5 in India, the national standard elsewhere) + deck depth; the embankment is left out over the bridge length.

Culverts go at low points of the ground and at sags of the road in cut. Flow by the rational method; pipes and boxes flow 80% full under at least 0.6 m cover. Enter the highest flood level (HFL) at a culvert: the road must stay at least HFL + clearance + subgrade + pavement, and Suggest grade line keeps it there. Side drains run wherever the road is in cut, split at high and low points, and are sized by Manning. Planning level: confirm catchments, flood levels and structure type in detailed design.

6. Junctions and utilities

Right of way for utility conflicts (m)

Junctions are checked against curves, crest curves, grades and spacing; the design vehicle's turn is simulated at each kerb return (rear wheels follow the front, tractrix). Side roads get curves for their design speed, a profile from the main road level and pavement and earthwork quantities. Utilities are checked for length inside the right of way and road crossings. All feed the DPR.

7. Road safety: sight distance, markings, signs

Safety settings

Traffic keeps Markings and signs standard Setting

The sight check draws a line from the driver's eye to an object on the road ahead, every 20 m in both directions, over the finished 3D road, its side slopes and the ground beside it. Markings (edge, centre, lane, no-overtaking, stop and give-way lines) and signs (curves, junctions, speed limits, steep grades, lane drops, km stones) are laid out from the design and counted for the DPR. Planning level: confirm with a road safety audit.

8. Construction schedule (4D) and cash flow

Schedule settings

Start date Crews per activity Working days per month

Durations come from the quantities and typical outputs per crew (earthwork 1,500 m³/day, sub-base and base 800 m³/day, surfacing 450 m³/day, culverts 15–30 days each). Each work front follows the one before without catching up. The 3D corridor shows the road as built on any day, the IFC file carries the tasks (4D), and the DPR spreads the BOQ cost over the months (5D).

9. 3D view

Cross-section shows the selected section's layers. Corridor shows all sections along the road.

10. Export

Cross-sections every

Sheet size

Title block, signatures and revisions

Client Consultant Drawing number prefix Status Designed Drawn Checked Approved

Revisions, one per line: rev; date; description; by; checked

Shown in the title block of every sheet; the latest five revisions are listed. The drawing number is the prefix plus the sheet number.

DXF (plan in UTM, long section and cross-sections, on named layers) opens in AutoCAD, Civil 3D, OpenRoads, BricsCAD and free viewers. IFC opens in Revit, Civil 3D, OpenRoads and free viewers such as BIMvision. LandXML opens in Civil 3D and OpenRoads. GeoJSON opens in QGIS and ArcGIS. KML opens in Google Earth. IFC and LandXML use UTM coordinates. The design surface file holds the finished road and formation as 3D surfaces (TIN) with design lines, for Trimble, Topcon and Leica machine control and survey software; stake-out points list centreline, edges and slope toes or tops every 20 m.

11. Field data and digital twin

Bring in surveys of the built road as they are made: roughness (IRI), rutting, cracking and potholes, FWD deflections, cores or GPR thickness and traffic counts. Each survey is kept with its date, so the twin shows the condition now, the trend, the forecast and the treatment needed.

Use on its own: an existing road (no design needed)

For a road already in service: describe its pavement, choose how to place it on the map, then import the surveys. Steps 1 to 10 are not needed. The standards follow the road's location (place the site first if the map shows none).

Pavement type Lanes Bituminous layers (mm) Concrete slab (mm) Lean concrete / cement-treated base (mm) Granular base and sub-base (mm) Subgrade CBR (%) Design traffic (msa, if known) Year opened to traffic Road on the map Start chainage and length

Survey date

On the map:

Twin settings (limits, forecast, FWD)

Segment length IRI good below (m/km) IRI poor above (m/km) Rutting good below (mm) Rutting poor above (mm) Cracking good below (% area) Cracking poor above (% area) Concrete: cracked slabs good below (%) Concrete: cracked slabs poor above (%) Concrete: faulting good below (mm) Concrete: faulting poor above (mm) Skid resistance investigatory level (coefficient) Texture depth investigatory level (MPD, mm) With one survey: IRI growth (% a year) With one survey: rut growth (mm a year) With one survey: cracking growth (% a year) FWD standard load (kN) FWD plate radius (mm) Standard pavement temperature (°C) Temperature correction of the bituminous modulus Back-calculation layers FWD test season Characteristic value, percentile Project reliability (%; Austroads asphalt fatigue factor) Binder volume Vb (%; Austroads / Shell fatigue) Germany: FWD check Fatigue function a (N = a·ε^k, ε in ‰) Fatigue function k (negative) Safety factor F (RDO, your load class) Shift factor SF Asphalt stiffness vs temperature, °C : MPa; … Asphalt temperature classes, °C : share %; … Axle loads, kN : share %; … Axle passes still to carry (million) Tyre pressure (MPa) Wheels per axle Dual wheel spacing, centres (mm) Lab curve fitted to the FWD modulus Allowable vertical stress on the subgrade (MPa, optional) Overlay modulus (MPa) Rate: asphalt laid (per m³, optional) Rate: milling 50 mm (per m², optional) Life-cycle: analysis period (years) Life-cycle: discount rate, real (%) Life-cycle: traffic growth (% a year) Life-cycle: years the design traffic covers Carbon: asphalt laid (kg CO₂e per m³) Carbon: milling (kg CO₂e per m²) Recycling: CIR depth (mm) Recycling: CIR / foamed-bitumen layer modulus (MPa, lab) Recycling: lab ITS dry (kPa) Recycling: lab ITS soaked (kPa) Recycling: FDR stabiliser Recycling: FDR depth (mm) Recycling: FDR layer modulus (MPa, lab) Recycling: FDR cement, lab 7-day UCS (MPa) Rate: CIR (per m², at the depth above) Rate: FDR (per m², at the depth above) Carbon: CIR (kg CO₂e per m²) Carbon: FDR (kg CO₂e per m²) Layer coefficient: CIR layer (AASHTO) Layer coefficient: FDR layer (AASHTO) Layer coefficient: existing granular (AASHTO, × drainage) Existing asphalt layer coefficient (AASHTO, options) Design traffic for strengthening (msa; blank = section msa) Year opened to traffic Lane distribution factor (blank = from lanes)