The complete platform for HDD engineering
From live geodata and 3D ground modelling to drilling forces, settlement analysis, and submission-ready deliverables — everything a crossing needs, in one place.
Hundreds of routes. Scored. Ranked.
Set your design ranges and let the parametric engine sweep the full design space. Every candidate alignment is checked against your constraints and scored on seven engineering criteria — so you choose between the best options, not the first one that works.
Parametric Route Generation
Sweeps entry/exit angles, curve radii, depth, and bend count within your min/max ranges — generating hundreds of candidates, diversity-filtered to the strongest few.
Seven-Criteria Scoring
Each route is scored on length, cover, clearance, curvature, settlement, constructability, and risk, then ranked by composite score with radar-chart comparison.
Auto-Design Engine
Automatically computes entry/exit angles and curve radii that clear every utility and exclusion zone. Set your parameters and let the solver optimise.
Multi-Bend Profiles
Support for 3 to 6 intermediate bends. Handles varying geology, deep utility clusters, and crossing spans exceeding 200 metres.
Forces, fluids, and hydraulics — calculated to standard
A full drilling calculations engine built on ASTM F1962 and ASCE MOP 108. Every design gets stage-by-stage installation forces, hydraulics checks, and soil-specific fluid recommendations — automatically.
Pullback Force Analysis
Stage-by-stage pullback forces including friction, buoyancy, gravity, capstan curve effects, and fluid drag — with an automatic rig capacity check and factor of safety.
Hydraulics Verification
Annular velocity and cuttings transport checks, Bingham-plastic pressure losses, and required pump pressure — clear pass/fail on every run.
Drilling Fluid Formulation
Soil-aware fluid recommendations across nine ground categories — from rock to peat — with volume estimation, viscosity targets, and product mixes.
Reaming Sequence
Auto-computed ream sequence from pilot bore to final diameter, with per-pass diameters feeding straight into settlement and force calculations.
Predict ground movement before you drill
Settlement analysis at two levels of rigour: instant Gaussian trough predictions for every design iteration, and full finite element analysis when the crossing demands it.
Settlement Troughs
O'Reilly & New Gaussian settlement predictions with multi-pass volume loss modelling — pilot, reams, and final pull each contribute their own share.
Finite Element Analysis
2D plane-strain FEA of the bore cross-section with layered soil models — instant internal solver plus Kratos GeoMechanics integration.
Hydrofracture Assessment
Maximum allowable bore pressure by cavity expansion theory versus circulating pressure — frac-out factor of safety along the full alignment.
Duct Collapse Checks
HDPE duct collapse verification using Timoshenko ring buckling — factor of safety tables generated for every duct in the bundle.
Your site, mapped and modelled automatically
CurveHDD pulls live Great Britain geodata for your crossing — Ordnance Survey mapping, BGS geology and boreholes, LIDAR terrain, satellite imagery, and buried-plant evidence — and builds a ground model from it.
Live GB Data Sources
Ordnance Survey NGD mapping, BGS 1:50k geology, DEFRA LIDAR terrain, satellite imagery, and OpenStreetMap buried-plant evidence — fetched for your site on demand.
3D Geology Viewer
Interactive 3D ground model — LIDAR terrain draped with geology or satellite imagery, strata surfaces interpolated from BGS borehole records, and your bore path threaded through it.
Strata Designer
Review and edit the inferred ground model layer by layer. Borehole records from GI surveys and the BGS index become editable strata surfaces.
Water Crossing Depths
Automatic waterbody classification and bed-depth estimation for river, canal, and estuary crossings — with confidence scoring and engineering justification text.
Ten specialists working your project
A coordinated multi-agent system takes your crossing from survey to sign-off — authoring documents, reviewing the design against UK standards, estimating costs, and screening consents while you engineer.
GDR & RAMS Writers
Agents author the Ground Design Report section by section and produce the Risk Assessment & Method Statement — grounded in your actual design data.
Technical Review & QA
A technical reviewer checks the design against UK HDD standards, a drawing checker audits GA and profile drawings, and a QA coordinator runs the cross-reference audit.
Cost Estimator
Bill of quantities and preliminary cost estimate, exported as an editable Excel workbook with live formulas, category subtotals, and summary sheets.
Consents & Environmental
Regulatory consents screening plus ecology, flood risk, heritage, and frac-out impact assessment — with site access and compound layout planning.
Submission-ready deliverables, without AutoCAD
Everything the client, reviewer, and drilling contractor need — layered CAD drawings, a full Ground Design Report, station tables, and QA exports — generated straight from the design.
DXF & DWG Drawings
Plan and long-section GA drawings in layered R2013 DXF — compatible with AutoCAD, BricsCAD, and all major CAD platforms, with DWG conversion built in.
Full GDR Reports
A 13-section Ground Design Report PDF — geotechnical parameters, bore design, hydrofracture, settlement, scored 5×5 risk register, monitoring triggers, and bibliography.
Rod-by-Rod Station Tables
Automatic chainage-vs-depth tables for every rod length — embedded in the drawing, appended to the GDR, and exported as CSV.
Survey Import
Overlay DWG, DXF, and PDF survey backgrounds — topographic, ground investigation, GPR, and bathymetric — with full entity support and per-type toggling.