MIDAS CIVIL NX tools (MIDAS IT Europe)

Start here when the user shares a reinforcement drawing, photo or schedule. Read from it: cover, for each face the layers (number of bars or spacing, and Ø - mm, inches or #US sizes are all accepted), side bars, links (Ø, legs, spacing); then call this tool. It reads one beam section from the open model through the shared MIDAS section library (outline checked against CIVIL NX's published properties), places the bars with the CS 455 plugin's own placement (cover to every edge) and RETURNS A DRAWING of the section with every bar placed - compare it with the user's drawing and correct rebar until they match (ask the user about anything the drawing does not show, e.g. cover). Then cs455_export_calc_sheet gives the report. Also returns what the plugin's engine derives: area, centroid, depth, usable_for_capacity, parts, the bars placed per schedule row (or why a row failed), and the model's concrete grade. Read-only.

The report. Assesses one element end exactly as cs455_assess and writes the plugin's reference-format calculation sheet (.xlsx: A4 pages, title block, geometry, materials, reinforcement, section properties, sagging/hogging bending, shear and torsion with live formulas and charts, summary of results, and a Summary sheet with demand, resistance and ratio per check). Returns a download link. Use the same rebar/links that cs455_describe_section confirmed against the user's drawing. Read-only on the model.

On the culvert model built from the same inputs (refused if the open model's counts differ): runs the CIVIL NX analysis (unless analyse: false), reads the basic-case results (forces, reactions, displacements) and runs the plugin's checks — every Annex A2 combination and vehicle position: ULS flexure and shear, SLS stresses and crack width, detailing, bearing and uplift. Returns the verdict and the governing locations. Takes minutes: a job on the website.

Writes the 2D Culvert model exactly as the plugin's Build: units, user material, sections, frame, soil springs, supports, every basic load case with its loads, and the nested EN 1990 Annex A2 combinations; then reads the loads back and fails if CIVIL NX dropped any. Into the open model only if it is empty, or into a new document (newDocument: true — DESTRUCTIVE: CIVIL NX replaces the open model). Previews unless apply: true.

Deletes every row a culvert_build wrote (combinations, loads, load cases, springs, supports, groups, elements, nodes, sections, material) from the ledger's record, and puts back the model's units. A model replaced by newDocument cannot be brought back. Previews unless apply: true.

Validates a 2D Culvert project with the plugin's own Eurocode core and returns what it would build: nodes, elements, soil springs, basic load cases (traffic unit cases), the EN 1990 Annex A2 combination counts (ULS, SLS characteristic, quasi-permanent) and the nested CIVIL NX combinations, check locations, earth-pressure basis (K0 / PD 6694-1 Annex B / cl 9.4 K*) and derived geometry. Needs no model.

Runs the checks on the analysed culvert model (as culvert_analyse_and_check, without re-analysing unless analyse: true) and writes the plugin's report: format xlsx (default) = the calculation book in the MIDAS report format with result diagrams captured from CIVIL NX, pdf, or both (one run of the checks). Returns download links.

Imports a DXF into the open CIVIL NX model with the Advanced DXF Importer plugin's engine: the same parse, layer mapping, clean-up and write as the plugin. Nodes and elements get new ids above the model's (existing rows are never overwritten); each layer's structure group is created or added to; blank properties become the plugin's DXF default material (C40/50), section (SB 500x300) and thickness (250), created or reused by name. Previews by default (writes nothing): the plan with id ranges, groups, default properties and any unit switch. To write, call again with the same inputs, apply: true and confirmPlanHash; the model is read again and the write refused if the plan changed. The write creates a master group DXF_<file> #<token> first, then the unit change, properties, nodes, elements and groups, then reads everything back to verify. The import journal is recorded so dxf_import_undo can remove exactly what it created, even after a partial failure. Inputs as for dxf_inspect, plus mergeExisting.

Removes what one dxf_import created, with the plugin's own removal rules: it refuses unless the import's master group is in the open model; deletes the import's elements, then its nodes, only where they still match the fingerprint taken before writing (anything edited since is kept, and a node another element uses is kept); deletes the groups and default properties it created once nothing uses them; switches the model's length unit back if the import changed it and it is unchanged since. Works after a partial import too. Default: the latest dxf_import not yet undone. Previews (what would be removed and kept) unless apply: true.

Reads a DXF with the Advanced DXF Importer plugin's own parser and clean-up and reports what an import would create: the file (version, encoding, entity counts, what is ignored or unsupported), its units, every layer with its entities and mapping, and the clean model — nodes, BEAM/TRUSS/PLATE elements per layer, structure groups, disconnected parts, and the clean-up operations (merged nodes, removed duplicates and zero-length segments, splits at crossings and T-junctions, hanging nodes). Needs no CIVIL NX model and changes nothing. Give the drawing as dxfText, dxfBase64 or url (4 MB inline, 25 MB by url). Use it to choose the mapping and settings before dxf_import. Lengths in the report are in the unit the import works in (importIn).

Generates EN 1990 bridge load combinations with the Eurocode Load Combinations plugin's engine (6.10 / 6.10a+b, SLS characteristic / frequent / quasi-permanent, accidental 6.11, seismic 6.12; Annex A2 ψ by bridge type; recommended, UK or Irish annex factors; leading-action and exclusive-alternative logic) and writes them to an LCOM table with its commit: the target is re-read first, every row is read back. Previews unless apply: true.

Reads the open model the way the Eurocode Load Combinations plugin does: every static, moving (characteristic/frequent pairs), construction-stage, settlement and response-spectrum case with the action and subtype the plugin proposes, the detected bridge type, the default scope and factors (EN 1990 Annex A2 recommended, UK NA or Irish NA), each tab's gate, and the combinations already in the LCOM tables. Read-only.

Undoes the latest ec_combinations_apply run (or the run named) with the plugin's undo: deletes the rows it wrote that still carry its names, then restores the rows it deleted at their original keys. Previews unless apply: true.

Lays out EN 1991-2 lanes on a carriageway cross-section with the Eurocode - Moving Load Wizard's own layout engine: Table 4.1 notional lanes and the remaining area, footways, the LM2 axle lane, the LM4 crowd lane, an LM3 special vehicle route and rail tracks, as the chosen loading needs, with each lane's role. Needs no model.

EN 1991-2 traffic loading with the Eurocode - Moving Load Wizard plugin's own engine: lanes laid out on the carriageway (line lanes on a grillage, surface lanes on a plate deck) for the chosen load groups gr1a / gr1b / gr3 / gr4 / gr5, fatigue models and rail (LM71, SW/0, SW/2, HSLM, Irish Rail trains), the MIDAS vehicles with the EN or UK alpha factors, and the moving load cases (characteristic / frequent) — each written and read back. It reads the deck from the model the way the plugin does unless reference/surface/section.width are given, and accepts the plugin's exported settings file. Without apply it only previews (lanes, vehicles, cases, stages, blockers, planHash). With apply: true it writes, records the run for ec_moving_loads_undo, and never overwrites lanes, vehicles or cases it did not write.

Read-only: changes nothing in the model. Call it before ec_moving_loads to see what the Eurocode - Moving Load Wizard would do. Returns: existing (the lanes, vehicles, cases and groups already in the model, each marked if an earlier ec_moving_loads run created it); laneKindSuggestion (LINE for beams, SURFACE for plates); deckRead (reference girder or plate edge, width, kerb offset, cross-beam group, skew — narrowed by deckFilter, reversed by trafficOtherWay); the lanes, lane roles and cases the given settings would produce; config (the plugin's own settings file — pass it back as configFile); options (valid load groups, vehicles and Irish Rail trains). Takes the same inputs as ec_moving_loads; the write permissions (codeChange, unitSwitch) only change which blockers are listed.

Removes the lanes, vehicles, cases and groups an ec_moving_loads run wrote, using the plugin's own cleanup (cases first, bottom up, at most 100 per call): anything edited since the run, or still used by something else, is kept. Previews unless apply: true.

Calculates §8 wind on the deck and writes it with the Eurocode Wind Loads plugin's adapter: one EC1W_ load case per global direction, then beam loads (beam deck) or a pressure + fascia nodal loads (plate deck) on the target elements — one element written and read back first, then the rest, with a direction audit. Target: elementIds, a structure group, or (neither) the deck the plugin finds itself. Previews unless apply: true.

Calculates EN 1991-1-4 §8 wind actions on a bridge deck with the Eurocode Wind Loads plugin's own engine: v_b, q_p(z_e), c_sc_d, d_tot, the transverse (x), longitudinal (y) and vertical (z, at e = ±b/4) forces, and the load cases the plugin would write. Needs no model.

Reads the open model the way the Eurocode Wind Loads plugin does: finds the deck (or measures the elements / group given), and reports b, d, L, the soffit height, the span axis, whether the deck is beams or plates, and a structural-form guess. Read-only.

Removes what the Eurocode Wind Loads plugin writes: every EC1W_ load case, its load group, and their beam/pressure/nodal loads — whether this tool or the plugin window wrote them. Loads anyone else put on the same elements are kept. Previews unless apply: true.

Exports one or more CIVIL NX tables (each like the preview_result_table arguments, full scope, no sampling) into one Excel workbook built by the exporter plugin: one sheet per table (and per sub-table; split above 1,048,575 rows), unit-labelled headers, numeric cells, and a 'Contents & Export Log' sheet listing each table's request, rows and any failure. format csv gives one CSV file per sheet instead. Returns download links (never the file inline) and a per-table summary; a table that fails is logged and the rest still export. Read-only. Can run long on big models, so it runs as a job on the website.

Status, progress and (when finished) the result of a tool call that returned a jobId. Poll every few seconds until status is done or failed.

Reads one MIDAS help-centre article in full, as Markdown: headings, notes, input tables, and for the MIDAS API manual the URI, methods, JSON schema and JSON examples as code blocks. Also lists the article's images (links). Long articles come in parts: call again with nextOffset. Give the user the article's url when you rely on it. Needs no model and no account.

Searches the MIDAS help centre (support.midasuser.com), live: the CIVIL NX and GEN NX online help (every dialog: what it does, where it is in the menus, each input), the MIDAS API (MAPI) JSON manual (every db/ table, its URI, methods, JSON schema and examples), FAQ, tutorials and release notes. Use it to answer how-to and what-does-this-input-mean questions, to check CIVIL NX behaviour before advising, and to find the JSON shape of a MAPI table. English articles. Returns the matching articles (id, title, area, section, snippet, link); read one in full with midas_docs_read. Areas default to CIVIL NX help + API manual + FAQ + tutorials. Needs no model and no account.

Structured reference for writing a CIVIL NX model through the API (civil_write_tables): the material standard names CIVIL NX knows (46 concrete standards), material fields per type, grades known to work, every user section shape with the order of its dimensions (vSIZE), catalogue section examples, plate thickness, beam / truss / plate element rows and plate STYPE codes, support constraint strings, load case / self weight / nodal load / combination rows, creep-shrinkage and strength-gain code options — each with its source: MIDAS IT's open-source midas-civil-python library (MIT), the MIDAS API manual, or behaviour measured on live CIVIL NX. Also every option list in midas-civil-python (148): the 67 static load case types, beam / pressure / plane load options, combination types, the 15 moving-load codes with their standard vehicles (Eurocode LM1–LM4 incl. UK NA SV/SOV, fatigue and rail; Indian road and rail), point springs and elastic links, temperature, tendons and prestress, construction stages, response spectrum / time history, units and result components. The grade lists inside each standard and the steel section catalogues are CIVIL NX's own and published nowhere: the answer says how to confirm one safely. Topics: overview, materials, sections (shape: one shape), thickness, elements, supports, loads, moving_loads, boundaries, temperature, tendons, construction, dynamic, units, results, time_dependent, python; search alone looks through every list and vehicle. Needs no model and no account.

Reads the open model's geometry tables and CIVIL NX's computed section properties and reports the bridge the Model to IFC plugin finds in it: girder lines, piers and pylons (station, elements, bearings, foundations), abutments, bearings, the deck alignment and its line/arc fit, the joined deck, every section in use with how its outline was rebuilt and its area difference from CIVIL NX, tendons, weightless members left out, volumes per material. Read-only; writes no file. Use it before model_to_ifc / model_to_dxf, or to sanity-check a model.

Runs the Model Report plugin's fourteen quality checks on the open CIVIL NX model: duplicate (coincident) nodes, orphan nodes, zero-length and duplicate elements, elements without material/section, unused properties, disconnected regions, support adequacy, load cases with no loads, loads on missing nodes/elements, combinations citing a missing case, elements in no structure group, length outliers and end releases that make a mechanism. Returns each check's result (pass / fail / not applicable / not run), severity, criterion, count and the ids involved, a model summary (counts, units) and what was read from each table. Reads only the tables the checks use (GET only). Read-only; on the website it runs as a job.

Builds the Model Report plugin's 'Model report' for the open CIVIL NX model — cover, contents, materials, sections (with drawings), supports and springs, load cases, combinations and loads, nodes/elements/groups appendix, cross sections, tendons, CIVIL NX pictures, the QC checks and the data sources read — and returns it as download links: html (default), xlsx, docx and/or pdf, in English, French, German, Greek or Polish. Document details (project, client, job no., revision, author, checker, date …) go on the cover. Pictures are rendered by CIVIL NX (POST /view/CAPTURE, the user's own view is left as it is): by default the isometric model view and every figure saved in the model; choose model views, load views, saved figures and beam diagrams with `images` (model_report_images lists them), and the beam diagrams' legend format (exponential/fixed, decimals) there too. Otherwise reads only (GET, plus POST /post/TABLE for tendon coordinates). Runs as a job.

Lists the CIVIL NX pictures the Model Report can put in this model's report, with their keys: FE model views (iso, plan, front, side), the applied loads of each static load case, the figures saved in the model (/db/UFIG), and the beam diagrams on offer (each static case, combination and construction-stage part × components Fx…Mw). Pick from them with model_report_export images. Read-only (GET only); nothing is rendered.

Draws the open CIVIL NX model as DXF with the Model to IFC plugin's drawing engine: a 2D drawing file (DXF 2000: plan, elevation developed along the deck, hidden-line isometric, section cuts with hatched faces and tendon ducts, and every section in use dimensioned) and a 3D DXF (one polyface mesh per element, layered by role, DXF 2000 or R12). Cuts are given in metres: {kind:'cross', at: chainage} across the deck, {kind:'long', at: offset left of the centreline}, {kind:'level', at: height}, with depth = how far beyond the cut to draw; none given = one across mid-span, cutsAtSupports adds one at each pier and abutment. Only reads the model; returns download links.

Exports the open CIVIL NX model to IFC with the Model to IFC plugin: real section outlines with voids, smooth tapers, tendons, composite deck slabs, materials, structure groups and stages; in IFC4.3 also the bridge structure (deck, piers, abutments, bearings, alignment); optionally the structural analysis model with loads, combinations, support reactions, and — for the series named in resultSeries — node displacements and member/plate forces; optionally a second file of the deformed shape for one load case or combination. Only reads the model. Returns download links (never the file inline) and the exporter's report (sections, volumes, bridge parts, checks). Results are read on demand and can take long on big models (one live model: 40 s for all displacements), which is why this runs as a job.

PD 6694-1 integral abutment earth pressures by the limit-equilibrium route (K*, cl.9.4.3/9.4.4) with the PD 6694-1 Integral Abutment plugin's own engine: thermal movement and design displacement, the route (A1/A2, or B / review when Annex A is needed), applicability checks, coefficients, and the four states EXPMAX/EXPMIN/CONMAX/CONMIN (force, peak pressure, resultant, moment per metre). Needs no model.

Removes the four PD6694 EP limit-equilibrium load cases with their pressures, load groups and stage activations (the plugin's Remove). Other load cases are kept. Previews unless apply: true.

Writes the four PD 6694 limit-equilibrium states as plate pressures on one or two abutment wall groups, exactly as the plugin's Write button: same-model guard, the PD6694 EP load cases and groups, pressure items (other loads on the plates kept), then verification of the totals against the calculation; optionally activates them in a construction stage. Previews unless apply: true.

Read-only: changes nothing in the model. Call it before pd6694_ssi_run, with the same inputs, to check that the PD 6694-1 Annex A soil-structure interaction run can go ahead — it uses the plugin's own planner. Needs abutments[].group (the wall plates' structure group) and ssi.deckGroup; the soil and thermal inputs default to the plugin's values. Returns: abutments (per wall group: plates, spring nodes, piles), deltaK (the spring stiffness range), errors (blockers — pd6694_ssi_run refuses to start while any remain) and warnings (allowed, but worth showing the user).

Removes everything an SSI run left (design pressure cases, spring groups, analysis cases) and restores the model's own springs from the run's backup (the plugin's Remove SSI). Previews unless apply: true.

Runs the PD 6694-1 Annex A iteration with the plugin's own runner: Winkler springs on the walls (multi-linear), repeated analyses until the wall displacements settle, then the two design pressure cases written and the analysis set-up removed — keeping a backup of the model's own springs for undo. Takes minutes: on the website it runs as a job (poll job_status). Previews unless apply: true.

Converts the model's point loads (or a coordinate table) into dispersed patch loads with the Point to Patch Convertor's engine and writes them as PATCH_<case> load cases: plate decks get pressures on the plates the patch covers, grillages get UDLs on the members by the lever rule, total force conserved; units converted to the model's. The writer snapshots every row it touches, writes, and reads every item back with a force-equilibrium check. Previews unless apply: true.

The Point to Patch Convertor's dispersal for one point load: the code's contact area (or the load-derived one), the spread through surfacing and slab to the mid-plane or neutral axis, the effective patch b_eff × l_eff and its pressure, with the clause. Presets cover EN 1991-2 LM1/LM2, the UK NA, CS 454 / HB, BS 5400 and Network Rail ballast/fill. Needs no model.

Reads the open model as the Point to Patch Convertor does: whether the deck is plates or a grillage, its levels and groups, the point loads (nodal and beam concentrated) per load case that could be dispersed, any PATCH_ cases already written, and every preset with what it still needs. Read-only.