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02 · Infrastructure · rail & bridges · India

A railway bridge on the Dedicated Freight Corridor, at LOD 400

A minor bridge carrying two DFC tracks: six PSC girder spans, 119.4 m long, with piers and abutments on 80 bored piles. From one general arrangement drawing, our AI model built the whole bridge at LOD 400: concrete, 68,468 reinforcement bars, 12 A1 sheets and a BOQ to IS 1200.

Scope
Structure · Rebar · BBS · BOQ
Deliverables
RVT · IFC with every bar · DGN · 12 A1 sheets · BOQ
Year
2026
LOD 400PSC girder · 6 spans2 DFC tracksRVT · IFC · DGN
A railway bridge on the Dedicated Freight Corridor, at LOD 400
119.4 m
Overall length
598
Elements, ≤ 1 mm to GAD
80
Bored piles, 1,200 dia
6,299 m³
Net concrete
10
Parametric families
0
Revit warnings

01 · The model

One drawing in. A whole bridge out.

Piles, pile caps, piers, abutments with return walls, PSC girders, deck and ballast retainers: every element placed within 1 mm of the GAD and built from 10 parametric families.

Whole bridge · piles, piers, abutments, girders, deck
Whole bridge · piles, piers, abutments, girders, deck
Span · girders, deck, ballast retainers
Span · girders, deck, ballast retainers
Abutment on bored piles
Abutment on bored piles
Pier on bored piles
Pier on bored piles

02 · Reinforcement

68,468 bars, modelled in 3D.

Our AI model read every text, dimension and viewport of the GAD, caught a wrong unit header and a leftover sheet from another bridge inside the same DWG, then built the concrete and the rebar. The GAD carried no reinforcement, so bars follow typical detailing and are stamped as such; everything assumed is shown in orange and listed.

1,905
Rebar sets
575.7 t
Steel, within 0.07% of bar data
12
A1 sheets with BBS
0
Revit warnings
Pier + pier cap rebar
Pier + pier cap rebar
PSC girder reinforcement
PSC girder reinforcement
Abutment + return walls
Abutment + return walls
Deck slab mesh · span 2
Deck slab mesh · span 2
A1 sheet · pile cap rebar + BBS
A1 sheet · pile cap rebar + BBS

03 · BOQ

Quantities straight from the model.

A BOQ to IS 1200 with an abstract, element-by-element measurement and a steel sheet by diameter. Totals tie out: the concrete total in the abstract equals the measurement sheet. When the model changes, quantities are re-run, never re-counted.

ItemUnitQty
Earthwork in excavation · pile caps, abutmentsm³2,265.09
PCC M15 levelling, 100 thkm³81.83
Bored cast-in-situ piles, 1200 diam2,019.77
Pile concrete M35m³2,284.31
RCC M35 · caps, piers, abutments, wallsm³2,761.22
RCC M45 · deck slab, diaphragms, retainersm³509.93
Reinforcement Fe500D · hooks + lapst601.4

Abstract excerpt. Concrete total 6,306.30 m³ = measurement sheet.

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Next case study

A three-storey residence, coordinated across three disciplines

Multi-discipline residence · LOD 400 →