CivilOS — All Civil Engineering Solutions at One Place
CivilOS (thecivil.site), built by civil engineer Abhimanyu Tiwari, puts a complete civil-engineering toolkit in your browser, free:
- IndoCAD — an AutoCAD-style 2D CAD editor with a real command line, AutoCAD command aliases, snaps, dimensions, hatching, 200+ blocks, DWG & DXF import and DXF export that opens in every AutoCAD since 1992; plus the IndoCAD Viewer to open, measure and mark up existing sheets.
- Indo-Revit — Revit-style BIM authoring: levels, walls, hosted doors and windows, floors, columns, beams, 3D and elevation views, quantity schedules and IFC exchange with Autodesk Revit.
- Bar Bending Schedule (BBS) — IS 456 / IS 2502 / SP 34 / IS 13920 steel measurement abstract: cutting lengths, laps, extra bars and stirrup zones, every row with a checkable formula, exported to Excel.
- 3D BIM Studio & Interior Studio — model a building and its interiors in 3D, with structure X-ray and GLB/GIF/DXF exports.
- Concept plans — home, office, shop, mall, warehouse or PEB shed → scaled floor plan → PDF sheet or AutoCAD DXF.
- Quantity Survey & BOQ — AI quantity takeoff from drawings, IS-code BOQ and estimation with CPWD / State PWD schedules of rates.
- Site tools — live-satellite-map GIS, CPM project scheduler with task management, QA/QC registers, live site audits with photos and GPS, and an AI civil-engineering assistant in English, Hindi, Telugu and Tamil.
Open thecivil.site in any modern browser — no installation. See also the free civil engineering guides: bar bending schedule, brickwork and concrete quantities, IS 456 cover, CPWD/PWD rates and house planning.
JavaScript is required to run the CivilOS app itself — the guides above work without it.