AutoCAD 3D Rebar Quantity Model

About the project

I have a set of deep-sump reinforcement drawings prepared in AutoCAD 2020. Your task is to translate every 2D rebar detail into a true-to-drawing 3D model that lets me obtain an instant, reliable tonnage with a single command. Scope • Model every bar exactly as shown in the 2D DWGs—no self-added steel—yet capture all bends, hooks and overlaps so the final quantity reflects 100 % of what is really there. • Place each bar diameter on its own layer. • Place all lap lengths and chair bars on separate, clearly labelled layers; they must be excluded from the payable tonnage. • Work to millimetre accuracy; the current concrete volume is 9 ,560 m³ and our existing manual take-off shows 1,070 t (≈112 kg/m³). With fully resolved modelling I expect the figure to exceed 1,200 t, still excluding laps and chairs. • Deliver a live weight schedule exported to Excel showing: – Bar ID / location – Diameter – Length – Unit weight – Total weight – Layer reference Standards & Conventions • AutoCAD 2020 native format. • Use a clear, industry-standard layer naming style (Dia16, Dia20, Lap_Dia20, Chair_Dia12, etc.). • All calculations must rely on AutoCAD’s mass properties or FIELD commands so I can re-audit the file at any time. Acceptance I will run my own weight check by isolating layers and comparing to the Excel sheet; any variance above 0.5 % must be resolved before final sign-off. Send back: 1. The .dwg with fully modelled bars and clean layer tree. 2. The Excel summary described above. If you have handled heavy-reinforced concrete structures before and can hit these accuracy targets, let’s get started.

Skills required