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New to NirtsCAD? User manual
I’m your CAD assistant—describe geometry in plain language and I’ll help turn it into drawing actions.
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Trials are free and start when you pick a product. After a trial ends, subscribe with Card or UPI Autopay. Cancel anytime.
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Unlock slab, beam, and analyze (CADMAX). 14-day trial from when you start Buildings, then Card or UPI Autopay. Includes Draw.
Requires an active NirTsCAD session. Buildings includes Draw.
No card needed. The trial starts when you pick a product.
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To use the AI assistant, you need a Gemini API key (free for low usage).
Default is Gemini 3.5 Flash Lite. Switch to 3.8 Flash to compare quality.
Developed by
NIROOBINI TECHNOLOGIES (OPC) PRIVATE LIMITED / CHENNAI / INDIA
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Only BEAM lines with both endpoints between these levels are included. COLUMN lines are not filtered by Z. Leave a field blank for no limit on that side.
Only 3DFACE entities with CADMAX:SLAB XData are used. All slab corners must lie between lower and upper Z. Leave a field blank for no limit on that side.
Same reinforcement limits as SLAB (SLABINPUT). Then select CADMAX:SLAB 3DFACE entities.
Concrete fck and steel fy come from the CADMAX panel Materials (not entered here).
Base elevation is kept; tip Z is moved to base + height.
Select a sloped 3DFACE with CADMAX:SLAB XData. H run and V rise follow the same edge rule as AutoCAD STAIRD (corner1–2 or 2–3). Then pick where to draw the detail.