Every site calculation.
One app. Paid once.
BBS, concrete quantity, estimation and full RCC design — 38 calculators that give you the answer, the working, and a report you can send. No Excel files to manage. No subscription.
Bond stress increased 60% for deformed bars, Cl. 26.2.1.1
The formula isn't hard.
Doing it forty times a week is.
You already know the maths. What costs you the evening is the repetition, the chart lookups, and the one decimal nobody catches until the bill is raised.
SP:16 charts, every single time
Reading pt off a chart for every beam, interpolating τc by hand, then hoping you read the right row. Ten minutes per member, and no way to check yourself.
Thirty-eight files, no totals
Every member needs its own sheet opened, filled and saved. Nothing adds up across the job, and nothing tells you when a section has failed.
One decimal, whole bill wrong
A quantity error multiplies across the project. By the time billing catches it, the argument with the contractor has already started.
Excel doesn't open on site
You're standing at the slab with a phone. The sheet either won't open, breaks its formulas, or needs a laptop you left at the office.
Different YouTube, different answer
Every video gives a slightly different method. Without a stated code clause behind the number, you're never fully sure the output is right.
Client wants a figure now
You need something printable in two minutes, not a number scribbled on the back of a drawing that you'll regret in the meeting.
The difference is not the formula.
It's everything around it.
| What you need | Excel sheets | Archinex |
|---|---|---|
| Getting Ast for a beam | Read Mu/bd² off SP:16, interpolate by hand | Solved from IS 456 Annex G, instantly |
| Knowing if the section fails | You have to check it yourself | Stated plainly — safe, or redesign |
| τc for shear design | Table 19 lookup, manual interpolation | Interpolated automatically |
| Seeing the working | Buried in cell formulas | Every step, with the expression |
| Using it on site | Needs a laptop, breaks on mobile | Phone home screen, works offline |
| Giving a client a report | Screenshot the sheet | Branded PDF, one tap |
| Finding the right sheet | 38 files in a folder | Search, and it's open |
| Formula consistency | Different constants in different files | One verified engine behind all 38 |
Four modules. Thirty-eight calculators.
All of them included.
No tiers, no add-ons, nothing held back. One payment unlocks everything, including the RCC design module.
RCC Design
Beam, slab, column, footing, staircase, retaining wall, water tank and dome — with shear, deflection and code-limit checks built into every result.
- Singly Reinforced Beam
- Doubly Reinforced Beam
- Two-Way Slab Design
- Uniaxial Column
- Biaxial Column
- Slender Column
- Isolated Footing
- Combined Footing
- Deflection Check
- Staircase Design
- Spherical Dome
- Cantilever Retaining Wall
- L-Shaped Retaining Wall
- Reverse L-Shaped Wall
- Rectangular Water Tank
BBS & Steel Quantity
Cutting lengths with bend deductions, full bar bending schedules with totals, and development length for every bar and grade combination.
- Rectangular / Square Stirrup
- Circular Stirrup
- Diamond / Diagonal Stirrup
- Triangular Stirrup
- Development Length
- One-Way Slab — Steel
- Two-Way Slab — Steel
- Beam — Steel Quantity
- Column — Steel Quantity
- Isolated Footing — Steel
Estimation & Costing
The ones you open every day — house cost, brickwork, plaster, paint, tiles, plot area and IS 10262 mix design. Every rate editable to your local market.
- House Construction Cost
- Brickwork Quantity
- Plaster Quantity
- Paint Quantity & Cost
- Floor Tile Quantity
- Wall Tile Quantity
- Flooring Bed — Cement & Sand
- Slab Quantity
- Irregular Plot Area
- Concrete Mix Design
Concrete Quantity
Cement, sand and aggregate worked out per cubic metre, per column set, or per slab — with cost against your own material rates.
- Cement, Sand & Aggregate — any volume
- Concrete for Columns
- Concrete for Slab
Built for the way you actually work
Not a spreadsheet with a new coat of paint. Every part of this exists because a spreadsheet couldn't do it.
The answer, up front
Result strip at the top with the number you came for. Supporting values, tables and charts underneath.
Pass or fail, stated
Shear adequate. Safe in deflection. Doubly reinforced section required. Green or red, with the reason.
Full working, on tap
Open the working panel and every step is there with its expression — for checking, and for learning the method.
Branded PDF report
Header, working, tables, verdicts and charts. Send it to a client or attach it to a bill.
Works offline
Install to your home screen. On a basement slab with no signal, it still opens and still calculates.
Your rates, remembered
Set cement, steel, sand and labour rates once for your city. Every costing calculator uses them.
Saved history
Every calculation you keep stays on your device. Open it a month later and the values are exactly as you left them.
Phone and laptop
One purchase covers two devices. Enter values at site, print the report from the office.
What the first engineers said
The doubly reinforced check is what sold me. I gave it a beam I knew was over-stressed and it stopped and told me exactly by how much. My old sheet would have just given a number.
I do BBS for slabs all week. Cutting lengths with the bend deduction already applied, and a schedule that totals itself — that alone was worth it.
I open the house cost calculator in front of clients now. Change the rate, the number changes, and the PDF goes out before I leave the meeting.
One payment. Yours for good.
No monthly fee, no renewal, no calculator locked behind a higher tier.
Archinex — Complete
- RCC Design — 15 calculators
- BBS & Steel — 10 calculators
- Estimation & Costing — 10
- Concrete Quantity — 3
- Branded PDF export
- Offline, installs to home screen
- Saved calculation history
- Phone + laptop (2 devices)
- Free updates, forever
- Access in under a minute
Offered at checkout. Normally ₹799 on Masterybooks. Take them if you also want the raw files.
7-day refund if it isn't what you expected
Who this is for — and who it isn't
Buy it if
- You repeat the same calculations every week on site
- You do BBS, billing, quantity checks or material ordering
- You want to stop reading SP:16 charts by hand
- You need a clean number in front of a client, fast
- You're a student who wants to see the method, not just the answer
- You'd rather pay once than subscribe to anything
Don't buy it if
- You want STAAD or ETABS — this is a calculator, not analysis software
- You expect it to replace engineering judgement or a design review
- You need wind or seismic analysis
- You want sheets customised to one company's billing format
- You're looking for a video course rather than a working tool
Everything worth asking
Is this really a one-time payment?+
How do I get access after paying?+
Do I need to install anything?+
How many devices can I use?+
Which codes are the calculations based on?+
Can I use the RCC output for real design?+
Does it work without internet?+
Where does my saved work live?+
What if I want a refund?+
I already bought the Excel sheets. Should I buy this too?+
Spend your evening on engineering.
Not on arithmetic.
38 calculators, full working, code checks and a report you can send. Paid once.
Calculation output is for cross-checking. Final structural decisions must be reviewed by a licensed engineer.