Pier design

Pier (Rectangular Stem) Design — Stepwise Calculator

Designed for blogger — single-file HTML. Exports detailed step-by-step report to PDF.

Section & Materials

Width b (mm) Overall depth / thickness h (mm) Clear cover (mm) Stirrup / tie dia (mm) Effective grade f_ck (N/mm²) Reinforcement yield f_y (N/mm²)

Loads & Geometry

Factored axial load N (kN, compression +ve) Factored bending moment M (kN·m) Clear height of pier (mm) Preferred main-bar diameter (mm) 16 20 25 12 Minimum longitudinal steel (percent of gross area) — enter as % (eg 0.24 for 0.24%)

Stress-block & code parameters (editable)

α₁ (compressive stress factor)

β (centroid multiplier)

γ (steel stress factor, e.g. 0.87)

These parameters are left editable so you can adapt the calculator to IRC/IS variants. Defaults match commonly used values in worked-examples.

Printable report includes inputs, each arithmetic step, and final recommendations.

Report & Stepwise Calculations

Click Calculate to produce a step-by-step calculation. You can then export the report to PDF.

Tip: To embed this in Blogger paste the entire HTML into a post using the "HTML" view or use Layout → Add a Gadget → HTML/JavaScript and paste. CDN scripts are used for the PDF export.