RC Beam Design Calculator
Static · formula-only · worked example computed when this page was built · no live data
The RC Beam Design Calculator checks a reinforced-concrete beam's moment capacity and demand-capacity ratio against NSCP/ACI. Example: for a 6 m RC beam under a 150 kN·m factored moment, Moment capacity φMn = 188.96 kN·m, Demand/capacity = 0.79, Steel area = 1256.6 mm² (per NSCP 2015 Vol.1 | AISC 360-22 | ACI 318-19 | ASCE 7-22).
How it works
Computed from your inputs per NSCP 2015 Vol.1 | AISC 360-22 | ACI 318-19 | ASCE 7-22. Anything the worked example does not state uses this calculator's standard default; the interactive version shows every input and lets you change it.
Worked example (Mechanical & Machine Design)
Inputs: a 6 m RC beam under a 150 kN·m factored moment.
| Result | Value |
|---|---|
| Moment capacity φMn | 188.96 kN·m |
| Demand/capacity | 0.79 |
| Steel area | 1256.6 mm² |
Computed by WorkHive's calculation engine when this page was built; standard: NSCP 2015 Vol.1 | AISC 360-22 | ACI 318-19 | ASCE 7-22.
How to use this calculator
- Read the worked example. It uses a 6 m RC beam under a 150 kN·m factored moment and shows every number in the method.
- Follow the formula with your own figures: it returns Moment capacity φMn, Demand/capacity, Steel area, computed per NSCP 2015 | ACI 318.
- To compute interactively, open the RC Beam Design Calculator inside WorkHive's free Engineering Design suite (link below). It runs the same method with your inputs.
FAQ
What is a reinforced concrete beam design calculator NSCP?
The RC Beam Design Calculator is a free online tool that checks a reinforced-concrete beam's moment capacity and demand-capacity ratio against NSCP/ACI. It shows the formula and a fully worked example so you can check the method, not just the number.
How is it calculated?
The result is computed from your inputs following NSCP 2015 | ACI 318. The worked example on this page shows a real computation with real numbers.
Is the calculator free?
Yes. WorkHive is free: this worked example is open to everyone, and the interactive calculator runs inside the free Engineering Design suite after a free sign-up (your work is saved to your account). WorkHive is a free, offline-first maintenance platform built for Philippine industrial plants.
Run it on your own numbers
Open the interactive RC Beam Design Calculator in WorkHive. Free, and a free sign-up saves your calculations, BOMs and scope-of-works to your account.