# RCS: Concrete Sections — Biaxial checks & rebar design

> Biaxial checks & rebar design (iPhone/iPad app by Nabil El Berria.)

- Source: https://appshunter.io/ios/app/rcs-concrete-sections/id6810959198 (this page in markdown: same URL + `.md`)
- Developer: [Nabil El Berria](https://appshunter.io/developer/6775173502)
- Category: Productivity
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 28 MB
- Languages: American English
- Released: 2026-10-18
- Data updated: 2026-10-20

## What is RCS?

Analyse and design reinforced concrete sections on your iPhone. RCS brings geometry, material properties, load cases and calculation results into one workflow, with professional PDF reports.

DEFINE YOUR CROSS SECTION
Choose from solid and hollow circular, rectangular, oblong and other standard sections. Build beam and wall sections, or define custom contours, openings and reinforcement. Use bar catalogues or custom diameters, with count and spacing modes where available.

SET MATERIALS AND THE DESIGN CODE
Define the concrete and steel properties, and select from the supported editions of ACI 318, AASHTO LRFD, CSA A23.3, CSA S6, AS 3600 and NZS 3101. Review material behaviour and adjust the advanced parameters for the selected profile. US and SI units are available.

ADD YOUR LOAD CASES
Enter axial forces and bending moments manually, import them from a file or paste a table of values.

CALCULATE SECTION PROPERTIES
Obtain areas, centroids, bending inertias and principal axes. Use finite element calculations for torsional properties, shear areas and the shear centre, and inspect shear stress distributions.

CHECK RESISTANCE IN BIAXIAL BENDING
Section check combines a 3D interaction surface, 2D curves and load checks in one page. Compare design and nominal resistance. Review resistant moments at each load's axial force, demand-to-resistance ratios and characteristic limit states. Identify the load cases the section can resist and those for which its resistance is insufficient.

DESIGN THE REINFORCEMENT
Determine the minimum steel area for the selected load cases. Review the resulting resistance surface, then recalculate a catalogue bar proposal selected from the design standard for the defined arrangement.

CREATE PROFESSIONAL REPORTS
Combine geometry, materials, loads and selected analysis results in a PDF report. Include project and engineer details, then save or share the report using your preferred app.

LEARN THROUGH A GUIDED EXAMPLE
Follow a circular-section example through section properties, section checks, reinforcement design and the final report. Contextual help explains each page and its results.

LOCAL CALCULATIONS. NO ACCOUNT.
Calculations run on your device. Save and load your project inputs locally, and choose when to share your reports. No RCS account is required.

SUBSCRIPTION
Choose a weekly or annual subscription for analyses and PDF exports without restriction. A 7-day free trial is offered, followed by automatic subscription renewal. The App Store displays the price for your region before confirmation. Manage or cancel your subscription in your Apple Account settings.

No RCS account is required. Restore purchases from Settings using the same Apple Account. Existing permanent-access purchases remain valid.

RCS calculates cross-section resistance and properties. It does not perform a complete structural or member design. Review the selected code edition, material assumptions and input data for your project.

Apple Standard EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| RCS Weekly | $4.99 | per 7 days |
| RCS Yearly | $49.99 | per year |


## Is RCS safe?

Not enough ratings yet to assess RCS.

## Is RCS legit?

RCS: Concrete Sections has limited verification signals. The AppsHunter Legitimacy Score for RCS is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0.0 — 2026-10-18

No release notes.

## More apps by Nabil El Berria

- [SectionPro](https://appshunter.io/ios/app/sectionpro/id6775173500)
- [SBA : Sections béton armé](https://appshunter.io/ios/app/sba-sections-beton-arme/id6812544244)

All apps by Nabil El Berria: https://appshunter.io/developer/6775173502

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-20.*