RHC Engineering

RHC Engineering Free tutorials and knowledge regarding Structural and Civil Engineering.

Back to basic... Revit Structure in Udemy.
01/10/2025

Back to basic... Revit Structure in Udemy.

Shout out to my newest followers! Excited to have you onboard! Lutfor Rahman, Jerom Escrupolo, Mekuanint Getachew, Majid...
01/10/2025

Shout out to my newest followers! Excited to have you onboard! Lutfor Rahman, Jerom Escrupolo, Mekuanint Getachew, Majid Hamah, Madrigal Obamos Mandalawi, Roberto Perez, Maria Mori, Victor Hustiuc, Joanson Luzon, Khaled Mostafa, Ty Tuoch, Solras Zacaras, Anghel Castillo

Reinforcement Calculator (Free Webtool)Calculate reinforcement requirements for concrete members including area of steel...
28/09/2025

Reinforcement Calculator (Free Webtool)

Calculate reinforcement requirements for concrete members including area of steel and spacing calculations.

Complete Guide to Estimating Reinforced Concrete Elements⏱️ 25 min read🏷️ Technical GuideAccurate estimation of reinforc...
27/09/2025

Complete Guide to Estimating Reinforced Concrete Elements

⏱️ 25 min read
🏷️ Technical Guide

Accurate estimation of reinforced concrete elements is crucial for successful construction projects. This comprehensive guide provides detailed methodologies for estimating quantities of concrete, reinforcement, and formwork for slabs, beams, columns, footings, and stairs. Each section includes practical examples with step-by-step calculations to ensure precise quantity takeoffs.

26/09/2025

Resume Builder.
Generate your resume.

23/09/2025

RHC LOT Bearing plotter

Here’s a practical Top 5 software list every new Structural Engineer should master in 2025, based on current industry de...
22/09/2025

Here’s a practical Top 5 software list every new Structural Engineer should master in 2025, based on current industry demand and evolving workflows:

1. ETABS (CSI)
Why: Still the gold standard for building analysis and design, especially for high-rise and complex structures.

Skills to focus:
* Linear & nonlinear analysis
* Response spectrum and time history methods
* Auto-generation of load combinations (per ACI, ASCE, SBC, Eurocode)
* API scripting (C #, Python) for automation

2. SAFE (CSI)
Why: Essential for slab, mat foundation, and raft analysis/design. Increasingly used in combination with ETABS for complete structural workflows.

Skills to focus:
* Punching shear checks
* Post-tensioned slab modeling
* Soil-structure interaction modeling
* Report generation for submittals

3. STAAD.Pro (Bentley)
Why: Widely used across the Middle East, Asia, and Europe for steel and concrete design, especially in infrastructure and industrial projects.

Skills to focus:
* Advanced steel design per AISC/EN codes
* Dynamic load applications (seismic, wind, moving loads)
* OpenSTAAD API (VBA, C #) for custom design extraction
* Integration with RAM and Tekla

4. Revit + Structural BIM Plugins
Why: BIM is no longer optional - Revit is the industry leader for structural detailing and coordination with architects and MEP.

Skills to focus:
* Family creation (structural templates)
* Rebar detailing automation
* Dynamo scripting for repetitive tasks
* Clash detection and coordination in Navisworks

5. Mathcad Prime / Excel Advanced
Why: Clear calculation documentation is a must. Mathcad is excellent for preparing professional engineering reports with units handling. Excel remains unmatched for quick checks and parametric studies.

Skills to focus:
* Mathcad conditional blocks & symbolic calculations
* Excel VBA/macros for structural spreadsheets
* Linking analysis software outputs into calculation sheets
* Presentation-quality calculation reports

Bonus (for future-proofing)
*Python & C # automation → to extend ETABS, STAAD, and SAFE via APIs.
*Tekla Structures → for steel detailing and shop drawings.
*ANSYS / Abaqus → if interested in research, advanced FEM, or non-linear fracture modeling.

👉 My recommendation: Master ETABS + SAFE + Revit first (core structural + BIM workflow), then STAAD.Pro for versatility, and Mathcad/Excel for professional documentation.

SAMPLE RC BEAM DESIGN — ACI 318-14 (SI)Given• L = 6.0 m (simply supported)• Trial section: bw = 300 mm, h = 600 mm → d ≈...
22/09/2025

SAMPLE RC BEAM DESIGN — ACI 318-14 (SI)

Given
• L = 6.0 m (simply supported)
• Trial section: bw = 300 mm, h = 600 mm → d ≈ 530 mm
• Materials: f’c = 30 MPa (NW), fy = fyt = 500 MPa
• Service loads: self-wt = 4.32 kN/m; superimposed dead = 2.0 kN/m → D = 6.32 kN/m; live = 12.0 kN/m

Factored actions
• wu = 1.2D + 1.6L = 26.784 kN/m
• Mu = wu L² / 8 = 120.53 kN·m
• Vu = wu L / 2 = 80.35 kN
• ϕflex = 0.90, ϕv = 0.75

Flexure — ACI Ch. 22; Min steel — §9.6.1.2
• As,req ≈ 522 mm² (from ϕMn ≥ Mu)
• As,min = 445 mm²
• Adopt 3–Ø16 → As = 603 mm²
→ ϕMn ≈ 138 kN·m > 120.5 kN·m ✅

Shear — ACI Ch. 22; §9.6; §9.7.6
• Vc = 0.17√f’c·bw·d ≈ 148 kN
→ ϕVc ≈ 111 kN > Vu ✅
• Spacing limit: s ≤ min(d/2, 600) = 265 mm
• Adopt 2-leg Ø10 @ 250 mm
→ ϕ(Vc + Vs) ≈ 236 kN ≫ 80.35 kN ✅

Adopted details
• Section: 300×600 mm, d ≈ 530 mm
• Longitudinal: bottom 3–Ø16; top nominal
• Stirrups: Ø10 (2-leg) @ 250 mm; first within d from support
• Serviceability & development: ACI Ch. 24, Ch. 25

Note: Always verify the results and code references.

Design of RC Beam (ACI 318-19M) — Quick Process1. Define geometry & materials (b, h, cover; , ).2. Flexure: choose , siz...
22/09/2025

Design of RC Beam (ACI 318-19M) — Quick Process

1. Define geometry & materials (b, h, cover; , ).

2. Flexure: choose , size tension steel so (tension-controlled ). Use strain-compatibility with compression block and . (ACI Ch. 21 & §22.2–22.3)

3. Shear: check with ; apply updated 318-19 rules linking to provided stirrups vs . (ACI §22.5)

4. Development & splices: verify , hooks/splices, and anchorage. (ACI Ch. 25)

5. Serviceability: check deflection (immediate & long-term) and crack control (bar spacing/size). (ACI Ch. 24)

6. Detailing: covers, bar spacing, minimum web steel, bends, and supports. (ACI detailing chapters)

Sample (metric):
Given MPa, MPa, mm, mm, cover = 40 mm, stirrup Ø10, tension bars Ø20 → mm.
Factored moment kN·m.
Required steel (singly reinforced): mm².
Provide 3-Ø20 ( mm²) → kN·m 150 kN·m (tension-controlled).
(Then check shear per §22.5, per Ch. 25, and serviceability per Ch. 24.)

Key ACI 318-19M references (by chapter/section):
Ch. 21 Strength-reduction factors .
Ch. 22 Sectional strength: §22.2 design assumptions, §22.3 flexure, §22.5 one-way shear.
Ch. 24 Serviceability (deflection & crack control).
Ch. 25 Reinforcement details (development & splices).
Note: 318-19 revised vs. 318-14; shear now depends on whether ≥ .

Introducing RHCE Tool Suite — a compact collection of Civil, Structural, and Plumbing Engineering apps built for fast, r...
17/09/2025

Introducing RHCE Tool Suite — a compact collection of Civil, Structural, and Plumbing Engineering apps built for fast, reliable calculations and on-site productivity.

Download: https://rhcetoolsuite.com/

Shear, Moment, and Deflection Diagrams: VBA, C #, Python, and HTML ImplementationComplete guide to creating shear, momen...
13/09/2025

Shear, Moment, and Deflection Diagrams: VBA, C #, Python, and HTML Implementation

Complete guide to creating shear, moment, and deflection diagrams using VBA, C #, Python, and HTML/JavaScript. Includes step-by-step code examples, calculations, and plotting techniques for structural engineers.

Introduction
Creating accurate shear, moment, and deflection diagrams is fundamental to structural engineering. While manual calculations are essential for understanding the underlying principles, programming solutions can significantly improve efficiency and accuracy. This comprehensive guide demonstrates how to implement these calculations using four different approaches: VBA, C #, Python, and HTML/JavaScript.

Read the full blog here:
https://rhcetools.com/blogs/shear-moment-deflection-diagrams-vba-csharp-python.html
https://rhcetools.com/blogs/shear-moment-deflection-diagrams-vba-csharp-python.html
https://rhcetools.com/blogs/shear-moment-deflection-diagrams-vba-csharp-python.html

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