Spreadsheets
Reinforced Concrete Corbel and Bracket Design Excel Spreadsheet – ACI 318-25
19 $
What's Included
Single-page printable reinforced concrete corbel and bracket design Excel spreadsheet to ACI 318-25 Section 16.5. Checks shear span-to-depth ratio (av/d <= 1.0), maximum concrete shear limit (phi = 0.75), shear-friction Avf, direct tension An, primary tie steel As, and closed horizontal stirrups Ah.
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Product Description
Product Overview
This Excel calculation sheet sizes reinforced concrete corbels and brackets subjected to vertical shear (Vu) and horizontal tensile force (Nuc) in accordance with ACI 318-25 Section 16.5. All geometry limits, concrete shear stress caps, primary tension tie reinforcement, and horizontal closed stirrups fit onto a single printable engineering sheet.
Standard: ACI 318-25 Sec. 16.5
Units: US Customary (kips, in, ksi)
File: 03-Corbel Design Based on ACI 318-25.xlsx
Units: US Customary (kips, in, ksi)
File: 03-Corbel Design Based on ACI 318-25.xlsx
Design Checks & Calculation Scope
Applicability & Depth Check (Sec. 16.5.1)
Verifies shear span-to-effective depth ratio av/d ≤ 1.0, horizontal tension ratio Nuc ≤ Vu, minimum depth at outer bearing face (≥ d/2), and bearing plate size.
Upper Shear Stress Limit (Sec. 16.5.2.4)
Checks nominal shear capacity against Vn ≤ min(0.2 f’c, 480 + 0.08 f’c, 1600 psi) · bw · d for normalweight concrete with unified φ = 0.75 per Table 21.2.1(e).
Shear-Friction & Primary Tie As
Calculates shear-friction steel Avf = Vu / (φ · μ · fy), direct tension steel An = Nuc / (φ · fy), flexural steel Af, and governing primary tension steel As = max(Af + An, 2/3 Avf + An, 0.04 (f’c/fy) b d).
Closed Horizontal Stirrups Ah (Sec. 16.5.5.2)
Determines required closed stirrup/tie area Ah ≥ 0.5 (As − An) distributed within the upper two-thirds of effective depth d adjacent to the primary tie bars.
Technical Summary
| Governing Standard | ACI 318-25 Section 16.5 & Table 21.2.1(e) (φ = 0.75) |
| Unit System | US Customary (kips, in, ksi) |
| Worksheet Tabs | CORBEL (Calculation Sheet), Design Basis |
| Key Inputs | Factored Vu and Nuc (default min 0.2 Vu), shear span av, corbel width b, total height h, f’c, fy, friction coefficient μ, bar sizes |
| Key Outputs | Geometry status, φVn,max vs Vu, required Avf, An, Af, As primary bars, Ah closed stirrups & distribution depth |
Worksheet Screenshots
Sample calculation output captured directly from the Excel printable sheets:
Building Code Standards & Regional Applicability
Strength reduction factors (φ), capacity equations, and reinforcement detailing limits follow ACI 318-25 / ACI 318M-25 and ASCE/SEI 7-22. Engineers working under national codes derived directly from ACI 318 can adjust concrete strength, steel yield grade, load factors, and bar sizes directly in the input cells:
| Region / Country | Applicable National Standard | Engineering Application |
|---|---|---|
| United States & Territories | IBC 2024 / ACI 318-25 / ASCE 7-22 | Matches current IBC / ACI 318-25 building code provisions in US customary units (kips, in, ksi). |
| Saudi Arabia & GCC | SBC 304 (Saudi Building Code) | SBC 304 adopts ACI 318 strength reduction factors (φ) and detailing provisions directly for EPC and commercial submittals. |
| Philippines | NSCP 2015 (ACI 318 based) | Uses equivalent strength design, shear-friction, and seismic detailing provisions; metric or customary bar inputs supported. |
| Indonesia | SNI 2847:2019 / SNI 1726:2019 | SNI 2847 adopts ACI 318 provisions with compatible flexural, shear, deep-beam, and special wall checks. |
| Colombia & Latin America | NSR-10 / NEC-15 / NTC-C | Follows the ACI 318 framework for seismic confinement, coupling beams, shear walls, and spread foundations. |
| Canada & International | CSA A23.3 / International Projects | Useful as an ACI 318-25 design check on international industrial, oil & gas, and plant foundations. |
Spreadsheet Notes & Engineer Responsibility
- Editable Open Formulas: All worksheets use native Excel formulas without VBA macros or password-locked sheets.
- Worked Example Included: Pre-populated sample inputs and pass/fail checks allow you to review the calculation flow immediately before entering project loads.
- Professional Responsibility: This spreadsheet is an engineering design aid. Input loads, geotechnical parameters, site seismic criteria, reinforcement detailing, and final code compliance remain the responsibility of the Engineer of Record.
Included File
- Workbook:
03-Corbel Design Based on ACI 318-25.xlsx(calculation sheet(s) + Design Basis reference tab). - Delivery: Instant download link (Google Drive) provided after checkout.
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