We’re excited to introduce the new version of GEOtExcel (2025-1) — now easier to access, fully secure, and permanently usable on your own computer. Thanks to user feedback, we’ve improved the delivery method. GEOtExcel is now offered as an Excel-based desktop application with the following benefits:
✅ Lifetime, unlimited access on your personal computer ✅ Save, print, and manage data locally — no restrictions ✅ No internet or cloud connection required
🔺 Important Note: The current version (2025-1) will remain fully functional and permanently usable on the registered computer. (If future versions are released and you choose to upgrade, special discounts will be offered to existing users.)
📦 How to Order GEOtExcel – Version 2025
To begin, please follow the steps below:
Download and unzip the package provided: https://drive.google.com/drive/folders/1JKhtKImX7JFUZ4eWV8qPi5uY34oDatQW?usp=drive_link It contains two Excel files: 🔹 File 1: GET ID This file helps you extract your computer’s unique ID. Open the file and click the “Copy Computer ID” button to copy it. 🔹 File 2: Agreement This file contains 3 sheets: Sheet 1: Price List – Select the GEOtExcel files you wish to purchase; the total price will be calculated automatically. Sheet 2: Customer & PC Info – Fill in your contact details and paste the copied Computer ID. Sheet 3: Agreement. After completing all the required fields, save the Agreement file and send it to the following email address: 📧 academy.dr.fahmi@gmail.com
✅ You can be fully confident that our support team will assist you throughout the entire process — including payment, installation, and file delivery.
Thank you for choosing GEOtExcel. GEOtExcel Support Team
☑️ Group 07: Soil Mechanics – Stress Distribution in Soil ☑️ 5 Files: [GEO-2025-0126] Soil Mech-Stress distribution in soil- Boussinesq-Point Load [GEO-2025-0127] Soil Mech-Stress distribution in soil- Boussinesq-Strip Loading [GEO-2025-0128] Soil Mechanics-Stress distribution in soil-Boussinesq-Rectangular Loading [GEO-2025-0129-A] Soil Mech-Stress distribution in Soil- Newmark Method [GEO-2025-0129-B] Soil Mech-Stress distribution in Soil- Newmark Method-Concept
✅ A New Revolution in Geotechnical Engineering: Engaging Education and User-Friendly Design with GEOtExcel (Geotechnical Excel Spreadsheets)
✅Soil Mechanics & Foundation Engineering: GEOtExcel Geotechnical Excel Spreadsheets
✅ Watch unique videos on our YouTube channel: ▶️ https://www.youtube.com/@Dr.Fahmi.GEOtExcel
✅ GEOtExcel Website: ▶️ https://geotexcel.com/
✅ Welcome to the GEOtExcel! We’re glad to have you here. I am Dr. Ahmad Fahmi, the inventor of GEOtExcel. As an academic lecturer, researcher and a geotechnical engineer, my unwavering passion lies in revolutionizing geotechnical engineering education through innovation. My team’s work centers around the GeotExcel Project, where we design and develop innovative Geotechnical Excel spreadsheets including :
🔹 Soil mechanics Spreadsheets 🔹 Foundation Engineering Spreadsheets 🔹 Spreadsheets for Geotechnical tests (Soil Mechanics Laboratory)
These interesting tools serve both educational and practical purposes in the field of geotechnical engineering. our vision is to make learning not only informative but also enjoyable. Through the GeotExcel Project, we aim to provide students, educators, and professionals with interactive, user-friendly spreadsheets that enhance the learning and designing experience. Stay tuned for exciting updates, as we will soon be unveiling a series of free and commercial spreadsheets designed with added features, advanced tools, and dedicated support to meet your specific requirements. Join us on this educational journey, where we transform the way we teach and learn in the realm of geotechnical engineering. Let’s make education a delightful and enriching experience together.
Dr. Ahmad Fahmi Assistant professor The University of Bonab
GEOtExcel = Geotechnical Excel Spreadsheets
GEOtExcel for professors & Academic Lectures
GEOtExcel for civil engineering and geotechnical engineering students
GEOtExcel for Geotechnical Engineers
GEOtExcel for Geotechnical Engineers
GEOtExcel for Civil Engineers
GEOtExcel for Geotechnical Engineers (Visit our YouTube channel and LinkedIn page)
A New Revolution in Geotechnical Engineering
Check Out Dr. Fahmi’s First Article on GEOtExcel on LinkedIn:
A New Revolution in Geotechnical Engineering: Engaging Education and User-Friendly Design with GEOtExcel (Geotechnical Excel Spreadsheets)
Soil phase relationships describe how solids, water, and air coexist in a given volume of soil and are essential in understanding soil behavior. These relationships are crucial for assessing characteristics like density, porosity, saturation rate, and moisture content, all of which directly impact soil’s engineering performance. By examining the proportions of solids, water, and air, engineers can determine how well the soil can support loads, retain moisture, or drain. Soil that is fully saturated has no air voids, while partially saturated soils contain both air and water within their void spaces. These relationships offer insights into soil’s stability, compressibility, and permeability, which are necessary for effective design in construction and environmental applications.
Watch the Related Videos on Our YouTube Channel (in English):
Soil Phase Relationships
Volume of air in the voids Volume of water in the voids Volume of soil solids
The weight of the air is negligible Weight of water Weight of soil solids
Total Volume Volume of voids Total Weight
The water content (moisture) represents the proportion of water weight to solid weight.
The void ratio represents the proportion of void volume to solid volume.
The porosity represents the proportion of void volume to total volume.
The porosity represents the proportion of void volume to total volume.
The saturation rate represents the proportion of water volume to void volume.
The air content represents the proportion of air volume to void volume.
The percentage air voids represents the proportion of air volume to total volume.
The weight of 1 cubic centimeter of water is 1 gram.
The weight of 1 cubic centimeter of air is negligible
The weight of 1 cubic centimeter of the clay is 2.72 grams (in this example):
Specific Gravity or Relative density of soil solids:
Specific Gravity or Relative density of soil solids:
Phase 1: Unit weight of air Phase 2: Unit weight of water Phase 3: Unit weight of soil solids 3-Phase Soil: Unit weight
Dry Unit Weight
Moisture Unit Weight
Saturated Unit Weight
Dry unit weight Moisture (total) unit weight Saturated unit weight
w.Gs=Sr.e
Dry unit weight & Moisture (total) unit weight Relationship
✅ Calculating Bearing Capacity Using Excel Spreadsheets
✅Bearing Capacity Calculator
Calculating bearing capacity using Excel spreadsheets is a practical, concept-oriented approach for geotechnical engineers and designers. By organizing key soil parameters such as cohesion, internal friction angle, and unit weight into structured spreadsheets, engineers can streamline complex calculations into manageable, step-by-step processes. Excel allows for the efficient application of various bearing capacity methods, such as Terzaghi, Meyerhof, Hansen and Vesic’s equations, with built-in formulas that simplify the determination of foundation performance under different loading conditions. These methods take into account different factors such as soil type, depth, shape, and load conditions, ensuring comprehensive analysis. The concept-oriented design of the spreadsheet not only clarifies the relationships between variables but also enables easy adjustments to parameters, making it ideal for optimizing designs and testing multiple scenarios. This approach improves both the accuracy of calculations and the clarity of data presentation for project documentation and reporting, while allowing engineers to apply industry-standard methods seamlessly.
Watch the Related Videos on Our YouTube Channel (in English):
To use the Unified Soil Classification System (USCS) in Excel for soil classification in geotechnical engineering, you start by entering soil test data, such as grain size distribution and Atterberg limits, into structured columns. Parameters like particle size percentages and consistency limits are included. Logical formulas are applied to classify the soil based on these data. For example, if over 50% of the particles pass through the No. 200 sieve, the soil is classified as fine-grained; otherwise, it is coarse-grained. Additional criteria like plasticity index and liquid limit further refine the classification into categories like CL, ML, or SM.
GW-GM is a dual classification in USCS, indicating a mix of well-graded gravel (GW) and silty gravel (GM). Well-graded gravel has a wide range of particle sizes, improving compaction and strength, while the silty component suggests the presence of fine particles, which slightly reduces permeability and increases cohesion. This combination provides a balance between stability and drainage, making it suitable for various engineering applications.
To utilize the Unified Soil Classification System (USCS) in an Excel spreadsheet for soil classification in geotechnical engineering, you can follow a structured approach. First, input your soil test data, such as grain size distribution (sieve analysis) and Atterberg limits (liquid and plastic limits). Create columns for parameters like particle size percentages (gravel, sand, silt, clay), and consistency limits.
Using these data, set up logical conditions and formulas in Excel to classify the soil. For example, if more than 50% of the particles pass through the No. 200 sieve, it would be classified as “fine-grained,” whereas if less than 50% pass, it would be “coarse-grained.” Use additional conditions based on plasticity index (PI) and liquid limit (LL) to further refine the classification into categories like CL (clay with low plasticity), ML (silt with low plasticity), or SM (silty sand). By organizing the data into such formulas, Excel can automatically classify soils according to USCS standards based on the inputted test results, streamlining the soil classification process.
GP-GC is a dual classification in the Unified Soil Classification System (USCS), representing a soil mixture that consists of poorly graded gravel (GP) and clayey gravel (GC). Poorly graded gravel indicates a lack of a wide range of particle sizes, meaning the gravel is uniform in size, while the clayey component suggests the presence of a significant amount of clay, which affects the soil’s cohesiveness and plasticity. This type of soil generally has lower permeability and higher compressibility due to the clay content
To efficiently calculate effective stress, total stress, and pore water pressure using Excel spreadsheets, start by organizing your data, such as soil depth, unit weights, and water levels, in a clear and logical layout. Set up separate columns for each input variable to keep the data structured and easy to update. Next, apply Excel functions to calculate total stress based on the depth of the soil and its unit weight, and pore water pressure by considering the water conditions. The effective stress is then determined by subtracting pore water pressure from total stress. Excel’s features like auto-calculation, data validation, and conditional formatting can streamline the process, ensuring accuracy and allowing you to easily modify inputs to explore different scenarios. This setup provides a simple yet powerful tool for performing geotechnical stress analysis.
Bearing Capacity in an Excel spreadsheet: Vesic’s method
Vesic’s method is a widely used approach in geotechnical engineering for determining the bearing capacity of soils. Building on previous methods like Terzaghi’s, Vesic incorporated advancements in plasticity theory to account for more complex soil conditions. His method provides more accurate predictions by considering factors such as foundation shape, depth, soil compressibility, and load inclination. This makes it especially useful in cases involving layered soils, deep foundations, and variable load conditions, offering greater precision in assessing the stability and capacity of foundations.
Watch the Related Videos on Our YouTube Channel (in English):
Grasping the relationships between soil’s different phases is vital in geotechnical engineering and soil science. These phases—solid particles, water, and air—interact in ways that deeply influence key soil properties, such as density, porosity, and moisture content. The balance and interaction of these phases dictate how soil will perform under various conditions. By studying these relationships, engineers can more precisely predict soil behavior, which is critical for designing and building stable, safe structures.
