Considering both drained and undrained conditions, this tool estimates immediate and total ground settlement from service loads on the footing. It enables geotechnical risk assessments for ground subsidence and provides calculations for evaluating building damage.
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About this calculator
Footings Settlement Calculator is a comprehensive tool for estimating immediate and total ground settlement resulting from service loads on building footings. By considering both drained and undrained soil conditions, it assists users in assessing geotechnical risks related to ground subsidence and evaluating potential building damage.
This calculator is for:
- Geotechnical Engineers who need quick and reliable assessments of settlement impacts for foundations under load.
- Structural Designers involved in building design, who require accurate footing settlement data to support overall stability.
- Construction Planners assessing ground conditions and looking to mitigate risks associated with foundation settlement.
This tool is ideal for initial feasibility checks, providing a fast approach for estimating ground settlement and potential building damage risks. For more detailed analysis, methods in textbooks such as Principles of Geotechnical Engineering by B.M. Das or Foundation Analysis and Design by J.E. Bowles can be referenced for alternative calculation approaches and in-depth theoretical background.
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FAQs
What are the differences between drained and undrained conditions in soil?
Drained conditions assume water within the soil is allowed to stabilize quickly, affecting how the soil responds to loads. Undrained conditions reflect a short-term response where water cannot dissipate, often leading to different settlement outcomes.
How do immediate and total settlements differ?
Immediate settlement occurs quickly after loading due to the initial compression of the soil, while total settlement includes long-term consolidation effects as soil particles adjust and/or water pressure dissipates.
What methods are commonly used for calculating settlement?
Common methods include empirical approaches like Burland and Burbidge’s method, the Meyerhof Method, and the Meigh method, each providing frameworks for evaluating settlement in various soil conditions.
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How to verify a calculation
Engineering calculations require clarity, precision, and professionalism. Here are some best practices we use at CalcTree:
- Technical Requirements: Start with boundary conditions, units, sign conventions, and design standards.
- Check the Math: Review the calculation step-by-step. Clarify unusual steps, compare results with hand calculations or tools, and test with multiple examples.
- Peer Review: Have an independent reviewer check for logic, accuracy, and compliance.
For more on verification, see CalcTree’s internal methods.
