Mass Concrete Underpinning Design

@lawrence219

:)⭐️, Hello! I can provide the structural design calculations and sequence for your mass concrete underpinning project. I have a strong background in structural engineering and temporary works, specifically in managing the phased "hit-and-miss" excavation required to maintain building stability. My approach ensures that each pin is sized correctly for the superimposed loads while strictly adhering to safety and inspection standards. I will develop the detailed calculations for the concrete sections and soil bearing pressures, ensuring compliance with relevant building codes. I will also provide the specific excavation sequence (e.g., 1, 3, 5 then 2, 4, 6) and the necessary dry-pack specifications to ensure a solid load transfer between the new mass concrete and the existing footing. My goal is to deliver a design that is both technically sound and practical for site execution. I will deliver the full calculation package, a clear sequencing plan, and a brief set of site inspection notes for the contractor. Would you like me to include a basic AutoCAD detail of the typical pin section to accompany the calculations?

@mustafaa81

I have read your project about Temporary Works Design for Mass Concrete Underpinning. With expertise in engineering calculations, construction coordination, and technical documentation, I will ensure the design calculations are prepared accurately and delivered within your required timeframe. Based in London, I also collaborate with an experienced structural engineer who has worked on underpinning and temporary works design projects, including mass concrete underpinning systems, and holds the relevant inspection and safety certifications. My Proposed Methodology: 1- Review structural drawings, soil information, and site constraints. 2- Define underpinning sequence and temporary stability requirements. 3- Perform detailed design calculations for mass concrete underpinning. 4- Check load transfer, bearing capacity, and safety factors. 5- Prepare clear calculation sheets and supporting technical notes. 6- Ensure compliance with relevant structural standards and site safety requirements. 7- Provide documentation suitable for review and approval by project stakeholders. A portfolio of similar structural and temporary works projects, along with relevant qualifications, can be shared upon request. Regards, Mustafa Amjad Mechanical Design Engineer | ASHRAE Member | Project Consultant PEC Licenced