We take pride in delivering engineering solutions that push the boundaries of conventional design. One of our most technically ambitious and rewarding undertakings involved the design and analysis of a multi-level warehouse, incorporating crane systems and all modeled and validated using advanced 3D tools.

This wasn’t just a theoretical exercise, it was a real-world design challenge, executed with precision by coordinating with MEP, and aimed at maximizing usable space without compromising structural integrity.

Project Overview

• Structure Type: Multi-level warehouse with integrated storage and logistics zones

• Design Scope:

• Superstructure:

  • Steel or RCC frame system based on span and load requirements

  • Roof trusses or portal frames for large clear spans

• Foundations:

  • Deep foundations (bored piles or raft) based on soil conditions

  • Pile caps and grade beams to distribute loads from columns and crane supports

• Crane System Integration

  • Overhead Gantry Cranes:

    • Design runway beams and brackets for EOT (Electric Overhead Travelling) cranes

    • Include crane columns and bracing for lateral stability

  • Monorail or Jib Cranes:

    • Localized support systems for workstation-level lifting

• Primary Challenge: Design a warehouse with cranes and other lifting mediums for storage of different hazardous substances.

Key Design Challenges

• Managing high live loads from forklifts and storage racks
• Foundation design complexity due to heavy point loads from crane columns and differential settlement risk because of uneven loading from cranes
• Navigating variable soil strata and groundwater conditions
• MEP Routing conflicts like overhead space constraints, service accessibility etc.

Engineering Strategy & Structural Design

To meet the design goals, we adopted a top-down structural approach, supported by detailed 3D modelling.

Core Design Elements:
• Crane Load accommodation by using high-strength steel beams and precast concrete girders
• Design for dynamic loads, including impact, acceleration, braking, and lateral sway
• Foundations are considered as isolated or pile foundations
• Early-stage BIM Integration: Use Building Information Modelling (BIM) from the conceptual stage to coordinate crane supports, structural elements, and MEP systems
• Dedicated Crane Pathways: Reserve overhead zones exclusively for crane runways and lifting operations, with MEP routed around or beneath these paths

3D Modelling & BIM Integration

• The entire structure was modeled using Building Information Modelling (BIM) tools
• Clash detection and tolerance checks were performed to ensure constructability
• Underground MEP utilities are integrated into the BIM model, and clash detection is performed to ensure coordination with structural elements and avoid interference during construction

Design Outcome Summary

• A structurally sound warehouse was designed with integrated crane systems for storage and services
• Crane-supporting beams and columns were optimized for dynamic loads, deflection control, and vibration resistance
• Crane-supporting beams and columns were optimized for dynamic loads, deflection control, and vibration resistance
• Structural elements were validated for seismic, wind, and operational loads using advanced analysis tools
• The design complies with IS, BS EN, and OSHA standards, ensuring safety, durability, and operational efficiency

Conclusion

This warehouse design demonstrates the integration of structural innovation and operational efficiency. Using detailed analysis, 3D modeling, and adaptive engineering, we developed a high-performance facility that meets modern industrial needs while ensuring safety and functionality.

About Author

The author Ashly Paul is an experienced structural engineer having 6+ years of experience in structural design, analyzing, and managing diverse structural projects. Skilled in applying engineering principles to ensure safety, functionality, and cost-effectiveness. She has worked on refinery and power plant structures, with a strong focus on innovative and sustainable design solutions. With expertise in structural analysis software, construction practices, and project coordination, she brings both technical knowledge and practical insight to every project.

The post Structural Analysis and Design of Warehouses with Integrated 3D Modelling by Paradigm Engineering appeared first on Paradigm.

Introduction

Circular platforms are an integral part of refinery structures. They are used to support heavy equipment, pipelines, and access systems, while also ensuring safety and stability for operational needs. Preparing accurate designs and detailed drawings for such platforms requires a blend of engineering expertise and advanced modelling tools.

Project Overview

In our company, we have successfully executed many refinery projects involving circular platforms and their foundations. Each project required close coordination with process, piping, and mechanical departments to meet the complex functional requirements.

Snaps from Model and drawings

Structural Analysis and Design

The process begins with a thorough structural analysis. Circular platforms often need to carry eccentric loads from pipelines, vessels, and rotating equipment. Our engineering team carefully evaluates:

• Load combinations (dead, live, equipment, wind, seismic, piping, snow, etc.).

• Foundation interaction, considering soil conditions.

• Dynamic effects, especially where rotating machinery is involved.

We ensure that the design complies with industry standards and project-specific guidelines. The outcome is a safe, efficient structure capable of long-term performance.

Foundations are critical for refinery platforms, especially since they support concentrated loads. Our detailing covers:

• Raft and isolated footing design.

• Anchor bolt layouts and embedment details.

• Reinforcement schedules for concrete works.

• Special detailing for vibration and heavy equipment loads.

Modelling and Detailing

Once the design is finalized, we will be converting concepts into highly detailed 3D models.

• Model primary and secondary steel members with precision.

• Generate detailed connections suitable for fabrication.

• Prepare general drawings showing anchor bolts, pedestals, and reinforcements.

• Create clash-free models by coordinating with piping and equipment layouts.

The 3D model ensures better visualization, quick revisions, and high-quality deliverables for both fabrication and erection.

Deliverables & Results

Upon completion, the following engineering outputs are generated:

• Analysis and Design results

• 3D Model

• 2D general arrangement drawings

• Erection and fabrication drawings

• Design calculation report

Conclusion

Over the years, we have successfully completed many refinery projects involving circular platforms. Each project presented unique challenges, from congested layouts to strict safety requirements. Our combination of structural analysis, design expertise, and Tekla modelling has helped us deliver accurate, constructible, and cost-effective solutions.

By integrating advanced analysis with Tekla modelling, we provide end-to-end solutions that ensure structural safety, fabrication accuracy, and ease of construction on-site.

About Author

Rinshadul Haque K P is a Structural Engineer specializing in design, Tekla modelling, and structural drawing preparation. With hands-on involvement in various industrial projects, including power plants and refineries, the author brings a practical understanding of BIM-based workflows and detailing standards. Passionate about precision and coordination, they focus on delivering efficient, high-quality structural solutions using modern tools and technologies.

Related Services

Explore More Of Our Expertise:

• • Structural Design
  • Geotechnical Consulting Firm
  • Structural Steel Detailing Services
  • Reinforcement Detailing
  • BIM Services
  • Preconstruction CAD Services
  • As Built Services

The post Paradigm’s Approach to Structural Analysis and Modelling of Circular Platforms appeared first on Paradigm.

At Paradigm, we take pride in delivering engineering solutions that challenge conventional boundaries. One of our most technically demanding and rewarding projects involved the construction of two new basement levels beneath a fully standing, heritage-listed building—without altering its facade or disturbing the superstructure.

This was not a theoretical case study or academic concept—it was a real project, executed under live conditions, within an urban setting, and on a historically protected site. Here’s how we did it.

Project Overview

• Building type: Traditional 1920s brick dwelling
• Heritage status: Listed; facade preservation mandated
• Scope:

Add 2 basement levels

Retain external appearance

Modify internal layout to suit new functional needs

• Primary challenge: Introduce substructure beneath an active, load-bearing superstructure

Key Challenges

• Preserving the existing architectural facade and superstructure.
• Avoiding disruption to neighboring properties.
• Handling complex soil conditions (London clay, Lambeth beds, Upper Chalk).
• Managing seasonal groundwater fluctuations.

Our Solution: Engineering Strategy

To ensure safety and preserve architectural integrity, we adopted a top-down construction sequence—a method where excavation happens after supporting the structure above.

Key methods included:

• Contiguous Pile Walling: Installed around the perimeter to act as a retaining system.
• Underpinning: Used where adjacent plot boundaries prevented pile installation.
• Steel Stools & RC Strip Footings: Temporarily supported internal and external load-bearing walls.
• Pile-Supported Ground Slab: Served as a new load transfer platform for the superstructure.
• Sequential Excavation: Carried out after the building was structurally secured from below.

Execution Highlights

1. Pile Construction
   Temporary and permanent piles were installed inside the structure using compact equipment due to headroom limitations.
2. Superstructure Propping
   The building was supported in phases using the Pyford method, ensuring no settlement or cracking during transitions.
3. Ground Floor Slab Casting
   A 350 mm thick ground slab was cast after tying into pile heads. This became the new transfer medium for building loads.
4. Controlled Excavation
   Soil was carefully removed under the slab while monitoring pile reactions and load distribution.
5. Second Basement Construction
   A limited area beneath the first basement was further excavated for a swimming pool and storage, with reinforced concrete walls and slabs providing structural enclosure.
6. Load Transfer Adjustments
   New RC columns were introduced to replace certain temporary piles, ensuring long-term structural integrity.

RC strip footings and steel stools to provide temporary support to existing structure installed

Design & Structural Checks

• All slabs (ground and basement) were verified for punching shear and column load capacity.
• Temporary and permanent states were distinctly analyzed.
• Basement walls were constructed with waterproofing detailing integrated into the contiguous pile system.

Engineering Tools & Coordination

Our team delivered this solution with full integration of British Standards.

Detailed plans, cross-sections, and soil profiles were developed in tandem with the construction team to ensure alignment during execution. Special attention was given to phased work zones and construction tolerances.

Project Results Summary

• Two fully functional basement levels were successfully constructed beneath the existing building without altering or damaging the original superstructure or facade.
• The heritage-listed architectural features were preserved entirely, meeting all conservation requirements.
• Structural integrity was maintained throughout, using a combination of temporary propping, underpinning, and permanent pile-supported systems.
• The ground floor slab now serves as a load-transfer platform, distributing the building’s weight to new piles and reinforced concrete columns.
• Water-tight, reinforced basement enclosures were achieved using contiguous pile walls and 400 mm thick basement walls.
• No settlement or structural distress was observed during or after construction—demonstrating the reliability of the top-down construction and support system.
• The building now features modernized internal layouts, including a swimming pool, storage facilities, and enhanced usability—without compromising its exterior historical character.

Conclusion

This project stands as a testament to our ability to merge innovative engineering with heritage conservation. By combining advanced construction techniques with real-time structural adaptation, we transformed an aged building into a revitalized structure—

With detailed design verification and adaptive construction techniques, it’s possible to meet modern demands without compromising architectural legacy.

About Author

The author Malini Menon P is an experienced Structural Engineer with 25+ years of experience in designing and delivering complex structures for commercial, industrial, and infrastructure projects. Skilled in the design of steel and concrete structures, with deep knowledge of seismic and wind load analysis, as well as international codes and standards. Known for leading multidisciplinary teams, managing design coordination, and resolving technical challenges across all project phases. Proven ability to deliver cost-effective, safe, and compliant structural solutions under tight schedules with excellent quality. Strong track record of mentoring team and fostering collaborative project environments. Adept in both design office work and providing solutions for onsite issues, bringing technical expertise and leadership to every stage of a project.

Related Services

Explore More Of Our Expertise:

• • Structural Design
  • Geotechnical Consulting Firm
  • Structural Steel Detailing Services
  • Reinforcement Detailing
  • BIM Services
  • Preconstruction CAD Services
  • As Built Services

The post Digging Deep: How We Built Two Basements Under a Heritage Building—Without Moving a Brick appeared first on Paradigm.

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