Structural Design Consultants in Bangladesh
Primary keyword: structural design consultants in Bangladesh
Every building depends on its structural system to safely carry its own weight, the loads placed on it, and the forces of wind and earthquake it may face over its service life. Structural design is the engineering process that determines this system — the foundation, columns, beams, slabs, bracing and connections — so that a building is safe, serviceable and buildable within a reasonable budget.
Imarat Designers & Consultants Ltd. provides structural design services for reinforced concrete (RCC), steel and composite structures across Bangladesh, including residential, commercial, institutional and industrial buildings.
What Does Structural Design Involve?
Structural design converts an architectural concept into a safe, buildable structural system. It typically includes:
- Selection of an appropriate structural system (RCC frame, steel frame, composite, load-bearing wall, or a combination)
- Preliminary sizing of structural members and cost/feasibility input at concept stage
- Load assessment — dead loads, live loads, wind loads, seismic loads, and for industrial buildings, machinery, storage and equipment loads
- Structural modelling and analysis using engineering software such as ETABS, SAP2000 or STAAD.Pro
- Design of the foundation system, based on soil investigation data
- Design of columns, beams, slabs, shear walls, bracing and connections
- Preparation of structural drawings, reinforcement/fabrication details and design calculations
- Coordination with architectural, electrical and MEP design to resolve clashes and openings
- Support during authority submission and, where required, during construction
Structural Design Process
1. Project Information and Site Data
The process begins with collecting architectural drawings, the intended use and loading of the building, the site location and, where available, soil investigation data. For industrial buildings, machinery layout and equipment loads are collected at this stage.
2. Preliminary Structural Scheme
A structural system and grid are proposed, considering the architectural layout, span requirements, loading, site constraints and cost-efficiency. For industrial buildings, this stage often compares RCC and steel framing options.
3. Structural Modelling and Analysis
The structure is modelled in appropriate engineering software, and analysed under the applicable load combinations required by BNBC 2020 and, where relevant, other applicable design standards.
4. Member Design and Detailing
Columns, beams, slabs, foundations, bracing and connections are designed and detailed based on the analysis results, verifying strength, serviceability (such as deflection and crack control) and stability.
5. Drawings and Documentation
Structural drawings, reinforcement or fabrication details, schedules and design calculations are prepared for authority submission, tendering and construction.
6. Coordination and Construction Support
The structural design is coordinated with architectural and MEP requirements, and, where engaged, the structural consultant supports the contractor and site team during construction with clarifications and design queries.
Structural Systems We Design
RCC (Reinforced Concrete) Structures
Reinforced concrete framing remains the most common structural system for residential, commercial and many industrial buildings in Bangladesh. See our related article on RCC building design.
Steel Structures
Steel and pre-engineered building (PEB) systems are widely used for factory sheds, warehouses and large-span industrial buildings where speed of construction and long clear spans are priorities. See our related article on steel structure design.
Composite and Hybrid Systems
Some projects benefit from a combination of RCC and steel — for example, an RCC substructure with a steel superstructure — selected based on span, loading, schedule and cost considerations specific to the project.
Codes and Standards
Structural design in Bangladesh is governed primarily by the Bangladesh National Building Code (BNBC 2020), which sets out loading provisions, material design requirements and detailing rules for RCC and steel structures. Where BNBC 2020 references or aligns with international standards — such as ACI 318 for reinforced concrete and AISC 360 for structural steel — these are also considered as applicable, together with relevant Bangladesh geotechnical and seismic zoning requirements.
For factory and industrial buildings supplying international buyers, structural design and any subsequent assessment may also need to satisfy requirements under compliance programmes such as the RMG Sustainability Council (RSC) or the Department of Inspection for Factories and Establishments (DIFE), depending on the applicable jurisdiction.
Structural Design for Industrial and Factory Buildings
Industrial structural design in Bangladesh carries specific considerations beyond typical commercial buildings:
- Machinery and equipment loads, including vibration where relevant
- Storage and material handling loads, which can be significant and change over the building's life
- Large clear spans for production floors, often favouring steel or PEB systems
- Future expansion — designing foundations and framing with reasonable allowance for additional floors or extensions where planned
- Coordination with fire safety, electrical and plumbing/MEP design, particularly for compliance-driven projects
Where an existing building's structural adequacy needs to be verified rather than newly designed, this falls under Detailed Engineering Assessment (DEA) rather than new structural design.
Why Choose Imarat for Structural Design?
Imarat Designers & Consultants Ltd. is an independent multidisciplinary engineering firm in Bangladesh, with a team of more than 50 engineers and professionals covering structural, architectural, electrical, fire safety and compliance disciplines.
Our structural design capability is supported by:
- Experienced structural engineers working across RCC, steel and composite systems
- Structural modelling and analysis using industry-standard software
- Design carried out with reference to BNBC 2020 and applicable international standards
- Coordination with our own architectural, electrical and testing teams under one engineering team
- Experience across residential, commercial, institutional and industrial/factory buildings
See our full range of engineering services, including structural, architectural, electrical, fire safety, testing and compliance work.
Conclusion
Structural design determines whether a building will safely carry the loads placed on it over its lifetime, and how efficiently it can be built. Good structural design balances safety, serviceability, buildability and cost, based on accurate site data, applicable codes and sound engineering judgement.
Whether you are planning a new commercial building, an industrial shed or a multi-storey factory, Imarat Designers & Consultants Ltd. provides structural design services suited to the specific requirements of your project and site.
Planning a new building or structure? Contact Imarat to discuss your structural design requirements.
Frequently Asked Questions About Structural Design
What information does a structural designer need to start?
At minimum, the architectural drawings or layout, the intended use and loading of the building (including any machinery or storage loads for industrial buildings), the site location, and geotechnical/soil investigation information. Where these are not yet available, the structural consultant can advise on what needs to be arranged before design can proceed.
Do I need a soil test before structural design can start?
A soil investigation report is normally required to design the foundation reliably, since foundation type and capacity depend on the actual subsoil conditions at the site. Design of the superstructure can sometimes begin in parallel, but foundation design should be based on verified soil data rather than assumptions.
Can a structural designer work with an architect I've already appointed?
Yes. Structural design is normally coordinated with the architectural design, whether the architect is in-house, a separate consultant, or the client's own team. Imarat can work from an existing architectural design or provide architectural and structural design together.
Does the structural design need to be checked or vetted by another engineer?
It is not always mandatory, but an independent structural design vetting or peer review is common practice for larger or more complex projects, or where a bank, buyer or authority requests independent verification. Imarat also offers structural design vetting as a separate service.
How long does structural design take?
Duration depends on the building size, structural system, number of floors, site conditions and how quickly architectural and geotechnical inputs are finalised. A project-specific schedule should be agreed at the start of the assignment.