HAMOSAN key professional employees have the level of expertise and a combination of the skills, which are necessary to find unique solutions to every technical challenge. These individuals are supported by engineers, technologists, technicians, draughtsman, construction technicians as well as project support and
administrative personnel. Ongoing professional development of HAMOSAN (SL) LTD
employees ensures that the company remains at the cutting edge of the latest technological developments in the Civil and Structural Engineering discipline.
HAMOSAN (SL) LTD remains at the forefront of world-class engineering best practices and is proud to be a respected and actively involved member of several Sierra Leoneans associations within the engineering fraternity


Increased competition requires shorter project lead times and a reduction in cost structures. Riskier business environments require better risk mitigation strategies. Proper Engineering Management has become essential to ensure that project outcomes address those factors that may impact a project’s development. HAMOSAN (SL) LTD uses Engineering Management to improve each client’s position in the marketplace and to implement its total value proposition: Partnerships with clients, the creation of project specific
teams and integration of all potential project factors.

Engineering Management includes:
• Investigations and Reports
• Feasibility, Concept and Preliminary Design Studies
• Concept and Design Development, Basic Engineering (FEED)
• Management and Integration of Detail Engineering activities
• Bid Documentation and Bidding Process
• Construction Contract Administration
• Construction Contractor Management


HAMOSAN (SL) LTD wealth of experience in structural analysis and design ensures versatility and efficiency in the use of steel, concrete, masonry and composite materials. The HAMOSAN (SL) LTD design teams use a practical approach to ensure that engineering specifications result in ease of construction and cost control.

Structural Engineering Services include:

• Structural Analysis and Design
• Specialized Analysis, considering seismic, blast resistant and other
dynamic loading conditions
• Engineering, Design and Draughting of structural steel, concrete and masonry
• Structural Audits and Assessments
• Foundation Engineering
• Concrete Technology
• Concrete Rehabilitation
• Corrosion Protection
• Building Structural Design and Specifications


New and existing road networks necessitate the correct balance between capital expenditure and maintenance interventions to optimize the economic lifespan of each road. HAMOSAN (SL) LTD weighs alternative designs against traffic projections and lifecycle costs to recommend appropriate pavement management strategies to ensure that its clients achieve the maximum return on their investment.

Roads & Transport Engineering Services include:

• Route Determination
• Geometric Design
• Pavement Design
• Road Rehabilitation
• Parking Areas
• Railways and Private sidings
• Traffic Engineering
• Pavement Management


HAMOSAN is proficient in the Operating and Maintenance Support of Heavy Industrial Plant operations. Its expertise and experience includes: Engineering and design, preparation of construction drawings, Engineering and design for shutdown projects, Periodic structural inspections of existing plants and Structural inspections during plant shutdowns.

Operating & Maintenance Services include:

• Rehabilitation and replacement of corroded steel structures
• Dam maintenance and statutory inspections
• Concrete rehabilitation/replacement
• Visual inspection of pipelines
• Road and services rehabilitation and maintenance
• Improved access to operating and maintenance valves and equipment
• Prioritization and implementation of civil and structural maintenance
• Modifications to existing structures to improve means to remove equipment
• Extensions and modifications to process plant infrastructure
• Extensions and modifications to process plants
• Building modifications, extensions and upgrading


A geographic information system (GIS) is any system that captures, stores, analyses, manages, and presents data that are linked to location. GIS is a special-purpose digital database, in which a common spatial coordinate system is the primary means of reference.

Comprehensive GIS requires a means of:
• Data input from maps, aerial photos, satellites, surveys and other sources
• Data storage, retrieval and query
• Data transformation, analysis and modeling (including spatial statistics)
• Data reporting such as maps, reports and plans
HAMOSAN has recognized the opportunity to apply this technology to initiate and develop a Bentley Map Software tool that can assist in the facilities management of complex and technologically advanced infrastructure such as process plants, power stations and other industrial developments.

GIS Expertise and Experience include:

• Using the Bentley Map together with Microsoft Access and SQL Server
• Accessing GIS with web browser tool
• Redrawing input from existing drawings to CAD and linking to GIS
• Converting data between different Geodetic and Local Coordinate systems
• Development, administration and maintenance of the GIS database
• Linking existing and new electronic data to GIS
• Populating existing databases to the GIS and creating linked objects to location infrastructure

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