Sheet GC · Civil engineering
Roads and structures built to last.
Road design, bridges, buildings and site utilities: from feasibility to detailed design, then site supervision.
Study stagesFeasibility · preliminary · detailed · construction · supervision
At a glance
- For whom
- Public clients, local authorities, contractors, engineering firms
- Main deliverables
- Study reports
- Drawings
- Calculations
- Quantities / BoQ
- Tender docs
- How to start
- Send the location, the expected study stage and available data.
GC-01 · Road design
Road design
A road alignment depends on terrain, soils, water and traffic. We define the road geometry and pavement structure from surveys, geotechnical tests and traffic counts.
- Horizontal and vertical alignmentCentreline, radii, gradients, plan-profile coordination.
- Cross-sections and earthworksCarriageway, shoulders, crossfall, cut and fill.
- Pavement designTraffic, bearing capacity, local materials such as laterite.
- Road drainage and signageDitches, crossings, junctions, signage.
Deliverables you receive
Reference Ntoum – Kougouleu road (RN1), Gabon: detailed design over 81 km, 94 culverts- Design report
- Alignment plan
- Long & cross-sections
- Pavement design note
- Earthworks volumes
- Quantities & BoQ
GC-02 · Bridges & structures
Bridge and structure design
Bridges, box culverts, pipe culverts and retaining walls, designed from design flows, soil investigations and local construction constraints.
- Choice of structureBox culvert, slab or girder bridge depending on span and flows.
- Hydraulic levels and foundationsClearance, scour, footings or piles.
- Assessment of existing structuresInspection, defects, repair or strengthening.
Deliverables you receive
Reference 40 m RC two-span girder bridge, Kpegadjin, Togo- Hydraulic note
- Structural calculations
- Formwork drawings
- Reinforcement drawings
- Inspection report
GC-03 · Buildings, utilities & supervision
What you receive, service by service
| Service | Scope | Deliverables |
|---|---|---|
| Buildings | Reinforced concrete structure, load path, foundations | Calculations, formwork and reinforcement drawings |
| VRD | Internal roads, storm and foul water, water supply | Network drawings, profiles, quantities, BoQ |
| Tendering | Technical tender documents | Specifications, price schedule, BoQ, drawings |
| Site supervision | Compliance, testing, measurements, handover | Progress reports, test reports, handover certificates |
A road, a bridge or a building to design?
Tell us the location, the study stage and the data you already have.