Professional Engineering & Geotechnical Services
1. Geotechnical, Materials & Pavement Services
Gallcons Engineering Ltd provides comprehensive geotechnical and materials engineering services, delivering practical, safe, and cost-effective solutions tailored to the unique ground conditions of each project. We specialize in roads, highways, bridges, dams, and other critical infrastructure, particularly in challenging soils and arid environments.
A) Alignment Investigations & Material Site Assessments
We provide specialized alignment investigation services for roads, highways, and infrastructure corridors to ensure optimal routing, constructability, and subgrade performance. Our experienced team integrates field data, laboratory testing, and geotechnical analysis to support safe, durable, and cost-effective designs.
• Alignment reconnaissance and field surveys
• Borehole drilling, sampling, and geological logging along the alignment
• Particle size distribution, soil classification, and CBR testing
• Compaction testing (T99, T180) and swell analysis
• Material testing of sand, aggregates, and water for construction suitability
b) Geotechnical Investigations & Engineering Services
We conduct detailed site investigations and laboratory testing to characterize soils and rocks for infrastructure development.
• Subsurface exploration (boreholes, sampling, logging)
• In-situ testing: SPT, CPT, DCP, and CBR
• Soil and rock laboratory testing (index properties, strength, deformation, permeability, consolidation, and rock quality)
• Foundation analysis and design: shallow and deep foundations (pad, raft, pile)
• Ground improvement solutions: compaction, stabilization, grouting
c). Pavement Evaluation & Design
We provide structural evaluation and design of pavements, optimizing performance and longevity under local conditions.
Soil classification and chemical testing.
• Visual condition surveys and pavement distress assessment
• Trenching, core cutting, and DCP testing
• Subgrade characterization and pavement thickness design
• Analysis, reporting, and recommendations for rehabilitation or new construction
d). Specialized Earthworks & Slope Stability
We offer engineering solutions for earth structures, ensuring safety, stability, and performance.
• Stability analysis for cut and embankment slopes
• Retaining wall design and ground reinforcement
• Embankment and earth dam geotechnical support
2. Materials Testing
Gallcons Engineering Ltd provides specialized materials testing to ensure construction materials meet performance, durability, and safety requirements. Our services cover soil, aggregates, and concrete, helping clients make informed engineering decisions and ensuring compliance with ASTM, BS, AASHTO, and Kenyan standards.
a. Soil Testing
b. Aggregate Testing
c. Concrete Testing
- We characterize soils to guide foundation, pavement, and earthworks design.
- Soil Classification (AASHTO and USCS systems)
- Particle Size Distribution /sieve analysis
- Atterberg Limits
- Moisture Content & Density
- CBR Testing
- Compaction Testing
- We evaluate aggregates for concrete, asphalt, and earthworks to ensure durability and performance.
- Aggregate Crushing Value (ACV)
- Aggregate Impact Value (AIV) durability
- Los Angeles Abrasion Test
- Particle Size Distribution / Sieve Analysis
- Specific Gravity & Water Absorption
- Flakiness & Elongation Index
- We test concrete to ensure structural integrity.
- Slump Test – workability
- Compressive Strength Test (cubes and cores)
- Mix Design Verification
3. Structural Integrity Assessment
We assess the safety and longevity of both new and existing structures to ensure continued performance and code compliance:
• Structural condition surveys and compliance audits.
• Non-destructive testing (NDT) - Schmidt hammer, UPV, and core sampling.
• Structural rehabilitation and strengthening.
• Load capacity evaluations for renovations, additions, or change of use.
4. Quality Control & Site Supervision
- We deliver independent quality control and technical supervision services to ensure that construction materials, workmanship, and processes comply with approved specifications and engineering standards throughout project execution.