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DAPSON PRIME

Equipment and laboratory

The rigs, instruments and laboratory we own, run and maintain ourselves.

Drilling· 2 types, 5 units

  • cable-percussion rig

    Drilling

    Cable-percussion (shell and auger) rig

    × 3 units

    Capacity
    Boreholes to about 40 m
  • Track driven mobile drill rig in field

    Drilling

    Rotary rig, truck or skid mounted

    × 2 units

    Capacity
    Soil and weathered rock, to about 50 m

In-situ testing· 2 types, 4 units

  • Cone Penetration Test rig with piezocone

    In-situ testing

    Cone Penetration Test rig with piezocone

    × 1 unit

    Capacity
    20 t reaction
  • SPT trip hammer

    In-situ testing

    Standard Penetration Test kit with automatic trip hammer

    × 3 units

    Capacity
    63.5 kg hammer, 760 mm drop

Sampling· 1 type, 2 units

  • piston samplers

    Sampling

    Thin-wall tube and piston samplers for undisturbed samples

    × 2 units

    Capacity
    Soft to firm clays

Geophysics· 2 types, 2 units

  • Multi-electrode resistivity imaging system

    Geophysics

    Multi-electrode resistivity imaging system

    × 1 unit

    Capacity
    48 electrodes
  • Seismograph for refraction and MASW surveys

    Geophysics

    Seismograph for refraction and MASW surveys

    × 1 unit

    Capacity
    24 channels

Laboratory· 1 type, 1 unit

  • Triaxial, oedometer, direct shear, Atterberg limits, sieve and hydrometer, compaction, unconfined compression

    Laboratory

    Triaxial, oedometer, direct shear, Atterberg limits, sieve and hydrometer, compaction, unconfined compression

    × 1 unit

    Capacity
    Full classification and strength suite
    Supplied as
    1 set

Piling· 2 types, 2 units

  • Hydraulic bored piling rig

    Piling

    Hydraulic bored piling rig

    × 1 unit

    Capacity
    600 to 1,200 mm diameter, to about 40 m
  • Service crane

    Piling

    Service crane, casing, tremie pipes, bentonite mixing plant

    × 1 unit

    Capacity
    Supports one rig
    Supplied as
    1 set

Pile testing· 2 types, 2 units

  • Low-strain pile integrity tester

    Pile testing

    Low-strain pile integrity tester

    × 1 unit

    Capacity
    All pile types
  • Static load test system (jacks, reaction frame, gauges)

    Pile testing

    Static load test system (jacks, reaction frame, gauges)

    × 1 unit

    Capacity
    Up to 1,000 t test load

Survey and support· 1 type, 1 unit

  • Total station, GPS, generators, dewatering pumps

    Survey and support

    Total station, GPS, generators, dewatering pumps

    × 1 unit

    Capacity
    Setting out and site support
    Supplied as
    1 set

Laboratory

Laboratory tests

Our laboratory turns site samples into the parameters engineers design with.

  • Moisture contentClassification
  • Atterberg limitsPlasticity
  • Particle size distribution (sieve)Grading
  • Hydrometer analysisFine grading
  • Bulk and dry densityDensity
  • Specific gravityClassification
  • Compaction (Proctor)Earthworks
  • California Bearing Ratio (CBR)Pavements
  • Unconfined compressionStrength
  • Triaxial (UU and CU)Strength
  • Oedometer consolidationSettlement
  • Direct shearStrength

Sample report

See what a borehole log looks like

Every log we issue follows the same layout, so engineers can read it at a glance.

  • Depth, strata descriptions and legend
  • SPT N-values every 1.5 m
  • Samples taken and groundwater strikes

Request a quote

Planning a build in Lagos? Start with the ground.

Tell us where the site is and what you plan to build. An engineer will come back with a proposed scope of investigation and a quote.