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Strat Engineering Ltd

Introduction to Geotechnical Engineering

Geotechnical engineering is the branch of civil engineering concerned with the engineering behaviour of earth materials. It involves the systematic application of techniques that allows construction on, in, or with geomaterials, i.e., soil and rock. It uses principles of soil mechanics, rock mechanics, and engineering geology to investigate subsurface conditions and materials. It uses principles of […]

Concrete Cube Strength

This procedure describes the method for determining the compressive strength of concrete cubes. The Concrete Strength is normally tested at an age of 7, 14, and 28 days. Required equipment Test Procedure Type of Failure Record any unusual features in the type of failure. Refer to the figures below for examples of satisfactory failures and […]

Concrete Slump Test

Concrete slump test is to determine the workability or consistency of concrete mix prepared at the laboratory or the construction site during the progress of the work. It measures concrete consistency between batches. The test is popular due to the simplicity of the apparatus used and the simple procedure. A slump test should be done before making […]

Plate Load Test

The plate load test is performed on-site to determine the ultimate bearing capacity of soil at the desired depth for designing shallow foundations. Data from the plate load test is helpful to confirm the design assumptions made from soil tests or can be used as a design parameter. The plate load test is a field test, […]

Determination of the pH value – Electrometric method

The method can be used for determining the pH value of a sample of ground water. This is the procedure for determining the pH value by the electrometric method, which gives a direct reading of the pH value of a soil suspension in water. Required equipment •        A balance readable to 0.01 g. •        A […]

Crumb test

The Crumb test is a simple indicator test that is recommended for initial field identification of dispersive soils. The crumb test provides a simple, quick method for field or laboratory identification of a dispersive clayey soil. Dispersive clay soils are identified by observing the behaviour of a few crumbs of soil placed in distilled water. […]

Types of Triaxial Test

There are three fundamental triaxial tests that can be conducted in the laboratory, each allowing the soil response for differing engineering applications to be observed: Unconsolidated Undrained (UU) UU triaxial test is also called total stress test since effective stresses in the specimen are not known. With this method, the shear strength is measured in […]

Triaxial test – Undrained Shear Strength

A triaxial test is performed on a cylindrical core soil sample to determine its shear strength. The triaxial test attempts to replicate the in-situ stresses (stresses in the original place the soil sample was taken) on the core soil sample. The triaxial test is primarily designed to determine the shear strength parameters of a soil […]

One-Dimensional Consolidation (Oedometer test)

Consolidation is the gradual reduction in the volume of a fully saturated soil of low permeability due to drainage of some of the pore water, the process continuing until the excess pore water pressure set up by an increase in total stress has completely dissipated; the simplest case is that of one-dimensional consolidation, in which […]

Geotechnical drilling

Geotechnical drilling also known as geotechnical boring is a site investigation technique involving the drilling of any narrow shaft bored in the ground either vertically or horizontally designed to uncover the physical properties surrounding a construction site. This process involves evaluating the soil, rock, groundwater, and overall conditions within a given depth and location. This vital work ensures construction […]