Mackintosh Probe Test Soil Bearing Capacity

Mackintosh probe is a tool used for research purposes especially for soil investigation.

Mackintosh probe test soil bearing capacity. Jones2 1geotechnical group civil engineering department university of tehran po box. Afakher ut ac ir 2geotechnical group university of newcastle upon tyne newcastle upon tyne uk d ynamic probing can have an important role in. Abstract the use of the mackintosh probe for site investigation in soft soils a. A mackintosh probe is a lightweight portable penetrometer that is designed to be a tool to investigate the soil bearing capacity.

Because of the light hammer weight the mackintosh probe is limited in the depths and materials it can penetrate clayton c r i matthews m c. Mackintosh probe testing the purpose of carrying out the mackintosh probe test is to achieve a reasonable accurate value of the soil bearing capacity at different location within the site. Excavate a pit of required depth. The results reveal that mackintosh probe test as a conventional method seems to fit with seismic method in determining the bearing capacity of shallow foundation.

One set of mackintosh probe equipment was used to investigate the bearing capacity of the untreated peat soil. The tool consist of high yield steel rods each of length approximately 120cm that are connected each other by 25mm outer diameter couplings with a 27 9mm diameter of a 30o apex angle. Mackintosh probe test is most widely used in situ test to measure the soil bearing capacity of different layers in terms of n value. This test is very useful to find out the bearing capacity of soil upto 18 meter.

The result obtain from the test provides a rough estimation of the soil layer at a point. And simons n e 1995. This simple and quick field test will give you a rough idea of bearing capacity of soil. Tools can be pushed into or pulled out of the soil using a lifting driving tool.

This test is very useful to find out the bearing capacity of soil upto 18 meter. One set of mackintosh probe equipment was used to investigate the bearing capacity of the untreated peat soil. Preferably equal to the depth of foundation take a solid ball or square cube of known weight and dimension. 11365 4563 tehran iran e mail.

12 7 mm diameter solid rods and a 4 5 kg dead weight with standard drop height. The difference between the results of allowable bearing capacity based on the empirical method and mackintosh probe test for the site a and b are 2 5 and 2 7 respectively. It is a convenient method to use for any site inaccessible to conventional testing equipments.