What is the best test to find out the bearing capacity of the soil for foundation design purpose? The most recognised test is the Californian Bearing Test. Comminly referred to as the CBR test. It is easily performed and gives comsistent results The test involves applyiny a progressively increasig load to a plate and measuring the deflection of the plate i. It should be borne in mind however that all tests of this type do assume a depth of stratum beneath the test zone that is consistent over the Foundation area; therefore a series of tests will need to be carried out until an overall or average value is determined. Rough and ready on the move examples of the CBR technique involve jacking the plate downwards using the underframe of a large truck,not the most scientific way, but when out in the field and with an experienced operator a useful approach, you will appreciate that getting the stable reference datum is the tricky bit!
The simplest foundation, a padstone. The Ethnographic Open-Air Museum of Latvia Earthfast or post in ground construction [ edit ] Buildings and structures have a long history of being built with wood in contact with the ground. Perhaps the simplest foundation is the padstone, a single stone which both spreads the weight on the ground and raises the timber off the ground.
Research at Berkeley more than three decades ago gave new insight into the behaviour of axially-loaded piles in clay. Numerous experiments and analytical studies performed since, many of which have been supported by the oil industry with respect to offshore platforms, have added significantly to a better understanding of the problem. A brief discussion is presented to elucidate the factors involved in the interaction between a pile and the clay with a view of establishing fundamental concepts. Models are described that serve as guidance to further research.