Setting out of Foundations

Setting out of Foundations Before Commencement, of the excavation of trenches for foundation, a setting out plan is prepared on paper. The setting out plan is a dimensioned ground floor plan, usually drawn to scale of 1:50. The plan is fully dimensioned at all breaks and openings...

Read More

Tagged As: ,

Machine Foundation

Machine Foundation The design of machine foundation involves careful study of the vibration characteristics of the foundation system. Relevant data required for the design and construction of the machine foundation of machine should be obtained from the manufacturer of the machin...

Read More

Tagged As: ,

Foundations on Sloping Ground

Foundations on Sloping Ground To avoid sloping foundation bed or excessive depth of excavation at the top end, stepped foundation is necessary to be provided in a considerably sloping ground. Foundations on Sloping Ground is achieved by cutting the portion of the foundation trenc...

Read More

Tagged As: ,

Raft or Mat Foundations

Raft or Mat Foundations In case of soils having low bearing capacity, heavy structural loads are usually supported by providing raft or mat foundations. Also if the structure is vulnerable to subsidence on  being located in mining area or due to uncertain behaviour of its sub-so...

Read More

Tagged As: ,

Combined Footings

Combined Footings Combined footings are constructed in a way that the centre of gravity of the supporting area coincides the line of centre of gravity of the two column loads. These are usually in the form of rectangular or trapezodial in shape. Rectangular shape is adopted where...

Read More

Tagged As: ,

Grillage Foundations – Steel & Timber Grillage

Grillage Foundation – Steel & Timber Grillage Grillage foundation is used when heavy structural loads from columns, piers or stanchions are required to be transferred to a soil of low bearing capacity.  Grillage foundation is often found to be lighter and more economic...

Read More

Tagged As: ,

Inverted Arch Foundation

Inverted Arch Foundation Inverted Arch Footing/Foundation is used to be provided for multi-storeyed buildings in olden times. However, with the advent of reinforced cement concrete construction practice, inverted arch foooting is rarely done these days. One of the drawbacks in th...

Read More

Tagged As: ,

Wall Footings or Wall Foundations

Wall Footings Wall Footings consists of several courses of bricks, the lowest course being usually twice the breadth of the wall above. The increased base width of the wall is achieved by providing 5 cm (½ brick length) offsets on either side of the wall. The depth of each cours...

Read More

Tagged As: ,

Methods to Improve Bearing Capacity of soils

Some of the methods to improve bearing capacity of soils: Increasing the depth of the footing is the simplest method of improve the bearing capacity of soil, This method is restricted to sites where the sub-soil water level is much below and deep excavations do not increase the c...

Read More

Tagged As: , , ,

Penetration Test Method Determine Bearing Capacity of Soils

Penetration Test Method – Standard Split Spoon Sampler The equipment used for this test may be a standard split spoon sampler, a cone or other specially shaped tool. The test consists of measuring the resistance offered by the soil to the penetration of the test-tool under ...

Read More

Tagged As: , , ,