How many piles are integrity tested?

The pile head shall be fr ee from water, dirt or other debris. The concrete at the pile top surface must be relatively smooth and provide sufficient space for attaching the motion sensing device and for the hammer impact area. _____\% (20\%, 50\%, ___\%, 100\%) of all piles shall be integrity tested.

What is integrity test in civil engineering?

Pile integrity test (PIT) is a non-destructive method of testing of piles that is used for qualitative evaluation of the physical dimensions, continuity, and consistency of materials in a bored (cast in-situ) pile. This test is very important for quality control and quality assurance of piles at great depth.

How is pile integrity test carried out?

Pile Integrity Test (PIT) is normally performed by striking the pile head with a light hand-held hammer and recording the response of the pile using a motion transducer (i.e. accelerometer) coupled to the pile head. The hammer strike (blows) generate compressive stress wave that will travel through the pile.

How long does a pile integrity test take?

A minimum sampling rate of 25 kHz, and time array length of 100 ms is generally good for evaluating most piles. In the event of using an accelerometer, integration of test results are used to show the measurements in velocity format.

Is code for bored cast in situ piles?

The bored cast-in-situ piles having bulb(s) known as under-reamed piles are covered in IS : 2911 ( Part III )-1980*. 2.

What is low strain pile integrity test?

Low Strain Impact Integrity Testing is a non-destructive pile testing method for integrity assessments of augered cast-in-place piles, drilled shafts or driven concrete or timber piles. If major defects exist, test results may be interpreted to estimate their magnitude and location.

What is situ pile?

What is cast in situ concrete pile? Bored cast in situ pile is constructed by digging a hole in the ground by suitable means such as percussive or rotary method with the use of temporary or permanent casing or drilling mud. After that, the construction is finalized by filling the hole with reinforced concrete.

What is insitu casting?

Cast-in-situ is the conventional method of concreting. In this Method concrete is prepared on the site and poured in formwork and then cured. It often requires more labours and even takes longer time. Precast concrete is the new method concreting used all over the world extensively.

What is test pile in construction?

[′test ‚pīl] (civil engineering) A pile equipped with a platform on which a load of sand or pig iron is placed in order to determine the load a pile can support (usually twice the working load) without settling.

What do you mean by bored cast in situ piles?

Bored piles are steel reinforced concrete elements cast in situ used to transfer high loads through soil to deeper, more competent soil or rock stratum. Temporary casings are often used to maintain the integrity of the excavated shaft during the construction process and provide pile hole protection for personnel.