Non-Destructive Testing (NDT) of structures at CHP Phase- 1 and Phase-2, Kusmunda Project.

Amount

Non-Destructive Testing (NDT) of structures at CHP Phase- 1

Visual Survey:- Visual inspection for surface damages, cracks, flaking, coloration, local weakness, etc and their damage classification. Simple tools and instruments like camera with flash light, magnifying glass, binoculars, gauge for crack width measurement, chisel and hammer, etc. shall be used for measuring the distresses. The visual inspection shall largely cover areas of high distress, cracks and their location, moisture, leakage, abnormal variations in structure, algae and fungus growth, efflorescence, etc. Visual inspection would be documented in the form of worksheets, photographic records, and distress over drawing etc.

Rebound Hammer Test:- For dertemining the estimated compressive strength of concrete and uniformily of concrete in terms of surface hardness as per IS 13311 (Part-2)-1992, ASTM C 805-02, BS 6089:1981 and BS 1881: Part 202, BSEN: 13791, also estiblishing correlation chart between rebound hammer and other confirmatory test for estimated in-situ strength of concrete if required.

Ultrasonic Pulse Volocity Test:- For ascertaining the quality of concrete, soundness and density of concrete, uniformily of concrete in terms of density as per IS 13311 (Part-1)-1992, ASTM C 597-83, BS 6089: 1981 and BS 1881: Part 203 and BSEN: 13791.

UT Thickness for Steel section size Asseassment:- Local thickness of a solid/hollow element based on the time taken by the ultrasound wave to return to the surface as per ASTM E797/E797M for section detailing of steel members.

Hardness Testing of metals:- Hardness of Ferrous & Non-Ferrous Metals/Alloys Vickers 80-94, HRC 17.9-68.5 HRB 13.5-99.5, LD 200-900, HB 82.0-940.0 to get the type of material and its estimated tensile strength.

Magnetic Particle Testing:- Ferrous Metals as per ASME Sec-5, 2001 Flaws of surface & Sub Surface for the condition assessment of joints/weldings/surface cracks.

Vibration Analysis: at inside support structure with advanced digital instruments.

Sections Verification:- Verification of steel cross sections, steel members, column distances and all necessery dimension measurement of structure.

General Arrangement Drawing Preparation

Report and Interpretation:- Preparation and submitting comprehensive report consisting of finding from visual inspection, test data, interpreatation of results and final conclusions along with sketch indicating the location of the test.

Structural Stability Analysis:- To check the vulnerability analysis, structural deficiencies and structural stability analysis of overall structure, In the structural analysis of existing structure, we will use the results of NDT of the materials/available properties of existing materials in STAAD Pro V8i or manually whichever is preferred as per IS456, IS 1893 and loading as per IS 875. (For grade of concrete less than M15 manual calculation will be preferred).

Repair Methodology

Stability Certification by Structural Chartered Engineer

Non-Destructive Testing (NDT) of structures at CHP Phase- 2

Visual Survey:- Visual inspection for surface damages, cracks, flaking, coloration, local weakness, etc and their damage classification. Simple tools and instruments like camera with flash light, magnifying glass, binoculars, gauge for crack width measurement, chisel and hammer, etc. shall be used for measuring the distresses. The visual inspection shall largely cover areas of high distress, cracks and their location, moisture, leakage, abnormal variations in structure, algae and fungus growth, efflorescence, etc. Visual inspection would be documented in the form of worksheets, photographic records, and distress over drawing etc.

Rebound Hammer Test:- For dertemining the estimated compressive strength of concrete and uniformily of concrete in terms of surface hardness as per IS 13311 (Part-2)-1992, ASTM C 805-02, BS 6089:1981 and BS 1881: Part 202, BSEN: 13791, also estiblishing correlation chart between rebound hammer and other confirmatory test for estimated in-situ strength of concrete if required.

Ultrasonic Pulse Volocity Test:- For ascertaining the quality of concrete, soundness and density of concrete, uniformily of concrete in terms of density as per IS 13311 (Part-1)-1992, ASTM C 597-83, BS 6089: 1981 and BS 1881: Part 203 and BSEN: 13791.

UT Thickness for Steel section size Asseassment:- Local thickness of a solid/hollow element based on the time taken by the ultrasound wave to return to the surface as per ASTM E797/E797M for section detailing of steel members.

Hardness Testing of metals:- Hardness of Ferrous & Non-Ferrous Metals/Alloys Vickers 80-94, HRC 17.9-68.5 HRB 13.5-99.5, LD 200-900, HB 82.0-940.0 to get the type of material and its estimated tensile strength.

Magnetic Particle Testing:- Ferrous Metals as per ASME Sec-5, 2001 Flaws of surface & Sub Surface for the condition assessment of joints/weldings/surface cracks.

Vibration Analysis: at inside support structure with advanced digital instruments.

Sections Verification:- Verification of steel cross sections, steel members, column distances and all necessery dimension measurement of structure.

General Arrangement Drawing Preparation

Report and Interpretation:- Preparation and submitting comprehensive report consisting of finding from visual inspection, test data, interpreatation of results and final conclusions along with sketch indicating the location of the test.

Structural Stability Analysis:- To check the vulnerability analysis, structural deficiencies and structural stability analysis of overall structure, In the structural analysis of existing structure, we will use the results of NDT of the materials/available properties of existing materials in STAAD Pro V8i or manually whichever is preferred as per IS456, IS 1893 and loading as per IS 875. (For grade of concrete less than M15 manual calculation will be preferred).

Repair Methodology

Stability Certification by Structural Chartered Engineer

Total impact of GST for the purpose of CTC

Capstone Consultants Private Limited (BID ID -1092163)

B J Mehta Architectural and Structural Consultamts Pvt Ltd (BID ID -1091769)