National Bank For Agriculture And Rural Development Tender

Carbonation Depth Test Preparing the surface of RCC structural member such as beams, columns, slabs, water tank walls & slab etc. by chipping the plastered surface/ finishing/ cladding to expose the concrete, cutting etc. as per relevant code, and conducting carbonation test at various depth as directed by consultant using phenolphthalein of specified concentration to assess depth of carbonation. The ratio of Carbonation depth to cover depth is also to be measured to check the intensity of carbonation attack on steel bar. The quoted rate shall be inclusive of cost of all tool & tackles, restoration of the test area/spots after conduct of test with matching paint, associated sundry work etc. as well as all applicable taxes

 Electro Chemical Half Cell Potential Test for corrosion mapping Measuring the Half Cell Potential reading with wheel electrode at the nodes of pre-marked grid points on concrete surface in a suitable grid for determining the probability of corrosion activity of embedded steel reinforcement in concrete with specified half-cell electrode in accordance with latest IS code and after moistening concrete surface with water. The quoted rate shall include surface preparation, moistening concrete surface for assessing the percentage risk of corrosion in the reinforcement, measuring the half-cell/surface potentials at selected locations on RCC members of the structures covered under the study to understand the extent of reinforcement corrosion and contour mapping of corrosion, plotting the half-cell potential readings in graphical presentation with potential contours plotted in terms of probable risk of corrosion of steel bar in all the three categories of flats with proper documented report. The quoted rate shall be inclusive of cost of all tool & tackles, restoration of the test area/spots after conduct of test with matching paint, associated sundry work etc. as well as all applicable taxes.

 Chemical test for Chloride and pH Value Chemical test for chloride and PH from drilled core samples

Concrete Core Extraction and Testing Deciding the location by using “Rebar Locator/Cover Meter” and Preparing the structural members as directed to expose the concrete, cleaning the area with blower /wire brush and taking out the concrete sample with cutter and testing as per standard specification including analysis of the test result & preparation of separate report for each building with observations and recommendations for remedial measures if any.

Consultancy Charges Preparation of building wise structural audit report which includes, a. The findings from detailed visual inspection as in item 1 b Nondestructive test results c Suggested remedial measures d Bill of quantities item wise & detailed specification with cost estimate for each building All based on the visual inspection, NDT, assessment as per item 1 and 2. a Provding fitness certificate post completion of renovation works