structure audit of bldg no np-247 at dinjan under ge ( af ) mohanbari , rebound hammer for determining the estimated compressive strength of concrete and uniformity 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, bs-en:13791, also establishing correlation chart between rebound hammer and other confirmatory test for having estimated in-situ strength of concrete if required. in absence of the confirmatory test strength data will be generated on the basis of empirical formula ( obtained from the calibration chart ) but those results will have 25% variation as per is 13311 part 2 1992 , ultra sonic pulse velocity for ascertaining the quality of concrete, uniformity of concrete in terms of soundness and density of concrete as per is 13311 ( part-1 ) -1992, astm: c597-83, bs 6089: 1981 and bs 1881: part 203 and bs en: 13791; also establishing correlation chart between uspv and other confirmatory test for having estimated in- situ strength of concrete if required , carbonation test measurement of carbonation depth by phenolphthalein spray test at selected locations ( drilled powder sample or concrete core sample as per site condition ) on rcc members of the structures covered under the study to see the depth of carbonation as per bs en 14630:2006, bs en 13295:2004. cover depth is also measured at the same location to know the ration of carbonation depth. , core extraction testing extracting the concrete core samples following the coda provisions; and evaluating the properties ( fck value, grade of concrete ) in the laboratory from the core samples selected. is456:2000; is 516:1959, is 1199:2002; astm c-42, without encountering any steel reinforcement from the rcc members covered under the study at specified locations by site in-charge with portable power driven core cutting equipment. , resistivity resistivity meter test:- it is used in determination or estimation of the likelihood of corrosion due to poor quality of concrete, correlation to chloride permeability, determination of zonal requirements for cathodic protection systems, identification of areas within a structure most susceptible to chloride penetration as per bs en 12696:2000, rilem tc-154, aashto t277 rcp, aashto t259, astm c 1202 97 , half cell 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 in terms of probable risk of corrosion of steel bar as per astm c876 the rate shall include surface preparation, moistening concrete surface. , ph and chloride ph value ( to check alkanity of concrete ) as per relevant b.s. 5328, aci 201.2r-92 and aci-318-99, is 456:2000, bs 811. , report interpretation and recommendation preparing and submitting comprehensive report consisting of findings from visual inspection, test data, interpretation of results, conclusions and final recommendations along with sketch indicating the location of the test. recommendation part does not include the repair scheme / dpr or boq related to the project. evaluation and presentation on recommendations / suggestions for approval measures of unesco / icm / eag final submission. the hd quality site photographs and video shall be provided to employer in a good quality of cd / dvd / usb hard disk along with softcopy but any data generated from the patented software cant be edited so those files cant be provided in the editable format. , boq boq and conceptual scheme for rehabilitation / retro- fitting works ( feasible and economic options ) with rate analysis, material specification, execution drawing for strengthening of structure along with technical specifications and periodic inspection and maintenance. , material and labour laying well burnt old sizebricks, straight or curved on plan , laid flat with width equal to length of brick , laid dry over electric cable for protection all as specified. => limited