CONSULTANCY SERVICES FOR PROVISION OF STRUCTURE ANALYSIS OF CIVILIAN NGO HOSTEL P-37 IN DRDO RESIDENTIAL COMPLEX AT SANCHAR VIHAR DEAL DEHRADUN

VISUAL SURVEY

Visual inspection for surface damages, damage classification. The visual inspection shall largely cover area of high distress, corrasion, moisture, leakage, abnormal variations in structure, algae and fungus growth, efforescence, etc. Visual inspection would be documented in the form of worksheets, photographic records, and distress over drawings.

For determining the estimated compressive strenth of concrete and uniformity of concrete in terms of surface hardness as per IS 13311 (Part-2)-1992, ASTM C805-02, 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 wil be generated on the basis of empirical formula (obtained from the calibration chart) but those results will have 25% variation as per IS 516 Part-5/Section-4

For ascertaining the quality of concrete, unifromity of concrete in terms of soundness and density of concrete as per IS 13311 (Part-I)-1992, ASTM : C597-83, BS 6089 : 1981 and BS 1881 : Part 203 and BS EN : 13791 : also establishing correclation chart between USPV and other confirmatory test for having estimated in sity strength of concrete if required

Extracting the concrete core samples fololowing the codal provisions; and evaluating the properties (fck value, grade of concrete) in the laboratory from the core samples selected. IS 456:2000, IS 516:1959, IS 1199:2002; ASTM C-42, without encountering any steel reinforcement from the RCC members covered under the study