WBPWD / KCHD / EE-I / NIeQ_22 / 2019-2020 (2nd call)

Amount

RCC Mapping by GPR: Mapping of reinforcement in RCC members by using x-ray/magnetic based scanner at doubtful location in the grid size of 600x600 m; each picture shot and ploting of the details same on drawings measuring the cover depth and existing protecting layer of steel rebar, diameter of steel and number of rebar, Preparation of structural details of RCC sections spacing of bar up to 300mm-450 mm depth, Very high frequency Hz GPR.

Repairing Methodology and retrofitting scheme for structural serviceability and safety, periodic maintenance scheme, futuristic protection of structure. The recommendation for structural repair and rehabilitation to the structures shall have detailed technical specifications, materials to be used and design details, vulnerability indices and order of urgency to repair.

Crack Pattern Analysis: Crack depth and crack width will be measured by Ultrasonic Pulse Velocity system, mapping of crack pattern, classification of cracks and cause analysis of crack propagation as per ACI 318,201, IS 456.

Ultrasonic Pulse Velocity Test: for ascertaining the quality of concrete, soundness and density of concrete, uniformity of concrete in terms of density as per IS 13311 (Part-1)-1992, ASTM: C597-83, BS 6089:1981 and BS 1881: Part 203 and BS EN:13791.

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, BSEN:13791, also establishing correlation chart between rebound hammer and other confirmatory test for estimated in-situ strength of concrete if required.

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.

Structural Stability Analysis: To check the vulnerability analysis, structural deficiencies and structural stability analysis of overall structure, computer model of existing structure will be analysed as per present or required loading criteria. In the structural analysis of existing structure, we will use the results of NDT of the materials / available properties of existing materials.

Proof Checking of Report:- Proof checking of report / design details analyzed by existing consultant / clients and giving as third party expert comments on the submitted report by reputed institute equivalent to IIT or IIEST.

Bill of Quantity(BOQ) with detailed specification of materials, supporting rate analysis of unschedule items, details of measurement and complete cost analysis as per approved recommdation for strengthening of structure to make it suitable for serviceability, Execution methodology with complete execution drawings and sketches.

Chemiical analysis of concrete powder collected from the structure by drilling or collecting concrete core sample in the laboratory to know presence of chemically concrete deteriorating agents such (chloride, pH, Sulphate), degradation evaluation of concrete properties and its effect on reinforcement corrosion

Preparation of Structural Drawings with complete RCC details, section sizes and steel percentage by using profometer or GPR based scanner, it will give detailed cover depth and existing protecting layer of steel rebar, diameter of steel and number of steel bar

Structwel Designers & Consultants Pvt. Ltd.