SELECTION AND ENGAGING COMPETENT AGENCY TO CARRYOUT THE REQUIRED STRUCTRAL TESTING AND STRUCTRAL RECOMMENDATION FOR THE UZ- LZ BUILDING AT SANTHINAGAR-RETRIFITTING IN LZ-UZ BUILDINGS Re tender

testing

OD281491/2025-2026:Conducting visual inspection of the entire exposed areas of the building, including the following activities: a) Recording all visible blemishes/defects, marking their locations on drawings and photographing the same. b) Identifying, measuring, and recording cracks wider than 0.2 mm using a crack width gauge, including measurement and documentation of crack length, direction, pattern, and location, and preparation of crack mapping. c) Preparation and submission of a detailed inspection report comprising observations, crack mapping drawings, photographic documentation, measurements, and recommendations, complete in all respects. The inspection report along with all supporting documents shall be submitted in both hard copy and soft copy formats, complete as directed by the Engineer-in-Charge.

OD282487/2025-2026:Conducting Rebound Hammer Test on reinforced concrete structural elements such as columns, beams, and slabs, in accordance with IS 516 (Part 5), to assess surface hardness and estimate in-situ compressive strength of concrete, including surface preparation, marking of test locations, taking required number of readings, recording and interpretation of results. The work shall also include preparation and submission of a detailed test report comprising test locations, tabulated rebound values, estimated compressive strength, photographs, observations, and conclusions. The complete test report along with all supporting documents shall be submitted in both hard copy and soft copy formats, complete as directed by the Engineer-in-Charge.

OD282534/2025-2026:Concrete Covermeter Survey (Rebar Detection Test) -Providing and carrying out Concrete Covermeter Survey on RCC structural elements such as columns, beams and slabs, using Profometer 5S or equivalent approved rebar detector, for detection and mapping of reinforcement bars, to determine concrete cover, spacing of rebars and approximate diameters of bars, in accordance with BS 1881: Part 204:1988, including: Surface preparation and calibration of equipment Detection and marking of reinforcement layout Measurement of concrete cover, bar spacing and approximate bar diameter Recording observations location-wise Covering a maximum area of 1.0 m² per test location All labour, tools, instruments, consumables and incidentals required Complete as directed by the Engineer-in-Charge.

OD282602/2025-2026:Providing and carrying out drilling of concrete cores from RCC structural elements such as columns, beams and slabs, at locations as approved by the Engineer-in-Charge, using diamond core drilling machine, and conducting laboratory testing to determine the in-situ compressive strength of concrete, including the following analyses: a) Visual inspection of extracted concrete cores for defects such as honeycombing, cracks and segregation b) Determination of density of concrete cores c) Compressive strength test on concrete cores in accordance with IS 516: Part 4 Including: Cutting, trimming and end preparation of cores Measurement of core dimensions and length-to-diameter ratio Correction of test results as per IS provisions Transportation of cores to approved laboratory Recording and interpretation of test results All labour, equipment, tools, consumables and incidentals Complete as directed by the Engineer-in-Charge

OD282605/2025-2026:Providing and carrying out Half-Cell Potential survey on RCC structural elements such as slabs, beams and columns, for assessing the probability of corrosion of embedded reinforcement, using Half-Cell (Cu / CuSO?) electrode, in accordance with ASTM C876, including: Preparation of concrete surface and electrical continuity checks Laying out grid pattern of 250 mm × 250 mm Measurement and mapping of half-cell potentials at grid points Covering a total area of 1.0 m × 1.0 m per test locationPlotting and interpretation of corrosion potential contours Recording readings location-wise All labour, instruments, electrodes, wiring, consumables and incidentals Complete as directed by the Engineer-in-Charge.

OD282611/2025-2026:Providing and carrying out extraction of concrete powder (dust) samples from RCC structural elements such as slabs, beams and columns, at locations approved by the Engineer-in-Charge, for durability / chemical analysis, as per BS 1881 part 124 including: Drilling and collection of concrete powder samples at three depth increments, namely: 0- 30 mm 30-60 mm 60- 90 mm Collection of samples using approved low-contamination drilling method Proper labeling, sealing and preservation of samples depth-wise Cleaning of drill holes after sampling All labour, tools, drilling equipment, consumables and incidentals Complete as directed by the Engineer-in-Charge.

OD283007/2025-2026:Chemical Analysis of Concrete Dust Sample (pH, Sulphate & Chloride) Providing and carrying out chemical analysis of concrete dust (powder) samples collected from RCC structural elements, to determine pH value, sulphate content and chloride content, in an approved / NABL-accredited laboratory, using standard test procedures and relevant IS / ASTM codes, including: Receipt, preparation and conditioning of concrete dust samples Determination of pH value of concrete Determination of sulphate content Determination of acid-soluble / water-soluble chloride content Recording and interpretation of test results with reference to codal limits All labour, chemicals, reagents, apparatus, testing charges and incidentals Complete as directed by the Engineer-in-Charge

OD282928/2025-2026:Providing and carrying out determination of in-situ depth of carbonation of concrete in RCC structural elements such as slabs, beams and columns, at locations approved by the Engineer-in-Charge, in accordance with BS EN 14630:2006, including: Exposure of fresh concrete surface by drilling / cutting / core extraction as required Application of approved phenolphthalein indicator solution Measurement of carbonation depth from concrete surface to colour change boundary Recording depth-wise readings location-wise Marking and photographic documentation of test locations All labour, tools, equipment, chemicals, consumables and incidentals Complete as directed by the Engineer-in-Charge

OD282934/2025-2026:Providing and carrying out exposure of existing RCC footings by manual excavation, at locations approved by the Engineer-in-Charge, for the purpose of visual inspection, sampling and testing, including: Careful manual excavation around footing to required depth and extent Exposing sides and bottom of footing without damaging concrete or reinforcement Cleaning of exposed surfaces for inspection Facilitating inspection, measurements, sampling and in-situ / laboratory testing as specified Temporary shoring / protection, dewatering if required Backfilling with excavated earth after completion of inspection and testing, watering and consolidation All labour, tools, tackles, leads and lifts, safety measures and incidentals Complete as directed by the Engineer-in-Charge

OD283016/2025-2026:Providing and carrying out mobilization and demobilization of manpower and testing equipment from an approved testing agency, including deployment of qualified engineers, technicians and supporting staff, for carrying out detailed concrete investigation works, including: Mobilization and demobilization of all required testing equipment, tools and instruments Technician and professional service charges Providing, erecting and dismantling of scaffolding wherever required for inspection and testing All associated labour charges, handling, transportation, loading and unloading Conducting site inspections and coordinating all approved visual, NDT and laboratory tests Including preparation and submission of a comprehensive factual Concrete Investigation Report, based on the results of visual inspection, non-destructive testing and laboratory analysis, comprising: Compilation, analysis and interpretation of all test results Identification of distressed / deficient structural members such as shear walls, columns, beams, slabs, footings, etc. Assessment of structural condition and durability aspects Recommendations for type of rectification / rehabilitation measures required for each identified structural member Inputs suitable for further tendering of rectification / rehabilitation works Including all documentation, drawings / sketches if required, photographs, professional inputs, printing and compilation charges. Complete as directed by the Engineer-in-Charge

OD283404/2025-2026:Repairs to plaster of thickness 20 mm to 50 mm in patches of area 2.5 sq. metre and under, including cutting the patch in proper shape, raking out joints, cleaning and preparing the surface, watering, and replastering the surface of walls complete, including disposal of rubbish/malba to the dumping ground within 50 metres lead, all lifts, complete as per directions of the Engineer-in-Charge. With cement mortar 1:4 (1 cement : 4 fine sand), cement of GP-2 grade

4.2.5:Providing and laying cement concrete in retaining walls, return walls, walls ( any thickness) including attached pilasters, columns, piers, abutments, pillars, posts, struts,buttresses, string or lacing courses, parapets, coping, bed blocks, anchor blocks, plain window sills, fillets, sunken floor, etc. up to floor five level, excluding the cost of centering, shuttering and finishing:1:3:6 (1 cement : 3 coarse sand (zone-III) derived from natural sources : 6 graded stone aggregate 20 mm nominal size derived from natural sources)

OD283048/2025-2026:Providing and carrying out disposal of rubbish, malba or similar unserviceable, dismantled or waste materials generated during testing / investigation works, by mechanical means, including loading at site, transportation beyond the initial lead of 50 metres for all leads, unloading and disposal at an approved municipal dumping ground or at any location as approved by the Engineer-in-Charge, including all lifts involved. The item also includes thorough cleaning of the area where testing / investigation works were carried out, complete removal of debris, making good the surroundings and leaving the site in a clean, safe and orderly condition. The rate shall include the cost of all labour, machinery, tools, fuel, handling charges and incidentals, complete in all respects, as directed by the Engineer-in-Charge

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