STRUCTURAL SURVEY FOR VARIOUS MARINE ASSETS INFRASTRUCTURE FACILITY OF NAVAL DOCKYARD MUMBAI UNDER GE NW KUNJALI COLABA MUMBAI 3RD CALL

Amount

Carrying of Audio Visual Survey for the complete infrastructure facilities complete all as specified and directed by Engineer-in-Charge.

Inspecting locating and recording defects and distress in structures indicating spalling, hollows, rust stains, exposed reinforcements and presenting photographic evidences for the same. Verification of the conditions of the reinforcements prestressed tendon ends. Potential salt ingress, exposed condition of the reinforcements. Identification of potential areas for further assessment

Developing as built structural framing drawings based on available data, Visual inspection survey and reinforcement scanning and other components, studying exsisting drawings and preparing as built drawings complete all as specified and directed by Engineer-in-Charge.

Conducting various Invasive and non Invasive strength and durability studies for the structures complete all as specified and directed by Engineer-in-Charge.

Conducting Seismic Tomographic assessment along longitudinal and lateral sections.

Conducting P wave seismic tomographic sections of using array of source and receivers for assessment of the masonry structures indicating the areas of low velocities. Using Digital seismograoph and seismic sources.

Condcuting impact echo assessement of the concrete structures complete all as specified and directed by Engineer-in-Charge. The impact echo assessment shall be performed to assess the concrete thickness, voids and amplitude of the short waves. The tests shall be performed as per ASTM C 1383

Conducting endscopidic inspection on various structural components like prestressing tendons and other components of the structures.

Conducting USPV tests on the concrete strcutures complete all as specified and directed by Engineer-in-Charge. The ultrasonic pulse velocity test shall be performed on the structural components as per IS 516 Latest revisions in differet profile. Indicating the pattern of velocity and time.

Condcuting Chloride migration coefficient on the concrete samples collected and comment on the rate of the corrosion of concrete complete all as specified and directed by Engineer-in-Charge.

Conducting Resistivity survey of the concrete cover and comment on the value of the cover and risk of depasivation of the concrete complete all as specified and directed by Engineer-in-Charge.

Conducting Half cell potentiometer test on concrete elements complete all as specified and directed by Engineer-in-Charge.

Conducting Pull off resistance test of concrete resistance as per ASTM D 4541 for establishing correation to concrete compressive strenght complete all as specified and directed by Engineer-in-Charge.

Conducting concrete permeability tests as per ASTM C 1202 complete all as specified and directed by Engineer-in-Charge.

Assessing Carbonation Tests on concrete surface to assess loss of passivation of concrete cover on core as well as dust samples complete all as specified and directed by Engineer-in-Charge.

Extracting Concrete Core samples at required locations for assessment of compressive strength as per IS 516 updated versions complete all as specified and directed by Engineer-in-Charge.

Conducting Schimdt Rebound hardness tests on the concrete strcutures complete all as specified and directed by Engineer-in-Charge.

Conducting Reinforcement mapping of the structural components wherever required as per complete all as specified and directed by Engineer-in-Charge.

Conducting Chloride Diffusion Test/ Chloride Migration Profile as per ASTM C1556 & AASHTO- T259: 2022 inlcuding extraction of sample from structure complete all as specified and directed by Engineer-in-Charge.

Assessing Chloride profile of concrete at current state in terms of depth and concentration inlcuding extraction of sample. To be analysed for at least 6-8 cms of depth complete all as specified and directed by Engineer-in-Charge.

Preparation and submission of comprehensive investigation report indicating conclusive physical and geometric properties of complete different structures. This shall Including durability based assessments based on various all evaluations conducting durabiity analysis of the structures and utlising established softwares complete all as specified and directed by Engineer-in-Charge.

Conducting Structural Analysis of exsisting Jetty and wharf structures complete all as specified and directed by Engineer-in-Charge.

For exsisting loads imposed on to the strcuture for crane wheel loads and other anciliary structures.

For Anticipated additional imposed crane loads on to the strcuture complete all as specified and directed by Engineer-in-Charge.

Preparing interpretative and recommendatory reports based on the findings of the investigations and analysis of or the individual strcuture. Recommending method of repairs and quantity estimation for execution of the repair structures complete all as specified and directed by Engineer-in-Charge.

Shashank Mehendale & Associates