Johnson David Email & Phone Number

Mumbai, Mh, In

As Design Coordinator responsible for UG02- Associated in preparation of Priliminary and Detailed Designs of Bored Tunnel and NATM Tunnels, GIRS, Geotechnical design inputs for Secant pile design and Deep Excavation design & support for C&C Station, Building Damage Assessments Reports for Stations & Tunnels and reviewing design transmittals; internal coordination with team and Client and Client meetings.

Gurgaon, India

• Providing inputs for preparation of Geotechnical Factual Report & verifying the same prior to submission to GC.• Associated in preparation of Geological Interpretative Report of UG Stations, Bored Tunnel & NATM Tunnel Stretches.• Providing inputs for Deep Excavation & Support System (FEM)analysis, Instrumentation & Monitoring analysis, also in NATM Tunnel ,CP and Crossover Primary Support.• Providing additional recommendations at site for UG Station Slopes & Tunnel stability through FEM, Face Mapping data, Kinematic Analysis of Joints (Planar, Wedge, Topple failure) and through geological softwares like RS2,DIPS,Swedge & Unwedge.• Preparation of technical specification for geological and geotechnical investigation. • Preparation of Geological Profiles/Sections for UG Stations & Tunnels.• Assessment of Geological Strength Index, RMR through Bore Hole logs, reviewing Face Mapping of various slopes, Underground Tunnelling & Stations.• Providing geotech design input parameters through assessment of GSI values for designing Secant Pile foundation depths etc. • Reviewing Geo technical Instrumentation & Monitoring data (Inclinometer, MPBX, Building settlement Marker, Crack Meter, Tilt Meter, Bi-reflex Targets etc.), Critical building assessments, Vibration Monitoring for various Heritages & structures in route of Metro Project, Real Time Monitoring of Heritage/Sensitive Structures etc.• Coordinating with Contractor/Client, LDC & General Consultant for seeking approval for various designs after optimisations & fulfilment of their comments & requirements and again monitoring & reviewing site execution of the same designs & providing necessary inputs as when requires at site as a DDC representative at site.

New Delhi Area, India

• Geo technical Investigation, Planning, Collection of geological data, management and interpretation. • Analysis of pre and post Site investigation and providing Geotechnical Inputs to tunnel team, design & planning team.• Preparation of detailed geological profiles for complete tunnel track including details of soil or rock engineering properties, Geo technical instrumentation, ground settlement analysis & critical building assessments.• Regular inspection of tunnel face in TBM chamber and preparation of Geological Face Profiles and circulating to civil engineers.• Interpretation of rock or soil samples and geological face profiles to update the geological sections during mining. • Recommendation of additional geo technical investigation and supervision of core drilling work along tunnel track.• Execution of Ground improvement plans including grouting methods.• Planning & execution of Installation and monitoring of geotechnical instruments such as Inclinometers, MPBX, SPBX, Load Cell, Bi-reflex targets, Ground Settlement markers, Building Settlement Markers, Tilt meters, Crack meters etc.• Preparation of Method Statement for Geotechnical Instrumentation & Monitoring for Tunnel track of CC-27 project and got approved by General Consultant.• Preparation & analysis of Daily, Weekly and Monthly Instruments monitoring reports. • Daily analysis of TBM Parameters (thrust force, face pressure, torque, penetration rate etc.) in correlation with excavation volume, ground settlement and geological conditions to analyze TBM performance.

Gurgaon, India

• Geological & geo technical data collection, documentation & interpretation through geomapping of project area, bore hole logging, slope & wedge stability analysis, & drainage studies, identifying borrow & quarry areas and construction material survey & reserve estimation, with techno-economical analysis etc. • Associated in preparation of Pre feasibility Report, Detailed Project Report, maps on different scales, geological cross/longitudinal sections along & across different project components and Bedrock profile plot etc. for designing & optimization of Project Layout.• Geological & Geotechnical inputs & supporting measures suggested through RMR & Q values; and predicting tunnel conditions ahead of a tunnel face to minimize surprises during construction of underground excavations.• Business development technical representative• Experience of working as a team member/leader to coordinate members of different working groups, Government & Private Officials, National & International Consultants for smooth functioning & achieving organizational goals and objectives.

Arunachal Pradesh & Sikkim, India

• Geological & geo technical data collection, documentation & interpretation through survey & geomapping of project area, bore hole logging, slope & wedge stability analysis, & drainage studies, identifying borrow & quarry areas and construction material survey & reserve estimation, with techno-economical analysis etc. • Associated in preparation of Pre feasibility Report, Detailed Project Report, maps on different scales, geological cross/longitudinal sections along & across different project components and Bedrock profile plot etc. for designing & optimization of Project Layout.• Geological & Geotechnical inputs & supporting measures suggested through RMR & Q values; and predicting tunnel conditions ahead of a tunnel face to minimize surprises during construction of underground excavations.

Master Of Science, Applied Geology & Geotech, First, Cgpa- (8.15/10)

M.Sc Applied Geology & Geotech

Bachelor Of Science, Geology, First (73.75%)