East Central Railway Tender

Mobilization and demobilization charges of drilling equipment and manpower (50% payment each after mobilization and re-mobilization) .(Schedule Read as Tunnel)

Drilling of Nx size bore holes (75 mm diameter) in all types of rock (weathered and fresh rock) and collection of rock core samples from boreholes at tunnel sites . (a)Upto 50m depth

Drilling of Nx size bore holes (75 mm diameter) in all types of rock (weathered and fresh rock) and collection of rock core samples from boreholes at tunnel sites . (b)Beyond 50m upto 100 m

Drilling of Nx size bore holes (75 mm diameter) in all types of rock (weathered and fresh rock) and collection of rock core samples from boreholes at tunnel sites . (c)Beyond 100 m 01

In situ permeability test in bore holes at tunnel sites.

Laboratory Tests . (a)"Rock samples (i) Density (ii) Specific gravity (iii) Water absorption (iv) Uniaxial compressive (v) RQD" 8 b 20.00 Each 01

Laboratory Tests . (b)Deformability of rock materials (yong's modulus, modulus of deformability, stress strain curve, failure energy) IS 9221, IS 9143 for Rock samples.

Laboratory Tests . (c)Petro graphic Description of Rock (grain size, mineral content, texture) for Rock Samples.

Laboratory Tests . (d)Tensile strength of rock materials (indirect tensile strength, "Brazilian test") IS-10082 for Rock Samples.

Erection of drilling equipment from one bore hole site to another bore hole site and construction of working platform for drilling machine including making of approaches.

"Preparation of initial and final design and drawing for 09 Nos. Tunnels and cut-cover ranging in length 60-1238m (Approx) including mofifying the design and drawings during construction phase which shall include the following but not limited to (a) Tunnel and its drainage & allied civil work. (b) Compatibility of Design for Railway Electrification in future. (c) Tunnel ventilation system. (d) Fire detection and suppression system for the tunnel. (e) Tunnel illumination (f) Communication 01 system for emergencies and maintenance. (g) Evacuation scheme in case of emergencies. (h) Surveillance system. (i) Envionmental Impact Assessment. (j) Methodology, Number of fronts, Adits. (k) Disposal of muck accrued from tunnel excavation. (L) List of equipments to be deployed by Tunneling contractor. (m) Ballastless track. (n) Compatibility for provision of Signalling and telecom arrangements. Note: 1. Initial design drawing of tunnels have been given by Railway to construction contractor to start the work. 2. The design of tunnels shall be governed by the provisions given in ""Terms of Reference"". 3. Payment for this item shall be made in stages based on deliverables as given in schedule of payments mentioned under terms of reference."

Tunnel Construction Engineer (NATM Local) 01

Head Geologist (Local) 01

Instrumention Engineer (Local) 01

3 D Monitoring Engineer/Surveyor 01

Site Assistant

Supply, installation as per approved drawing, calibration /setting, maintenance, taking reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. on the supports in tunnels as directed by Engineer- in-charge. Tape extensometer to measure the distance between two points, one tape length of 15 m 01 to be attached to the instrument, tape with holes of 3mm dia at 2 to 3 cm interval depending upon the constant tension device. Fixing hook of tape extensometer should be free to move, at leastcount 0.05 mm accuracy ±1 mm, case cushioned inside for keeping the instrument, the tape extensometer should be supplied with one extra tape of 15m length and a calibration frame, hook type studs shall be compatible to tape extensometer for steel rib deformation and for rock deformation to be fixed along with drilling grouting etc. complete (One instrument section consists of 6 pairs of studs or as directed by the Engineer-in-Charge).

Supply, installation as per approved drawing, calibration /setting, maintenance, taking reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. on the supports in tunnels and for seepage 01 measurements as directed by Engineer-in-charge.Seepage measurement system to measure the flow of water from the face of the tunnel by using triangular V-notch (Mechanical Type) with all fittings and accessories complete set range 20 ltr. per second, including the arrangements for drain etc. complete. (One No. per working Tunnel Portal). Note: Unit to be read as "Per working Tunnel Portal" in stead of "Each"

Supply, installation as per approved drawing, calibration /setting, maintenance, taking reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for 01 measuring the deformations, loads, pressures, etc. on the supports in tunnels as directed by Engineer- in-charge. Strain Gauge to measure strain in shotcrete, active Gauge Length 166 mm, overall dia 19mm, Range +/-1500 Sensitivity 1 (10 Nos. at each instrumented section, one section at every 200m interval or as per direction of Engineer-in-Charge, to monitor strain in concrete/shotcrete).

Supply, installation as per approved drawing, calibration /setting, maintenance, taking 01 reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. on the supports in tunnels as directed by Engineer- in-charge. Supply, testing, Calibration, maintenance of set of readout units compatible to proposed sensor as per specifications and as directed by Engineer-in-charge and as per approved method.

Supply, installation as per approved drawing, calibration /setting, maintenance, taking reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. on the supports in tunnels as directed by engineer- 01 in-charge. Optical targets (Bi-Reflex) in the tunnel roof and at wall at selected points along the tunnel wall to monitor vertical and longitudinal (in tunnel direction) deformation components (5 Nos. at each section, one such at every 25m interval) or as per instruction of Engineer in charge. Optical target shall be supplied complete with adapter (breaking point and 12mm X 170mm convergence bolt with 3/8" pipe thread, Fe550, Galvanised, Protective cap).

Supply, installation as per approved drawing, calibration /setting, maintenance, taking 01 reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. on the supports in tunnels as directed by Engineer- in-charge. Switch Box for connecting the instruments inside the tunnel, min 10Nos sensors with certain Core(x) cable of certain cable dia(yz)

Supply, installation as per approved drawing, calibration /setting, maintenance, taking 01 reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. on the supports in tunnels and for seepage measurements as directed by Engineer-in-charge. Cable for connecting the instruments with the switch box at safer location. 6Core/4Core.

Supply as per approved drawing, calibration / setting, maintenance, taking reading at regular intervals, etc., of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressure, etc., on the supports in tunnels as direcyed by engineer-in charge. Supply of inclinometer (EAN- 26M inclinometer system or equivalent) at the specified locations as per drawings or as directed by Engineer-in charge. The rate shall include all accessories required for installation including cables and civil works, as per specifications and as per approved method statement. Specification/wheel base: 500 mm Ranging: +/- 30 degree vertical Resolution: 0.02 mm per 500 mm Repeatability +/- 0.01% FS.

Supply, installation as per approved drawing, calibration /setting , maintenance, taking reading at regular intervals, etc., of the following instruments form the OEM/approved suppliers for 01 measuring the deformations, loads, pressure etc., on the supports in tunnels as directed by Engineer- in charge. Fixing of casing and fittings for inclinometer as per the drawing or as directed by Engineer- in charge. The rate shall include per RM price including all accessories, fixtures, tools etc., as per the specification and approved method statement, Civil works include Drilling through concrete, shotcrete, rock and soil, installation, fixing and grouting for installation in the scope of civil contractor.

Supply, installation as per approved drawing, calibration /setting, maintenance, taking reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. On the supports in tunnels as directed by Engineer-in-charge.Shotcrete/concrete stress cell NATM style Vibrating wire stress cell to measure radial and tangantial stresses in shotcrete or concrete, Capacity of stress cell tangential 200Kg/sq.cm and radial 50Kg/sq.cm. Accuracy+/-0.5%. Each stress cell shuld be marked with capacity,serial no. etc 01 along with syfficient Teflon PVC or similar cable sheilded, intergral with stress cell for taking observation using the proper read out. Connector/switch/junction box to be attached to the cable of stress cell for connecting to readout. The readout should be compatible to vibrating wire stress cell, rechargeable battery Radial & operated. LCD dispaly, stress cell should be calibrated with readout, Tangential connector to connect the stress cell, perfectly sealed to make it dust and moisture proof including battery charge and one extra recharable battery. (6Nos at each instrumented section; 3 for Radial and & 3 for Tangential; spacing at 200mtr c/c or as per direction of Engineer-in-charge to measure stress in the concrete or shotcrete lining.)

Supply, installation as per approved drawing, calibration maintenance, taking reading 01 at regular intervals,etc. of the following instruments from the OEM/approved, suppliers for measuring the vibration as directed by Engineer-incharge. Vibration monitors in existing structure/ exposed rock towards proposed tunnel closest to the section undergoing blasting in proposed tunnel.

Supply, installation as per approved drawing, calibration /setting, maintenance, taking reading at regular intervals, etc. of the following instruments from the OEM/approved suppliers for measuring the deformations, loads, pressures, etc. On the supports in tunnels and for seepage 01 measurements as directed by Engineer-in-charge.Vibrating wire Type rock bolt load cell of Capacity 25 Tonn, bolt load cell opertaing temperature (-)10 to (+) 55 degree centigrade,built in temperature device device range(-) 45 to (+) 100 degree centigrade, signal cable,4 core sheilded teflon/pvc or similar cable with pvc jacket waterproof, stainless steel material and with lightenning protection device . 5 nos. at each instrumented section, one section at every 200 meter interval or as per direction of Engineer incharge, to monitor the Load coming on load cell.

Transportation of survey team, installation and monitoring & maintenance instrumentation team along with the equipment(s) at site during the contract period .