supply of supply, installation, calibration and training of- direct shear apparatus (motorised) 12 speed, motorised, to be operated as per is: 2720 (part xiii)is: 11229 supplied complete with proving ring and 02n os. of dial gauge of 0.01 x 25mm. the unit should be provided with a turret type gear box to get 12 differe nt constant rates of strain i.e 1.25, 0.625, 0.25, 0.125, 0.05, 0.025, 0.01, 0.005, 0.002, 0.001, 0.0004, and 0 .0002 mm/min and arrangements to carry out residual shear strength
tests. suitable for operation with 220 v, 50 hz, single-phase supply. it comprises of:- 1. shear box assembly, 60 mm square, complete with a u-br acket, guide pins and spacing screws, made of brass. 2. gripper assembly consisting of two plain grid plate s, two perforated grid plates, one base plate and one loading pad, all made of brass. 3. two porous stones, each 6 mm thick, fitting the shear box. 4. shear box housing of brass, complete with two ball roller strips. 5 . loading unit with normal loading of 8 kg/cm2 on 60 mm square specimen. 6. specimen cutter for a speci men size of 60 mm x 60 mm x 25 mm. 7. set of weights to give a normal stress upto 3 kg/cm2 through lev er, comprising 4 of 0.05 kg/cm2, 1 of 0.1 kg/cm2, 1 of 0.2 kg/cm2, 3 of 0.5 kg/cm2 and 1 of 1 kg/cm2. 8. th e unit is provided with a turret type gear box to get 12 different constant rates of strain i.e 1.25, 0.625, 0.2 5, 0.125, 0.05, 0.025, 0.01, 0.005, 0.002, 0.001, 0.0004, and 0.0002 mm/min. and arrangements to carry o ut residual shear strength tests. 9. any other component or item. make- aimil/heico or similar better. the ra te also includes- a. supply and installation of the machine to geotechnical laboratory/construction, nf rail way, maligaon, guwahati, pin-781011. b. necessary fixing of footing, bolts, grooving, concreting, bolting & shifting of equipment to install and fix the apparatus inside geotechnical laboratory/con, nfr, maligaon, g uwahati. c. 1st year calibration of the equipment as per nabl standard. d. first hand training of nf railway official on use of the equipment as per latest relevant code of railway/is standard at maligaon, guwahati, p in-781011. e. supply of latest guidelines (rdso/iricen/is code etc.) related to the use of the equipment. [ warranty period: 12 months after the date of delivery ] ] - 1. supply, installation, calibration and training of- direct shear apparatus (motorised) 12 speed, motorised, to be operated etc. 2. supply, installation, calibration and training of laboratory vane shear apparatus (motorized) 3. supply, installation, calibration and training of- the unconfined compressive strength test apparatus
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