Code: CEST307

Specifications: Same as above but fitted with a turret box to give 30 rates of strain for 6.0mm/min. to 48mm/min.

Code: CEST310

Specifications: This is a portable load frame which can easily be kept on Laboratory bench. Thus it is very convenient to the user to conduct tests. A motorized screw jack is fixed at the base to which are fixed two vertical pillars which can be easily dismantled. A circular platen of 150mm dia. fixed to the lead screw loading and unloading is effected by upward/downward movement of the lead screw using a forward/reverse switch. The cross head is adjustable at any desired height and carries and adaptor of Proving Ring. An adjustable dial gauge bracket is provided on one of the pillars. The rate of strain is constant 1.25mm/min. Operate on 230Volts A.C.

Code: CEST313

This is for trimming triaxial and unconfined test specimen of different diameters.

Specification: It consists of a base with a knife support. The platform supporting the specimen ring rotates at a slow speed of approx. 25 rpm by a fractional H.P. motor with reduction gear housed in a cabinet. The hardened steel trimming knife mounted on a support, can be adjusted horizontally as well as vertically to permit trimming of the specimen to the exact size of the ring. A guide supplied prevents over cutting. Complete with 38mm, 50mm, 75mm and 100mm dia. specimen rings.

Code: CEST316

This instrument is used for preparing soil samples for various tests like Triaxial Test. Unconfined Compression Test etc.

Soil lathe consist of a cabinet enclosing motor and gear system which rotates a disk at 24rpm. This disc adopts gripper plate of various sizes. An up right has an adjustable holder and takes upper gripper plates of different diameters. Arrangement is provided to control height and depth of cutting tool through a lead screw which has speeds 0.8 mm/min. and 1.6 m/minn. Supplied complete with gripper plate pairs for 38mm, 50mm, 75mm and 100mm dia. specimen. Suitable for 230 volts A.C.

Code: CEST319

In a traixial test it pore pressure is not required to be measured the testes can be completed in short times. However where pore pressure measurements are required, the duration of the triaxial test is moe as much as 96 hours. In certain cases it may be necessary to keep the cell pressure/constant for aperiod of several weeks. Constant pressure systems are used to apply the lateral pressure in a triaxial test chamber and automatically maintain this pressure constant at the valve set, over as long as period of time as desired. A control panel is supplied with each unit (suitable for wall mounting). On this panel are fixeda pressure pump and a screw controlled piston, a pressure gauge, a winding mechanism, a small water reservoir and the valves necessary 2 for filling, de-airing and applying the required pressure.

The pressure gauge supplied is marked in kg/cm . The pressure ranges given are applicable where an unobstructed wall height of 4.5 meter is avaiLable. For 2 every 30cm reduction in height, the pressure output of the unit reduces by approximately 0.55kg/cm for each pair of pots.

Code: CEST322

This can be supplied at extra cost for mounting any of the above units wherever will mounting is not practicable. Equipments supplied with each of the unit is as per table.:

Code: CEST325

Twin Burette, 50ml capacity graduated in 0.2ml. divisions. The unit consists of two graduated burettes of 50ml. x 0.2ml. capacity enclosed tin two Perspex tubes sealed by two end caps. The manifold with valves enable the flow of fluid in the burettes to be reversed when the paraffin interfaces reach their limits in the burettes, the maximum capacity of measurement being only limited by the capacity of the mercury pots. The two burettes, enable the reduction in error in meniscus reading due to reversal of flow, the average of the two burettes being always taken as the volume change reading.

Code: CEST328

Designed to find out specific gravities of Semi Liquids like mud and other liquids having densities in the range 0.8 to 25. It has a Stainless Steel bam calibrated specific gravities from 0.8 to 2.5. A stainless steel cup with lid and overflow vent is fitted on one side of the beam. A counter weight with cursor slides over the graduated scale. The beam has a knife edge at centre which rests in fulcrum fitted in the stand. Leveling screws and spirit level are fitted dot the stand.

Code: CEST331

It is designed for application of cell pressure upto 10kg/cm on a triaxial specimen in the triaxial cell This unit is mostly used in routine tests whichlast for about 10 to 15 minutes wherein the variations of cell pressure can be tolerated.

Specifications: The apparatus consists of a pressure chamber which has as flanged top cap fitted with a 2 10kg/cm .Pressure gauge and a Schrader valve for pumping in air. Water inlet and drain cock are fitted to the 2 chamber. The foot pump supplied easily develops a pressure of 10kg/cm .Complete with connecting pressure hose.

Code: CEST334

Same as above but suitable to develop pressure upto 20kg/cm . Fitted with suitable pressure gauge.

Code: CEST337

For determining the supporting strength of soil aggregate mixtures which pass the 2mm and do not contain more than 10% sand size material. The results obtained by this AASHO and CBR Test. The salient features of this apparatus are:- i) The mould used in this test are very smallhence very smaller samples are required which is a great advantage when a large number or tests have to be carried out with a limited quantity of soil avaiLable. Also when large quantities of soil are avaiLable, fresh samples can be used for each test. ii) Time required this test is very much less than C.B.R. test and thus more number of tests can be carried out.

Specifications: Load frame, mechanical, hand operated, capacity 5000kg. Cylinder Mould, brass, internal diameter 50mm x 125mm high approx. Cylinder Mould, steel internal diameter 50mm x 125 mm high approx. Detachable collar approx. 50 mm in height. Base, cylinder, diameter 50mm x 75mm high. Temporary support (Split collars held on a pair of tongs) to hold the mould on the bottom of the base. Frame of two steel rods, a base and a cross member haing a semi-circular notch which guides the hammer during compaction. It has a level for forcing the mould to the bottom of the baseafter molding. Hammer, 2.6kg. with a 310mm drop. Hammer, 4.89kg with 310mm drop. Penetration rod 16mm diameter with arrangement for mountingdial gauge. Guiding device which fits over the mould during testing and maintains the penetration rod in a vertical position. Soaking frame with perforated base and dial gauge holder. Annular weight, 550gms. With perforated base and spacer. Ejecting plunger. Proving ring, high sensitivity, capacity 1000kg. with calibration chart and carrying case. Dial gauge graduated 0.0002mm., range 5mm.

Code: CEST340

Specifications: Same as above but supplied with a bench mounting load frame motorized to give a constant strain rate of 1.25mm per minute.

Code: CEST343

The C.B.R. Method is used for finding the relative bearing ratio and expansion characteristics of soil of base, sub-base and sub-grade for thedesign of roads, pavements and runways.

Test can be made on all types of soils including sand, gravel, crushed stone etc. (Passing through 20mm IS sieve) C.B.R. test is usedextensively for selection of materials and control of sub-grades. The procedure of test is very simple. A 50mm dia. penetration piston is forced in the test soilandloads required for the penetration to penetrate different depths are recorded by means of a proving ring fixed to the penetration piston assembly and a dial gauge. Both Laboratory C.B.R and field C.B.R apparatus are avaiLable.

Code: CEST346

Sizes avaiLable are:

Lid and reviver brass for 20cm of 8'' dia. sieves-300mm dia. and 450mmdia. G.I Frame sieves are avaiLable in the following sizes (in mm)

G.I. Frames Sieves 300mm Dia - Model: ASI-911
G.I. Frames Sieves 450mm Dia - Model: ASI-912
Size AvaiLable: 125, 106, 100, 90, 80, 75, 63, 53, 50, 45, 40, 37.5, 31.5, 26.5, 25, 22.4, 20, 19, 16, 13.2, 12.5, 11.2, 10, 9.5, 8, 6.7, 6.3, 5.6 and 4.75mm.
Lid and receiver, G.I for 300mm or 450mm dia. sieves

Code: CEST349

This device can be used for ores, refractory materials, minerals, aggregates, pigments, powdered coal, soap, cement, roofing materials, plastic molding powders and metal powders, in short wherever sieving is applied. In a soil Laboratory this instrument has its own importance as it saves a considerable amount of time and Labor, besides giving perfect sieving. Sieve Shakers are either Electrically operated or Hand operated.

Code: CEST352

Similar to Wet Sieve Shaker but with a provision for mounting four sets of sieves at a time.

Code: CEST355

As Per IS: 1888-1962

This is for estimating the bearing capacity of shallow foundations in situ and for the design of flexible pavement. In the test procedure a steel plate is subjected to gradually increasing load and settlements of the plates recorded. Maximum bearing capacity is noted as that load at which the plate starts sinking rapidly.

Specifications: The basic outfit consists of : 50 tone Hydraulic jack with separate pumping unit fixed to a 0- 500KN x 0.5KN. Pressure gauge and flexible metal piper 5 mtr long- 1No. Special ball and socket arrangement between the jack and the bearing plate-1No. Extension rod 12mm. dia. x 25cm. long for taking dial gauge readings-16 Nos. Magnetic base with female thread on top for holding extension rod-4Nos. Top end plate, 50mm, dia. with male thread for fitting onto the extension rods and positioning the dial gauge plinger-4Nos. Column 15cm. dia. x 25cm long with flanges complete with four bolts and nuts- 2Nos. Column 15cm. dia. x 50cm long with flanges complete with four bolts and nuts- 1Nos. Bridge support of welded steel angel construction, 5mtr. Span and stands approximately 30cm, high, fitted with two quick release clamps a for positioning and holding the dail bracket-2Nos. Plane M.S. Plate 60cms x 60cms. Square x 25mm thick plane M.S. Plate 45cmx square x 25mm thick plane M.S. Plate 30cms x 30cmx square x 25mm thick Dial Gauge 0.01mm x 25mm- 4Nos.

Accessories: Plane M.S. Plate 75cm x 25mm thick plane M.S. Plate 50cmx 25mm thick Grooved M.S Plate 60cms x 60cms x 25mm thick grooved M.S. Plate 45cms x 45cms x 25 mm thick Grooved M.S. Plate 30cms x30cms x 25mm thick Grooved M.S. Plate 75CMS x 75cms x 25mm thick Note: 1) When plates of size more than 30cm.sq are used in order to prevent deflections of the edge, a series of smaller plates are advised to be placed concentrically on the bottom plate. 2) Flexible rubber pipe 1mtr. Length can be supplied for the hydraulic jack in place of metal pipe at extra cost. For site testing load trusses to meet the reaction of loading are avaiLable in different capacities as under.

Code: CEST358

Specifications: The Truss is of welded 1-girder construction in two halves which can be bolted together when required. The lower chord, the cross-pieces for holding the truss down and the vertical thrust members are all of welded box type construction with two channels enclosing and welded to an I-girder.

The anchorages are of a design tried out and perfected at CBRI, Roorkee. They consist of semi cylindrical pieces each held down by 3feeet long steel spikes driven in through holes drilled in the semi cylinder. The spikes enter the ground at about 60 degree to the horizontal, four from each side spaced along the length of the encourage The cross-pieces are moored to the anchorages by channel straps and bolts. Eight such anchorages are supplied with the 20tonne truss. Guy wires with turn-buckless are supplied to keep the truss erect.

Code: CEST361

Similar to above but twelve anchorages and spikes instead of eight.

Code: CEST364

Similar to above but sixteen anchorages and spikes instead of eight.

Code: CEST367

As Per IS: 4968- (Part-III)

The driver is by means of a rack and pinion ad is driven manually through a gearing arrangement. The gear box rack and pinion are fixed on two upright pillars and the movement of the rack is guided by a bracket and two pillars. The loading is done hydraulically. Two pressure gauges 15cm dia. one of low capacity 0-60kg/sq.cm.in 0.5kg/cm.sq. divisions and other 0-160kg/cm.sq are provided to indicate the penetration resistance. Isolation valve is provided to automatically isolate the lower range gauge when it reaches the maximum capacity. The valve can be adjusted and locked at desired values between 20 to 60kg/cm. sq. Provision is made to anchor the unit at site and there is provision for lateral shifting so that subsequent test could be performed without having to shift the entire anchorage system.

The Standard Outfit is as Under

• Penetration cone, steel 60 angel 10sq.cm.base area with friction jacket one. Mantle tube, non-uniform 36mm OD at the two ends and reduced dia. in between with sounding rod, working length 1m ..... Fifteen.
• Load measuring head with automatic cut-off valve and oil can one set.
• Pressure Gauge 0-160 kg/cm.sq ..... one
• Pressure Gauge 0-160 kg/cm.sq ..... one
• Auger with bolt ..... Four
• Auger driving handle ..... Four
• T-rod ..... One
• Spanner ..... One

Note: Uniform diameter mantle tubes can be ordered at extra cost. Optional Extras: Mantle tube 36mm uniform O.D. with sounding rod, working length 1mtr.

Spares & Accessories: Steel cone, 60 degree, 10sq.cm. base area. Mantle tube 36mm uniform O,D working length 1 meter with sounding rod. Mantle tube 36mmO.D at the ends and reduced dia. in between with sounding rod. Working length 1 meter. Pressure gauge 6 inch dia. 0-10kg/cm.sq. in 0.1 kg/cm.sq. divisions. Sampler to go with the above equipment. Friction jacket for Friction Ratio.

Code: CEST370

Soft and sensitive soils whose shear strength is less than 15KN/m , the results are dependent on operator's skill. Even pushing the sample tubes in soil may cause some disturbance. Experience shows that carefully controlled compression tests results can be related to figures obtained by pushing a small vane in the soil and rotating it at a controlled rate and measuring the force, required for maximum resistance. Vane Shear Test can be conducted in a Laboratory or in the field.