Information of Shear values plays an important role the design of
sub-structures in determining bearing capacity of soils, design of
retaining walls, instability calculation earth slopes etc. Various Shear
Apparatus are available and Direct Shear Apparatus is one of them.
In Direct Shear test specimen contained in a box is subjected to a
constant normal load and increasing horizontal load is applied to the
upper section of the specimen. Shear force and load are directly
Direct Shear Apparatus (Manually) (SL-GT-050)
AS PER IS: 2720 (Part-VIII), ASTM D-3080
For determination of the direct shear strength of soils on specimen
size 60 mm x 60 mm x 25 mm.
Specification: The apparatus comprises of the following:
Loading Unit: Supplied with load yoke with direct and lever system
for applying load. Normal stress capacity 8kg/sq.cm. Load is applied
either directly of through a counter balanced detachable lever.
Provision is made for load to be applied either through a steel ball
recessed in the loading pad or direct through a boss on the pre
calibrated loading yoke. The loading unit is provided with V strips
and roller strips for frictionless movement of shear box housing.
Shear Box Assembly: Comprising Direct Shear box in two halves for a
square specimen size 60 x 60 x 25 mm one pair of plain gripper
plates, one pair or perforated gripper plates, one pair or porous
stones, one top loading pad. Shear box housing: Accommodates the
Direct Shear Box assembly. Complete with two ball roller strips.
Specimen Cutter: For cutting 60 x 60 x 25 mm specimen from larger
samples. Set of weights to give a normal stress of 3 kg/sq.cm.
through lever as follows:
To give kg/cm sq. Qty.
0.05 4 Nos.
0.5 3 Nos.
Complete set as above but without proving ring.
Nett weight 140Kg.
Essential Accessories: High sensitivity compression ring cap 200
kg one consolidation dial gauge 0.01 mm x 25 mm and one strain
dial gauge 0.01 mm x 25 mm and one strain dial gauge 0.01 mm x
Optional extras: Additional set of weights to give a normal stress of
5 kg/cm2 Soil Sampler for 60 mm x 60mm specimen and test from
pad of 50. Spares: Porous stone for 60 mm x 60 mm size sample
available in pairs.