Direct Shear Test Calculations in Excel

By Bio_Madelyn27 13 May, 2022 Post a Comment

The direct shear test is simple. 3 Assembly Drawing of Direct Shear Box For normally consolidated samples of the order of 5-8 of the applied load has been transferred into side shear in the upper half of the box so lifting the box momentarily reverses the side shear and causes a small amount of sample disturbance thus causing a small.

Direct Shear Data Processing Youtube

Sample properties are automatically calculated.

. Plot all three normal stress. Specimen Height H H - havg in 4. Where c apparent cohesion of soil in terms of effective stresses σfeffective normal stress on failure plane.

Set the vertical load or pressure to a predetermined value and then close the bleeder valve and apply the load to the soil specimen by raising the toggle switch. Shear strength is defined as the maximum resistance that a material can withstand when subjected to shearing. Direct shear test calculations.

DIRECT SHEAR TEST 1. Calculate the shear stress on the sample. For conducting drained tests on cohesionless soils it is identically situated.

Size of Sample 6x6x2 S 30. Random generation of direct shear tests based on user-defined criteria SO-Shear download link provides demo version of the software. The method is.

Test data can be edited using either graphs or tables. C1-c2min is found for all 1800 points and assign c1-c2min c. Since the thickness of the sample is small quick drainage and hence rapid dissipation of pore pressure is possible.

Direct Shear Test on Sand Void Ratio Calculation Description of Soil. Direct Shear Test on Sand. The related Excel worksheet was created and the optimum results of the objective function were obtained by setting the Solver parameters dialog box accurately.

Up to 24 cash back Carefully transfer the sample into shear box. The mathematics model of nonlinear programming was established to evaluate shear strength parameters of soil from the results of direct shear test and triaxial shear test. Advantage of direst shear test-.

Objective For any soil Cohesion C and Angle of Internal Friction Ø are two important engineering properties which indicate the shear strength of soil. Specimen Length L in 2. Generally the Direct Shear Test is considered one of the most.

DESIGN CALCULATION FOR BASE PLATE. Direct Shear Test on Salt Range Sample. Plot shear stress τ vs.

τf c σftan ø. Area of Sample Ao 23226 mm2. Horizontal shear strain εh and sample volume change εv due to vertical settlement vs εh for each sample tested by your group.

2 Measure the diameter and height of the shear box. Excel Sheets Home. Specimen Width B in 3.

DATA CALCULATION SHEET FOR DIRECT SHEAR TEST. The conclusion is that the symmetrical direct shear test is an effective method for the measurement of the plane strain and direct shear angles of. Calculate the volume of the container.

Volume of Shear Box in3 5. The conclusion is that the symmetrical direct shear test is an effective method for the measurement of the plane strain and direct shear angles of friction for sand and the angle of dilation at the density and stress level tested. Then place a porous stone and a filter paper in the shear box.

Excel calculation of shear strength parameters for granular soil by direct shear test. Direct shear test is useful when cohesionless soil are to be tested. The result is obtained as per IS code.

At failure c is equal for both circles. The Direct Shear Test is an experimental procedure conducted in geotechnical engineering practice and research that aims to determine the shear strength of soil materials. Vertical Load 18 lb 15 ounce 8427 N Normal Vertical Stress sn 363 Kpa.

The mathematics model of nonlinear programming was established to evaluate shear strength parameters of soil from the results of direct shear test and triaxial shear test. The related Excel. Compute 15 of the diameter in millimeters.

In case of cohesive soil drainage time will be more and there is no control over drainage as in case of triaxial test hence it is suitable for sandy soils. Assume that the area of the sample did not change during the test and use the original area for all calculations. Total Volume of Shear Box in3 7.

Direct Shear Test on Salt Range Sample Size of Sample 6x6x2 S 30 Area of Sample Ao 23226 mm2 Vertical Load 18 lb 15 ounce 8427 N Normal Vertical Stress n 363 Kpa She ar Stre ngth KPa Deflection Load Dial A Shear Dial Gage Gage Deflection Load Reading Reading Ao 1- Strenght Deflection Vs Shear Strength mm N mm2 Kpa 6 0 0 0 0 23226 0 20 18 02. Start the motor at the selected speed so that the rate of shearing is at a selected constant rate and take the horizontal displacement gauge vertical displacement gage and shear load gage. Volume of Ribs making the grooves in3 6.

Design for Anchor Bolts in Moment. Area correction can be applied. Observations and Calculations for Direct Shear Test Calculations are to be done using the observations taken from the test as follows.

Excel Spreadsheets Engineering. 3 Carefully assemble the shear box and place it in the direct shear device. These two parameters are required for design of slopes calculation bearing capacity of any strata calculation of consolidation parameters and in many other analyses.

Place a filter paper a. Normal stress 05 kgcm2 Size of the sample 60 mm x 60 mm x 25 mm Least count of dial gauge Horizontal _____ Area of the sample Cross Sectional 36 sqcm Least count of dial gauge Vertical _____ Volume of the sample 90 cm3 Proving Ring No. For two different mohr circle let us take 2 different input parameters and thereby we have the coordinates of 1800 points on the circle for the 2 circles.

Various data input options. Check the inner dimension of the soil container. A two piece square shear box is one type of soil container used.

4 Place the sand into the shear box and level off the top. The apparatus is relatively cheap. October 4 2021 Civil Books Platform.

A proving ring is used to indicate the shear load taken by the soil initiated in the shearing plane. The soil specimen was taken as per IS 2720 Part 1-1983. Size of the box Area of the box Thickness of specimen Mass of specimen Volume of specimen Bulk Density of soil Dry density of soil Void ratio Mass of box base plate porous stone grid plate.

Uf pore water pressure on failure plane. Put the parts of the soil container together. ø angle of shearing resistance of soil in terms of effective stresses σf σf- uf.

Like Share and subscribe to our channel.

Excel Calculation Of Shear Strength Parameters For Granular Soil By Direct Shear Test Youtube