(b) A plate load test was carried out on a ground having a uniform sand stratum up to sufficient depth. The size of the plate was 40 cm x 40 cm Load (kN) 5 10 20 28 38 50 56 Settlement 0.8 1.3 2.25 3.6 6 8.25 11.5 (mm) Plot the load settlement curve. Also determine the bearing capacity and load that can be taken by a column footing of size 2m x 2m in this soil for an allowable settlement of 25 mm

(b) A plate load test was carried out on a ground having a uniform sand stratum up to sufficient depth. The size of the plate was 40 cm x 40 cm Load (kN) 5 10 20 28 38 50 56 Settlement 0.8 1.3 2.25 3.6 6 8.25 11.5 (mm) Plot the load settlement curve. Also determine the bearing capacity and load that can be taken by a column footing of size 2m x 2m in this soil for an allowable settlement of 25 mm

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

Q1/ The results of a load test carried out on a plate of size 30 cm x 30 cm are given in Table below. The load test was carried out at a depth of 2.5 m, below ground surface. The soil profile is fairly homogeneous sand at the site. From the test results: a. determine the settlement of an actual foundation of size 2.5 m x 2.5 m carrying a total load of 155 ton and located at a depth of 2.5 m below the ground surface. b. What is the bearing capacity of foundation if the settlement of plate 12.6 mm. Load intensity 0.496 0.992 1.488 1.984 2.48 2.976 3.472 3.968 4.464 496 kg/em Settlement, 0.5 1.0 1.8 2.75 4.4 5.4 9.8 12.5 17.0 28.7 mm
A strap footing consists of two footings connected by strap beam. Allowable soil pressure is 450 kPa. Footing thickness is 600mm and the bottom of the footing is 1.5m below the ground. Assume soil weight to be 19 Kn/m3 and concrete weight to be 24 Kn/m³. Use f'c = 20.7 Mpa and fy = 414 Mpa. Use 1.2DL + 1.6LL. gog = galow - footing weight – soil weight. DL = 275 kN LL = 400 kN DL = 600 kN LL = 500 kN 4.8 m 400 x 400 column 400 x 400 column 1.2 m 1.2 m a) Calculate the footing dimensions. (Size is in multiples of 100 mm) b) Draw the Shear and Moment Diagram on the Longitudinal Direction. Show the maximum shear and moment.
QUESTION 2 A rectangular footing 1000 x 2000 mm shown below is subjected to a vertical point load of 600 kN acting at eccentricities ex = 200 mm and eyy = 100 mm, as show on the Figure below. Calculate the stresses at the corners A and D, and sketch the stress distribution along the face A-D. е 200 mm Vertical force = 600 kN B eyy =100 mm 1 m D. 2m Rectangular footing - Plane
Please round to the nearest One (i.e., 1). No Comma! The results of a plate-load test in a clay soil are shown below. The size of the plate is 0.41m x 0.41m. If a square column foundation (3m x 3m) that should carry a load of 2700KN, what is the estimated settlement of the foundation? Load/unit area Settlement (KN/m²) Load/unit area (kN/m?) (mm) 200 600 800 400 200 300 6. 10 400 13 500 20 20 600 29 30 40 50 60 70 Answer = mm Next page page MacBook Air トII F1 F2 F3 F4 F5 F6 FB F9 @ #3 2$ & 2 3 4 7 8 W R Y U S D F G K Settlement (mm)
Q#4: Plate load test performed on a uniform deposit of sand and the following observations were recorded. The size of the plate was 45cm x 45cm. Plot the Pressure-Settlement Curve and determine the safe load on a footing 2m x 2m if the settlement is not to exceed 40mm. Pressure (kPa) 2 4 8 12 16 24 Settlement (mm) 3 6 20 40 60 100 Note: Write the proper answer in word format Subject: Geotechnical Design
The following results were obtained from CU tests on a clay soil that is the foundation material for an embankment. 03 (kPa) 300 400 600 0₁-03 (kPa) 331 420 487 Au (kPa) 111 160 322 (a) Determine the total and effective principal stresses for all three tests (You may summarize them in a table). (b) Recommend the shear strength parameters to be used for short-term and long-term analyses. The maximum confining pressure (cell pressure) at the depth of interest is 300 kPa. (Note: the clay is a normally consolidated one).
The following data as shown in the table was obtained from a plate load test carried out on a 600 mm square test plate at a depth of 3 m below the ground surface on a sandy soil. Water table is located at a large depth. What is the settlement of foundation of size 3.0 m x 3.0 m carrying a load of 150 t and placed at 3 m depth? [Round off to two decimal places]. Load intensity (t/m²) 5 10 15 20 25 30 35 40 Settlement of plate (mm) 2|4 7.5 11 16.3 23.5 35 46
11. Suppose the soil beneath the footing is now a sand with average SPT N60 of 28 (see below). Predict the footing settlement (in inches) using Meyerhof's formulas. 2 ft 18 ft 6 ft P = 72 kips Sand, y = 118 pcf Sand N60 = 28 Gravel
Figure (a) shows the cross section of square footing of 3 m x 3 m. The soil properties are shown in the figure. i) ii) Determine the load Q that the footing can carry. Use the factor of safety (FOS) of 2.5. During rainy season, groundwater level increased to the soil surface. Based on this condition, calculate the new FOS and justify whether the existing footing is able to carry the same amount of load as calculated in (a) Not drawn to scale 1.6 m 0.4 m Water level 3m Q Soil properties Yd=18.3K³ Ysat = 21 kN/m³ = 30°
Please round to the nearest One (i.e., 1). No Comma! The results of a plate-load test in a clay soil are shown below. The size of the plate is 0.58m x 0.58m. If a square column foundation (3m x 3m) that should carry a load of 3600KN, what is the estimated settlement of the foundation? Load/unit area Settlement (KN/m²) Load/unit area (kN/m³) (mm) 200 400 600 800 200 6. 300 400 13 10 500 20 20 600 29 30 40 50 60 70 Answer = mm Settlement (mm)
A structural engineer finished a design of a library. They determine that each column will carry 1000 lbs. the soil beneath the footing has the properties: gamma= 130 pcf, c= 75psf, phi= 40 degrees. The groundwater table is of great depth so it’s no concern. Sketch figures. What is the minimum size of the footing for a factor of safety of 3? Case 1: assume square footing Case 2: assume round footing
2. A 2m X 2m footing carrying 1400KN load is constructed in a site with 2.5m thick clay layer under a 2.5m thick sand layer. If the footing and the ground water table are located at 1.5m below the surface, calculate the consolidation settlement of the footing. You may assume the following soil properties: for sand sat 15.7kN/m°, and for clay eo= 0.65, Cc = 0.25, Cs = 0.06, O'p = 200kN/m² and sat =19.25KN/m³. 19.25kN/m and t = %3D