Q1: determine the increase in vertical stresses at depth of Z=3.5 m under points A, B and C due to apply rectangular and ring foundations. The surface load intensity of rectangular is 250 kN/m², while the surface load intensity of ring is 300 kN/m².The drawing was done without scale and all dimensions in (m). R1 R2 X1 X2 B L 3 2 4.5 7.5 6 12

Q1: determine the increase in vertical stresses at depth of Z=3.5 m under points A, B and C due to apply rectangular and ring foundations. The surface load intensity of rectangular is 250 kN/m², while the surface load intensity of ring is 300 kN/m².The drawing was done without scale and all dimensions in (m). R1 R2 X1 X2 B L 3 2 4.5 7.5 6 12

Fundamentals of Geotechnical Engineering (MindTap Course List)

5th Edition

ISBN:9781305635180

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter16: Shallow Foundations-bearing Capacity

Section: Chapter Questions

Problem 16.4P: A 2.0 m wide strip foundation is placed in sand at 1.0 m depth. The properties of the sand are: =...

See similar textbooks

Similar questions

Q2) Find the increasing stress (Ao) at point A, at depth 6 m below the corner of the footing of foundation by using Boussinesq equation and attached table. 3m 660 KN 3 m 1.5 m 6m 3x3 m 6m A pint 1.5 m 40. Table 10.8 Variation of , withm and a Tq (10.30) 0.1 02 04 0.5 07 0.0047 0.0092 00132 0.0092 00179 0.029 0.0328 00132 0.0259 00174 0.0174 00222 001 0.087 00242 0.0474 02 0.0328 00474 0.0602 00711 0.0801 0.O873 00629 0.0801 0047 0.1069 0116 04 0.0711 0.0168 00198 0.0222 00242 0.0873 0.1014 Q1168 0.1277 06 07 0.017 00474
10 KN 20 KN / m 5 KN / m SIMPLE STRESSES A B 5 KN / m D 50 KN-m 5 KN / m E F 3. Point C of the beam 1.00 1.00 1.00 1.00 2.00 1,00 (in meters) system shown in the figure is 500mm x 700 mm wooden column. What is 3.00 m 30° maximum bearing stress along the grain of the wooden post? 0.50 m
how to get maximum normal stress and maximum shear and principal stresses with answers please W1 W2 b. a. P 15 kN a 1.25 m b 2.00 m C1.75 m d 5.00 m W =4 kN/m W2 5 kN/m Given: %3D
A bldg. has an L-shape as shown in the plan. The load exerted by the structure is 68 kPa. Compute the total vertical stress in kPa due to the structure load at a depth of 4.5 m. below the interior corner A of the L. shaped bldg. Assume that the foundation is under the entire bldg. Unit weight of soil is 17.50 kN/m.
i (all Q4) Use the following log and determine for section 12342-12358ft: needed equations can be found in the textbook). a. UCS (unconfined compressive strength) b. What is the horizontal stress at 12350' in MPa neglecting pore pressure? c. What is the cohesion of the rock? Assume ov = ơi and get the cohesion from the equation from the triaxial strength tests which relates So to UCS. d. Assume =30°. Use the cohesion and ơg and os from above. Is this a safe state of stress? Use an accurate Mohr circle construction (use a compass) to visualize your answer. e. Give the failure angle. CAMMA RAY CALIPER BULK DENSITY INTERVAL TRANSIT TIME Morker A
3. The horizontal prestress at the centroid of a concrete beam of rectangular crosssection 120 mm and 250 mm, is 7 N/mm2 and the maximum shearing force on the beam is 70 kN. Calculate the maximum principal tensile stress. What is the minimum vertical prestress required to eliminate this principal tensile stress?
2
SITUATION 1: A 250 mm wide rectangular concrete beam is reinforced for tension only. The beam has an effective depth of 300 mm. fc' = 9.3 MPa, fs = 138 MPa, n = 9. Use working stress design for balanced %3D condition. 1. Which of the following most nearly gives the value of k. a. 0.3225 c. 0.6234 b. 0.3526 d. 0.3775 2. Which of the following most nearly gives the value of j. a. 0.7482 c. 0.8742 b. 0.8472 d. 0.4278 3. Which of the following most nearly gives the balanced moment capacity of the beam in kN.m. a. 34.52 C. 36.7 b. 45.36 d. 32.3
QUESTION 1 A 300mm x 600mm prestressed beam has a prestress loss of 15%. Neglecting weight of beam, find P and e 25. When the compressive stress (top and bottom) is 24 MPa. c. P = 4982 kN d. P - 5085 kN 26. When the compressive stress at the bottom is 12 MPa. While that at the top is 2 MPA in tension. a. P - 1059 kN, e - 140 b. P = 1059 kN, e = 100 c. P - 1259 kN, c - 140 d. P = 1159 KN, e = 130 27. When the compressive stress at the bottom is 16 MPa while that at the top is zero. a. P = 1094 kN, e = 140 b. P = 1694 kN, e = 100 c. P = 1294 kN, e = 140 d. P = 1194 kN, c = 130 a. P = 5782 kN b. P - 6082 kN QUESTION 2 A rectangular channel 5.8 m wide by 1.4 m deep was laid to have a hydraulic slope of 0.001. Using n = 0.013. Determine the velocity of the channel. c. 1.29 m/s d. 3.81 m/s . 2.34 m/s .. 4.25 m/s QUESTION 3 A 1.5 mx 4 m tank is shown below. Find h. a. 1.35 m c. 1.75 m b. 1.25 m d. 1.05 m 3.0m Oll C 0.5m water V8 4.0m QUESTION 4 A compound curve has a common tangent equal to…
A one way slab has a total depth of 200mm with a 20mm clear cover at the bottom. The steel reinforcement is 20 mm diameter spaced at 125mm on centers. Use f'c = 30 MPa and fy = 400 MPa. 1) Determine the depth of the stress block for a strip of slab. 2) Determine the moment capacity of the strip of slab. 3) Determine the live load per sq.m. that the slab can carry if the slab were used on a 3m simple span. Concrete mass maybe taken at 2500 kg/m³ which includes the weight of reinforcement. Use 2015 NSCP. SDL can be taken as 12 kPa/m.
For the loaded area shown below, determine the increase in vertical stress (4p) at 5 ft below points B and C at the depth of the pipe, which is z = 5 feet below the footing, and 3 feet a way from its edge. The footing has a UDL , q = 1800 lb/ft2. 1,800 B. A 5t 4ft 5t 2 B 10 t 3 ft 10 ft 3 ft PLAN VIEW SECTION
Q2: Compute the total stresses, which induced from geostatic stress and increase vertical stress from circular foundation under points A and B to 3 and 6 m depth from the base of the foundation. The foundation was constructed at 2.0 m below the natural ground level (NGL). The surface load intensity is 330 kN/m². R1= 4, (calculate R2 from the drawing, do not assume it). Assume any other parameter you need in your answer. Aqs net