IN A 6M THICK STRATUM OF FINE SAND HAVING SUBMERGED DENSITY OF 11KN/M³, QUICK SAND CONDITION OCCURS AT A DEPTH OF 4.2M OF EXCAVATION. WHAT IS THE DEPTH OF LOWERING OF GWT REQUIRED FOR MAKING AN EXCAVATION OF 5M DEEP? (ASSUME DENSITY OF WATER AS 10KN/M³)
Q: Design a cylindrical steel suspension bunker to hold a two-day supply of bituminous coal for a 823-h...
A: Given data- A cylindrical steel suspension bunker-Two-day supply of bituminous coal for a 823-hp boi...
Q: STRUCTURAL THEORY Use the substitute member to make a complete analysis of the complex truss shown. ...
A: In structures, trusses permit architects to make enormous open spaces with less materials. Utilizing...
Q: A retaining wall 8 m high with a smooth vertical back retains a clay backfill with C = 15 kN/m2, 0 =...
A:
Q: In the figure shown, 2 m B. 3m a5 m- 4 kN 6 kN Compute the maximum tension in the cable. O 1.57 kN 6...
A: To find Maximum tension in the cable
Q: Use the substitute member to make a complete analysis of the complex truss shown. d 3m 25KN 4 m
A: Calculate the reaction at support, Ha=25 kNRa+Re=0 Taking moment at point a, Re×8-25×5.5=0Re=17.18 k...
Q: The lap joint in the figure is fastened by four 20 mm Ø A325X bolts. Calculate the maximum safe load...
A: 1. Calculate Design Shear Strength : Design Shear Strength for one bolt will be ; = An * fub3 rmo A...
Q: internal loadings acting on the cross section at C.
A:
Q: A cast-iron beam carries the loads shown. If f < 20 MN/m² and f. 5 80 MN/m² a. Compute the permissib...
A:
Q: 4.8 Member AB is the beam under consideration. As shown in the illustration of the loading condition...
A: in the question, the free body diagram is provided also the load of 500-lb/ft uniformly distributed...
Q: PProb. 2.7-4. A 100-kip capacity hydraulic punch press is used to punch circular holes in a 3/8-in.-...
A: P=100kips h=0.375in to find diameter of hole
Q: For the beam shown in the figure, Determine the following unknowns where L1 = 5m, L2 = 3m, and the m...
A: Given data Moment at fixed beam (Mc) = 1207.5 KNm L1 = 5m L2 = 3m Beam is analysis using equilibrium...
Q: The tangent of a simple curve have bearings of N20֯ E and N80֯ W respectively. If the radius of the ...
A:
Q: 30 kN 30 kN 30 kN D 20 kN C. E 4 m B -2 m--2 m- m-2 m- EA = constant E = 200 GPa A = 5000 mm?
A:
Q: The real specific gravity of soil is 2.75. Determine the particle density in grams per cubic centime...
A:
Q: Differentiate land preparation from tillage for farming?
A:
Q: cantilever truss carries a concentrated load P shown in the figure below: -1 e = tan (3/4) C nat are...
A: To find: Magnitude of axial forces
Q: Mylonite results from Presence of V-shape on contour maps means
A: a) Dynamic metamorphism b) Valley Contour: Streams and drainage c) Volcanic Rocks d) Metaquartzit...
Q: A trianqular o Pen channeL with Co.25m) depth and 60 angle conveys water.if the bed sloPe is (1: 137...
A:
Q: A column 3 m high has a solid circular cross section and carries an axial load of 25,000 kN. The dir...
A: Given data Length of column (L) = 3m = 3000mm Axial load (P) = 25000 KN E = 200 GPa = 2 × 105 N/mm2...
Q: Complete the table and Plot the compaction curve
A: Given the data obtained in a standard proctor test as, volume of mould = 1/30 ft3 = 0.028/30 m3 ...
Q: A solid circular steel shaft of diameter 20 mm is enclosed within a brass hollo of external diameter...
A:
Q: 1. Find the reaction at C so that the reactions at A and B are equal. Also, Find X and fir the react...
A:
Q: Bar BC is made of brass which has E = 90 GPa, a = 20 × 10¯6 /°C, and A = 500 mm² Bar ED is made of s...
A:
Q: The parameters is a numerical description of a sample characteristics
A: Answer: False A parameter is a numerical description of a population characteristic.
Q: If the compressive strength is 30.68 MPa, water - cement ratio is 0.45, and coarse aggregate is 992 ...
A: Given, Compressive strength = 30.68 MPa w/c ratio = 0.45 Coarse aggregate = 992 kg/m3
Q: Sand, silt, and clay has been determine on soil sample. The silt is l1.4% higher than sand and silt ...
A:
Q: The following are the properties of a steel section to be used for a beam section: Fy = 248 MPa Area...
A:
Q: The soil has a field capacity of 22% and a permanent wilting point of 12% both on a dry mass basis. ...
A:
Q: Prob. 1.4-13. For the overhanging beam shown in Fig. P1.4-13, determine: (a) expressions for the int...
A:
Q: Determine the degree of indeterminacy (i) of the structure shown below: Hinge
A:
Q: Derive the following relations for the the limit state design of balanced rectangular RCC beam (a) D...
A: Given data, Fy of steel = 415 MPa E of steel = 2x10^5 To derive following relations for limit state...
Q: SITUATION 10: A rectangular channel has a discharge equal to m3 18 The base of the channel is equal ...
A: Given data: Rectangular channel. b=6m. Q= 18 m3/s n=0.012 S=0.00025
Q: Three moving loads of P1, P2 and P3 have fixed distances apart. Distance between P1 and P2 is d1 whi...
A: In this question , since section is specified (pointD) where we have to calculate the moment. We wil...
Q: It is desired to sight Apayao Hill(elev = 4135.63 m) to Ifugao Hill(elev = 4153.92 m) 6.94 km away. ...
A:
Q: The bar MNOP rigid bar is pinned at N and connected to two vertical rods. Assuming that the bar was ...
A:
Q: Give examples of the changes that are continuously reshaping our way of life.
A: Multi-functional devices such as the smartwatch and smartphone have been made possible by modern tec...
Q: A 30cm diameter well fully penetrates an unconfined aquifer with saturated thickness ho=60m and hydr...
A:
Q: A sample of dry sand is subjected to a triaxial test . The angle of internal friction is 36° . If th...
A: Given data, A dry sand sample, Angle of internal friction= 30° Cell pressure= σc= σ3= 180kN/m² Fin...
Q: A person purchases a plot of land and constructs a building of plinth area 100 sq m on this plot of ...
A:
Q: A group of piles as shown on the figure has a cross section of 0.30 m x 0.30 m. It has a total lengt...
A:
Q: An increase in pressure of 2 bars decreases the volume of a liquid by 0.01 percent. The bulk modulus...
A:
Q: *An embankment is proposed to construct on 10m thick clay deposit having the coefficient of volume c...
A:
Q: In a shrinkage limit test, the volume and mass of a dry soil pat are found to be 50 cm³ and 88 g res...
A: Given, Volume of dry soil = 50 cm3 Mass of dry soil = 88 g Specific gravity of soil =2.71 Density ...
Q: A solid uniform metal bar of diameter D mm and length l mm hangs vertically from its upper end. The ...
A:
Q: A cylindrical specimen of stainless steel having an initial diameter of 12.8?? and initial length of...
A: Note- Hi! Thank you for the question, As per the honor code, we are allowed to answer three sub-part...
Q: The repair and rehabilitation of damaged or spalled concrete is
A:
Q: Given the data set below: a) Construct a frequency distribution table, b) show the Leaf and Stem, an...
A:
Q: 25m 'o.4m find the Length of given figur Albove Wall thickness =0.4m Sol Ve by Centerline Method and...
A: Center line method: The total centre line length of a building's walls is computed, then multiplied ...
Q: - A trianqular oPen channeL with (o.25m) depth and 60 angle conveys water. if the bed slope is (1: 1...
A:
Q: A pontoon bridge is constructed of two longitudinal wood beams, known as balks that span between ad...
A:
Step by step
Solved in 2 steps with 2 images
- The following table gives the variation of the field standard penetration number blows (N) in sand deposit: The ground water table is located at depth of 6m. The dry unit weight of sand from 0 to a depth of 6m is 18kN/m, and the saturated unit weight of sand for depth of 6m to 12m is 20.2kN/m'. Use the relationship to calculated correct (N) of standard penetration test against overburden effect. Depth (m) 1.5 No. of blows (N) 6. 3 8. 4.5 9 6. 8. 7.5 13 9. 14A hole was made in a stiff saturated soil having a Gs = 2.71 and moisture content of 0.30. The sand layer underlying the clay was observed to be under artesian pressure. Water in the drill hole rose to a height of 6.30 meters above the top of the sand layer %3D Exploratory drill hole 10 m 6.3 m 4.5 m Saturated clay L Sand a. If an open excavation is to be made in the clay, determine the safe depth of excavation before the bottom heaves. Round your final answer to three significant figures. b. How much is the pressure at the interface of the clay and sand? c. f a factor of safety of 2.0 is to be ensured, how deep should be the excavation from the ground surface? Note: Draw Free Body Digram and show full solution Topic: Soil Stresses (Soil Mechanics_Time left 1:24:08 An excavation is to be performed in a stratum of clay, 9 m thick, underlain by a bed of sand. In a trial bore hole, the ground-water is observed to rise up to an elevation 3 m below ground surface.Find the depth of which the excavation can be safely carried out without the bottom becoming unstable under uplift pressure of ground-water. The specific gravity of clay particles is 2.70 andthe void ratio is 0.70. If the excavation is to be safely carried to a depth of 7 m, how much should the water table be lowered in the vicinity of the trench ? O a. 6 m O b. 9 m C. O c. 10 m O d. 8 m SHOT ON POCO F3
- A proposed building is to have three levels of underground parking, as shown in the figure below. To construct this building, it will be necessary to make a 10.0 m excavation, which will need to be temporarily dewatered. The natural and dewatered groundwater tables are shown, and the medium clay is normally consolidated. The dewatering of the area under the existing building caused an increase in vertical effective stress. - 28 m - Existing building A B Proposed 1.5 m building Natural y. Dewatered y = 19.5 kN/mª 5 m 1.51 8.5 m 10 m 12.5 m Sand- (assume imcompressible) 2.5 m Fy= 20:0 kN/m. Medium clay C(1+ eo) = 0.26 y = 16.5 kN/m³ 10.3 m Stiff soils (assume imcompressible) Unit weight of SAND above the water table is 19.5 KN/cum while that below the water table is 20 KN/cuM. The unit weight of CLAY is 16.5 KN/cyM. The chief engineer is concerned that this dewatering operation may cause excessive settlement in the adjacent building and has asked you to: Compute for the anticipated…The results of a three consolidated undrained tri-axial test on saturated clay are as follows: Compute the angle of internal friction a. 15.03 degreesb. 12.06 degreesc. 18.40 degreesd. 31.05 degrees(a) Compute the intensity of passive earth lios pressure at a depth of 8m in a cohesionless sand with an angle of internal ange friction of 30° when water table rises to the ground level. Saturated unit weight of sand is 21 kN/m3; yw = 9.81 kN/m (b) A vertical excavation was made in a clay deposit having unit weight of 22 kN/m3. It caved in after the digging reached 4m depth. Assuming = 0, calculate the magnitude of cohesion.
- Plz give the correct answer. Compute the intensities of active and passive earth pressure at depth of 8 m in dry cohesionless sand with an angle of internal friction of 30 degrees , and unit weight of 18kN / (m ^ 3) What will be the intensities of active and passive pressure if the water level rises to the level? Take the saturated unit weight of sand as 22kN / (m ^ 3) .The following standard penetration test results were obtained in a uniform silty sand:Depth (m) 1 2 3 5N60 12 13 18 15 The groundwater table is at a depth of 2.5 m. Assume a reasonable value for g, then determinef′ for each test. Finally, determine a single design f′ value for this stratum.An excavation is to be performed in a stratum of clay, 9 m thick, underlain by a bed of sand. In a trial bore hole, the ground-water is observed to rise up to an elevation 3 m below ground surface.Find the depth of which the excavation can be safely carried out without the bottom becoming unstable under uplift pressure of ground-water. The specific gravity of clay particles is 2.70 andthe void ratio is 0.70. If the excavation is to be safely carried to a depth of 7 m, how much should the water table be lowered in the vicinity of the trench ? a. 10m b. 6m c. 9m d. 8m
- Compute the angle of internal friction. The results of a three consolidated undrained tri-axial test on saturated clay are as follows: a. 15.03°b. 12.06°c. 18.40°d. 31.05°A piezocone test was carried out at a site, and the following readings were recorded for the cone resistance q, and sleeve friction f.. Determine the soil present at these depths. Cone resistance, Sleeve friction, Depth (m) 9. (MN/m?) f. (kN/m?) 0.21 12.5 10 1.05 40.5 15 3.23 75.2 20 9.66 60.7 25 12.50 62.55. A CPT sounding is carried out at a site. The water table is found to be 2 meters underground. A layer of soil is identified, from z = 3m to z = 7m. The raw cone tip resistance for the layer is 900 kPa, the sleeve friction resistance is 65 kPa, and the penetration pore pressure is 220 kPa. Calculate the friction ratio for the soil layer.