Materials Science and Engineering Properties, SI Edition
1st Edition
ISBN: 9781305178175
Author: GILMORE, Charles
Publisher: Cengage Learning
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Chapter 15, Problem 22CQ
To determine
Thedependency of backscattered image from an SEM.
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Part 4: Problem-Solving. Solve the following problems. Show all calculations.
1. A Standard Penetration Test (SPT) was conducted at a site, and the following blow counts were
recorded:
Depth: 2 m, Blow count (N): 10
D
D
Depth: 4 m, Blow count (N): 15
Depth: 6 m, Blow count (N): 20
The energy ratio is 60%, and the overburden correction factor CN is 1.1. Calculate the
corrected N-values for each depth.
2. A soil sample was collected from a depth of 3 m using a Shelby tube. The sample had a volume
of 0.01 m³ and a mass of 18 kg. If the water content is 12%, calculate the (a) bulk density, (b) dry
density, and (c) void ratio of the soil. Assume the specific gravity of soil solids (Gs) is 2.65.
3. A Cone Penetration Test (CPT) was conducted at a site, and the following data was obtained:
Depth: 2 m, Cone resistance (qc): 5 MPa
Depth: 4 m, Cone resistance (qc): 8 MPa
Depth: 6 m, Cone resistance (qc): 12 MPa
Estimate the soil type at each depth using typical qc correlations.
Pls show step by step and formula used
A:
Wel
Question 2
(a) A simple circular hollow section (CHS) tubular K-joint in a steel structure, subjected to balanced
axial loading, is illustrated in Figure 2a. Determine the maximum hot spot stress at the joint
intersection of the chord and the loaded brace B.
(b) The steel structure is installed in the seawater with cathodic protection. Determine the number of
stress cycles to failure based on the maximum hot stress range obtained in part (a). Use the
NORSOK standard. (Refer to S-N curves for tubular joints in air environment and seawater with
cathodic protection).
(c) Estimate the number of load repetitions required to induce fatigue failure in the tubular joint, based
on the load history provided in Figure 2b. The nominal yield and ultimate tensile strength are 355
N/mm² and 510 N/mm², respectively. Assume a damage limit of 1.0. Use the Modified Goodman
formulation to determine the equivalent completely reversed stress.
(d) Describe briefly the procedure to determine the hot…
Chapter 15 Solutions
Materials Science and Engineering Properties, SI Edition
Ch. 15 - Prob. 1CQCh. 15 - Prob. 2CQCh. 15 - Prob. 3CQCh. 15 - Prob. 4CQCh. 15 - Prob. 5CQCh. 15 - Prob. 6CQCh. 15 - Prob. 7CQCh. 15 - Prob. 8CQCh. 15 - Prob. 9CQCh. 15 - Prob. 10CQ
Ch. 15 - Prob. 11CQCh. 15 - Prob. 12CQCh. 15 - Prob. 13CQCh. 15 - Prob. 14CQCh. 15 - Prob. 15CQCh. 15 - Prob. 16CQCh. 15 - Prob. 17CQCh. 15 - Prob. 18CQCh. 15 - Prob. 19CQCh. 15 - Prob. 20CQCh. 15 - Prob. 21CQCh. 15 - Prob. 22CQCh. 15 - Prob. 24CQCh. 15 - Prob. 25CQCh. 15 - Prob. 1ETSQCh. 15 - Prob. 2ETSQCh. 15 - Prob. 3ETSQCh. 15 - Prob. 4ETSQCh. 15 - Prob. 5ETSQCh. 15 - Prob. 6ETSQCh. 15 - Prob. 7ETSQCh. 15 - Prob. 8ETSQCh. 15 - Prob. 9ETSQCh. 15 - Prob. 10ETSQCh. 15 - Prob. 11ETSQCh. 15 - Prob. 12ETSQCh. 15 - Prob. 13ETSQCh. 15 - Prob. 14ETSQCh. 15 - Prob. 15ETSQCh. 15 - Prob. 16ETSQ
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- The steel member is a fillet welded built-up section that comprises two flange plates (100mm x 20mm) and a web plate (250mm x 10mm) as depicted in Section A-A. The leg size of the weld is 8 mm. Use an appropriate consequence class. Based on the damage tolerant method and the modified Goodman equation. Determine an equivalent completely reversed stress. Ignore the vibration and dynamic amplification. Use Euro-code 1993-1-9. (a) Calculate the maximum and minimum stresses at steel member section A-A. (b) Check the fatigue resistance of the steel member at Section A-A using the fatigue limit. (c) Discuss the possible failure mode of the steel member due to fatigue loading. State your design assumptions, if any. Steel plate (Flange) 100mm x 20mm 10.0 m Fillet weld (manual) (Typical) Steel plate (Web) 250mm x 10 mm Steel plate (Flange) 100mm x 20mm Section A-A Fixed end Welded built-up steel section 5.0 m A 2.5m 3.0 m Fatigue load range 5 kN A Total weight of steel section Total weight of…arrow_forward30 20 10 Stress N/mm² 0 -10 -20 -30 Time Question 1 A Grade S355 steel member, which forms part of the structural framework supporting a storage tank in a warehouse, is subjected to various loads, as shown in Figure 1. The yield and tensile strength of the steel member are 355 N/mm² and 510 N/mm², respectively. The steel member is subjected to axial tension due to its self-weight and appurtenances of 40.0kN. The 10.0kN storage tank is positioned 1.0 m from the centreline of the steel member, and it experiences a fatigue load range of 5.0kN. The steel member is a fillet welded built-up section that comprises two flange plates (100mm x 20mm) and a web plate (250mm x 10mm) as depicted in Section A-A. The leg size of the weld is 8 mm. Use an appropriate consequence class. Based on the damage tolerant method and the modified Goodman equation. Determine an equivalent completely reversed stress. Ignore the vibration and dynamic amplification. Use Euro-code 1993-1-9. (a) Calculate the maximum…arrow_forwardPlease do not use design aid - R. Show step by step and every formular usedarrow_forward
- Following is the variation of the field standard penetration number (№60) in a sand deposit: Depth (m) N60 1.5 6 3 8 4.5 9 6 8 7.5 9 13 14 The groundwater table is located at a depth of 6 m. Given: the dry unit weight of sand from 0 to a depth of 6 m is 16 kN/m³, and the saturated unit weight of sand for depth 6 to 12 m is 18.2 kN/m². Use the relationship given in the equation CN = 1 σo/Pa 0.5 to calculate the corrected penetration numbers. (Round your answers to the nearest whole number.) Depth (m) Neo (N1)00 1.5 3 6 8 4.5 9 6 7.5 9 14 8 13arrow_forward1,5 m 1,5 m A 1,6 KN F 0,8 m E 0,8 marrow_forward5.85 The flow pattern through the pipe contraction is as shown, and the Q of water is 60 cfs. For d = 2 ft and D = 6 ft, what is the pressure at point B if the pressure at point C is 3200 psf? D E Problem 5.85 20° Barrow_forward
- Please solve problem 8.13 (the highlighted question).arrow_forwardThe following figure shows a vertical retaining wall with a granular backfill: 100.0 50.0 40.0 30.0 20.0 10.0- 5.0- 4.0 3.0- 2.0- = +1 0.8 0.6 0.4 0.2 0.0 -0.2 -0.4 -0.6 -0.8 -0.9 1.0- 0 10 20 30 40 45 ' (deg) (a) Figure Caquot and Kerisel's solution for K 3 Let H = 4m, a = 17.5°, y = 17.5 kN/m³, ' = 35°, and 8' = 10°. For given values of ' and 8', R' = 0.53. Based on Caquot and Kerisel's solution, what would be the passive force per meter length of the wall? (Enter your answer to two significant figures.) Pp= kN/marrow_forwardThe dam presented below is 180 m long (in the direction perpendicular to the plane of thecross-section). For the water elevations given on the drawing:a) Construct the flow net (minimum number of equipotential lines should be 10),b) Calculate the rate of seepage for the entire dam,c) Find the total uplift force on the dam (ignore barriers), andd) Estimate the hydraulic gradient at points A, B, and Darrow_forward
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