investigation works for a major project in Irbid‚ Jordan. Laboratory resonant column and torsional shear tests were performed at different confining pressures whereas ultrasonic velocity tests were conducted on unconfined rock specimens. In addition‚ empirical relationships were used for estimating the rock mass modulus employing the results of the uniaxial compression and point load strength tests. Field measurements comprised pressuremeter testing as well as seismic geophysical methods including
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1 = ⎛ − νσ + σ − νσ ⎞ ⎜ x y z⎟ E⎝ ⎠ 1 = ⎛ − νσ − νσ − σ ⎞ ⎜ x y z⎟ E⎝ ⎠ ε = x ε ε y z τ xy ε = xy 2G τ ε = xz xz 2G ε yz = τ yz 2G Where E = Young’s modulus‚ ν = Poisson’s ratio‚ and G = shear modulus. A typical E for rock is between 10 and 60 GPa. A typical ν for rock is between 0.15 and 0.25. Note: isotropic means the properties do not depend on direction‚ and homogeneous means the properties are the same at every point in the material
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∴ = = 90 KN So‚ = 50 + 70 + 20 = + 90 = 50 KN Modifications for UDL: Taking moments around: [(12 x 10) x 5] = 8 x (additional ) ∴ Additional = 75 KN So‚ additional = 120 = + 75 = 45 KN So = 95 KN and = 165 KN 1.2 Draw the beam’s Shear Force diagram. 1.3 Determine the position of the maximum bending moment‚ measured from . Maximum bending moment is where the force diagram crosses 0‚ at 8m and between 2m and 6m. Bending Moment (BM) at 8m: (95 x 8) – (50 x 6) – (70 x 2) - [(12
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5 (b) A compound shaft consisting of a steel segment and an aluminum segment is acted upon by two torques as shown in figure 1. What is the total angle of twist at the free end‚ if maximum shear stress in the shaft is limited to 83 Mpa for steel and 55 Mpa for aluminum? Assume the modulus of rigidity to be 83x1000 N/mm2 for steel and 28x1000 N/mm2 for aluminum. 5 Q2. (a) What is effective length of a column and slenderness
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GRP STRUCTURAL LINING SYSTEMS For large diameter Circular and Non-circular Pipeline Rehabilitation © Copyright Channeline International Ltd. 11/2007 All rights reserved No part of this publication may be reproduced‚ copied‚ or distributed in any form including for databases‚ without the written permission of the publisher‚ nor may any part hereof be processed‚ duplicated or disseminated by electronic systems. Information and recommendations represent the state of knowledge at the time of publication
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Contents 1. Direct Shear Test 1 1.1 Introduction 1 1.2 Test Procedure 1 1.3 Results and Discussion 2 1.4 Conclusion and Limitations 4 2. Triaxial Compression Test 5 2.1 Introduction 5 2.2 Test Procedure 5 2.3 Results and Discussion 5 2.4 Conclusion and Limitations 7 3. Consolidation Test 8 3.1 Introduction 8 3.2 Test Procedure 8 3.3 Results and Discussion 8 3.4 Conclusion and Limitations 11 Appendix A 12 Appendix B 14 Appendix C 16 1. Direct Shear Test 1.1 Introduction
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Investors of asset backed securities (ABSs) are subject to interest rate risk. When interest rates rise‚ the prices of ABS fall‚ and vice versa. The risk of rising interest rate will affect yields because it may influence the pace of prepayments of the underlying loans. This is normally in the case of mortgages consumer asset backed securities. The underlying borrowers of asset backed securities may fail to make interest and principal payments when due and unable to meet other obligation such as
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Failure of Knuckle Joint in Tractor with Trolley‚ Design and Make Better Knuckle Joint A SEMINAR REPORT Submitted by SORATHIYA GHANSHYAM D. In fulfilment for the award of the degree of BACHELOR OF ENGINEERING in MECHANICAL ENGINEERING GOVERNMENT ENGINEERING COLLEGE‚ BHAVNAGAR‚ GUJARAT TECHNOLOGICAL UNIVERSITY‚ AHMEDABAD December‚ 2011 GOVERNMENT ENGINEERING COLLEGE‚ BHAVNAGAR‚ MECHANICAL ENGINEERING 2011 CERTIFICATE Date: 13-12-2011 This is to certify
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T.C.D | Measurement of Strain using Electrical Resistance Strain Gauges | 3B3 - Mechanics of Solids | | Adam McCreevey | 3/15/2013 | This is a laboratory to learn how to make measurements using a strain gauge by using different configurations‚ also to determine experimentally the axial and transverse stress at the surface of the beam and compare them to theoretical calculations | Introduction If a length of wire is subject to a stress within its elastic limits‚ the resulting
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lead added to improve machinability. 25. AISI 1045‚ 4140‚ 4640‚ 5150. 6150‚ 8650. 26. AISI 1045. 4140. 4340‚ 4640‚ 5150‚ 6150‚ 8650. 27. Wear resi.stance‚ strength‚ ductility. AISI 1080. 28. AISI 5160 OQT 1000 is a chromium steel‚ having nominally 0.80 percent chromium and 0.60 percent carbon‚ a high carbon alloy steel. It has fairly high strength and good ductility. It was through-hardened‚ quenched in oil‚ and tempered at 1000°F. 29. Yes. with careful specitlcadon ofthe quenching medium. A hardness
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