2—environment design and construction considerations 2 1— introduction

... Engineers Washington, DC 20 314-1000 CECW-EG EM 1110 -2- 2300 Manual No 1110 -2- 2300 31 July 1994 Engineering and Design EARTH AND ROCK-FILL DAMS—GENERAL DESIGN AND CONSTRUCTION CONSIDERATIONS Purpose ... 1-1 2- 1 2- 1 2- 2 2- 5 2- 5 2- 6 Chapter Field Investigations and Laboratory Testing Geological and Subsurface Explorations and Field Tests 3-1 Laboratory Testing 3 -2 ... EM 1110 -2- 2300, dated 10 May 19 82 DEPARTMENT OF THE ARMY U.S Army Corps of Engineers Washington, DC 20 314-1000 CECW-EG EM 1110 -2- 2300 Manual No 1110 -2- 2300 31 July 1994 Engineering and Design...

Ngày tải lên: 28/04/2014, 11:50

... zinc, making it less suitable for making non-aeronautical alloys 2. 2 FLAT PRODUCTS 2. 2.1 Rolling mill practice Aluminium plate and sheet are manufactured in conventional rolling mills, the main ... decoiled and cut into sheets Plate and sheet widths thus produced are typically about 1.5 m, although greater sizes are possible Copyright 1999 by Taylor & Francis Group All Rights Reserved 2. 2 .2 Plate ... thicknesses are 0.5, 0.6, 0.8, 1.0, 1 .2, 1.5, 2. 0, 2. 5, 3.0, 4.0, 5.0 and 6.0 mm Most sheet is produced in non-heat-treatable material (1xxx, 3xxx, 5xxx), and is supplied in a stated temper (such...

Ngày tải lên: 22/07/2014, 18:22

... the interests and needs of the potential online community members; and • has all the requirements to be successfully implemented Understanding Needs and Assessing Opportunities - Introduction ... stakeholders and awareness building seminars • Training and capacity building programmes, research and surveys to establish training support needs, dissemination of existing training modules and information ... support and capacity building • Activities that will enhance sustainability of the initiatives • New technology and equipment, telephone and Internet connection, content development, networking and...

Ngày tải lên: 08/03/2014, 20:20

... the interests and needs of the potential online community members; and • has all the requirements to be successfully implemented Understanding Needs and Assessing Opportunities - Introduction ... stakeholders and awareness building seminars • Training and capacity building programmes, research and surveys to establish training support needs, dissemination of existing training modules and information ... support and capacity building • Activities that will enhance sustainability of the initiatives • New technology and equipment, telephone and Internet connection, content development, networking and...

Ngày tải lên: 08/03/2014, 20:20

... Primary production 2. 1 .2 Secondary metal 2. 2 Flat products Copyright 1999 by Taylor & Francis Group All Rights Reserved 2. 3 2. 4 2. 2.1 Rolling mill practice 2. 2 .2 Plate 2. 2.3 Sheet 2. 2.4 Tolerance ... 11.4. 12 Testing of prototype joints 12 Fatigue 12. 1 General description 12. 2 Possible ways of handling fatigue 12. 3 Checking procedure (safe life) 12. 3.1 Constant amplitude loading 12. 3 .2 Variable ... amplitude loading 12. 3.3 Design life 12. 3.4 Stress range 12. 3.5 Stress-range spectrum 12. 4 Representative stress 12. 4.1 Method A 12. 4 .2 Method B 12. 5 Classification of details 12. 5.1 The BS.8118...

Ngày tải lên: 22/07/2014, 18:22

... 20 First-Time Encryption and Rekeying 20 Clustering and Availability 21 HA Cluster 21 Encryption Group 22 DEK Cluster 22 ... with 128 bits, 1 92 bits, and 25 6 bits (AES- 128 , AES-1 92, and AES -25 6 respectively) It was rapidly adopted by the industry Most commercial applications for encryption of data-at-rest use AES -25 6 ... Cluster Encryption Device fig 12_ Encryption_BPG Fabric HA Cluster Cluster LAN Figure 12 HA and DEK clusters Encryption Solution Design and Deployment Considerations 22 of 58 DATA CENTER BEST PRACTICES...

Ngày tải lên: 19/03/2014, 13:33

... seamless 8 .2. 2 Piping Joints 8 .2. 2.1 The number of joints of any type between the vessel and the first block valve shall be minimized 8 .2. 2 .2 Welded joints shall be used where practical 8 .2. 2.3 The ... selected, the system shall include the design features described in 10.3 .2. 2.1 through 10.3 .2. 2.4 DESIGN AND CONSTRUCTION OF LPG INSTALLATIONS 10.3 .2. 2.1 The entire surface of each vessel shall ... (feet) 2, 000-30,000 30,001-70,000 70,001-90,000 90,001- 120 ,000 120 ,00 I or greater 50 75 100 125 20 0 DESIGN AND CONSTRUCTION OF LPG INSTALLATIONS 5.1.3 Siting of Pressurized LPG Tanks and Equipment...

Ngày tải lên: 27/03/2014, 14:08

... Hinklin 2. 1 2. 2 2. 3 2. 4 2. 5 2. 6 2. 7 2. 8 2. 9 2. 10 2. 11 2. 12 2.13 2. 14 2. 15 2. 16 2. 17 2. 18 2. 19 2. 20 2. 21 2. 22 1.1 Professional and Business Requirements of Architectural Engineers / 2. 2 Client ... Section 12 12. 1 12. 2 12. 3 12. 4 12. 5 12. 6 12. 7 12. 8 12. 9 12. 10 12. 11 12. 12 12. 13 12. 14 12. 15 12. 16 12. 17 12. 18 12. 19 12. 20 12. 21 Roof Systems Dave Flickinger ROOF MATERIALS Roof Decks / 12. 1 Vapor ... / 2. 24 Construction Scheduling / 2. 24 Shop Drawing Review / 2. 25 v 2. 1 vi CONTENTS 2. 23 2. 24 2. 25 2. 26 2. 27 2. 28 2. 29 Role of Architect or Engineer During Construction / 2. 26 Testing and Balancing...

Ngày tải lên: 27/06/2014, 22:20

... defined are 60, 50, 42, 35, 29 , 24 , 20 , 17, 14 The class for a given detail may be found by referring to the relevant table, based on BS.8118: Table 12. 2 non-welded details; Table 12. 3 welded details, ... r/b < r/b > K=1 .2 {1+ (1-e-0.7a/r)(1-r/b )2} K=1 .2 ( 12. 2) Other non-linear effects which become significant in fatigue are the secondary stresses in trusses, due to joint fixity, and the effects ... at the point considered (Figure 12. 2) Refer to Sections 12. 3.4 and 12. 4 Rationalize this stress history by reducing it to a set of specific stress ranges (fr1, fr2, fr3, etc.), the number of times...

Ngày tải lên: 22/07/2014, 18:22

... adhesive held at 25 °C Columns and give the room temperature curing time to achieve =1 and =10 N/mm2, when tested at 23 °C Columns and give typical average strengths when tested at 23 °C and 80°C, after ... (per bolt) and on their condition It is given by the expression: – – Pf=nµR (11.9) s g where n=number of friction interfaces and, µ=slip-factor (Section 11 .2. 6) 11 .2. 5 Bolt tension and reaction ... is taken as 0.33, based on the standard surface preparation, alternative values s=1 .2 and 1.33 are given and it is not clear which to use when On the other hand, when is found from tests, BS.8118...

Ngày tải lên: 22/07/2014, 18:22

... sections C1 and Z1 symbol f=Dt/BT Ixx and Iyy denote inertia of whole section about xx or yy For section I2 the symbols I1 and I2 denote the inertias of the individual flanges about yy xx and yy are ... [27 ]: (10 .22 ) Copyright 1999 by Taylor & Francis Group All Rights Reserved Table 10.3 Shear-centre position and warping factor for certain conventional sections Notes 1.Refer to Figure 10. 12 ... on either axis In applying equations (10 .22 ) and (10 .23 ), the following sign convention must be used, depending on the sense of the applied moment: X and xE are always taken plus Axis Gy is directed...

Ngày tải lên: 22/07/2014, 18:22

... checks A and B tend to be oversafe when applied to fully-compact profiles, and for these a more realistic result can be obtained by using a direct plastic calculation instead: (9 .22 a) (9 .22 b) where ... Figure 9 .2 Limiting stress pb for column buckling Copyright 1999 by Taylor & Francis Group All Rights Reserved exceeds 1.5y2, where y1 and y2 are the distances from this axis to the further and nearer ... buckling (9 .25 ) – – where: Mcpx=permissible value of M acting about Gx taken as the lower of the values given by (9 .20 ) and (9 .21 ) – – Mcpy=permissible value of M acting about Gy given by (9 .20 ) The...

Ngày tải lên: 22/07/2014, 18:22

... (1) and aluminium (2) beams of the same section and yield/proof stress Copyright 1999 by Taylor & Francis Group All Rights Reserved 8 .2. 2 Section classification The discussion in Section 8 .2. 1 ... yield stress and the 0 .2% proof stress respectively for the two materials Typically, the diagram might be looked on as comparing mild steel and 60 82- T6 aluminium Moment levels Zp° and Sp° are ... quantity Zp° replaced by Mc2 When operating this method we allow for HAZ softening by using the gross section and reducing the stress in any HAZ region to kz2p° 8 .2. 8 Local buckling in an understressed...

Ngày tải lên: 22/07/2014, 18:22

... classification, and likewise the effective block width beo when the element is slender, may thus be taken using the data already provided for the case ␺=1 (Sections 7 .2. 2 and 7 .2. 4) 7.3.6 Outstands under ... of e be1= (7.5) where =ß/ and P1 and Q1 are given in Table 7 .2 Figure 7.6 shows curves of plotted against covering non-welded and edge-welded plates Note that this design data, if expressed in ... which becomes operative when: ß > 12. 1 ß > 12. 9 e e Non-welded outstand Welded outstand The effect of so doing is shown by the broken curve in Figure 7.7 Chapters and explain when it is necessary...

Ngày tải lên: 22/07/2014, 18:22

... (6.2a) (6.2b) where fo,,fu are the 0 .2% proof stress and tensile strength of parent metal, and foo, fuo are the same in the annealed condition 6.5 EXTENT OF THE SOFTENED ZONE 6.5.1 General considerations ... SOFTENING 6.3.1 Heat-treated material Figure 6 .2 shows patterns of softening at a single-pass MIG weld, as might be obtained with 60 82- T6 and 7 020 -T6 material Such plots are determined Copyright ... might be obtained at a single-pass MIG weld on 5083-H 22 material Again, regions and can be identified In region 1, the hardness is now uniform and corresponds to the properties of the alloy in the...

Ngày tải lên: 22/07/2014, 18:22

... values for f1 and f2, based on BS.8118 For initial design of simple components one may safely put f2=1.0 g g g g g Copyright 1999 by Taylor & Francis Group All Rights Reserved 2 Material factor ... have and m equal to 1.3 and 1 .2 respectively, giving a minimum LFC of 1.56 This implies that the member could just withstand a static overload of 56% before collapsing The aim of limit state design ... relates to equations (5.6), (5.7) The resulting families of design curves are presented as follows: LT, Figure 8 .22 ; C1, 2, 3, Figure 9 .2; T1, Figure 9.9 Copyright 1999 by Taylor & Francis Group...

Ngày tải lên: 22/07/2014, 18:22

... proof stress of 25 0 N/mm2, ultimate tensile strength approaching 400 N/mm2 and good ductility In the full strength T6 condition, the proof and ultimate stress can reach 375 and 450 N/mm2 respectively, ... 4.5, also appear in structural codes: 50 52 (Mg 2. 5, Cr 0 .2) slightly stronger than 525 1; 5754 (Mg 3.1) intermediate between 525 1 and 5154A; 5454 (Mg 2. 7, Mn 0.7, Cr 0.1) similar strength to 5154A ... types of temper (H1x, H2x and H3x), and also for the full range of hardnesses in each type (Hx2, Hx4, Hx6, Hx8) But just because every conceivable condition is covered in the standard, this does not...

Ngày tải lên: 22/07/2014, 18:22

... should be grit-blasted British Standard BS.8118 recommends a standard treatment, and when this is used a stated design value may be taken for the slipfactor (Section 11 .2. 6) Tightening procedures are ... required fatigue class is 20 or below Fatigue quality applies when fatigue is a factor in the design of the joint, and the required fatigue class is 24 or over Table 3 .2 Filler wire types for welding ... the Fat-number and also an arrow showing the direction of the fluctuating stress As explained in Section 12. 7, the Fat-number defines the required fatigue class (24 , 29 , 35, 42 or 50), which...

Ngày tải lên: 22/07/2014, 18:22

... mortars 2. 1 Introduction 2. 2 Bricks and blocks 2. 3 Mortar 2. 4 Lime: non-hydraulic or semi-hydraulic lime 2. 5 Sand 2. 6 Water 2. 7 Plasticized Portland cement mortar 2. 8 Use of pigments 2. 9 Frost ... 2. 9 Frost inhibitors 2. 10 Proportioning and strength 2. 11 Choice of unit and mortar 20 04 Taylor & Francis 2. 12 2.13 2. 14 Wall ties Concrete infill and grout Reinforcing and prestressing steel ... prestress 12 Design calculations for a seven-storey dormitory building according to BS 5 628 12. 1 Introduction 12. 2 Basis of design: loadings 12. 3 Quality control: partial safety factors 12. 4 Calculation...

Ngày tải lên: 08/08/2014, 01:20

... Standards 2- 2 HORIZONTAL AND VERTICAL ALIGNMENTS .2- 2 Maximum Grades 2- 3 FHWA-NHI-09-010 Road Tunnel Manual i Table of Contents March 20 09 2. 2 .2 2 .2. 3 2. 2.4 ... Operation and Maintenance Cost Planning 1 -21 RISK ANALYSIS AND MANAGEMENT 1 -21 CHAPTER - GEOMETRIC CONFIGURATION 2- 1 2. 1 2. 1.1 2. 2 2. 2.1 INTRODUCTION 2- 1 Design ... 2- 6 2. 4.1 2. 4 .2 2.4.3 2. 4.4 2. 4.5 2. 4.6 2. 4.7 2. 4.8 Typical Cross Section Elements 2- 6 Travel Lane and Shoulder 2- 8 Sidewalks/Emergency Egress Walkway 2- 8...

Ngày tải lên: 30/08/2014, 22:32