BS 5628-1:1992:2002 Edition
$215.11
Code of practice for use of masonry – Structural use of unreinforced masonry
| Published By | Publication Date | Number of Pages |
| BSI | 2002 | 78 |
Gives recommendations for the structural design of brick masonry, block masonry, masonry of square dressed natural stone and random rubble masonry.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 1 | BRITISH STANDARD |
| 2 | Committees responsible for this British�Standard |
| 3 | Contents |
| 7 | General 1 Scope 2 References 3 Definitions actual dimension category 1 building category 2 building characteristic load characteristic strength of masonry compressive strength of structural units column design load design strength |
| 8 | effective height or length effective thickness laterally loaded wall panels lateral support loadbearing walls masonry orthogonal ratio pier protected member slenderness ratio structural units Types of wall single-leaf wall double-leaf (collar-jointed) wall |
| 9 | cavity wall grouted cavity wall faced wall veneered wall wallette 4 Symbols |
| 10 | 5 Alternative materials and methods of design and construction |
| 11 | Section 2 Materials, components and workmanship 6 General 7 Structural units 8 Laying of structural units 8.1 General 8.2 Bricks with frogs 8.3 Perforated bricks 8.4 Hollow and cellular blocks 9 Rate of laying 10 Forming of chases and holes |
| 12 | 11 Pallet slips 12 Damp proof courses 13 Wall ties 14 Cements 15 Mortars 15.1 General 15.2 Ready-mixed mortars 16 Colouring agents 17 Plasticizers 18 Frost inhibitors |
| 13 | Table 1 Requirements for mortar |
| 15 | Section 3 Design: objectives and general recommendations 19 Basis of design 20 Stability 20.1 General considerations 20.2 Earth retaining and foundation structures |
| 16 | 20.3 Accidental forces 20.4 During construction 21 Loads 22 Design loads: partial safety factor, |
| 17 | 23 Characteristic compressive strength of masonry, 23.1 Normal masonry |
| 18 | Figure 1a Characteristic compressive strength of brick masonry |
| 19 | Figure 1b Characteristic compressive strength, Figure 1c Characteristic compressive strength, |
| 20 | Figure 1d Characteristic compressive strength, |
| 21 | Table 2 Characteristic compressive strength of masonry, |
| 22 | 23.2 Structural units laid other than on the normal bed face 23.3 Perforated bricks and hollow blocks 24 Characteristic flexural strength of masonry, 24.1 General 24.2 Flexural strength |
| 23 | 25 Characteristic shear strength of masonry, 26 Coefficient of friction 27 Partial safety factors for material strength, 27.1 General 27.2 Quality control |
| 24 | Figure 2 Shear forces acting in the horizontal and vertical planes |
| 25 | Table 3 Characteristic flexural strength of masonry, |
| 26 | 27.3 Table 4a Partial safety factors for material�strength — Compression, Table 4b Partial safety factors for material strength — Flexure, æ 27.4 27.5 |
| 27 | Section 4 Design: detailed considerations 28 Consideration of slenderness of walls and columns 28.1 Slenderness ratio 28.2 Lateral support 28.3 Effective height or length |
| 28 | Figure 3 Effective thickness of columns and walls |
| 29 | 28.4 Effective thickness Table 5 Stiffness coefficient for walls stiffened by piers |
| 30 | 29 Special types of wall 29.1 Cavity walls |
| 31 | Table 6 Selection of wall ties: types and lengths |
| 32 | 29.2 External cavity walls 29.3 External walls of framed structures 29.4 Faced walls 29.5 Veneered walls |
| 33 | 29.6 Double-leaf (collar jointed) walls 29.8 Grouted cavity walls 30 Eccentricity in the plane of the wall 31 Eccentricity at right angles to the wall |
| 34 | 32 Walls and columns subjected to vertical loading 32.1 Loads eccentric in the plane of the wall Figure 4 Load distribution from loading eccentric to plane of wall 32.2 Design strength of masonry |
| 35 | Table 7 Capacity reduction factor, |
| 36 | 33 Walls subjected to shear forces 34 Concentrated loads: stresses under and close to a bearing |
| 37 | Figure 5 Concentrated loads: types of bearing |
| 38 | Figure 5 Concentrated loads: types of bearing |
| 39 | Figure 5 Concentrated loads: types of bearing 35 Composite action between walls and their supporting beams |
| 40 | Figure 6 Concentrated loads: load distribution |
| 41 | 36 Walls subjected to lateral load 36.1 General 36.2 Support conditions and continuity |
| 42 | Figure 7 Vertical support conditions for laterally loaded panels |
| 43 | Figure 8 Horizontal support conditions |
| 44 | Table 8 Characteristic strengths of wall ties used as panel supports 36.3Limiting dimensions |
| 45 | 36.4 Methods of design for laterally loaded wall panels |
| 47 | Table 9 Bending moment coefficients in laterally loaded wall panels |
| 48 | Table 9 Bending moment coefficients in laterally loaded wall panels |
| 49 | Table 9 Bending moment coefficients in laterally loaded wall panels |
| 50 | Table 9 Bending moment coefficients in laterally loaded wall panels |
| 51 | 36.5 Method of design for freestanding walls |
| 52 | 36.6 Retaining walls 36.7 Foundation walls 36.8 Design lateral strength of axially loaded walls and columns |
| 53 | Table 10 36.9 Method of design for propped cantilever walls for single storey buildings under wind loading |
| 55 | Section 5 Design: accidental damage 37 Design: accidental damage 37.1 General guidance Table 11 Loadbearing elements |
| 56 | 37.2 Partial safety factors 37.3 Horizontal ties 37.4 Vertical ties 37.5 Loadbearing elements |
| 57 | Table 12 Detailed accidental damage recommendations |
| 58 | Table 13 Requirements for full peripheral, internal and column or wall ties |
| 59 | Table 14 Requirements for full vertical ties |
| 60 | Appendix A Testing A.1 Mortar testing Preliminary tests Interpretation of test results Site tests A.2 Experimental determination of characteristic compressive strength of masonry General |
| 61 | Type of test panel Method of testing Structural units for test panels Mortar for test panels Curing and age of testing Calculation of characteristic compressive strength, |
| 62 | Table 15 Reduction factor, A.3 Determination of characteristic flexural strength of masonry Test procedure |
| 63 | Figure 9 Testing of wallettes |
| 64 | Format of wallettes Calculation of characteristic flexural strength from experimental results |
| 65 | Appendix B Derivation of ß B.1 Assumptions for eccentricity and slenderness B.2 Assumptions for design of wall made from solid units |
| 66 | Figure 10 Stress block under ultimate conditions B.3 Alternative assumptions for design of single-leaf walls with hollow concrete blocks B.4 Alternative assumptions for design of single-leaf walls of shell bedded blocks or hollow clay mas… Appendix C Connections to floors and roofs by means of metal anchors and joist hangers capable of resisting … |
| 67 | Figure 11 Timber floor bearing directly on to wall |
| 68 | Figure 12 Timber floor using typical joist hanger Figure 13 Timber floor using nailed or bolted joist hangers acting as tie |
| 69 | Figure 14 Joist hanger as tie: nailed form Figure 15 Joist hanger as tie: bolted form |
| 70 | Figure 16 In-situ concrete floor abutting external cavity wall Figure 17 Beam and pot floor abutting external cavity wall |
| 71 | Figure 18 Precast units abutting external cavity wall Figure 19 Timber floor abutting external cavity wall |
| 72 | Figure 20 Timber floor using double joist hanger acting as tie Figure 21 Timber floor using typical joist hanger |
| 73 | Figure 22 Timber floor abutting internal wall Figure 23 In-situ floor abutting internal wall |
| 74 | Figure 24 Beam and pot floor abutting internal wall Figure 25 Precast units abutting internal wall |
| 75 | Appendix D Laterally loaded panels of irregular shape, or those containing openings Figure 26 Dividing a panel into parts to allow for openings |
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