Precast Concrete Structures, Second Edition

This second edition of **Precast Concrete Structures** introduces the conceptual design ideas for the prefabrication of concrete structures and presents a number of worked examples of designs to Eurocode EC2, before going into the detail of the design, manufacture, and construction of precast concrete multi-storey buildings. Detailed structural analysis of precast concrete and its use is provided and some details are presented of recent precast skeletal frames of up to forty storeys. The theory is supported by numerous worked examples to Eurocodes and European Product Standards for precast reinforced and prestressed concrete elements, composite construction, joints and connections and frame stability, together with extensive specifications for precast concrete structures. The book is extensively illustrated with over 500 photographs and line drawings. Content: Cover Half Title Title Page Copyright Page Table of Contents Preface to the First Edition Preface to the Second Edition Acknowledgement About the Author Notation 1: What is precast concrete 1.1 Why is precast different? 1.2 Precast concrete structures 1.3 Why choose a precast structure? References 2: Materials used in precast structures 2.1 Concrete 2.1.1 Concrete for precast production 2.1.2 Concrete for precast floor elements 2.1.3 Young's modulus and modular ratios 2.1.4 Shrinkage and creep 2.1.5 Fire resistance and axis distance to rebars and tendons 2.1.5.1 Columns. 2.1.5.2 Unbraced columns2.1.5.3 Walls 2.1.5.4 Beams 2.1.5.5 Reduced additional axis distance 2.1.5.6 Floor slabs 2.2 Mix design 2.2.1 Exposure, cover and strength 2.2.2 Mortars and grouts 2.2.3 Dry pack 2.2.4 Aggregates 2.2.5 Substitute materials 2.2.6 Admixtures 2.2.7 Water 2.3 Steel reinforcement 2.3.1 Rebars 2.3.2 Mesh 2.3.3 Stainless steel rebars 2.3.4 Prestressing tendons 2.4 Structural steel, welding, inserts and bolts 2.4.1 Structural steelwork 2.4.2 Welding 2.4.3 Cast-in fixings and lifting devices 2.4.4 Bolting 2.4.5 Cast-in sockets and anchorage. 2.5 Non-cementitious materialsReferences 3: Precast frame analysis 3.1 Types of precast concrete structures 3.2 Simplified frame analysis 3.3 Substructuring methods 3.3.1 Two-dimensional plane frames 3.3.2 Design loads on beams and frames 3.3.2.1 Serviceability limit state 3.3.2.2 Ultimate limit state 3.3.2.3 Instability limit state 3.3.2.4 Accidental limit state 3.3.3 Gravity and horizontal ultimate loads on frames 3.3.3.1 Permanent, variable and wind actions 3.3.3.2 Horizontal forces due to imperfections 3.3.4 Beam subframe 3.3.5 Upper floor column subframe. 3.3.6 Ground floor column subframe3.4 Connection design 3.5 Stabilising methods 3.6 Comparison of standard designs to BS 8110 and Eurocodes 3.6.1 Reinforced concrete rectangular beam 3.6.2 Reinforced concrete rectangular column 3.6.3 Prestressed concrete slab 3A Appendix A: Summary of Eurocode EC2: Design of concrete structures -- General rules and rules for buildings, BS EN 1992, Part 1-1 Summary of Eurocode EC2: Design for fire BS EN 1992, Part 1-2 2B Appendix B: Summary of relevant items in PD 6687-1:2010 References 4: Precast concrete floors 4.1 Precast concrete flooring options. 4.2 Flooring arrangements4.2.1 Definitions of precast floor units and slab fields 4.2.2 Lateral load distribution in discrete precast floor units 4.2.3 Discritization of floor slab loads in individual units 4.3 Structural design of individual units 4.3.1 Flexural capacity 4.3.2 Serviceability limit state of flexure 4.3.3 Serviceability limit state of flexure: Calculation model 4.3.4 Serviceability limit state of bending 4.3.5 Ultimate limit state of flexure 4.3.6 Deflection 4.3.7 Ultimate shear capacity 4.3.7.1 Shear capacity in the uncracked region, VRd, c. This second edition of Precast Concrete Structures introduces the conceptual design ideas for the prefabrication of concrete structures and presents a number of worked examples that translate designs from BS 8110 to Eurocode EC2, before going into the detail of the design, manufacture, and construction of precast concrete multi-storey buildings. Detailed structural analysis of precast concrete and its use is provided and some details are presented of recent precast skeletal frames of up to forty storeys.The theory is supported by numerous worked examples to Eurocodes and European Product Standards for precast reinforced and prestressed concrete elements, composite construction, joints and connections and frame stability, together with extensive specifications for precast concrete structures. The book is extensively illustrated with over 500 photographs and line drawings. This second edition of Precast Concrete Structures introduces the conceptual design ideas for the prefabrication of concrete structures and presents a number of worked examples that translate designs from BS 8110to Eurocode EC2, before going into the detail of the design, manufacture, and construction of precast concrete multi-storey buildings. Detailed structural analysis of precast concrete and its use is provided and some details are presented of recent precast skeletal frames of up to forty storeys. The theory is supported by numerous worked examples to Eurocodes and European Product Standards for precast reinforced and prestressed concrete elements, composite construction, joints and connections and frame stability, together with extensive specifications for precast concrete structures. The book is extensively illustrated with over 500 photographs and line drawings 2.1.5 Fire resistance and axis distance to rebars and tendons -- 2.1.5.1 Columns -- 2.1.5.2 Unbraced columns -- 2.1.5.3 Walls -- 2.1.5.4 Beams -- 2.1.5.5 Reduced additional axis distance -- 2.1.5.6 Floor slabs -- 2.2 Mix design -- 2.2.1 Exposure, cover and strength -- 2.2.2 Mortars and grouts -- 2.2.3 Dry pack -- 2.2.4 Aggregates -- 2.2.5 Substitute materials -- 2.2.6 Admixtures -- 2.2.7 Water -- 2.3 Steel reinforcement -- 2.3.1 Rebars -- 2.3.2 Mesh -- 2.3.3 Stainless steel rebars -- 2.3.4 Prestressing tendons -- 2.4 Structural steel, welding, inserts and bolts -- 2.4.1 Structural steelwork 2.4.2 Welding -- 2.4.3 Cast-in fixings and lifting devices -- 2.4.4 Bolting -- 2.4.5 Cast-in sockets and anchorage -- 2.5 Non-cementitious materials -- References -- 3: Precast frame analysis -- 3.1 Types of precast concrete structures -- 3.2 Simplified frame analysis -- 3.3 Substructuring methods -- 3.3.1 Two-dimensional plane frames -- 3.3.2 Design loads on beams and frames -- 3.3.2.1 Serviceability limit state -- 3.3.2.2 Ultimate limit state -- 3.3.2.3 Instability limit state -- 3.3.2.4 Accidental limit state -- 3.3.3 Gravity and horizontal ultimate loads on frames 3.3.3.1 Permanent, variable and wind actions -- 3.3.3.2 Horizontal forces due to imperfections -- 3.3.4 Beam subframe -- 3.3.5 Upper floor column subframe -- 3.3.6 Ground floor column subframe -- 3.4 Connection design -- 3.5 Stabilising methods -- 3.6 Comparison of standard designs to BS 8110 and Eurocodes -- 3.6.1 Reinforced concrete rectangular beam -- 3.6.2 Reinforced concrete rectangular column -- 3.6.3 Prestressed concrete slab -- 3A Appendix A: Summary of Eurocode EC2: Design of concrete structures - General rules and rules for buildings, BS EN 1992, Part 1-1 Of Eurocode EC2: Design for fire BS EN 1992, Part 1-2 -- 2B Appendix B: Summary of relevant items in PD 6687-1:2010 -- References -- 4: Precast concrete floors -- 4.1 Precast concrete flooring options -- 4.2 Flooring arrangements -- 4.2.1 Definitions of precast floor units and slab fields -- 4.2.2 Lateral load distribution in discrete precast floor units -- 4.2.3 Discritization of floor slab loads in individual units -- 4.3 Structural design of individual units -- 4.3.1 Flexural capacity -- 4.3.2 Serviceability limit state of flexure This highly illustrated second edition introduces conceptual design for prefabricated concrete structures and the design, manufacture, and construction of precast concrete multi-storey buildings, with worked examples. It gives full specifications to Eurocodes, with guidance on best practice.