Standard Method of Detailing Structural Concrete A manual for best practice (KEBT0028)

Standard Method of Detailing Structural Concrete A manual for best practice

1  Introduction and scope

2 Communication of information

2.1 General

2.2 The reinforcement process

2.3 Designer detailing

2.4 Contractor detailing

2.5 Electronic data interchange (EDI)

2.6 Examples of typical methods of providing the required information for detailing

3  Drawings

3.1 General

3.2 Types of drawings

3.2.1 Structural drawings

3.2.2 Reinforcement drawings

3.2.3 Standard details

3.2.4 Diagrams

3.2.5 Record drawings

3.3 Photocopying and reduction

3.4 Abbreviations

3.5 Dimensions of drawing sheets

3.6 Borders

3.7 Title and information panels

3.8 Key

3.9 Orientation

3.9.1 Site plans

3.9.2 All other drawings

3.10 Thickness of lines

3.11 Lettering

3.12 Spelling

3.13 Dimensions

3.14 Levels

3.14.1 Datum

3.14.2 Levels on plan

3.14.3 Levels on section and elevation

3.15 Scales

3.16 Plans

3.17 Elevations

3.18 Sections

3.19 Grid lines and a recommended reference system

3.20 Layout of slabs

3.20.1 Methods of preparing general arrangement drawings for concrete structures

3.20.2 Information shown on general arrangement drawings for concrete structures

3.20.3 Fixing in concrete

3.20.4 Example of general arrangement drawing for concrete structures

3.21 Layout of foundations

3.22 Layout of stairs

4  Detailing and scheduling

4.1 Detailing techniques

4.1.1 Tabular method of detailing

4.1.2 Template drawings/Typical details

4.1.3 Overlay drawings

4.1.4 Computer-aided detailing and scheduling

4.2 Detailing reinforcement

4.2.1 General

4.2.2 Intersection and layering of reinforcement

4.2.3 Preformed cages

4.2.4 Straight bars

4.2.5 Welded fabric

4.2.6 Chairs

4.3 Precast concrete

4.4 Check list for detailer

4.5 Schedules and scheduling

4.5.1 General

4.5.2 Allowances for tolerances/deviations

4.6 Procedure for checking reinforcement drawings and schedules

4.6.1 Stage 1: Design check

4.6.2 Stage 2: Detailing check

4.6.3 Stage 3: Overall check

4.6.4 Method of checking

5  Technical information and requirements

5.1 Reinforcement

5.1.1 General

5.1.2 Strength/ductility properties

5.1.3 Bar identification

5.1.4 Notation

5.1.5 Sizes of reinforcing bars

5.1.6 Length and overall dimensions of reinforcing bars

5.1.7 Rebending bars

5.1.8 Large diameter bends

5.1.9 Structural tying reinforcement to ensure robustness

5.1.10 Fabric reinforcement

5.2 Cover to reinforcement

5.2.1 General

5.2.2 Cover for durability

5.2.3 Cover for fire resistance

5.2.4 Fixing reinforcement to obtain the correct cover

5.2.5 Minimum spacing of reinforcement

5.3 Cutting and bending tolerances

5.4 Anchorage and lap lengths

5.4.1 General

5.4.2 Anchorage lengths

5.4.3 Laps in reinforcement

5.4.4 Additional rules for large bars

5.4.5 Bundled bars

5.4.6 Laps in welded fabric

5.5 Mechanical couplers for bars

5.6 Welding of reinforcement

5.6.1 General

5.6.2 Semi-structural welding

5.6.3 Tack welding

6 Common structural elements

6.1 General

6.2 Slabs

6.2.1 Scope

6.2.2 Design and detailing notes

6.2.3 Detailing information

6.2.4 Presentation of working drawings

Model details

6.3 Beams

6.3.1 Scope

6.3.2 Design and detailing notes

6.3.3 Detailing information

6.3.4 Presentation of working drawings

Model details

6.4 Columns

6.4.1 Scope

6.4.2 Design and detailing notes

6.4.3 Detailing information

6.4.4 Presentation of working drawings

Model details

6.5 Walls

6.5.1 Scope

6.5.2 Design and detailing notes

6.5.3 Detailing information

6.5.4 Presentation of working drawings

Model details

6.6 Retaining Walls

6.6.1 Scope

6.6.2 Design and detailing notes

6.6.3 Detailing information

6.6.4 Presentation of working drawing

Model details

6.7 Foundations

6.7.1 Scope

6.7.2 Design and detailing notes

6.7.3 Detailing information

6.7.4 Presentation of working drawings

Model details

6.8 Staircases

6.8.1 Scope

6.8.2 Design and detailing notes

6.8.3 Detailing information

6.8.4 Presentation of working drawings

Model details

6.9 Corbels, half joints and nibs

6.9.1 Scope

6.9.2 Design and detailing notes

6.9.3 Detailing information

Model details

7 Prestressed concrete

7.1 General

7.2 Drawings

7.3 Components

7.3.1 Pre-tensioned units

7.3.2 Post-tensioned units

7.4 Reinforcement detailing

7.4.1 Minimum reinforcement

7.4.2 End blocks in post-tensioned elements

7.4.3 Secondary reinforcement

7.4.4 Additional reinforcement around holes

7.4.5 Reinforcement to resist the normal component of the prestress

7.4.6 Reinforcement against grouting pressure

7.4.7 Intermediate anchorages

7.4.8 Reinforcement in unstressed areas in slabs

7.4.9 Reinforcement infill strips

7.4.10 Reinforcement near stiff points

7.4.11 Movement joints

7.4.12 Pre-tensioned elements

7.4.13 Construction joints

7.5 Other effects of prestressing

7.5.1 Movements of the permanent structure

7.5.2 Variation in camber

7.5.3 Drilling and demolition

7.6 Typical details of post-tensioned floor slabs

8  Precast concrete

8.1 General

8.2 Particular durability problems

9  Water-retaining structures

9.1 General

9.2 Durability and crack control

9.2.1 General

9.2.2 Cover

9.2.3 Spacing of reinforcement

9.3 Other design and detailing information/requirements

9.3.1 Circular tanks

9.3.2 Opening corners

9.4 Typical details

10  References

Bibliography

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