Guidelines for the simplified design of structural reinforced concrete for buildings

ISO 15673:2016 provides guidelines for the design and construction of low-rise concrete building structures of small area to be built in the less developed areas of the world. ISO 15673:2016 is applicable to the planning, design and construction of structural reinforced concrete structures to be used in new low-rise buildings of restricted occupancy, number of stories, and area. ISO 15673:2016 can be used as an alternative to the development of a National Concrete Building Code, or equivalent document in countries where no national design codes are available by themselves, or as an alternative to the National Concrete Building Code in countries where specifically considered and accepted by the national standard body or other appropriate regulatory organization.

Lignes directrices pour la conception simplifiée du béton armé pour les structures de bâtiments

Smernice za poenostavljeno projektiranje armiranobetonskih konstrukcij za stavbe

V tem dokumentu so podane smernice za projektiranje in izgradnjo nizkih betonskih stavb z majhno površino, namenjenih za gradnjo v manj razvitih območjih po svetu.
Ta dokument se uporablja za načrtovanje, projektiranje in izgradnjo armiranobetonskih konstrukcij za nove nizke betonske stavbe z omejeno zasedenostjo, številom nadstropij in površino.
Ta dokument se lahko uporabi kot alternativa pripravi zakonika o gradnji betonskih objektov, kot enakovreden dokument v državah, kjer ni nacionalnih zakonikov o projektiranju, ali kot alternativa zakoniku o gradnji betonskih objektov v državah, kjer so ga nacionalni organi za standarde ali drugi pristojni regulativni organi posebej obravnavali in sprejeli.

General Information

Status
Published
Publication Date
24-Nov-2016
Current Stage
9020 - International Standard under periodical review
Start Date
15-Oct-2021

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INTERNATIONAL ISO
STANDARD 15673
Second edition
2016-12-01
Guidelines for the simplified design
of structural reinforced concrete for
buildings
Lignes directrices pour la conception simplifiée du béton armé pour
les structures de bâtiments
Reference number
ISO 15673:2016(E)
ISO 2016
---------------------- Page: 1 ----------------------
ISO 15673:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 15673:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................ix

Introduction ..................................................................................................................................................................................................................................x

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Symbols and abbreviated terms ........................................................................................................................................................13

4.1 Symbols ......................................................................................................................................................................................................13

4.2 Abbreviated terms ............................................................................................................................................................................16

5 Design and construction procedure ..............................................................................................................................................17

5.1 Procedure .................................................................................................................................................................................................17

5.1.1 Step A ......................................................................................................................................................................................17

5.1.2 Step B ......................................................................................................................................................................................17

5.1.3 Step C ......................................................................................................................................................................................17

5.1.4 Step D ......................................................................................................................................................................................17

5.1.5 Step E ......................................................................................................................................................................................17

5.1.6 Step F.......................................................................................................................................................................................17

5.1.7 Step G ......................................................................................................................................................................................17

5.1.8 Step H ......................................................................................................................................................................................17

5.1.9 Step I ........................................................................................................................................................................................17

5.1.10 Step J ........................................................................................................................................................................................18

5.1.11 Step K ......................................................................................................................................................................................18

5.2 Design documentation ..................................................................................................................................................................19

5.2.1 General...................................................................................................................................................................................19

5.2.2 Calculation memoir ....................................................................................................................................................19

5.2.3 Geotechnical report ....................................................................................................................................................19

5.2.4 Structural drawings ....................................................................................................................................................19

5.2.5 Specifications ...................................................................................................................................................................19

6 General guides .....................................................................................................................................................................................................19

6.1 Limitations ...............................................................................................................................................................................................19

6.1.1 Occupancy ...................................................................... .....................................................................................................19

6.1.2 Maximum number of stories ..............................................................................................................................20

6.1.3 Maximum area per floor .........................................................................................................................................20

6.1.4 Maximum story height .............................................................................................................................................20

6.1.5 Maximum span length ..............................................................................................................................................20

6.1.6 Maximum difference in span length .............................................................................................................20

6.1.7 Minimum number of spans ..................................................................................................................................21

6.1.8 Maximum cantilever span .....................................................................................................................................21

6.1.9 Maximum slope for slabs, girders, beams and joists .....................................................................21

6.1.10 Maximum slope of the terrain ...........................................................................................................................21

6.1.11 Distance between centre of mass and centre of rigidity ............................................................21

6.2 Limit states ..............................................................................................................................................................................................21

6.3 Ultimate limit state design format ......................................................................................................................................21

6.3.1 General...................................................................................................................................................................................21

6.3.2 Required factored strength ..................................................................................................................................22

6.3.3 Design strength ..............................................................................................................................................................22

6.4 Serviceability limit state design format ..........................................................................................................................22

7 Specific guides ......................................................................................................................................................................................................23

7.1 Structural systems and layout ................................................................................................................................................23

7.1.1 Description of the components of the structure ...............................................................................23

7.1.2 General programme ...................................................................................................................................................24

7.1.3 Structural layout .................. .................................................... ......................................................................................25

7.1.4 Feasibility under the guidelines ......................................................................................................................28

© ISO 2016 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 15673:2016(E)

8 Actions (loads) .....................................................................................................................................................................................................29

8.1 General ........................................................................................................................................................................................................29

8.1.1 Load factors and load combinations ............................................................................................................29

8.1.2 Mass of materials ..........................................................................................................................................................31

8.1.3 Dead loads ..........................................................................................................................................................................31

8.1.4 Live loads .............................................................................................................................................................................32

8.1.5 Specified snow load ....................................................................................................................................................32

8.1.6 Specified wind forces ................................................................................................................................................32

8.1.7 Specified earthquake forces ................................................................................................................................32

8.1.8 Seismic design base shear ....................................................................................................................................39

9 General reinforced concrete requirements ...........................................................................................................................40

9.1 General ........................................................................................................................................................................................................40

9.2 Additional requirements .............................................................................................................................................................40

9.3 Materials for reinforced concrete ........................................................................................................................................40

9.3.1 General...................................................................................................................................................................................40

9.3.2 Cement ...................................................................................................................................................................................40

9.3.3 Aggregates ..........................................................................................................................................................................40

9.3.4 Water .......................................................................................................................................................................................40

9.3.5 Steel reinforcement ....................................................................................................................................................40

9.3.6 Admixtures ...................................................................... ...................................................................................................41

9.3.7 Storage of materials ...................................................................................................................................................41

9.3.8 Minimum and maximum reinforcement bar diameter ................................................................41

9.3.9 Concrete mixture specification .........................................................................................................................42

9.3.10 Concrete cover to reinforcement ....................................................................................................................42

9.3.11 Minimum reinforcement bend diameter .................................................................................................43

9.3.12 Standard hook dimensions ..................................................................................................................................44

9.3.13 Bar spacing and maximum aggregate size..............................................................................................45

9.3.14 Maximum nominal coarse aggregate size ...............................................................................................45

9.3.15 Minimum clear spacing between parallel bars in a layer ..........................................................46

9.3.16 Minimum clear spacing between parallel layers of reinforcement ...................................46

9.3.17 Minimum clear spacing between longitudinal bars in columns ..........................................47

9.3.18 Clear spacing between parallel lap splices .............................................................................................48

9.3.19 Maximum flexural reinforcement spacing in solid slabs ............................................................48

9.3.20 Maximum shrinkage and temperature reinforcement spacing in solid slabs ..........48

9.3.21 Maximum reinforcement spacing in structural concrete walls ............................................49

9.3.22 Special details per element type .....................................................................................................................49

9.4 Development length, lap splicing and anchorage of reinforcement.......................................................49

9.4.1 Development length ...................................................................................................................................................49

9.4.2 Lap splice dimensions ..............................................................................................................................................51

9.4.3 Minimum standard hook anchorage distance .....................................................................................51

9.5 Limits for longitudinal reinforcement .............................................................................................................................52

9.5.1 General...................................................................................................................................................................................52

9.5.2 Solid slabs and footings...........................................................................................................................................52

9.5.3 Girders, beams and joists ......................................................................................................................................53

9.5.4 Columns ................................................................................................................................................................................55

9.5.5 Structural concrete walls .......................................................................................................................................55

9.6 Minimum amounts of transverse reinforcement ...................................................................................................56

9.6.1 General...................................................................................................................................................................................56

9.6.2 Slabs .........................................................................................................................................................................................56

9.6.3 Girders, beams and joists ......................................................................................................................................56

9.6.4 Columns ................................................................................................................................................................................56

9.6.5 Structural concrete walls .......................................................................................................................................60

9.7 Strength of members subjected to bending moments .......................................................................................61

9.7.1 General...................................................................................................................................................................................61

9.7.2 Factored bending moment at section .........................................................................................................61

9.7.3 Minimum design bending moment strength ........................................................................................61

9.7.4 Design moment strength for rectangular sections with tension

reinforcement only ........................................................................................................................................... ...........61

iv © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
ISO 15673:2016(E)

9.7.5 Use of compression reinforcement in girders, beams, and joists .......................................62

9.7.6 T-beam effect ....................................................................................................................................................................64

9.8 Strength of members subjected to shear stresses .................................................................................................66

9.8.1 General...................................................................................................................................................................................66

9.8.2 Factored shear ................................................................................................................................................................67

9.8.3 Design shear strength ...............................................................................................................................................67

9.8.4 Beam-action shear .......................................................................................................................................................67

9.8.5 Two-way action shear (punching shear) in solid slabs and footings ..............................70

10 Floor systems ........................................................................................................................................................................................................71

10.1 Types of floor systems ...................................................................................................................................................................71

10.1.1 General...................................................................................................................................................................................71

10.1.2 Slab-on-girder system ..............................................................................................................................................71

10.1.3 Description of the basic system .......................................................................................................................71

10.1.4 Joist systems .....................................................................................................................................................................74

10.2 Criteria for the selection of the floor system..............................................................................................................77

10.3 Guides for structural integrity ................................................................................................................................................78

10.3.1 General...................................................................................................................................................................................78

10.3.2 Perimeter girders in slab-and-girder and joist systems .............................................................78

10.3.3 Other beams and girders .......................................................................................................................................78

10.3.4 Joists ........................................................................................................................................................................................78

10.4 One-way and two-way slabs and load path .................................................................................................................78

10.4.1 General...................................................................................................................................................................................78

10.4.2 One-way behaviour ........................................................................................................................................... ..........78

10.4.3 Two-way behaviour ....................................................................................................................................................79

10.4.4 Floor system load path ............................................................................................................................................79

10.5 Minimum depth for elements of the floor system .................................................................................................79

10.5.1 General...................................................................................................................................................................................79

10.5.2 Solid one-way slabs supported by girders, beams, joists, or structural walls .........79

10.5.3 Girders, beams and one-way joists supporting the slab .............................................................80

10.5.4 Two-way slabs supported by girders, beams, or structural concrete walls...............81

10.6 Initial trial dimensions for the floor system ...............................................................................................................82

11 Solid slabs supported on girders, beams, joists or structural concrete walls ...................................82

11.1 General ........................................................................................................................................................................................................82

11.2 Design load definition ....................................................................................................................................................................82

11.2.1 Loads to be included ..................................................................................................................................................82

11.2.2 Dead load and live load ...........................................................................................................................................82

11.2.3 Factored design loads ...............................................................................................................................................82

11.3 Details of reinforcement ..............................................................................................................................................................83

11.3.1 General...................................................................................................................................................................................83

11.3.2 Shrinkage and temperature reinforcement ...........................................................................................83

11.3.3 Positive flexural reinforcement ........................................................................................................................83

11.3.4 Negative flexural reinforcement ......................................................................................................................84

11.3.5 Shear reinforcement ..................................................................................................................................................85

11.3.6 Corner reinforcement ...............................................................................................................................................85

11.4 Top thin solid slab that spans between joists ............................................................................................................87

11.4.1 Dimensional guidelines ...........................................................................................................................................87

11.4.2 Factored bending moment ...................................................................................................................................87

11.4.3 Reinforcement .................................................................................................................................................................87

11.4.4 Shear strength verification...................................................................................................................................88

11.4.5 Calculation of the reactions on the joists .................................................................................................88

11.5 Cantilevers of slabs supported on girders, beams or walls ...........................................................................88

11.5.1 Dimensional guidelines ...........................................................................................................................................88

11.5.2 Factored negative bending moment .................. ...........................................................................................88

11.5.3 Reinforcement .................................................................................................................................................................89

11.5.4 Shear verification .........................................................................................................................................................91

11.5.5 Calculation of reactions on the supports ........................................................

...

SLOVENSKI STANDARD
SIST ISO 15673:2018
01-junij-2018
Smernice za poenostavljeno projektiranje armiranobetonskih konstrukcij za stavbe

Guidelines for the simplified design of structural reinforced concrete for buildings

Lignes directrices pour la conception simplifiée du béton armé pour les structures de

bâtiments
Ta slovenski standard je istoveten z: ISO 15673:2016
ICS:
91.080.40 Betonske konstrukcije Concrete structures
SIST ISO 15673:2018 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ISO 15673:2018
---------------------- Page: 2 ----------------------
SIST ISO 15673:2018
INTERNATIONAL ISO
STANDARD 15673
Second edition
2016-12-01
Guidelines for the simplified design
of structural reinforced concrete for
buildings
Lignes directrices pour la conception simplifiée du béton armé pour
les structures de bâtiments
Reference number
ISO 15673:2016(E)
ISO 2016
---------------------- Page: 3 ----------------------
SIST ISO 15673:2018
ISO 15673:2016(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2016, Published in Switzerland

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form

or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior

written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of

the requester.
ISO copyright office
Ch. de Blandonnet 8 • CP 401
CH-1214 Vernier, Geneva, Switzerland
Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
www.iso.org
ii © ISO 2016 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 15673:2018
ISO 15673:2016(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................ix

Introduction ..................................................................................................................................................................................................................................x

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 2

4 Symbols and abbreviated terms ........................................................................................................................................................13

4.1 Symbols ......................................................................................................................................................................................................13

4.2 Abbreviated terms ............................................................................................................................................................................16

5 Design and construction procedure ..............................................................................................................................................17

5.1 Procedure .................................................................................................................................................................................................17

5.1.1 Step A ......................................................................................................................................................................................17

5.1.2 Step B ......................................................................................................................................................................................17

5.1.3 Step C ......................................................................................................................................................................................17

5.1.4 Step D ......................................................................................................................................................................................17

5.1.5 Step E ......................................................................................................................................................................................17

5.1.6 Step F.......................................................................................................................................................................................17

5.1.7 Step G ......................................................................................................................................................................................17

5.1.8 Step H ......................................................................................................................................................................................17

5.1.9 Step I ........................................................................................................................................................................................17

5.1.10 Step J ........................................................................................................................................................................................18

5.1.11 Step K ......................................................................................................................................................................................18

5.2 Design documentation ..................................................................................................................................................................19

5.2.1 General...................................................................................................................................................................................19

5.2.2 Calculation memoir ....................................................................................................................................................19

5.2.3 Geotechnical report ....................................................................................................................................................19

5.2.4 Structural drawings ....................................................................................................................................................19

5.2.5 Specifications ...................................................................................................................................................................19

6 General guides .....................................................................................................................................................................................................19

6.1 Limitations ...............................................................................................................................................................................................19

6.1.1 Occupancy ...................................................................... .....................................................................................................19

6.1.2 Maximum number of stories ..............................................................................................................................20

6.1.3 Maximum area per floor .........................................................................................................................................20

6.1.4 Maximum story height .............................................................................................................................................20

6.1.5 Maximum span length ..............................................................................................................................................20

6.1.6 Maximum difference in span length .............................................................................................................20

6.1.7 Minimum number of spans ..................................................................................................................................21

6.1.8 Maximum cantilever span .....................................................................................................................................21

6.1.9 Maximum slope for slabs, girders, beams and joists .....................................................................21

6.1.10 Maximum slope of the terrain ...........................................................................................................................21

6.1.11 Distance between centre of mass and centre of rigidity ............................................................21

6.2 Limit states ..............................................................................................................................................................................................21

6.3 Ultimate limit state design format ......................................................................................................................................21

6.3.1 General...................................................................................................................................................................................21

6.3.2 Required factored strength ..................................................................................................................................22

6.3.3 Design strength ..............................................................................................................................................................22

6.4 Serviceability limit state design format ..........................................................................................................................22

7 Specific guides ......................................................................................................................................................................................................23

7.1 Structural systems and layout ................................................................................................................................................23

7.1.1 Description of the components of the structure ...............................................................................23

7.1.2 General programme ...................................................................................................................................................24

7.1.3 Structural layout .................. .................................................... ......................................................................................25

7.1.4 Feasibility under the guidelines ......................................................................................................................28

© ISO 2016 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 15673:2018
ISO 15673:2016(E)

8 Actions (loads) .....................................................................................................................................................................................................29

8.1 General ........................................................................................................................................................................................................29

8.1.1 Load factors and load combinations ............................................................................................................29

8.1.2 Mass of materials ..........................................................................................................................................................31

8.1.3 Dead loads ..........................................................................................................................................................................31

8.1.4 Live loads .............................................................................................................................................................................32

8.1.5 Specified snow load ....................................................................................................................................................32

8.1.6 Specified wind forces ................................................................................................................................................32

8.1.7 Specified earthquake forces ................................................................................................................................32

8.1.8 Seismic design base shear ....................................................................................................................................39

9 General reinforced concrete requirements ...........................................................................................................................40

9.1 General ........................................................................................................................................................................................................40

9.2 Additional requirements .............................................................................................................................................................40

9.3 Materials for reinforced concrete ........................................................................................................................................40

9.3.1 General...................................................................................................................................................................................40

9.3.2 Cement ...................................................................................................................................................................................40

9.3.3 Aggregates ..........................................................................................................................................................................40

9.3.4 Water .......................................................................................................................................................................................40

9.3.5 Steel reinforcement ....................................................................................................................................................40

9.3.6 Admixtures ...................................................................... ...................................................................................................41

9.3.7 Storage of materials ...................................................................................................................................................41

9.3.8 Minimum and maximum reinforcement bar diameter ................................................................41

9.3.9 Concrete mixture specification .........................................................................................................................42

9.3.10 Concrete cover to reinforcement ....................................................................................................................42

9.3.11 Minimum reinforcement bend diameter .................................................................................................43

9.3.12 Standard hook dimensions ..................................................................................................................................44

9.3.13 Bar spacing and maximum aggregate size..............................................................................................45

9.3.14 Maximum nominal coarse aggregate size ...............................................................................................45

9.3.15 Minimum clear spacing between parallel bars in a layer ..........................................................46

9.3.16 Minimum clear spacing between parallel layers of reinforcement ...................................46

9.3.17 Minimum clear spacing between longitudinal bars in columns ..........................................47

9.3.18 Clear spacing between parallel lap splices .............................................................................................48

9.3.19 Maximum flexural reinforcement spacing in solid slabs ............................................................48

9.3.20 Maximum shrinkage and temperature reinforcement spacing in solid slabs ..........48

9.3.21 Maximum reinforcement spacing in structural concrete walls ............................................49

9.3.22 Special details per element type .....................................................................................................................49

9.4 Development length, lap splicing and anchorage of reinforcement.......................................................49

9.4.1 Development length ...................................................................................................................................................49

9.4.2 Lap splice dimensions ..............................................................................................................................................51

9.4.3 Minimum standard hook anchorage distance .....................................................................................51

9.5 Limits for longitudinal reinforcement .............................................................................................................................52

9.5.1 General...................................................................................................................................................................................52

9.5.2 Solid slabs and footings...........................................................................................................................................52

9.5.3 Girders, beams and joists ......................................................................................................................................53

9.5.4 Columns ................................................................................................................................................................................55

9.5.5 Structural concrete walls .......................................................................................................................................55

9.6 Minimum amounts of transverse reinforcement ...................................................................................................56

9.6.1 General...................................................................................................................................................................................56

9.6.2 Slabs .........................................................................................................................................................................................56

9.6.3 Girders, beams and joists ......................................................................................................................................56

9.6.4 Columns ................................................................................................................................................................................56

9.6.5 Structural concrete walls .......................................................................................................................................60

9.7 Strength of members subjected to bending moments .......................................................................................61

9.7.1 General...................................................................................................................................................................................61

9.7.2 Factored bending moment at section .........................................................................................................61

9.7.3 Minimum design bending moment strength ........................................................................................61

9.7.4 Design moment strength for rectangular sections with tension

reinforcement only ........................................................................................................................................... ...........61

iv © ISO 2016 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 15673:2018
ISO 15673:2016(E)

9.7.5 Use of compression reinforcement in girders, beams, and joists .......................................62

9.7.6 T-beam effect ....................................................................................................................................................................64

9.8 Strength of members subjected to shear stresses .................................................................................................66

9.8.1 General...................................................................................................................................................................................66

9.8.2 Factored shear ................................................................................................................................................................67

9.8.3 Design shear strength ...............................................................................................................................................67

9.8.4 Beam-action shear .......................................................................................................................................................67

9.8.5 Two-way action shear (punching shear) in solid slabs and footings ..............................70

10 Floor systems ........................................................................................................................................................................................................71

10.1 Types of floor systems ...................................................................................................................................................................71

10.1.1 General...................................................................................................................................................................................71

10.1.2 Slab-on-girder system ..............................................................................................................................................71

10.1.3 Description of the basic system .......................................................................................................................71

10.1.4 Joist systems .....................................................................................................................................................................74

10.2 Criteria for the selection of the floor system..............................................................................................................77

10.3 Guides for structural integrity ................................................................................................................................................78

10.3.1 General...................................................................................................................................................................................78

10.3.2 Perimeter girders in slab-and-girder and joist systems .............................................................78

10.3.3 Other beams and girders .......................................................................................................................................78

10.3.4 Joists ........................................................................................................................................................................................78

10.4 One-way and two-way slabs and load path .................................................................................................................78

10.4.1 General...................................................................................................................................................................................78

10.4.2 One-way behaviour ........................................................................................................................................... ..........78

10.4.3 Two-way behaviour ....................................................................................................................................................79

10.4.4 Floor system load path ............................................................................................................................................79

10.5 Minimum depth for elements of the floor system .................................................................................................79

10.5.1 General...................................................................................................................................................................................79

10.5.2 Solid one-way slabs supported by girders, beams, joists, or structural walls .........79

10.5.3 Girders, beams and one-way joists supporting the slab .............................................................80

10.5.4 Two-way slabs supported by girders, beams, or structural concrete walls...............81

10.6 Initial trial dimensions for the floor system ...............................................................................................................82

11 Solid slabs supported on girders, beams, joists or structural concrete walls ...................................82

11.1 General ........................................................................................................................................................................................................82

11.2 Design load definition ....................................................................................................................................................................82

11.2.1 Loads to be included ..................................................................................................................................................82

11.2.2 Dead load and live load ...........................................................................................................................................82

11.2.3 Factored design loads ...............................................................................................................................................82

11.3 Details of reinforcement ..............................................................................................................................................................83

11.3.1 General...................................................................................................................................................................................83

11.3.2 Shrinkage and temperature reinforcement ...........................................................................................83

11.3.3 Positive flexural reinforcement ........................................................................................................................83

11.3.4 Negative flexural reinforcement ......................................................................................................................84

11.3.5 Shear reinforcement ..................................................................................................................................................85

11.3.6 Corner reinforcement ...............................................................................................................................................85

11.4 Top thin solid slab that spans between joists ............................................................................................................87

11.4.1 Dimensional guidelines ...........................................................................................................................................87

11.4.2 Factored bending moment ...................................................................................................................................87

11.4.3 Reinforcement .................................................................................................................................................................87

11.4.4 Shear strength verification...................................................................................................................................88

11.4.5 Calculation of the reactions on the joists .................................................................................................88

11.5 Cantilevers of slabs supported on girders, beams or walls .....................................................................

...

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