ISO 18408:2019

Simplified structural design for reinforced concrete wall buildings

This document applies to reinforced concrete building consisting of load bearing walls of reinforced concrete buildings [such buildings are called reinforced concrete box-shaped wall buildings and (RC wall building)] or to the part of RC wall building which uses both this and other types of structure. This document applies to RC wall building as follows: — RC wall building with 5 or fewer aboveground storeys; — eaves height of 16 m or less; — storey height on each storey of 3 m or less; — on the top storey, the storey height can be 3,3 m or less; — if the roof has a slope, the sum of the storey height of the top storey and the height from the eaves to the ridge of 4 m or less. Deep foundations, such as piles and caissons, and their pile footings and caps, are beyond the scope of this document, and are not covered by it.

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General Information

• Status: Published
• Publication Date: 03-Sep-2019
• ICS: 91.080.40 - Concrete structures
• Technical Committee: ISO/TC 71/SC 5 - Simplified design standard for concrete structures
• Drafting Committee: ISO/TC 71/SC 5 - Simplified design standard for concrete structures
• Current Stage: 9020 - International Standard under periodical review
• Start Date: 15-Jul-2024
• Completion Date: 15-Jul-2024

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 18408
First edition
2019-08
Simplified structural design for
reinforced concrete wall buildings
Reference number
©
ISO 2019
© ISO 2019
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .vi
Introduction .vii
1 Scope .1
2 Normative references .1
3 Terms and definitions .1
4 Symbols .3
5 Materials for reinforced concrete .6
5.1 General . 6
5.2 Cement . 6
5.3 Aggregates . 6
5.4 Water . 6
5.5 Admixtures . 6
5.6 Storage of materials . 6
5.7 Steel reinforcement . 6
5.8 Deformed reinforcement . 6
5.9 Welded-wire fabric . 6
5.10 Plain reinforcement . 6
5.11 Concrete mixture specification . 7
6 Design and construction procedure .7
6.1 Procedure . 7
6.2 Limit states . 8
6.3 Ultimate limit state design format . 9
6.3.1 General. 9
6.3.2 Required factored strength . 9
6.3.3 Design strength . 9
6.4 Serviceability limit state design format . 9
6.5 Design documentation .10
6.5.1 General.10
6.5.2 Calculation memoir .10
6.5.3 Geotechnical report .10
6.5.4 Structural drawings .10
6.5.5 Specifications .10
7 Limitations .11
7.1 General .11
7.2 Occupancy .11
7.3 Maximum number of storeys .11
7.4 Maximum storey height .11
7.5 Minimum wall area ratio .11
7.6 Upper limit of average shear stress .11
7.7 Maximum storey drift angle .11
8 Specific requirements .12
8.1 Structural systems .12
8.1.1 Floor system .12
8.1.2 Vertical supporting elements .12
8.1.3 Foundation .12
8.1.4 Lateral load resisting system.12
8.1.5 Other structural elements .12
8.2 General program .12
8.2.1 Architectural program .12
8.2.2 General structural requirements for the project .13
8.3 Structural layout .13
8.3.1 General structural layout .13
8.3.2 Floor planning of bearing walls .13
8.3.3 Elevation planning of bearing walls .14
9 Actions (loads) .16
9.1 General .16
9.1.1 Load factors and load combinations .16
9.2 Mass of materials .18
9.3 Dead loads .18
9.4 Live loads .19
9.5 Specified snow load .19
9.6 Specified wind forces .19
9.7 Specified earthquake forces .19
9.7.1 General.19
9.7.2 Seismic hazard .20
9.7.3 No seismic hazard zones: .20
9.7.4 Low seismic hazard zones: .20
9.7.5 Intermediate seismic hazard zones: .20
9.7.6 High seismic hazard zones: .20
9.7.7 Soil profile types.26
9.7.8 Site effects .27
9.7.9 Design response spectral ordinates .27
9.8 Seismic design base shear .
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