BS ISO 19338:2014 pdf download.Performance and assessment requirements for design standards on structural concrete.
4 General requirements
4.1 Overall structural concept The overall quality of a structure shall be implemented through strict quality control and care by a knowledgeable qualified design professional complying with ISO 2394, ISO 6241, and ISO 7162. In conceiving a structural system, load-carrying behaviour under maximum and frequent loads, materials and their combinations, constructibility, costs, and environmental aspects and aesthetics shall be considered.
4.2 Structural integrity Design of concrete structures shall provide general structural integrity, directly or implicitly. Localized damage or deterioration in a structure shall not impair general structural integrity.
4.3 Design approach A design standard for structural concrete shall be based on quantitative performance evaluation at the limit states. Design shall consider safety, serviceability, restorability, structural integrity, robustness, environmental adequacy, and durability. Where applicable, limit states caused by fatigue, fire, explosion, impact, and rare accidental actions or other extreme loadings or actions shall be considered.
4.4 Design service life Design service life shall be defined in consideration of the structural role, the social importance of the structures concerned, and the economically justified service life. Structural requirements shall be satisfied throughout the defined design life.
4.5 Workmanship, materials and quality assurance In order for the properties of the completed structure to be consistent with the requirements and the assumptions made during the planning and design, quality assurance and execution expectations for construction shall be considered and adequate quality control measures shall be taken.
5 Performance requirements
5.1 General For limit states, the design standard shall specify sets of action combinations and a reliability-based design concept that can be analytically demonstrated to give an adequate performance level during the design life of the structure.
5.2 Structural safety and ultimate limit states The safety level shall be selected considering the consequences of failure, the inability of the facility to fulfill its function, the relative importance of the expected modes of failure, the redundancy of the structure, and the ability to inspect and maintain the finished structure during service. Compressive stresses in concrete under any loads, including sustained loads, shall not cause crushing of the concrete.
5.3.2 Vibration limit state
Dynamic response and/or periods of vibration of a structure shall be considered and limited to avoid discomfort to occupants, impairing use of the structure, and/or avoid the risk of resonance. Dynamic analyses shall be used where required.BS ISO 19338 pdf download.