A LIMIT STATE DESIGN PROCEDURE FOR WATER-TIGHT R/C SECTIONS ACCORDING TO ECCS 203-2001 | ||||
| The International Conference on Civil and Architecture Engineering | ||||
| Article 4, Volume 6, 6th International Conference on Civil and Architecture Engineering, May 2006, Page 178-193 PDF (220.4 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/iccae.2006.45726 | ||||
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| Author | ||||
| MOHAMED HUSAIN | ||||
| Lecturer of structural Engineering, Zagazig University, Zagazig, Egypt. | ||||
| Abstract | ||||
| A limit state design procedure supplemented by design tables and charts was developed for dimensioning reinforced concrete water-tight sections according to the Egyptian code for concrete structures (ECCS 203-2001). The process involves the following two stages: (1) Obtain the section total depth by satisfying the requirements of the cracking limit state. (2) Obtain the required area of steel reinforcement from satisfying the ultimate strength limit state. The procedure omits the calculations required for determining the material under-capacity factor of concrete tensile strength, η. The η factor is a function of the section total depth as well as the state of stresses that the section is sustaining, through the code Eq.(4-69) and the code Table (4-16). The paper introduces a new concept of bending moment about the boundary of the inner core concrete section, M k , that proved helpful for sections subject to eccentric tensile or eccentric compressive normal forces. | ||||
| Keywords | ||||
| water tight structures; design of concrete tanks; limit states; Cracking; Ultimate strength; modulus of rupture | ||||
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