Document: NUREG-0800
Document ID: 5887ec11-6ad2-46aa-be7f-d596fb3777b6
Document Type: srp
Title: CONCRETE CONTAINMENT
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070324.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.8.1
CFR Part: 
CFR Title: 

Content:
nt between the test samples and the actual concrete in the structure. Cracking of the concrete may be considered in either of the following two ways: (i) the moments, forces, and shears under load may be obtained on the basis of an uncracked section for all loading combinations. In sizing the reinforcing steel required, however, the concrete shall not be relied upon for resisting tension. Thermal moments may be modified to take creep and cracking into consideration. (ii) For axisymmetrical loadings, cracking of the concrete may be considered through the use of computer programs which are capable of treating such cracking by an iterative process. However, for nonaxisymmetric loadings, most of the computer programs available do not have the capability of considering cracking, since the structure itself becomes nonaxisymmetric when concrete cracking is to be considered iteratively. Accordingly, if the concrete is cracked under any load combination involving axisymmetric and nonaxisymmetric loadings, a method should be described for considering cracking. Such methods are reviewed on a case-by-case basis. e. Computer programs The computer programs used in the design and analysis should be described and validated by any of the following procedures or criteria: (i) The computer program is a recognized program in the public domain and has had sufficient history of use to justify its applicability and validity without further demonstration. (ii) The computer program solution to a series of test problems has been demonstrated to be substantially identical to those obtained by a similar and independently written and recognized program in the public domain. The test problems should be demonstrated to be similar to or within the range of applicability of the problems analyzed by the public domain computer program. (iii) The computer program solution to a series of test problems has been demonstrated to be substantially identical to those obtained from classical solutions or from