RAM Concept Concrete stress Diagrams

Please check the program manual, section, "63.5.12 TR-43 5.8.1 PT Service Stresses (UK National Annex only)" for details on how this is performed in Ram Concept. Here's a brief excerpt:

For two way slabs, for members with tension stresses supplemental reinforcement is always provided in accordance with TR43 5.8.7. Table 4 or Table 5 values are used depending upon whether or not full panel width strips are used (average stresses) or column/middle strips are used (‘design strip’ stresses). In determination of using ‘with bonded reinforcement’ limits the average spacing of the bonded reinforcement on the tension face is checked (using bonded tendons in the tension zone). If the bonded reinforcement spacing limit is greater than 500 mm at the time when the limits are being determined, the ‘without bonded reinforcement’ limits are used.
Since the reinforcement in the service design is left in the cross section from force envelope to envelope, it is possible that an envelope will use the ‘without bonded reinforcement’ limits while the subsequent envelope will use ‘with bonded reinforcement’ limits due to the reinforcement added in the previous envelope. Where full panel width strips are used, the recommended design strip property setting “PT Service Design Type” is either “Stress” or “Stress and Crack Width”. “Crack Width” only is not explicitly permitted by TR43. In the case where column/middle strips are used the recommended setting is “Stress” or “Stress and Crack Width” or “Crack Width” as TR43 explicitly permits the stress limits in Table 5 to be exceeded where explicit crack width checks are performed.

Please check the program manual, section, "63.5.12 TR-43 5.8.1 PT Service Stresses (UK National Annex only)" for details on how this is performed in Ram Concept. Here's a brief excerpt:

For two way slabs, for members with tension stresses supplemental reinforcement is always provided in accordance with TR43 5.8.7. Table 4 or Table 5 values are used depending upon whether or not full panel width strips are used (average stresses) or column/middle strips are used (‘design strip’ stresses). In determination of using ‘with bonded reinforcement’ limits the average spacing of the bonded reinforcement on the tension face is checked (using bonded tendons in the tension zone). If the bonded reinforcement spacing limit is greater than 500 mm at the time when the limits are being determined, the ‘without bonded reinforcement’ limits are used.
Since the reinforcement in the service design is left in the cross section from force envelope to envelope, it is possible that an envelope will use the ‘without bonded reinforcement’ limits while the subsequent envelope will use ‘with bonded reinforcement’ limits due to the reinforcement added in the previous envelope. Where full panel width strips are used, the recommended design strip property setting “PT Service Design Type” is either “Stress” or “Stress and Crack Width”. “Crack Width” only is not explicitly permitted by TR43. In the case where column/middle strips are used the recommended setting is “Stress” or “Stress and Crack Width” or “Crack Width” as TR43 explicitly permits the stress limits in Table 5 to be exceeded where explicit crack width checks are performed.