Suppose we have to make the automatically generated PR types come from the LIRA-CAD module to the LIRA-FEM program; in these PR types, the reinforcement pattern is arranged in two layers, as shown in Fig. 1.

Fig.1. Reinforcement in two layers

Fig.1. Reinforcement in two layers

To solve this problem, let's use the settings for the default rules of PR types assigned in the LIRA-CAD module (Fig. 2).

Fig.2. Settings for the rules of PR types in LIRA-CAD module

Fig.2. Settings for the rules of PR types in LIRA-CAD module

In our example, two columns with tags C1 and C2 should receive double layer reinforcement. For this purpose, we will create two (according to the number of tags) pairs (according to the number of layers) of rules for PR types.

For column C1, the first rule determines the number and diameter of reinforcement bars in the first layer (closer to the formwork). This rule works as a basic rule. No geometric properties are specified for this rule.

The second rule describes the reinforcement pattern in the second layer. For this rule, to be applied along with the first one, we define a "geometric property" from the beginning to the end of the bar. We declare this property to be "Additional". This means that it does not replace the bars arranged according to the general rule, but introduces additional ones.

As a result, columns C1 and C2 received two PR types each, which can be observed in LIRA-FEM program (see Fig. 3).

Fig.3. Columns C1 and C2 received two PR types each

Fig.3. Columns C1 and C2 received two PR types each

Note 1. Do not define both rules in a pair as additional (with geometric properties), because in this case the program will try to add them to the main rule.

Note 2. Do not define to one column both rules with geometric properties that do NOT have the "additional" tag. In this case the program will ignore the number of rules and assign one rule for the whole area of geometric property; this rule will replace the others.

If everything is done correctly, then in LIRA-FEM program in the "PR types" dialog box, you can get the picture shown in Fig.4 - reinforcement bars arranged in two layers.

Fig.4. Reinforcement bars arranged in two layers

Fig.4. Reinforcement bars arranged in two layers

If you find a mistake and want to inform us about it, select the mistake, then hold down the CTRL key and click ENTER.

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Олег Палиенко

Ведущий инженер-программист компании «ЛИРА САПР».
Разработка программных комплексов

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Олексій Башинський

Инженер технической поддержки компании «ЛИРА САПР».
Сопровождение программных комплексов ЛИРА-САПР и САПФИР.

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